Part Details for REF3425 by ANALOGY
Overview of REF3425 by ANALOGY
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Part Details for REF3425
REF3425 CAD Models
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Reference Designs related to REF3425
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Non-isolated power architecture with diagnostics reference design for protection relay modules
This reference design showcases non-isolated power supply architectures for protection relays with analog input/output and communication modules generated from 5-: 12-: or 24-V DC input. To generate the power supplies the design uses DC/DC converters with an integrated FET: a power module with an integrated inductor for size- and design-time-constrained applications: a HotRod™ package type for applications requiring low EMI and linear regulators (LDOs) for low ripple. Protections include a flat clamp TVS for input transient protection: an eFuse with configurable load current for overload protection and an ideal diode controller for input reversal protection. Additional features include an auto-switching power MUX: an analog temperature sensor: an input OK indication: a “no load” detection and a voltage supervisor.
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Isolated power architecture reference design for communication and analog input/output modules
This reference design provides a means to isolate I2C or SPI communication lines. This is often required in grid infrastructure applications such as protection relays and circuit breakers where high voltages are involved. This reference design provides both power isolation and signal isolation.
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High Accuracy Analog Front End Using 16-Bit SAR ADC with ±10V Measurement Range Reference Design
The TIDA-00834 reference design accurately measures voltage and current inputs using simultaneously sampled: 16-bit: ±10 V: bipolar input SAR ADC critical to identify power systems malfunction and power quality related failures accurately and quickly. This results in reduced power systems downtime. The AFE includes signal conditioning based on precision instrumentation or precision amplifier for current measurement upto 125A and opamp based signal conditioning circuit for voltage measurement upto 300V. The gain amplifier for voltage and current inputs are used to scale the sensor output to the ADC range. Coherent sampling of the analog input signals is implemented using comparator and FPGA. The power supply for data acquisition front end is generated using a +5V input.
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High-efficiency: low-emission: isolated DC/DC converter-based analog input module reference design
This reference design is a simplified architecture for generating an isolated power supply for isolated amplifiers for measuring isolated voltages and currents. A fully integrated DC/DC converter with reinforced isolation operating from a 5-V input with configurable 5-V or 5.4-V output (headroom for low dropout regulator (LDO)) generates the isolated power. Shunts that are interfaced to ±50-mV input range isolation amplifiers configured as channel isolated inputs measure the current. Potential divider output interfaced to ±250-mV or ±12-V input range isolation amplifiers configured as group isolated inputs measure the voltage. The outputs of the isolation amplifiers interface directly to 24-bit delta sigma analog-to-digital converter (ADC) or are scaled to ±10 V using gain amplifiers and interfaced to 16-bit SAR ADC for performance evaluation. On-board digital diagnostics improves reliability and enhances system performance.
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High Accuracy ±0.5% Current and Isolated Voltage Measurement Ref Design Using 24-Bit Delta-Sigma ADC
The TIDA-00835 reference design allows for accurate voltage and current measurement using a bipolar input configuration by incorporating a four- channel: 24-bit simultaneously-sampling differential input Delta-Sigma ADC over wide dynamic range. The ADC is configured to measure ±2.5 V bipolar input. The inputs are scaled to ADC measurement range of ±2.5V using a fixed gain amplifier. This AFE chains two ADCs together using a common external clock to expand the number of input channels to eight while simultaneously sampling all of the input channels. By having more measurement channels per module: overall system cost is reduced.
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ADC-based: digitally-isolated: wide-input: 16-channel: AC/DC binary input reference design
This reference design showcases a cost-optimized and scalable ADC-based AC/DC binary input module (BIM) architecture with reinforced isolation. The 16 channels of a 10- or 12-bit SAR ADC are used for sensing multiple binary inputs. The op amps: in addition to keeping the cost per-channel low: provide optimal signal conditioning for each input. A digital isolator (basic or reinforced) is used to isolate the host MCU or processor. A provision is available to measure temperature: humidity: and magnetic field for diagnostics. A reinforced isolation DC/DC power supply with configurable output provides the required supply for the binary module.
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HART-enabled PLC analog input module reference design
This reference design is a single-channel: 4-mA to 20-mA analog input module that supports the highway addressable remote transducer (HART) communication protocol: enabling bidirectional digital communication between field transmitters and programmable logic controllers (PLCs). The loop current: representing the primary variable: flows through a current-sense resistor producing a proportional voltage that is digitized by a precision delta-sigma analog-to-digital converter (ADC) (ADS1260). A DAC8740H modem is used in this design to implement HART communication across the current loop. The ADS1260 and DAC8740H are interfaced with an external microcontroller that controls the ADS1260 sampling and includes a HART software stack to support the HART protocol. This design also features digital isolation: a wide power-supply range: and a high-precision external voltage reference for the ADC.
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24-port (PoE 2: 2-pair) power sourcing equipment reference design for multi-port applications;
This reference design showcases a Type-3: 30W: 2-Pair 24-port Ethernet switch for Power over Ethernet (PoE) applications which can send up to 30W per port for IEEE 802.3bt Type 3 applications and up to 60W per port for non-standard applications. Based on the MSP430F523x family: TI's TPS2388x FirmPSE system firmware provides a total system level solution for multi-port applications which reduces time to market and frees-up valuable software resources. This design supports port power management with priority: multiple power supplies: legacy PD detection: field upgradability: UART/I2C communication with the host: and more. TI’s FirmPSE system firmware GUI for this design enables the customization of production level PSE system firmware code with just a few clicks of a button and provides real-time communication to the system. In addition: two of these designs may be cascaded through the edge connectors in order to support up to 48-port PSE systems.The full PoE Evaluation ecosystem includes the following (optional companion tools also listed): 24 Port PoE PSE Evaluation SystemPSEMTHR24EVM-081: Mother board for 24 Port PoE PSE applications (sold separately)TPS23881EVM-083: TPS23881 daughter card for 24 port Type 3/Type 4 4-Pair (90W) PoE PSE applications (sold separately)TPS23882EVM-084: TPS23882 daughter card for 24 port Type 3 2-Pair (30W) PoE PSE applications (sold separately)PSEMCUDAUEVM-082: MSP430 daughter card for 24 Port PoE PSE applications (sold separately)MSP-FET: Used with PSE system firmware GUI to flash code into MSP430 device (sold separately)USB2ANY Interface Adapter: Used with PSE system software GUI for I2C/UART Interaction with PSEMCUDAU-082 daughter card (sold separately)PSE system software code imageTPS2373 Evaluation Module for IEEE 802.3bt PoE PD ApplicationsTPS2372-4EVM Evaluation Module for IEEE 802.3bt PoE PD ApplicationsTPS2372-3 IEEE 802.3bt Type 3 PoE PD Evaluation Module for Lighting
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24-port (PoE 2: 4-pair) power sourcing equipment reference design for multi-port applications
This reference design showcases a Type-4 (PoE 2: 4-Pair) 24-port Ethernet switch for Power over Ethernet (PoE) applications which can send up to 90W per port for for IEEE 802.3bt (PoE 2) applications and up to 120W per port for non-standard applications. Based on the MSP430F523x family: our FirmPSE system software for this design reduces time to market and frees-up valuable software resources by enabling real-time communication with the system and customization of firmware. This design supports power management with priority: multiple power supplies: legacy PD detection: field upgradability: UART/I2C communication with the host: and more. In addition: two of these designs may be cascaded through the edge connectors in order to support up to 48-port PSE systems.List of Required HardwarePSEMTHR24EVM-081: Mother board for 24-port IEEE 802.3bt (PoE 2) ready PSE systemTPS23881EVM-083: IEEE 802.3bt (PoE 2) ready PSE daughter card for 24-port PSE systemPSEMCUDAUEVM-082: MSP430 daughter card for 24-port IEEE 802.3bt (PoE 2) ready PSE systemMSP-FET: Flash tool for flashing FirmPSE app code and BSL code to MSP430USB2ANY: Interface adapter to communicate between FirmPSE GUI and MSP430List of Software to DownloadFirmPSE APP code: PSE system firmware application codeFirmPSE BSL code: PSE system firmware boot strap loader codeFirmPSE GUI: TI’s TPS2388x FirmPSE System Software Ecosystem GUIStep-by-step to getting started: Step 1: Order hardware Step 2: Download the software Download the FirmPSE application code image: FirmPSE BSL code image and FirmPSE GUI here.Step 3: Watch hardware setup and GUI tutorial videos Step 4: Download and review the user guides24-Port (4 Pair) Power Sourcing Equipment Reference Design for Multi-port ApplicationsFirmPSE host interfaceStep 5: Review the additional design tools listed belowHardware design filesSchematics and block diagramsTest dataDesign files (see below)CAD/CAE symbols (see below)How to Load TPS2388x SRAM and Parity Code Over I2CGet more out of your power supply with port power managementChallenges and solutions for PoE systems in Ethernet switchesSupport and training E2E LinkRelated TI devicesTPS23881TPS23882MSP430F5234LM5020TLV431INA240REF3425LM5050-2TPS7A4001TPS3890
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