The TPSM843620 DC/DC converter is a synchronous buck module designed to provide up to a 6-A output. The input (VIN) is rated for 4 V to 18 V. Rated input voltage and output current range for the evaluation module are given in Table 1-1.

The high-side and low-side MOSFETs are incorporated inside the TPSM843620 package along with the gate-drive circuitry, inductor and basic passives which achieves better power density with this integration. The low drain-to-source on-resistance of the MOSFET allows the TPSM843620 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 regulators to an external clock source. An external divider allows for an adjustable output voltage. The TPSM843620 FSEL and MODE pins provide selectable switching frequency, soft start time, current limit, and internal compensation. Lastly, the TPSM843620 includes an enable pin and a power good output which can be used for sequencing multiple regulators.

This evaluation module is designed to demonstrate the small printed-circuit-board areas that can be achieved when designing with the TPSM843620 module. The small area design fits within 115 mm². The design also includes jumpers that can be used to easily evaluate the features of the TPSM843620.