This user's guide contains background information for the TPS54233 as well as support documentation for the TPS54233EVM-373 evaluation module (HPA373). Also included are the performance specifications, the schematic, and the bill of materials for the TPS54233EVM-373.

The TPS54233 dc/dc converter is designed to provide up to a 2 A output from an input voltage source of 3.5 V to 28 V. Rated input voltage and output current range for the evaluation module are given in Table 1-1. This evaluation module is designed to demonstrate the small printed-circuit-board areas that may be achieved when designing with the TPS54233 regulator. The switching frequency is internally set at a nominal 300 kHz. The high-side MOSFET is incorporated inside the TPS54233 package along with the gate drive circuitry. The low drain-to-source on resistance of the MOSFET allows the TPS54233 to achieve high efficiencies and helps keep the junction temperature low at high output currents. The compensation components are external to the integrated circuit (IC), and an external divider allows for an adjustable output voltage. Additionally, the TPS54233 provides adjustable slow start and undervoltage lockout inputs. The absolute maximum input voltage is 30 V for the TPS54233EVM-373.

A summary of the TPS54233EVM-373 performance specifications is provided in Table 1-2. Specifications are given for an input voltage of V_IN = 15 V and an output voltage of 3.3 V, unless otherwise specified. The TPS54233EVM-373 is designed and tested for V_IN = 7 V to 28 V. The ambient temperature is 25°C for all measurements, unless otherwise noted.