This high-efficiency: high-power reference design uses the LM5119 two-phase synchronous-buck controller to regulate 14.4V at 60A. This design can be used to supply single car battery power from a double battery system: often found in trucks. Features include input EMI filtering: output hot swap protection: input/output current monitoring and temperature monitoring.
This reference design is a 650-W inverter power stage designed for low-frequency (transformer-based): single-phase UPS operating from a 12-V battery. The design enables low form factor and high-efficiency implementation: taking advantage of the TI SMD MOSFET in a SON5x6 package with very low RDS(on) and low gate charge (Qg). Using two devices in parallel for each leg of the full-bridge power stage: the power stage eliminates the need of a heat sink: which reduces overall system cost.
This design is a non-synchronous buck converter which operates at 5.0V input voltage and provides 1.3V @ 600mA. For comparisson of the size of the passive components and the performance, one converter is running at 1.6 MHz, the other one at 3.0 MHz.
This reference design demonstrates high-side primary current sensing in DC/DC converter and onboard charger (OBC) applications for hybrid and electric vehicles. Using an isolated shunt approach for current sensing has several advantages: including high accuracy: linearity and robustness. However: the large input range of isolated amplifiers causes the shunt to experience high power dissipation. To solve this problem: this reference design utilizes a lower input range isolated amplifier: reducing power dissipation while maintaining the advantages of the shunt-based approach.