TPS54561EVM-555: 5V @ 5A, 7 ~ 60V in, Buck

This user's guide contains background information for the TPS54561 as well as support documentation for the TPS54561EVM-555 evaluation module (PWR555). Also included are the performance specifications, the schematic, and the bill of materials for the TPS54561EVM-555.

The TPS54561 DC-DC converter is designed to provide up to a 5-A output from an input voltage source of 4.5 V to 60 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 (PCB) areas that may be achieved when designing with the TPS54561 regulator. The switching frequency is externally set at a nominal 400 kHz. The high-side MOSFET is incorporated inside the TPS54561 package along with the gate-drive circuitry. The compensation components are external to the integrated circuit (IC), and an external resistor divider allows for an adjustable output voltage. Additionally, the TPS54561 provides an adjustable undervoltage lockout with hysteresis through an external resistor divider at the EN pin and adjustable soft-start with an external capacitor at the SS/TR pin. The SS/TR pin can also be used to have the output voltage track an external reference. Lastly, the PWRGD pin is an integrated open drain output power good signal. The absolute maximum input voltage is 60 V for the TPS54561EVM-555.