TPS54A20EVM-770: 1.2V @ 10A, 9.2 ~ 14 Vin

This user’s guide contains information for the TPS54A20EVM-770 evaluation module (PWR770) as well as for the TPS54A20 dc/dc converter. Also included are the performance specifications, the schematic, and the bill of materials for the TPS54A20EVM-770.

The TPS54A20 dc/dc converter is a two-phase synchronous series capacitor buck converter designed to provide up to a 10-A output. The input (VIN) is rated for 8 V to 14 V. Rated input voltage and output current range for the evaluation module are given in Table 1.

This evaluation module is designed to demonstrate the small printed-circuit-board areas that may be achieved when designing with the TPS54A20 regulator. The switching frequency is externally set at a nominal 2 MHz for each side, 4 MHz effective. The high-side and low-side MOSFETs are incorporated inside the TPS54A20 package along with the gate drive circuitry. The low drain-to-source on-resistance of the MOSFET allows the TPS54A20 to achieve high efficiencies and helps keep the junction temperature low at high output currents. The compensation components are internal to the integrated circuit (IC), and an external divider allows for an adjustable output voltage. Additionally, the TPS54A20 provides adjustable slow start and undervoltage lockout inputs. The absolute maximum input voltage is 15 V while switching and 17 V for non-switching conditions.