A good PCB layout for the TPS40304DRCR involves placing the input capacitors close to the VIN pin, using a solid ground plane, and keeping the high-current paths short and wide. TI provides a recommended layout in the datasheet and application notes.
Choose input capacitors with low ESR and high ripple current rating. For output capacitors, choose ones with low ESR and high capacitance. The datasheet provides guidelines for capacitor selection, and TI's capacitor selection tool can also be used.
The TPS40304DRCR has an operating junction temperature range of -40°C to 150°C, but the maximum ambient temperature range depends on the specific application and thermal design. Typically, it's recommended to keep the ambient temperature below 85°C.
The TPS40304DRCR has a built-in overcurrent protection feature. To implement it, connect a sense resistor in series with the output, and connect the sense pin to the resistor. The device will limit the output current to the programmed value.
Yes, the TPS40304DRCR is qualified for automotive and high-reliability applications. It meets the requirements of the AEC-Q100 standard, and TI provides a detailed report on its reliability and qualification.
TPS40304DRCR datasheet
by Texas Instruments
