TPS54531 step-down module (ultra-small size, high current)

Chip Description:
The TPS54531 is a 28V, 5A asynchronous buck converter with an integrated high-side MOSFET with low RDS(on). The device automatically activates the pulse-skipping Eco-mode function to improve efficiency under light load. In addition, the 1μA shutdown supply current makes the device suitable for battery-powered applications. Current-mode control with internal slope compensation simplifies external compensation calculations and reduces component count while allowing the use of ceramic output capacitors. Overvoltage transient protection circuitry limits voltage overshoot during startup and transients. Cycle-by-cycle current limiting, frequency foldback, and thermal shutdown features protect the device and load under overload conditions.
Module Pin Description:
The module size is 1.5*1.6cm, and the pin spacing is compatible with perforated boards.
Output Voltage Calculation Formula:
Using the reference circuit:
Import the file “TPS54531 power module_component package model.elibz” to use the module in the project.
Precautions:
(1) The input VIN voltage must be at least 0.7V greater than the output voltage, and the stable output must be greater than 2V.
(2) With the module outputting 5V, the long-term output current is 4A. (For power consumption greater than 10W, please add a heatsink.)
(3) The stamp hole does not need to be processed using the half-hole process; you can handle it yourself.
Ripple test:
Due to the lack of spring pins and limited testing conditions, the actual ripple will be lower than what is observed.
5V no load (11.5mV)
5V2A (25.6mV)
5V3A (37.2mV)
5V4A (45.9mV)
5V5A (50.0mV)
Usage demonstration:
Perforated board:
PCB: