TPS5450EVM-254: 5V @ 5A, 10 ~ 31 Vin

This user's guide contains background information for the TPS5450 as well as support documentation for the TPS5450EVM-254 evaluation module (HPA254). Also included are the performance specifications, the schematic, and the bill of materials for the TPS5450EVM-254.

The TPS5450 dc/dc converter is designed to provide up to a 5-A output from an input voltage source of 5.5 V to 36 V. Rated input voltage and output current range for the evaluation module is given in Table 1.

This evaluation module is designed to demonstrate a typical printed-circuit-board application using the TPS5450 regulator and does not reflect the full range of possible input and output voltages that may be used when designing with this part. The switching frequency is internally set at a nominal 500 kHz. The high-side MOSFET is incorporated inside the TPS5450 package along with the gate drive circuitry. The low drain-to-source on resistance of the MOSFET allows the TPS5450 to achieve high efficiencies and helps to keep the junction temperature low at high output currents.

The compensation components are provided internal to the integrated circuit (IC), whereas an external divider allows for an adjustable output voltage. Additionally, the TPS5450 provides an enable input. The absolute maximum input voltage for the TPS5450 is 40 V.