The TPSM843B22 module is a synchronous buck power module designed to provide up to a 20-A output. The input (VIN) is rated for 4 V to 18 V. Table 1-1 provides the rated input voltage and output current range for the evaluation module.

The high-side and low-side MOSFETs are incorporated inside the TPSM843B22 package along with the gate-drive circuitry, inductor and basic passives. The low drain-to-source on-resistance of the MOSFET allows the TPSM843B22 to achieve high efficiencies and helps keep the junction temperature low at the rated output current. Fixed frequency advanced current mode control allows you to synchronize the module to an external clock source. An external divider allows for an adjustable output voltage. The TPSM843B22 FSEL and MSEL pins provide selectable switching frequency, soft-start time, current limit, and internal compensation. Lastly, the TPSM843B22 includes an enable pin and a power-good output, which can be used for sequencing multiple modules.