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TL431AIDBZR

Adjustable precision shunt regulator 3-SOT-23 -40 to 85

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Price Range $0.2500 / $0.3775

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Part Number Description Manufacturer Compare
TL431AIDBZT Power Circuits Adjustable precision shunt regulator 3-SOT-23 -40 to 85 Texas Instruments TL431AIDBZR vs TL431AIDBZT
TL431AIDBZRG4 Power Circuits Adjustable precision shunt regulator 3-SOT-23 -40 to 85 Texas Instruments TL431AIDBZR vs TL431AIDBZRG4
TL431AIDBZTG4 Power Circuits Adjustable precision shunt regulator 3-SOT-23 -40 to 85 Texas Instruments TL431AIDBZR vs TL431AIDBZTG4
Part Number Description Manufacturer Compare
TL431AIDBZRG4 Power Circuits Adjustable precision shunt regulator 3-SOT-23 -40 to 85 Texas Instruments TL431AIDBZR vs TL431AIDBZRG4
TL431AIDBVT Power Circuits Adjustable precision shunt regulator 5-SOT-23 -40 to 85 Texas Instruments TL431AIDBZR vs TL431AIDBVT
TL431IDBVR Power Circuits Adjustable precision shunt regulator 5-SOT-23 -40 to 85 Texas Instruments TL431AIDBZR vs TL431IDBVR
TL431BIDBVT Power Circuits Adjustable precision shunt regulator 5-SOT-23 -40 to 85 Texas Instruments TL431AIDBZR vs TL431BIDBVT
TL431IDBVT Power Circuits Adjustable precision shunt regulator 5-SOT-23 -40 to 85 Texas Instruments TL431AIDBZR vs TL431IDBVT
TL431AIDBVR Power Circuits Adjustable precision shunt regulator 5-SOT-23 -40 to 85 Texas Instruments TL431AIDBZR vs TL431AIDBVR
TL431AIDBZT Power Circuits Adjustable precision shunt regulator 3-SOT-23 -40 to 85 Texas Instruments TL431AIDBZR vs TL431AIDBZT
TL432AIDBVR Power Circuits Adjustable precision shunt regulator 5-SOT-23 -40 to 85 Texas Instruments TL431AIDBZR vs TL432AIDBVR
TL431AIDBZTG4 Power Circuits Adjustable precision shunt regulator 3-SOT-23 -40 to 85 Texas Instruments TL431AIDBZR vs TL431AIDBZTG4
TL431BIDBVR Power Circuits Adjustable precision shunt regulator 5-SOT-23 -40 to 85 Texas Instruments TL431AIDBZR vs TL431BIDBVR

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  • 1. Texas Instruments $0.2500 Buy Now
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Datasheets & Reference Designs

Reference Designs

  • PMP11303 High Efficiency 350W AC/DC Power Supply Reference Design | TI.com
    PMP11303: PMP11303 is high-efficiency AC/DC power supply reference design with universal AC input and 25V/13.5A and 12V/1A outputs. LLC+PFC combo IC UCC29950 is applied for the main power stages with 25V/13.5A output while UCC28730 is applied for the auxiliary power with 12V/1A output. This design has low no load power comsumption (152mW@230VAC) and over 93% peak efficiency. This design also meet 80PLUS Gold requirement for 115VAC Internal power supplies.
  • PMP7451 36V-75VDC Input, 12V/10A Active Clamp Forward, 1/8th Brick Form Factor | TI.com
    PMP7451: This reference design generates a 12V/10A output from a standard 48V telecom input. The UCC2897A controls an active clamp forward converter power stage. The low gate charge and low RDSon of the CSD18531Q5A, implemented as self-driven synchronous rectifiers, provide for a highly efficient design. This design is laid out in a standard 1/8th brick footprint and includes enable, remote sense, and output overvoltage features.
  • Universal AC Input to 30Vmax@6A Lead-acid Battery Charger Reference Design with PFC
    PMP10110.2: The PMP10110 design converts the universal input AC voltage to isolated 17V...30V@6A and is suitable to charge lead-acid or Li-Ion batteries. The converter is a constant-V and constant-I genarator and the set points for output voltage (charge level) and current are settable by means of two PWM signals. The first stage is a PFC boost while the isolation ad current stabilization is performed by DC-DC half bridge stage. An isolated quasi-resonant flyback converter supplies all internal voltages and provide some extra current for external loads (fan or analog section), in details 12V@400mA and 5V@300mA.
  • PMP9750 400VDC Input to 28V/9A Output Compact, High Efficiency CLL Resonant Converter Reference Design | TI.com
    PMP9750: PMP9750 is a CLL resonant converter reference design with 400VDC input and 28V/9A ouput. Unlike LLC series resonant converter, CLL resonant converter used in PMP9750 utilizes its output inductor to minimize the size of the resonant tank. With resonant controller UCC25600 and bridge driver UCC27714, PMP9750 is able to achieve 95.7% peak efficiency.
  • AC Input, 6 Channel LED Strings with 30W Output Reference Design
    PMP4484.2: The PMP4484 is a power reference design with AC input. It is a isolated LED driver, provides 6 channel LED outputs with PWM dimming. It implements a high PF flyback controller UCC28810 to output DC 40V, the Constant Current Buck LED Driver LM3414HV downs the voltage to 30V to drive LED. The degisn also provides 3.3Vo to MCU by the buck conller LMR16006, and a 10Vo to RS485. The system achieves high efficiency and high PF.
  • PMP5666 18V to 60Vin to +/-12V, 13W | TI.com
    PMP5666: The PMP5666 is a two outputs, +/-12V (+800mA and -250mA), isolated flyback working in continuous conduction mode thus reducing peak currents. The loop is closed to the +12V main output. The input voltage range is 18V…60V.
  • Flyback, Linear Regulator for Medical Pack (5V @ 50mA) - PMP2187.3 - TI Tool Folder
    PMP2187: This design provides isolated 5V (x2), 3.3V, 2.5V and -5V outputs. All outputs are noise filtered using Low Drop Out (LDO) linear regulators for noise sensitive applications such as medical imaging and data acquisition.
  • AC Input, 6 Channel LED Strings with 30W Output Reference Design - PMP4484.8 - TI Tool Folder
    PMP4484: The PMP4484 is a power reference design with AC input. It is a isolated LED driver, provides 6 channel LED outputs with PWM dimming. It implements a high PF flyback controller UCC28810 to output DC 40V, the Constant Current Buck LED Driver LM3414HV downs the voltage to 30V to drive LED. The degisn also provides 3.3Vo to MCU by the buck conller LMR16006, and a 10Vo to RS485. The system achieves high efficiency and high PF.
  • Class 3- Mulitple Output, High Efficiency Flyback Converter for PoE Applications
    PMP8408: This converter is used for Class 3 PoE applications where high efficiency and multiple outputs are required. The flyback converter with synchronous rectifier provides excellent efficiency and small size for PoE applications such as IP Phones. The TPS23785B contains both the PoE Powered Device and the PWM controller functions.
  • PMP8021 Universal supply source - 12VAC / 12VDC to 300mA SEPIC converter for MR16 / AR111 (3&4 LEDs / 10V ~1 | TI.com
    PMP8021: The main purpose of this reference design is to demonstrate a very good compatibility of Power source SEPIC topology LED driver based on TPS92560. This LED driver is designed for converting a power source DC, AC & E-transformer to a regulated LED current. The operating conditions and performance of the reference design are as follows: 12VDC, or 12Vac / 50Hz 60Hz, or 12VAC E-transformer, Output Power 3 ~ 4W, 10 ~13V LED voltage , 300mA Regulated LED Current , 75% Typical System Efficiency, High Power Factor > 0.9, Output Short-Circuit and output Open-Circuit Protection.
  • AC Input, 6 Channel LED Strings with 30W Output Reference Design - PMP4484.6 - TI Tool Folder
    PMP4484: The PMP4484 is a power reference design with AC input. It is a isolated LED driver, provides 6 channel LED outputs with PWM dimming. It implements a high PF flyback controller UCC28810 to output DC 40V, the Constant Current Buck LED Driver LM3414HV downs the voltage to 30V to drive LED. The degisn also provides 3.3Vo to MCU by the buck conller LMR16006, and a 10Vo to RS485. The system achieves high efficiency and high PF.
  • PMP4405 AC Input, Dual Output Power Supply Reference Design | TI.com
    PMP4405: The PMP4405 reference design uses the UCC28740 Flyback controller with valley-switching controller to generate dual DC output 5V/2A and 26V/0.3A from a universal AC input. The design is suited for auxiliary power for industrial applications and appliances. The design is fully tested and compliant with EMI regulations
  • PMP7391 380VDC Input, 24V/170W Active Clamp Forward Reference Design | TI.com
    PMP7391: This reference design uses the UCC2894 to control an active clamp forward converter that generates an isolated 24 V at 7 A from a 380-VDC input. This supply is intended to be used with a PFC boost front end and requires an external 12-V bias voltage for housekeeping on the primary side. This supply is up to 91% efficient at full load.
  • PMP4484 AC Input, 6 Channel LED Strings with 30W Output Reference Design | TI.com
    PMP4484: The PMP4484 is a power reference design with AC input. It is a isolated LED driver, provides 6 channel LED outputs with PWM dimming. It implements a high PF flyback controller UCC28810 to output DC 40V, the Constant Current Buck LED Driver LM3414HV downs the voltage to 30V to drive LED. The degisn also provides 3.3Vo to MCU by the buck conller LMR16006, and a 10Vo to RS485. The system achieves high efficiency and high PF.
  • 24V@2A, 5V@0.6A PFC Flyback
    PMP5688.2: This Buck converter accepts the 24V input from PMP5688.1 and supplies the digital part of the load in LED digital architectures.
  • PMP12027 Valley Switching Flyback with 85 to 265VAC Input (48V @ 0.625A) Reference Design | TI.com
    PMP12027: The PMP12027 reference design uses the UCC28740 flyback controller to generate a 48V/625mA output from a universal AC input. The valley switching of the UCC28740 allows this design to achieve a maximum load efficiency over 90%; no load losses are less than 100mW. The constant current regulation mode of the UCC28740 provides accurate current limiting.
  • 85-265Vin, 5Vout, 1Aout, AC-DC Fly-Buck Converter Reference Design
    PMP10834: The PMP10834RevA reference design is a compact and thermally efficient design intended to step down a wide range of AC inputs (85VAC to 265VAC). This non-isolated Flybuck design incorporates the UCC28C42 PWM with an optocoupler feedback to provide 1% output voltage regulation. All the circuit components (including magnetics) are standard parts.
  • AC Input, 6 Channel LED Strings with 30W Output Reference Design
    PMP4484.6: The PMP4484 is a power reference design with AC input. It is a isolated LED driver, provides 6 channel LED outputs with PWM dimming. It implements a high PF flyback controller UCC28810 to output DC 40V, the Constant Current Buck LED Driver LM3414HV downs the voltage to 30V to drive LED. The degisn also provides 3.3Vo to MCU by the buck conller LMR16006, and a 10Vo to RS485. The system achieves high efficiency and high PF.
  • Quasi-Resonant Isolated Flyback 85-265VACin, 18V/830mA
    PMP4717: This PMP4717 is a general pourpose quasi-resonant isolated flyback, starting from universal line and delivering 18V @ 830mA. Particular attention to light load efficiency resulted in 54mW losses at no load and 115Vac input.
  • PMP8752 Class 1 Mulitple Output High Efficiency Flyback Converter for PoE Applications Reference Design | TI.com
    PMP8752: This converter is used for Class 1 PoE applications where high-efficiency and multiple-outputs are required. The multi-outputs for this design are 3.3V/0.7A, 5V/0.145A, 3.3V/1.5A. The flyback converter with synchronous rectifier provides excellent efficiency, and small size for PoE applications, such as an IP phone solution. The TPS23785B contains both the PoE powered device and the PWM controller functions.
  • 400VDC Input to 28V/9A Output Compact, High Efficiency CLL Resonant Converter Reference Design
    PMP9750: PMP9750 is a CLL resonant converter reference design with 400VDC input and 28V/9A ouput. Unlike LLC series resonant converter, CLL resonant converter used in PMP9750 utilizes its output inductor to minimize the size of the resonant tank. With resonant controller UCC25600 and bridge driver UCC27714, PMP9750 is able to achieve 95.7% peak efficiency.
  • PMP10861 24V to 12V/3.4A Active Clamp Forward Converter Reference Design with Robust System Protection | TI.com
    PMP10861: The PMP10861 uses active clamp forward converter for an isolated 24V to 12V/3.4A conversion. Reverse input connection, output over-current protection, output over-voltage protection, input inrush current limiting circuit are integrated in this board. With wide 9-36V input voltage range, over 89.5% peak efficiency is achieved with 24V input voltage. All the components temperature rise are less than 30oC at full load condition.
  • 85-265VACin, 24V/0.7A, 5V/0.25A
    PMP5536: The PMP5536 is a quasi-resonant isolated flyback; the input voiltage is the universal range and two outputs provide 5V @ 250mA, from an LDO, and a regulated 24V @ 700mA, 2.5A peak for 30milliseconds.
  • PMP10116 200W Natural Interleaving Transition-Mode PFC Flyback LED Driver Reference Design | TI.com
    PMP10116: The PMP10116 reference design uses the UCC28063A transition-mode pfc controller to drive LEDs up to 700mA current from an AC input. This flyback PFC topology provides isolation and uses quasi-resonant mode control. It supports analog dimming on the output side. Refer to LED Driver Based on UCC28060 Interleaved ACDC Single Stage Flyback for design guide
  • 36V-75VDC Input, 12V/10A Active Clamp Forward, 1/8th Brick Form Factor
    PMP7451: This reference design generates a 12V/10A output from a standard 48V telecom input. The UCC2897A controls an active clamp forward converter power stage. The low gate charge and low RDSon of the CSD18531Q5A, implemented as self-driven synchronous rectifiers, provide for a highly efficient design. This design is laid out in a standard 1/8th brick footprint and includes enable, remote sense, and output overvoltage features.
  • AC Input, 6 Channel LED Strings with 30W Output Reference Design
    PMP4484.8: The PMP4484 is a power reference design with AC input. It is a isolated LED driver, provides 6 channel LED outputs with PWM dimming. It implements a high PF flyback controller UCC28810 to output DC 40V, the Constant Current Buck LED Driver LM3414HV downs the voltage to 30V to drive LED. The degisn also provides 3.3Vo to MCU by the buck conller LMR16006, and a 10Vo to RS485. The system achieves high efficiency and high PF.
  • PMP4405 AC Input, Dual Output Power Supply Reference Design | TI.com
    PMP4405: The PMP4405 reference design uses the UCC28740 Flyback controller with valley-switching controller to generate dual DC output 5V/2A and 26V/0.3A from a universal AC input. The design is suited for auxiliary power for industrial applications and appliances. The design is fully tested and compliant with EMI regulations
  • Programmable output Constant Voltage - Constant Current (CVCC) Quasi-Resonant Flyback charger
    PMP8955: This industrial charger reference design uses the LM5023 Quasi-Resonant Flyback controller to implement a 120VAC input design with CVCC output configured by microcontroller PWM control from 10 to 22.5V and output current from 200mA to 2A.
  • AC Input, 6 Channel LED Strings with 30W Output Reference Design
    PMP4484.4: The PMP4484 is a power reference design with AC input. It is a isolated LED driver, provides 6 channel LED outputs with PWM dimming. It implements a high PF flyback controller UCC28810 to output DC 40V, the Constant Current Buck LED Driver LM3414HV downs the voltage to 30V to drive LED. The degisn also provides 3.3Vo to MCU by the buck conller LMR16006, and a 10Vo to RS485. The system achieves high efficiency and high PF.
  • PMP4484 AC Input, 6 Channel LED Strings with 30W Output Reference Design | TI.com
    PMP4484: The PMP4484 is a power reference design with AC input. It is a isolated LED driver, provides 6 channel LED outputs with PWM dimming. It implements a high PF flyback controller UCC28810 to output DC 40V, the Constant Current Buck LED Driver LM3414HV downs the voltage to 30V to drive LED. The degisn also provides 3.3Vo to MCU by the buck conller LMR16006, and a 10Vo to RS485. The system achieves high efficiency and high PF.
  • PMP11451 USB-IF Certified USB Type-C™ DFP 20V/3A/60W Out, Universal AC Input Reference Design | TI.com
    PMP11451: This power reference design provides up to 20 V/60 W over USB Type-C from a universal AC input range of 85 to 265 VAC for charger applications. The UCC24636 synchronous rectifier driver allows this design to provide 91% average efficiency. A daughter card provides the PD port control over the USB Type-C output connector. The required companion daughter card for this reference design is PMP11455. This design is USB-IF certified as a captive-cable power brick.
  • PMP4472 AC Input, 5V/3.3V2A Cascaded Power Supply Reference Design | TI.com
    PMP4472: The PMP4472 is a power reference design with a high AC input, 5Vout, followed by a DC isolated output of 3.3V at 2A. It implements a high efficiency controller UCC28740 to provide 5V bus voltage and a step-Down Converter TPS54228.The design achieves good line and load regulation as well as good dynamic response and low output ripple voltage.
  • PMP5687 150W 51.5V Bus Voltage Generator | TI.com
    PMP5687: A transition mode (TM) Boost PFC and a TM Buck deliver from high line a clean 80mA current to a LED string, max. voltage 312V. The PCB board has been developed to fit into a T8 fluorescent tube, suitable for retrofit purpose. A PWM dimming input is also included.
  • PMP10164 Universal AC Input, 10.5V/1.8A DC Output, Isolated Synchronous Flyback Converter Reference Design | TI.com
    PMP10164: The PMP10164 reference design supplies 10.5V@1.8A from universal AC mains; the isolated Flyback topology is the most used for low power range due to single magnetic component. Since the load is a power line communication chip, a fixed frequency modulation has been chosen. The controller LM5021 performs also pulse skip mode thus improving efficiency at light load. A synchronous rectification controller UCC24630 has been employed to increase the efficiency and the thermal performance.
  • PMP7167 Universal Line to 28.5V@800mA Isolated Flyback Power Supply with Transient Peak Power Capability | TI.com
    PMP7167: The PMP7167 is an isolated quasi resonant flyback using the UCC28610. Low standby current and fast startup time are the advantages of the cascode architecture. PMP7167 was built on the PMP5643 Rev_B PWB.
  • PMP2187 Flyback, Linear Regulator for Medical Pack (5.75V @ 10mA) | TI.com
    PMP2187: This design provides isolated 5V (x2), 3.3V, 2.5V and -5V outputs. All outputs are noise filtered using Low Drop Out (LDO) linear regulators for noise sensitive applications such as medical imaging and data acquisition.
  • PMP11303 High Efficiency 350W AC/DC Power Supply Reference Design | TI.com
    PMP11303: PMP11303 is high-efficiency AC/DC power supply reference design with universal AC input and 25V/13.5A and 12V/1A outputs. LLC+PFC combo IC UCC29950 is applied for the main power stages with 25V/13.5A output while UCC28730 is applied for the auxiliary power with 12V/1A output. This design has low no load power comsumption (152mW@230VAC) and over 93% peak efficiency. This design also meet 80PLUS Gold requirement for 115VAC Internal power supplies.
  • AC Input, 6 Channel LED Strings with 30W Output Reference Design
    PMP4484.1: The PMP4484 is a power reference design with AC input. It is a isolated LED driver, provides 6 channel LED outputs with PWM dimming. It implements a high PF flyback controller UCC28810 to output DC 40V, the Constant Current Buck LED Driver LM3414HV downs the voltage to 30V to drive LED. The degisn also provides 3.3Vo to MCU by the buck conller LMR16006, and a 10Vo to RS485. The system achieves high efficiency and high PF.
  • 18V to 60Vin to +/-12V, 13W
    PMP5666.1: The PMP5666 is a two outputs, +/-12V (+800mA and -250mA), isolated flyback working in continuous conduction mode thus reducing peak currents. The loop is closed to the +12V main output. The input voltage range is 18V…60V.
  • PMP10375 335W Single Stage LLC-SRC Converter Reference Design | TI.com
    PMP10375: The PMP10375 reference design is a single stage LLC series resonant converter (SRC), producing up to a 335W output using UCC25600 resonant controller. With the use of single stage LLC-SRC, the converter efficiency goes up to 90% at 335W full output power with 120VAC input.
  • High Efficiency 350W AC/DC Power Supply Reference Design
    PMP11303.1: PMP11303 is high-efficiency AC/DC power supply reference design with universal AC input and 25V/13.5A and 12V/1A outputs. LLC+PFC combo IC UCC29950 is applied for the main power stages with 25V/13.5A output while UCC28730 is applied for the auxiliary power with 12V/1A output. This design has low no load power comsumption (152mW@230VAC) and over 93% peak efficiency. This design also meet 80PLUS Gold requirement for 115VAC Internal power supplies.
  • UPOE High-Efficiency Flyback Converter (19V/2.3A) for Forced 4-Pair PoE PD Apps Reference Design
    TIDA-00539: TIDA-00539 uses two TPS2378 PD controllers for a forced 4-pair UPOE solution to 51W non-standard PoE PD applications. It incorportates the UCC2897A controller in a high-efficiency, great transient response (driven) synch flyback converter capble of 19V at 2.3A.
  • AC Input, 5V/3.3V2A Cascaded Power Supply Reference Design
    PMP4472.2: The PMP4472 is a power reference design with a high AC input, 5Vout, followed by a DC isolated output of 3.3V at 2A. It implements a high efficiency controller UCC28740 to provide 5V bus voltage and a step-Down Converter TPS54228.The design achieves good line and load regulation as well as good dynamic response and low output ripple voltage.
  • PMP5967 400VDCin, 12V@460W, LLC with Synchronous Rectifiers | TI.com
    PMP5967: The PMP5967 reference design provides a 12V/38A output with over 94% efficiency from a 380VDC input. This design uses the UCC25600 to control the resonant LLC converter. The UCC24610 synchronous rectifier controller is used to control two banks of CSD18501Q5A MOSFETs, eliminating the need for heat sinks on the output rectifiers.
  • 335W Single Stage LLC-SRC Converter Reference Design - PMP10375.2 - TI Tool Folder
    PMP10375: The PMP10375 reference design is a single stage LLC series resonant converter (SRC), producing up to a 335W output using UCC25600 resonant controller. With the use of single stage LLC-SRC, the converter efficiency goes up to 90% at 335W full output power with 120VAC input.
  • Backup Power Solution Using Supercap with TPS61030 for Data Concentrator Circuit Reference Design
    PMP9755: This reference design delivers a backup power circuit using a supercap with the boost converter TPS61030. In the low-power system that requires a backup switchover circuit at system's failure, a supercap together with TPS61030 could provide sufficient power to maintain data communication prior to the whole system's complete shutdown.
  • PMP10110 Universal AC Input to 30Vmax@6A Lead-acid Battery Charger Reference Design with PFC | TI.com
    PMP10110: The PMP10110 design converts the universal input AC voltage to isolated 17V...30V@6A and is suitable to charge lead-acid or Li-Ion batteries. The converter is a constant-V and constant-I genarator and the set points for output voltage (charge level) and current are settable by means of two PWM signals. The first stage is a PFC boost while the isolation ad current stabilization is performed by DC-DC half bridge stage. An isolated quasi-resonant flyback converter supplies all internal voltages and provide some extra current for external loads (fan or analog section), in details 12V@400mA and 5V@300mA.
  • PMP10145 38W Offline AC/DC Transition Mode Synchronous Flyback Converter Reference Design | TI.com
    PMP10145: The PMP10145 reference design uses the UCC28610 flyback controller for the transition mode flyback topology. It generates an isolated output (9V@4.22A) from a wide AC input voltage range (80VAC - 291VAC). The controller maintains discontinuous mode operation and valley switching over the entire operating range. The UCC24630 synchronous rectifier controller provides good efficiency at heavy loads.
  • PMP4496 USB-C DRP Power Bank With Fast Charger Input Reference Design | TI.com
    PMP4496: PMP4496 is a power bank reference design with a single USB type C dual role port (DRP). It can perform as a SINK or SOURCE. Role is automatically determined according to the external device attached. Fast charger input is also supported to save more charging time.
  • USB-C DFP + 5V2A Power Bank With Input Fast Charger Reference Design
    PMP11536: PMP11536 is a power bank reference design with a USB typc C DFP plus a USB type A port employing the boost mode of a Maxcharger. Fast charger input is also supported to save more charging time. It can detect the input port attach/detach events automatically, as well as the output ports.
  • PMP10375 335W Single Stage LLC-SRC Converter Reference Design | TI.com
    PMP10375: The PMP10375 reference design is a single stage LLC series resonant converter (SRC), producing up to a 335W output using UCC25600 resonant controller. With the use of single stage LLC-SRC, the converter efficiency goes up to 90% at 335W full output power with 120VAC input.
  • PMP10478 85 to 265VAC Input 5V@30W Dual Port Charger For Tablets and Smart Phones Reference Design | TI.com
    PMP10478: This reference design is capable of charging two devices at 2.5A each with over 82% efficiency. The UCC24610 synchronous rectifier controller and CSD17312Q5 FET reduce the rectifier loss and provide high efficiency with a minimal increase in cost. The TPS2561A provides accurate and independent current limit protection for each port. The TPS2513 communicates with the mobile device under charge to ensure that the charger is accepted by most phone and tablet models. This compact design consumes a volume of only 2.15" x 1.7" x 1.0".
  • Class 1 Mulitple Output High Efficiency Flyback Converter for PoE Applications Reference Design
    PMP8752.1: This converter is used for Class 1 PoE applications where high-efficiency and multiple-outputs are required. The multi-outputs for this design are 3.3V/0.7A, 5V/0.145A, 3.3V/1.5A. The flyback converter with synchronous rectifier provides excellent efficiency, and small size for PoE applications, such as an IP phone solution. The TPS23785B contains both the PoE powered device and the PWM controller functions.
  • Universal AC Input to 30Vmax@6A Lead-acid Battery Charger Reference Design with PFC - PMP10110.1 - TI Tool Folder
    PMP10110: The PMP10110 design converts the universal input AC voltage to isolated 17V...30V@6A and is suitable to charge lead-acid or Li-Ion batteries. The converter is a constant-V and constant-I genarator and the set points for output voltage (charge level) and current are settable by means of two PWM signals. The first stage is a PFC boost while the isolation ad current stabilization is performed by DC-DC half bridge stage. An isolated quasi-resonant flyback converter supplies all internal voltages and provide some extra current for external loads (fan or analog section), in details 12V@400mA and 5V@300mA.
  • TIDA-00520 300-W PFC plus Resonant LLC Half-Bridge controller off-line AC/DC PSU Module | TI.com
    TIDA-00520: This is a high efficiency 300-W AC/DC reference design. The design can be biased from external supply or configured for Self-Bias Auxillary mode for operation directly off the AC mains. The PFC is fully internally compensated, reducing design complexity and pcb design. Protections include 3-level OCP, line brown-out, PFC Bulk OVP plus UVP and OTP.
  • Flyback, Linear Regulator for Medical Pack (5V @ 440mA)
    PMP2187.2: This design provides isolated 5V (x2), 3.3V, 2.5V and -5V outputs. All outputs are noise filtered using Low Drop Out (LDO) linear regulators for noise sensitive applications such as medical imaging and data acquisition.
  • PMP2187 Flyback, Linear Regulator for Medical Pack (5.75V @ 10mA) | TI.com
    PMP2187: This design provides isolated 5V (x2), 3.3V, 2.5V and -5V outputs. All outputs are noise filtered using Low Drop Out (LDO) linear regulators for noise sensitive applications such as medical imaging and data acquisition.
  • PMP4466 Universal AC Input to 5V 3A Output Reference Design DOE6 and CoC V5 Tier 2 Compliant | TI.com
    PMP4466: The PMP4466 is an AC input to 5V 3A output reference design for high current charger applications, such as USB Type-C. The topology is Synchronous Rectified valley switched DCM Flyback which uses the UCC28740 and UCC24636. Good regulation and dynamic performance is achieved by using the secondary side regulation controller UCC28740. Also Volt-Second balancing SR controller UCC24636 is adopted in the design to improve the efficiency. The solution easily exceeds DoE Level VI and EU CoC V5 Tier-2 standards.
  • PMP8923 Non-Standard PoE (>25.5W) - High Efficiency Forward Converter (5V@10A) Reference Design | TI.com
    PMP8923: This converter provides a high power PoE output of 5V/10A. The TPS2379 PD controller allows the use of an external hot swap FET for increased efficiency. The UCC2897A PWM controller is used to implement a high efficiency active clamp forward converter.
  • PMP11254 Class 4 PoE Flyback Converter (12V@2.125A) Reference Design | TI.com
    PMP11254: The flyback topology with diode rectification provides a low cost solution for Class 4 PoE applications. The TPS23751 is a combination PoE PD controller and PWM controller, saving cost and space. This converter is well suited for PoE applications such as security cameras and wireless access points.
  • PMP6961 220V-400VDC Input, 12V/100W Active Clamp Forward | TI.com
    PMP6961: This reference design generates an isolated 12V/100W output from a high voltage DC input. This design is intended to operate from the output of a PFC front end regulator. The UCC2897A is used to control an active clamp forward converter. Self-driven synchronous rectifiers allow for over 91% efficiency. An accurate current limit is provided by directly sensing the output current. A clock pulse output is also provided for synchronizing with other converters.
  • PMP8752 Class 1 Mulitple Output High Efficiency Flyback Converter for PoE Applications Reference Design | TI.com
    PMP8752: This converter is used for Class 1 PoE applications where high-efficiency and multiple-outputs are required. The multi-outputs for this design are 3.3V/0.7A, 5V/0.145A, 3.3V/1.5A. The flyback converter with synchronous rectifier provides excellent efficiency, and small size for PoE applications, such as an IP phone solution. The TPS23785B contains both the PoE powered device and the PWM controller functions.
  • TIDM-SOLARUINV Grid-tied Solar Micro Inverter with MPPT | TI.com
    TIDM-SOLARUINV: This design is a digitally-controlled, grid-tied, solar micro inverter with maximum power point tracking (MPPT). Solar micro inverters are an emerging segment of the solar power industry. Rather than linking every solar panel in an installation to a central inverter, solar micro inverter-based installations link smaller, or “micro,” inverters individually to each solar panel. This configuration lends itself to many benefits, including elimination of partial shading conditions, increased system efficiency, improved reliability and greater modularity. For this design, a C2000™ Piccolo™ TMS320F28035 microcontroller (MCU) is the digital controller for the complete inverter, including control of the power stages, MPPT, and grid-tie synchronization. The power conversion stages include 1) an active clamp fly-back DC/DC converter with secondary voltage multiplier and 2) a grid-tied, DC/AC inverter. The design achieves 93 percent peak efficiency and less than 4 percent total harmonic distortion, providing more power output per solar panel, reducing detrimental heat dissipation, and increasing system longevity.
  • PMP11237 Power Supply Reference Design with Single Layer PCB and UCC29950 LLC+PFC Combo Controller | TI.com
    PMP11237: PMP11237 is a complete AC/DC power supply reference design with universal AC input and 12V/25A output. LLC+PFC combo IC UCC29950 is applied as the main controller with high voltage bridge gate driver UCC27714 applied as the driver of the LLC input MOSFETs. This design evaluates the performance of UCC29950 combo IC on a single layer board.
  • PMP8803 Class 3- Low Cost 12V/1A Flyback Converter for PoE Applications Reference Design | TI.com
    PMP8803: This converter is used for Class 3 PoE applications. The flyback converter with diode rectifier offers low cost while still achieving good efficiency. This converter is well sutied for PoE applications such as IP security cameras. The TPS23753A contains both the PoE Powered Device and the PWM controller functions.
  • PMP10666 Low Vin Flyback Reference Design for High Voltage Laser Flash Drive | TI.com
    PMP10666: PMP10666 is a 12W isolated flyback design that supports very low Vin of 3.3V-6V and is capable of delivering 100mA at 120V output. The design uses LM3481 Boost controller IC which works on current mode operation and can be synchronized to any frequency between 100KHz to 1 MHz. This design was built on a 2 layer board and is a simple, low-BOM-count, and low-cost design providing an isolated output.
  • Universal supply source - 12VAC / 12VDC to 300mA SEPIC converter for MR16 / AR111 (3&4 LEDs / 10V ~1
    PMP8021: The main purpose of this reference design is to demonstrate a very good compatibility of Power source SEPIC topology LED driver based on TPS92560. This LED driver is designed for converting a power source DC, AC & E-transformer to a regulated LED current. The operating conditions and performance of the reference design are as follows: 12VDC, or 12Vac / 50Hz 60Hz, or 12VAC E-transformer, Output Power 3 ~ 4W, 10 ~13V LED voltage , 300mA Regulated LED Current , 75% Typical System Efficiency, High Power Factor > 0.9, Output Short-Circuit and output Open-Circuit Protection.
  • 85 to 265VAC Input 12V@3A High Efficiency Adapator Reference Design
    PMP9715: This reference design provides an isolated 12V/36W output from a universal AC input range with over 89% peak efficiency. The UCC24610 synchronous rectifier controller and CSD19531Q5A FET reduce the rectifier loss and provide high efficiency with a minimal increase in cost. The UCC28740 flyback controller uses a combination of peak current modulation and frequency modulation to maintain excellent efficiency at lighter loads and minimize no load power consumption. The current regulation feature of the UCC28740 provides accurate current limit protection. This compact design consumes a volume of only 2.0" x 2.0" x 0.75".
  • AC Input, 6 Channel LED Strings with 30W Output Reference Design
    PMP4484.3: The PMP4484 is a power reference design with AC input. It is a isolated LED driver, provides 6 channel LED outputs with PWM dimming. It implements a high PF flyback controller UCC28810 to output DC 40V, the Constant Current Buck LED Driver LM3414HV downs the voltage to 30V to drive LED. The degisn also provides 3.3Vo to MCU by the buck conller LMR16006, and a 10Vo to RS485. The system achieves high efficiency and high PF.
  • AC Input, Dual Output Power Supply Reference Design - PMP4405.1 - TI Tool Folder
    PMP4405: The PMP4405 reference design uses the UCC28740 Flyback controller with valley-switching controller to generate dual DC output 5V/2A and 26V/0.3A from a universal AC input. The design is suited for auxiliary power for industrial applications and appliances. The design is fully tested and compliant with EMI regulations
  • Flyback, Linear Regulator for Medical Pack (5.75V @ 10mA)
    PMP2187.8: This design provides isolated 5V (x2), 3.3V, 2.5V and -5V outputs. All outputs are noise filtered using Low Drop Out (LDO) linear regulators for noise sensitive applications such as medical imaging and data acquisition.
  • PMP10215 Universal Input to 3.3V, 12V, 36V, 200W Continuous PSU for Class-D Amplifier Reference Design | TI.com
    PMP10215: This power module generates all voltages to supply a class-D audio amplifier. The main output voltage is 36V and delivers 200W continuously and 840W peak. The first stage is a power-factor corrected Boost. A Flyback converter supplies 12V on primary side as well as 12V@300mA and 3.3V@200mA on secondary side. A hardware switch + remote input let the converter enter in stand-by mode: in this status the 36V output is disabled and 12V, 3.3V are "always on". This way the stand-by power is reduced down to 150mW @ 115Vac and 270mW @ 230Vac. A second digital input switches the main output voltage from 36V to 18V, allowing low current consumption mode in case of the audio amplifier needs less power.
  • Non-Standard (>25.5W) PoE - High Efficiency Forward Converter (5V@10A) Reference Design
    PMP8923: This converter provides a high power PoE output of 5V/10A. The TPS2379 PD controller allows the use of an external hot swap FET for increased efficiency. The UCC2897A PWM controller is used to implement a high efficiency active clamp forward converter.
  • Grid-tied Solar Micro Inverter with MPPT
    TIDM-SOLARUINV: This design is a digitally-controlled, grid-tied, solar micro inverter with maximum power point tracking (MPPT). Solar micro inverters are an emerging segment of the solar power industry. Rather than linking every solar panel in an installation to a central inverter, solar micro inverter-based installations link smaller, or “micro,” inverters individually to each solar panel. This configuration lends itself to many benefits, including elimination of partial shading conditions, increased system efficiency, improved reliability and greater modularity. For this design, a C2000™ Piccolo™ TMS320F28035 microcontroller (MCU) is the digital controller for the complete inverter, including control of the power stages, MPPT, and grid-tie synchronization. The power conversion stages include 1) an active clamp fly-back DC/DC converter with secondary voltage multiplier and 2) a grid-tied, DC/AC inverter. The design achieves 93 percent peak efficiency and less than 4 percent total harmonic distortion, providing more power output per solar panel, reducing detrimental heat dissipation, and increasing system longevity.
  • 200W Natural Interleaving Transition-Mode PFC Flyback LED Driver Reference Design
    PMP10116: This design uses the UCC28063A transition-mode pfc controller to drive LEDs up to 700mA current from an AC input. This flyback pfc topology provides isolation and uses quasi-resonant mode control. It supports analog dimming on the output side.
  • Universal AC Input to 30Vmax@6A Lead-acid Battery Charger Reference Design with PFC
    PMP10110.1: The PMP10110 design converts the universal input AC voltage to isolated 17V...30V@6A and is suitable to charge lead-acid or Li-Ion batteries. The converter is a constant-V and constant-I genarator and the set points for output voltage (charge level) and current are settable by means of two PWM signals. The first stage is a PFC boost while the isolation ad current stabilization is performed by DC-DC half bridge stage. An isolated quasi-resonant flyback converter supplies all internal voltages and provide some extra current for external loads (fan or analog section), in details 12V@400mA and 5V@300mA.
  • PMP8408 Class 3 - Mulitple Output, High Efficiency Driven Flyback Converter for PoE Applications | TI.com
    PMP8408: This converter is used for Class 3 PoE applications where high efficiency and multiple outputs are required. The flyback converter with synchronous rectifier provides excellent efficiency and small size for PoE applications such as IP Phones. The TPS23785B contains both the PoE Powered Device and the PWM controller functions.
  • PMP8366 36V-75VDC Input, 5V/20A Active Clamp Forward, 1/8th Brick Form Factor | TI.com
    PMP8366: This reference design generates a 5V/20A output from a standard 48V telecom input. The UCC2897A controls an active clamp forward converter power stage. The low gate charge and low RDSon of the CSD17312Q5, implemented as self-driven synchronous rectifiers, provide for a highly efficient design. This design is laid out in a standard 1/8th brick footprint and includes enable, remote sense, and output overvoltage features.
  • AC Input, 6 Channel LED Strings with 30W Output Reference Design
    PMP4484.7: The PMP4484 is a power reference design with AC input. It is a isolated LED driver, provides 6 channel LED outputs with PWM dimming. It implements a high PF flyback controller UCC28810 to output DC 40V, the Constant Current Buck LED Driver LM3414HV downs the voltage to 30V to drive LED. The degisn also provides 3.3Vo to MCU by the buck conller LMR16006, and a 10Vo to RS485. The system achieves high efficiency and high PF.
  • PMP11536 USB-C DFP + 5V2A Power Bank With Input Fast Charger Reference Design | TI.com
    PMP11536: PMP11536 is a power bank reference design with a USB typc C DFP plus a USB type A port employing the boost mode of a Maxcharger. Fast charger input is also supported to save more charging time. It can detect the input port attach/detach events automatically, as well as the output ports.
  • 36V-75VDC Input, 5V/20A Active Clamp Forward, 1/8th Brick Form Factor
    PMP8366: This reference design generates a 5V/20A output from a standard 48V telecom input. The UCC2897A controls an active clamp forward converter power stage. The low gate charge and low RDSon of the CSD17312Q5, implemented as self-driven synchronous rectifiers, provide for a highly efficient design. This design is laid out in a standard 1/8th brick footprint and includes enable, remote sense, and output overvoltage features.
  • PMP8408 Class 3 - Mulitple Output, High Efficiency Driven Flyback Converter for PoE Applications | TI.com
    PMP8408: This converter is used for Class 3 PoE applications where high efficiency and multiple outputs are required. The flyback converter with synchronous rectifier provides excellent efficiency and small size for PoE applications such as IP Phones. The TPS23785B contains both the PoE Powered Device and the PWM controller functions.
  • PMP10712 Low Vin, Small Form Factor Flyback Reference Design for High Voltage Laser Flash Drive | TI.com
    PMP10712: PMP10712 is a 1.2W, small form factor, isolated flyback design that supports very low Vin of 3.3V-6V and is capable of delivering 10mA at 120V output. The design uses LM3481 Boost controller IC which works on current mode operation and can be synchronized to any frequency between 100KHz to 1 MHz. This design was built on a 2 layer board and is a simple, low-BOM-count, and low-cost design providing an isolated output.
  • High Efficiency 350W AC/DC Power Supply Reference Design
    PMP11303.2: PMP11303 is high-efficiency AC/DC power supply reference design with universal AC input and 25V/13.5A and 12V/1A outputs. LLC+PFC combo IC UCC29950 is applied for the main power stages with 25V/13.5A output while UCC28730 is applied for the auxiliary power with 12V/1A output. This design has low no load power comsumption (152mW@230VAC) and over 93% peak efficiency. This design also meet 80PLUS Gold requirement for 115VAC Internal power supplies.
  • High Efficiency 100W Active Clamp Forward 220V-400VDC Input, 28V/ 3.6A Reference Design
    PMP7453: This reference design generates an isolated 28V/100W output from a high voltage DC input. This design is intended to operate from the output of PFC front end regulator. The UCC2897A is used to control an active clamp forward converter. Self-driven synchronous rectifiers allow for over 92% efficiency. An accurate current limit is provided by directly sensing the output current. A clock pulse output is also provided for synchronizing with other converters.
  • AC in, 5V 3A Quasi-resonant Flyback Converter with Optimized Light Load Efficiency Reference Design
    PMP4478: The PMP4478 is an optimized reference design for appliance applications which provides high current. Low ripple & noise < 50mV is achieved via Pi type filter at the output. The design also achieves good light load efficiency with optimized transformer design. When the load is 300mW, the input power can still be limited to less than 420mW.
  • Flyback, Linear Regulator for Medical Pack (-5V @ 10mA)
    PMP2187.6: This design provides isolated 5V (x2), 3.3V, 2.5V and -5V outputs. All outputs are noise filtered using Low Drop Out (LDO) linear regulators for noise sensitive applications such as medical imaging and data acquisition.
  • PMP8955 Programmable output Constant Voltage - Constant Current (CVCC) Quasi-Resonant Flyback charger | TI.com
    PMP8955: This industrial charger reference design uses the LM5023 Quasi-Resonant Flyback controller to implement a 120VAC input design with CVCC output configured by microcontroller PWM control from 10 to 22.5V and output current from 200mA to 2A.
  • 90VAC-400VAC Input, 12V/3W Quasi-Resonant Flyback
    PMP4242: This reference design uses the UCC28600 quasi-resonant flyback controller to generate an isolated 12V/3W output from a extremely wide ranging 90VAC-400VAC input. The energy saving features of the UCC28600 allow this compact design to maintain high efficiency at heavier loads, while minimizing losses at light loads.
  • 150W 51.5V Bus Voltage Generator
    PMP5687: A transition mode (TM) Boost PFC and a TM Buck deliver from high line a clean 80mA current to a LED string, max. voltage 312V. The PCB board has been developed to fit into a T8 fluorescent tube, suitable for retrofit purpose. A PWM dimming input is also included.
  • PMP2796 Negative Output Flyback, 5V Input to -150V at 130mA using the UCC3813 | TI.com
    PMP2796: PMP2796 uses the UCC3813 low side driver to create a negative output flyback converter. This flyback is a non-isolated version that generates a high voltage negative output.
  • High-line 185V to 265V AC input; 12 V @ 2A output Isolated Flyback AC to DC Converter
    PMP7188: This power reference design uses the LM5021 AC-DC Current Mode PWM controller. The switching frequency is programmed at 130KHz in an isolated flyback topology with minimal external components and small form factor size. The design is optimized for high-line input and 12V / 2A output. High Efficiency is achieved over load range thanks to the skip cycle mode and ultra low start-up current of the LM5021 controller.
  • AC Input, 6 Channel LED Strings with 30W Output Reference Design
    PMP4484.5: The PMP4484 is a power reference design with AC input. It is a isolated LED driver, provides 6 channel LED outputs with PWM dimming. It implements a high PF flyback controller UCC28810 to output DC 40V, the Constant Current Buck LED Driver LM3414HV downs the voltage to 30V to drive LED. The degisn also provides 3.3Vo to MCU by the buck conller LMR16006, and a 10Vo to RS485. The system achieves high efficiency and high PF.
  • TIDA-00539 UPOE High-Efficiency Flyback Converter (19V/2.3A) for Forced 4-Pair PoE PD Apps Reference Design | TI.com
    TIDA-00539: TIDA-00539 uses two TPS2378 PD controllers for a forced 4-pair UPOE solution to 51W non-standard PoE PD applications. It incorportates the UCC2897A controller in a high-efficiency, great transient response (driven) synch flyback converter capble of 19V at 2.3A.
  • Flyback, Linear Regulator for Medical Pack (3.3V @ 220mA)
    PMP2187.4: This design provides isolated 5V (x2), 3.3V, 2.5V and -5V outputs. All outputs are noise filtered using Low Drop Out (LDO) linear regulators for noise sensitive applications such as medical imaging and data acquisition.
  • 335W Single Stage LLC-SRC Converter Reference Design
    PMP10375.1: The PMP10375 reference design is a single stage LLC series resonant converter (SRC), producing up to a 335W output using UCC25600 resonant controller. With the use of single stage LLC-SRC, the converter efficiency goes up to 90% at 335W full output power with 120VAC input.
  • PMP20533 USB Type-C™ DFP 15V/3A/45W Out, Universal AC Input Reference Design | TI.com
    PMP20533: The PMP20533 power reference design provides up to 15 V/45 W over USB Type-C from a universal AC input range of 85 to 265 VAC for charger applications. The UCC24636 synchronous rectifier driver allows this design to provide 91% average efficiency. The TPS25740A provides the interface between the flyback power supply and the Type-C cable. The PMP20533 has been certified as a power brick by the USB-IF (Product Test ID: 1020017).
  • PMP7188 High-line 185V to 265V AC input; 12 V @ 2A output Isolated Flyback AC to DC Converter | TI.com
    PMP7188: This power reference design uses the LM5021 AC-DC Current Mode PWM controller. The switching frequency is programmed at 130KHz in an isolated flyback topology with minimal external components and small form factor size. The design is optimized for high-line input and 12V / 2A output. High Efficiency is achieved over load range thanks to the skip cycle mode and ultra low start-up current of the LM5021 controller.
  • TIDA-00741 Non-Standard PoE, UPOE High-Efficiency Flyback Converter Reference Design for PoE PD Applications | TI.com
    TIDA-00741: TIDA-00741 uses two TPS2378 PD controllers for a forced 4-pair UPOE solution to 51W non-standard PoE PD applications. It incorportates the UCC2897A controller in a high-efficiency, great transient response (driven) synch flyback converter capble of 12V at 3.8A.
  • PMP7019 Quasi Resonant Flyback, 80-440V AC, 12V@0.5A using UCC28600 up to 91% efficiency | TI.com
    PMP7019: The PMP7019 reference design is a wide-input Quasi Resonant Flyback designed for industrial applications. It uses the UCC28600 controller to an isolated 48V/1A output from an 80Vac to 440Vac input range. The quasi-resonant switching of the UCC28600 allows this design to achieve a maximum load efficiency up to 91%.
  • PMP7453 High Efficiency 100W Active Clamp Forward 220V-400VDC Input, 28V/ 3.6A Reference Design | TI.com
    PMP7453: This reference design generates an isolated 28V/100W output from a high voltage DC input. This design is intended to operate from the output of PFC front end regulator. The UCC2897A is used to control an active clamp forward converter. Self-driven synchronous rectifiers allow for over 92% efficiency. An accurate current limit is provided by directly sensing the output current. A clock pulse output is also provided for synchronizing with other converters.
  • Low Vin Flyback Reference Design for High Voltage Laser Flash Drive
    PMP10666: PMP10666 is a 12W isolated flyback design that supports very low Vin of 3.3V-6V and is capable of delivering 100mA at 120V output. The design uses LM3481 Boost controller IC which works on current mode operation and can be synchronized to any frequency between 100KHz to 1 MHz. This design was built on a 2 layer board and is a simple, low-BOM-count, and low-cost design providing an isolated output.
  • Flyback, Linear Regulator for Medical Pack (5V @ 50mA)
    PMP2187.3: This design provides isolated 5V (x2), 3.3V, 2.5V and -5V outputs. All outputs are noise filtered using Low Drop Out (LDO) linear regulators for noise sensitive applications such as medical imaging and data acquisition.
  • PMP9755 Backup Power Solution Using Supercap with TPS61030 for Data Concentrator Circuit Reference Design | TI.com
    PMP9755: This reference design delivers a backup power circuit using a supercap with the boost converter TPS61030. In the low-power system that requires a backup switchover circuit at system's failure, a supercap together with TPS61030 could provide sufficient power to maintain data communication prior to the whole system's complete shutdown.
  • Universal Supply Source - 12VAC / 12VDC to 300mA Boost Converter for MR16 / AR111 (7 LEDs / 21V) Ap
    PMP8022: The main purpose of this reference design is to demonstrate a very good compatibility of Power source boost topology LED driver based on TPS92560. This LED driver is designed for converting a power source DC, AC & E-transformer to a regulated LED current. The operating conditions and performance of the reference design are as follows: 12VDC, or 12Vac / 50Hz 60Hz, or 12VAC E-transformer, Output Power 6W, 21V LED voltage , 300mA Regulated LED Current , 85% Typical System Efficiency, High Power Factor > 0.9, Output Short-Circuit and output Open-Circuit Protection.
  • PMP20742 36V-60V Input 12V/5A Highly Efficient Active Clamp Forward Reference Design | TI.com
    PMP20742: The PMP20742 reference design provides 12V at 5A (60W) from a 36V-60Vdc input with over 94% efficiency. This design uses the UCC2897A active clamp controller along with synchronous rectifiers to achieve very high efficiency. Typical applications include Power Over Ethernet, Telecom, and Server systems.
  • PMP4242 90VAC-400VAC Input, 12V/3W Quasi-Resonant Flyback | TI.com
    PMP4242: This reference design uses the UCC28600 quasi-resonant flyback controller to generate an isolated 12V/3W output from a extremely wide ranging 90VAC-400VAC input. The energy saving features of the UCC28600 allow this compact design to maintain high efficiency at heavier loads, while minimizing losses at light loads.
  • PMP30047 Two Elements Lead-Acid 16V…32V@2A Battery Charger from 170VAC to 270VAC Reference Design | TI.com
    PMP30047: A quasi-resonant isolated flyback is employed to charge two lead-acid battery elements, starting from high-line mains. The converter accepts two external signals (referred to secondary side) to provide the reference voltages, which set output voltage and current. The converter shows good wide-range efficiency thanks to valley-switching modulation.
  • Negative Output Flyback, 5V Input to -150V at 130mA using the UCC3813
    PMP2796: PMP2796 uses the UCC3813 low side driver to create a negative output flyback converter. This flyback is a non-isolated version that generates a high voltage negative output.
  • PMP4717 Quasi-Resonant Isolated Flyback 85-265VACin, 18V/830mA | TI.com
    PMP4717: This PMP4717 is a general pourpose quasi-resonant isolated flyback, starting from universal line and delivering 18V @ 830mA. Particular attention to light load efficiency resulted in 54mW losses at no load and 115Vac input.
  • PMP20195 Off Line Power Supply for Audio Reference Design | TI.com
    PMP20195: Universal line input to + and -24 V DC output designed for audio applications. The supply uses a two switch fly back topology with a low cost LM5021 controller. The supply is designed to handle 150 watts peak power required by an audio amplifier but thermally designed for the lower average power common in audio applications.
  • Flyback, Linear Regulator for Medical Pack (5.5V @ 500mA)
    PMP2187.1: This design provides isolated 5V (x2), 3.3V, 2.5V and -5V outputs. All outputs are noise filtered using Low Drop Out (LDO) linear regulators for noise sensitive applications such as medical imaging and data acquisition.
  • PMP4472 AC Input, 5V/3.3V2A Cascaded Power Supply Reference Design | TI.com
    PMP4472: The PMP4472 is a power reference design with a high AC input, 5Vout, followed by a DC isolated output of 3.3V at 2A. It implements a high efficiency controller UCC28740 to provide 5V bus voltage and a step-Down Converter TPS54228.The design achieves good line and load regulation as well as good dynamic response and low output ripple voltage.
  • PMP4489 USB Type-C PD DFP Charger 5V/12V3A Out Adapter Reference Design | TI.com
    PMP4489: The PMP4489 reference design is a dedicated USB-C PD2.0 DFP 5V/12V3A output flyback converter with secondary-side regulation UCC28740DR which provides Constant-Voltage Constant-Current feature. The design features <75mW standby power(compliant with DOE 6 &CoC V5 Tier 2 standard). Secondary voltage-second balance synchronous rectifier UCC24636 enables high efficiency with maximum SR conduction time . TPS25740 implements a fully compliant USB Power Delivery 2.0 provider and Type-C downward facing port(DFP).
  • PMP9715 85 to 265VAC Input 12V@3A High Efficiency Adapator Reference Design | TI.com
    PMP9715: This reference design provides an isolated 12V/36W output from a universal AC input range with over 89% peak efficiency. The UCC24610 synchronous rectifier controller and CSD19531Q5A FET reduce the rectifier loss and provide high efficiency with a minimal increase in cost. The UCC28740 flyback controller uses a combination of peak current modulation and frequency modulation to maintain excellent efficiency at lighter loads and minimize no load power consumption. The current regulation feature of the UCC28740 provides accurate current limit protection. This compact design consumes a volume of only 2.0" x 2.0" x 0.75".
  • 400VDCin, 12V@460W, LLC with Synchronous Rectifiers
    PMP5967: The PMP5967 reference design provides a 12V/38A output with over 94% efficiency from a 380VDC input. This design uses the UCC25600 to control the resonant LLC converter. The UCC24610 synchronous rectifier controller is used to control two banks of CSD18501Q5A MOSFETs, eliminating the need for heat sinks on the output rectifiers.
  • PMP9727 120VAC Input, 48V/12V 32W Flyback Reference Design | TI.com
  • PMP8020 TPS92560 High Power 20W Boost LED Driver Reference Design | TI.com
    PMP8020: The main purpose of this reference design is to demonstrate a very good compatibility of Power source boost topology LED driver based on TPS92560. This LED driver is designed for converting a power source DC, AC & E-transformer to a regulated LED current. The operating conditions and performance of the reference design are as follows: 12VDC, or 12Vac / 50Hz 60Hz, or 12VAC E-transformer, Output Power 20W, 30-40V LED voltage , 500mA Regulated LED Current , 86% Typical System Efficiency, High Power Factor > 0.9, and output Open-Circuit Protection.
  • 85 to 265VAC Input 5V@30W Dual Port Charger For Tablets and Smart Phones Reference Design
    PMP10478: This reference design is capable of charging two devices at 2.5A each with over 82% efficiency. The UCC24610 synchronous rectifier controller and CSD17312Q5 FET reduce the rectifier loss and provide high efficiency with a minimal increase in cost. The TPS2561A provides accurate and independent current limit protection for each port. The TPS2513 communicates with the mobile device under charge to ensure that the charger is accepted by most phone and tablet models. This compact design consumes a volume of only 2.15" x 1.7" x 1.0".
  • 24V@2A, 5V@0.6A PFC Flyback - PMP5688.2 - TI Tool Folder
    PMP5688: This Buck converter accepts the 24V input from PMP5688.1 and supplies the digital part of the load in LED digital architectures.
  • PMP10834 85-265Vin, 5Vout, 1Aout, AC-DC Fly-Buck Converter Reference Design | TI.com
    PMP10834: The PMP10834RevA reference design is a compact and thermally efficient design intended to step down a wide range of AC inputs (85VAC to 265VAC). This non-isolated Flybuck design incorporates the UCC28C42 PWM with an optocoupler feedback to provide 1% output voltage regulation. All the circuit components (including magnetics) are standard parts.
  • Universal AC Input to 30Vmax@6A Lead-acid Battery Charger Reference Design with PFC
    PMP10110.4: The PMP10110 design converts the universal input AC voltage to isolated 17V...30V@6A and is suitable to charge lead-acid or Li-Ion batteries. The converter is a constant-V and constant-I genarator and the set points for output voltage (charge level) and current are settable by means of two PWM signals. The first stage is a PFC boost while the isolation ad current stabilization is performed by DC-DC half bridge stage. An isolated quasi-resonant flyback converter supplies all internal voltages and provide some extra current for external loads (fan or analog section), in details 12V@400mA and 5V@300mA.
  • Class 3- Low Cost 12V/1A Flyback Converter for PoE Applications Reference Design
    PMP8803: This converter is used for Class 3 PoE applications. The flyback converter with diode rectifier offers low cost while still achieving good efficiency. This converter is well sutied for PoE applications such as IP security cameras. The TPS23753A contains both the PoE Powered Device and the PWM controller functions.
  • PMP4478 AC in, 5V 3A Quasi-resonant Flyback Converter with Optimized Light Load Efficiency Reference Design | TI.com
    PMP4478: The PMP4478 is an optimized reference design for appliance applications which provides high current. Low ripple & noise < 50mV is achieved via Pi type filter at the output. The design also achieves good light load efficiency with optimized transformer design. When the load is 300mW, the input power can still be limited to less than 420mW.
  • Isolated Non-synchronous Flyback Converts Universal Vin to 18V@550mA Reference Design
    PMP8586: The LM5021-2 is an off-line controller that can work in CCM and DCM. A pulse skip mode improves the efficiency of this isolated flyback, and flattens the curve at most loads. It is also suitable for power line communication PSU.
  • AC Input, Dual Output Power Supply Reference Design
    PMP4405.1: The PMP4405 reference design uses the UCC28740 Flyback controller with valley-switching controller to generate dual DC output 5V/2A and 26V/0.3A from a universal AC input. The design is suited for auxiliary power for industrial applications and appliances. The design is fully tested and compliant with EMI regulations
  • AC Input, Dual Output Power Supply Reference Design
    PMP4405.2: The PMP4405 reference design uses the UCC28740 Flyback controller with valley-switching controller to generate dual DC output 5V/2A and 26V/0.3A from a universal AC input. The design is suited for auxiliary power for industrial applications and appliances. The design is fully tested and compliant with EMI regulations
  • PMP5536 85-265VACin, 24V/0.7A, 5V/0.25A | TI.com
    PMP5536: The PMP5536 is a quasi-resonant isolated flyback; the input voiltage is the universal range and two outputs provide 5V @ 250mA, from an LDO, and a regulated 24V @ 700mA, 2.5A peak for 30milliseconds.
  • Flyback, Linear Regulator for Medical Pack (-5V @ 10mA) - PMP2187.6 - TI Tool Folder
    PMP2187: This design provides isolated 5V (x2), 3.3V, 2.5V and -5V outputs. All outputs are noise filtered using Low Drop Out (LDO) linear regulators for noise sensitive applications such as medical imaging and data acquisition.
  • 335W Single Stage LLC-SRC Converter Reference Design
    PMP10375.2: The PMP10375 reference design is a single stage LLC series resonant converter (SRC), producing up to a 335W output using UCC25600 resonant controller. With the use of single stage LLC-SRC, the converter efficiency goes up to 90% at 335W full output power with 120VAC input.
  • PMP11371 5.5V/11A Out Synchronous Flyback, Universal AC Input Reference Design | TI.com
    PMP11371: The PMP11371 power reference design provides up to 60W at 5.5V from a universal AC input range of 85-265VAC. The UCC24636 synchronous rectifier driver allows this design to provide 88% average efficiency in a compact form factor.
  • PMP5666 18V to 60Vin to +/-12V, 13W | TI.com
    PMP5666: The PMP5666 is a two outputs, +/-12V (+800mA and -250mA), isolated flyback working in continuous conduction mode thus reducing peak currents. The loop is closed to the +12V main output. The input voltage range is 18V…60V.
  • 120VAC Input, 48V/12V 32W Flyback Reference Design
    PMP9727.1: The PMP9727 reference design uses the UCC28740 flyback controller to generate both a 12V/1A and 48V/0.4A outputs from a 120V AC input. The valley switching of the UCC28740 allows this low-cost design to provide an efficiency of over 89%; no load losses are less than 80mW.
  • PMP8586 Isolated Non-synchronous Flyback Converts Universal Vin to 18V@550mA Reference Design | TI.com
    PMP8586: The LM5021-2 is an off-line controller that can work in CCM and DCM. A pulse skip mode improves the efficiency of this isolated flyback, and flattens the curve at most loads. It is also suitable for power line communication PSU.
  • Low Vin, Small Form Factor Flyback Reference Design for High Voltage Laser Flash Drive
    PMP10712: PMP10712 is a 1.2W, small form factor, isolated flyback design that supports very low Vin of 3.3V-6V and is capable of delivering 10mA at 120V output. The design uses LM3481 Boost controller IC which works on current mode operation and can be synchronized to any frequency between 100KHz to 1 MHz. This design was built on a 2 layer board and is a simple, low-BOM-count, and low-cost design providing an isolated output.
  • AC Input, 6 Channel LED Strings with 30W Output Reference Design
    PMP4484.9: The PMP4484 is a power reference design with AC input. It is a isolated LED driver, provides 6 channel LED outputs with PWM dimming. It implements a high PF flyback controller UCC28810 to output DC 40V, the Constant Current Buck LED Driver LM3414HV downs the voltage to 30V to drive LED. The degisn also provides 3.3Vo to MCU by the buck conller LMR16006, and a 10Vo to RS485. The system achieves high efficiency and high PF.
  • Non-Standard (>25.5W) PoE - High Efficiency Forward Converter (12V@5A) Reference Design
    PMP7499: This converter provides a high power PoE output of 12V/5A. The TPS2379 PD controller allows the use of an external hot swap FET for increased efficiency. The UCC2897A PWM controller is used to implement a high efficiency active clamp forward converter.
  • UPOE High-Efficiency Flyback Converter (12V/3.8A) Reference Design for PoE PD Applications
    TIDA-00741: TIDA-00741 uses two TPS2378 PD controllers for a forced 4-pair UPOE solution to 51W non-standard PoE PD applications. It incorportates the UCC2897A controller in a high-efficiency, great transient response (driven) synch flyback converter capble of 12V at 3.8A.
  • Universal AC Input, 10.5V/1.8A DC Output, Isolated Synchronous Flyback Converter Reference Design
    PMP10164: The PMP10164 reference design supplies 10.5V@1.8A from universal AC mains; the isolated Flyback topology is the most used for low power range due to single magnetic component. Since the load is a power line communication chip, a fixed frequency modulation has been chosen. The controller LM5021 performs also pulse skip mode thus improving efficiency at light load. A synchronous rectification controller UCC24630 has been employed to increase the efficiency and the thermal performance.
  • AC Input, 5V/3.3V2A Cascaded Power Supply Reference Design
    PMP4472.1: The PMP4472 is a power reference design with a high AC input, 5Vout, followed by a DC isolated output of 3.3V at 2A. It implements a high efficiency controller UCC28740 to provide 5V bus voltage and a step-Down Converter TPS54228.The design achieves good line and load regulation as well as good dynamic response and low output ripple voltage.
  • Universal Line to 28.5V@800mA Isolated Flyback Power Supply with Transient Peak Power Capability
    PMP7167: The PMP7167 is an isolated quasi resonant flyback using the UCC28610. Low standby current and fast startup time are the advantages of the cascode architecture. PMP7167 was built on the PMP5643 Rev_B PWB.
  • PMP9727 120VAC Input, 48V/12V 32W Flyback Reference Design | TI.com
  • PMP11329 Universal Line to 13 Volts at 4.6 Amps Power Supply Reference Design | TI.com
    PMP11329: Universal line to 13 volt at 60 watts power supply. This is a synchronous fly back operating in continuous conduction mode using TI's synchronous rectifier controller on the secondary.
  • PMP10110 Universal AC Input to 30Vmax@6A Lead-acid Battery Charger Reference Design with PFC | TI.com
    PMP10110: The PMP10110 design converts the universal input AC voltage to isolated 17V...30V@6A and is suitable to charge lead-acid or Li-Ion batteries. The converter is a constant-V and constant-I genarator and the set points for output voltage (charge level) and current are settable by means of two PWM signals. The first stage is a PFC boost while the isolation ad current stabilization is performed by DC-DC half bridge stage. An isolated quasi-resonant flyback converter supplies all internal voltages and provide some extra current for external loads (fan or analog section), in details 12V@400mA and 5V@300mA.
  • Universal AC Input to 30Vmax@6A Lead-acid Battery Charger Reference Design with PFC
    PMP10110.3: The PMP10110 design converts the universal input AC voltage to isolated 17V...30V@6A and is suitable to charge lead-acid or Li-Ion batteries. The converter is a constant-V and constant-I genarator and the set points for output voltage (charge level) and current are settable by means of two PWM signals. The first stage is a PFC boost while the isolation ad current stabilization is performed by DC-DC half bridge stage. An isolated quasi-resonant flyback converter supplies all internal voltages and provide some extra current for external loads (fan or analog section), in details 12V@400mA and 5V@300mA.
  • 300-W PFC plus Resonant LLC Half-Bridge controller off-line AC/DC PSU Module
    TIDA-00520: This is a high efficiency 300-W AC/DC reference design. The design can be biased from external supply or configured for Self-Bias Auxillary mode for operation directly off the AC mains. The PFC is fully internally compensated, reducing design complexity and pcb design. Protections include 3-level OCP, line brown-out, PFC Bulk OVP plus UVP and OTP.
  • 220V-400VDC Input, 5V/100W Active Clamp Forward
    PMP7413: This reference design generates an isolated 5V/100W output from a high voltage DC input. This design is intended to operate from the output of a PFC front end regulator. The UCC2897A is used to control an active clamp forward converter. Self-driven synchronous rectifiers allow for 91% efficiency. An accurate current limit is provided by directly sensing the output current. A clock pulse output is also provided for synchronizing with other converters.
  • 220V-400VDC Input, 12V/100W Active Clamp Forward
    PMP6961: This reference design generates an isolated 12V/100W output from a high voltage DC input. This design is intended to operate from the output of a PFC front end regulator. The UCC2897A is used to control an active clamp forward converter. Self-driven synchronous rectifiers allow for over 91% efficiency. An accurate current limit is provided by directly sensing the output current. A clock pulse output is also provided for synchronizing with other converters.
  • 380VDC Input, 24V/170W Active Clamp Forward
    PMP7391: This reference design uses the UCC2894 to control an active clamp forward converter that generates an isolated 24V at 7A from a 380VDC input. This supply is intended to be used with a PFC boost front-end and requires an external 12V bias voltage for house-keeping on the primary side. This supply is over 91% efficient at full load.
  • PMP7413 220V-400VDC Input, 5V/100W Active Clamp Forward | TI.com
    PMP7413: This reference design generates an isolated 5V/100W output from a high voltage DC input. This design is intended to operate from the output of a PFC front end regulator. The UCC2897A is used to control an active clamp forward converter. Self-driven synchronous rectifiers allow for 91% efficiency. An accurate current limit is provided by directly sensing the output current. A clock pulse output is also provided for synchronizing with other converters.
  • Flyback, Linear Regulator for Medical Pack (4V @ 250mA)
    PMP2187.7: This design provides isolated 5V (x2), 3.3V, 2.5V and -5V outputs. All outputs are noise filtered using Low Drop Out (LDO) linear regulators for noise sensitive applications such as medical imaging and data acquisition.
  • 40V-60V Input 12V/5A 95% Efficient Active Clamp Forward
    PMP3026: The PMP3026 reference design provides 12V at 5A (60W) from a 40V-60Vdc telecom input with up to 95% efficiency. This design uses the UCC2897A active clamp controller along with synchronous rectifiers to achieve very high efficiency.
  • PMP7019 Quasi Resonant Flyback, 80-440V AC, 12V@0.5A using UCC28600 up to 91% efficiency | TI.com
    PMP7019: The PMP7019 reference design is a wide-input Quasi Resonant Flyback designed for industrial applications. It uses the UCC28600 controller to an isolated 48V/1A output from an 80Vac to 440Vac input range. The quasi-resonant switching of the UCC28600 allows this design to achieve a maximum load efficiency up to 91%.
  • PMP8022 Universal Supply Source - 12VAC / 12VDC to 300mA Boost Converter for MR16 / AR111 (7 LEDs / 21V) Ap | TI.com
    PMP8022: The main purpose of this reference design is to demonstrate a very good compatibility of Power source boost topology LED driver based on TPS92560. This LED driver is designed for converting a power source DC, AC & E-transformer to a regulated LED current. The operating conditions and performance of the reference design are as follows: 12VDC, or 12Vac / 50Hz 60Hz, or 12VAC E-transformer, Output Power 6W, 21V LED voltage , 300mA Regulated LED Current , 85% Typical System Efficiency, High Power Factor > 0.9, Output Short-Circuit and output Open-Circuit Protection.
  • PMP7499 Non-Standard (>25.5W) PoE - High Efficiency Forward Converter (12V@5A) Reference Design | TI.com
    PMP7499: This converter provides a high power PoE output of 12V/5A. The TPS2379 PD controller allows the use of an external hot swap FET for increased efficiency. The UCC2897A PWM controller is used to implement a high efficiency active clamp forward converter.
  • Flyback, Linear Regulator for Medical Pack (5.75V @ 10mA) - PMP2187.8 - TI Tool Folder
    PMP2187: This design provides isolated 5V (x2), 3.3V, 2.5V and -5V outputs. All outputs are noise filtered using Low Drop Out (LDO) linear regulators for noise sensitive applications such as medical imaging and data acquisition.
  • Quasi Resonant Flyback, 80-440V AC, 48V@1A using UCC28600 up to 91% efficiency
    PMP7019.1: The PMP7019 reference design is a wide-input Quasi Resonant Flyback designed for industrial applications. It uses the UCC28600 controller to an isolated 48V/1A output from an 80Vac to 440Vac input range. The quasi-resonant switching of the UCC28600 allows this design to achieve a maximum load efficiency up to 91%.
  • 120VAC Input, 48V/12V 32W Flyback Reference Design
    PMP9727.2: The PMP9727 reference design uses the UCC28740 flyback controller to generate both a 12V/1A and 48V/0.4A outputs from a 120V AC input. The valley switching of the UCC28740 allows this low-cost design to provide an efficiency of over 89%; no load losses are less than 80mW.
  • Flyback, Linear Regulator for Medical Pack (2.5 @ 2mA)
    PMP2187.5: This design provides isolated 5V (x2), 3.3V, 2.5V and -5V outputs. All outputs are noise filtered using Low Drop Out (LDO) linear regulators for noise sensitive applications such as medical imaging and data acquisition.
  • TPS92560 High Power 20W Boost LED Driver Reference Design
    PMP8020: The main purpose of this reference design is to demonstrate a very good compatibility of Power source boost topology LED driver based on TPS92560. This LED driver is designed for converting a power source DC, AC & E-transformer to a regulated LED current. The operating conditions and performance of the reference design are as follows: 12VDC, or 12Vac / 50Hz 60Hz, or 12VAC E-transformer, Output Power 20W, 30-40V LED voltage , 500mA Regulated LED Current , 86% Typical System Efficiency, High Power Factor > 0.9, and output Open-Circuit Protection.

Frequently Asked Questions (FAQ)

  • Q: Where can I find a circuit for the TL431 Shunt Regulator switch?

    A: One simple way to protect circuits from over voltage is the use of a Shunt Regulator IC TL431 to switch off the load if the voltage increases above the preset level. In unregulated power supply, if the voltage in the primary of the step down transformer increases, a corresponding increase in voltage will appears in the secondary also. This may seriously affect the circuit, if it uses voltage sensitive semiconductors.TL431 is an adjustable precision Zener shut regulator and its output voltage can be set between 2.5 volts to 36 volts using a voltage divider. It can functions like a Zener diode but with precision. more

  • Q: Where can I find TL431 application notes?

    A: 2% Accuracy Adjustable Precision Shunt Regulator more

  • Q: How can I calculate the values for TL431 shunt regulator?

    A: TL431 Calculator more

  • Q: Where can I find a TL431 pinout diagram?

    A: The TL431 and TL432 devices are three-terminal adjustable shunt regulators, with specified thermal stability over applicable automotive, commercial, and military temperature ranges. The output voltage can be set to any value between Vref (approximately 2.5 V) and 36 V, with two external resistors (see ). These devices have a typical output impedance of 0.2 Ω. Active output circuitry provides a very sharp turn-on characteristic, making these devices excellent replacements for Zener diodes in many applications, such as onboard regulation, adjustable power supplies, and switching power supplies. The TL432 device has exactly the same functionality and electrical specifications as the TL431 device, but has different pinouts for the DBV, DBZ, and PK packages. more

  • Q: Where can I find a TL431 voltage regulator circuit?

    A: The TL431 is a reference voltage source that is commonly used in the control circuit of isolated power supplies. Typically used to provide a precision reference voltage, the TL431 can also be configured as an analog controller by exploiting its on-board error amplifier. In this example, the design of a TL431-based type 2 voltage controller for a flyback converter is presented. The voltage control circuit regulates the output voltage of the 5 V winding and includes an optocoupler to maintain isolation between the input and output stages. The example circuit is shown below. more

  • Q: How do I use a TL431 shunt regulator?

    A: This is the Shunt Regulator circuitwith TL431 Voltage Reference – Shunt Voltage Reference IC. They is easy to used,comprises one IC, three resistors, four capacitors.if you like to use zener diode for the voltage reference,it very cheap but low quality than the IC. In circuit the output is 5volt 15mA, if you other voltage can change R2,R2. The C1,C2,C3 use for filter the volt,low noise ripple. more

  • Q: Where can I download a TL431 Spice model?

    A: TL431 is commonly used to create a voltage reference or small linear shunt regulator. It is often considered to be a “programmable zener”. Though, there is a big difference betweenTL431 and a zener diode. As many of other feedback systems, TL431 can oscillate if inappropriately decoupled. more

  • Q: How do I use the TL431 as an LDO regulator?

    A: Given the vast number of application notes, design guides and other material concerning low dropout (LDO) regulators, anyone would think they were complex. Despite initial appearances, they actually are complex. There are many things that must be considered to ensure stability, and not the least of these is due to the use of a PNP series pass transistor or a P-Channel MOSFET, which means the output is from the collector or drain, and not the emitter or source as with most conventional regulators. more

  • Q: How do I use the TL431 for low voltage cutoff?

    A: The cutoff point is set by the ratio of R2 and R3. 6V is appropriate for a 7 cell Nicad or 2 cell Li-ion pack, 7.2V for an 8 cell Nicad, and 9V for a 3 cell Li-ion battery. Resistors R2 and R3 should be 1% tolerance for accuracy. Alternatively, a variable resistor could be used to adjust the cutoff voltage. more

  • Q: Where can I find a circuit diagram for TL431 overvoltage protection?

    A: The TL431 device has three terminals and main application of this device is adjustable shunt regulation. The reference regulating voltage can be given through cathode and reference pin. Here the VR1 variable resistor decides the regulation range, by changing it we can get different range of regulating voltage. more

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