TIDT262 April 2022
The circuit is an automotive four-switch buck-boost converter circuit using the LM5176-Q1 controller IC, so the power supply is able to step up and step down the input voltage.
The circuit accepts an input voltage of 4.5 V to 27 V and provides a regulated output of 12 V that can deliver up to 30 A, depending on cranking level, cranking time, thermal interface, and maximum ambient temperature.
The purpose of this is design is to squeeze a single power stage to maximum output current.