1 Introduction

The TPS7H4001-SP is a radiation-hardness-assured, 7-V, 18-A synchronous buck converter. Operation of the device is demonstrated on the TPS7H4001EVM-CVAL Evaluation Module User's Guide, which contains a single buck converter capable of supplying 18-A of load current. A key feature of the TPS7H4001-SP is that it supports parallel operation easily allowing four buck converters to operate in quadrature phase and deliver up to 72-A of load current to a tightly regulated line. Parallel operation is demonstrated on the TPS7H4001QEVM-CVAL Evaluation Module User's Guide.

As different applications call for unique load current requirements even within a single system, users may want to evaluate these different applications with the same hardware, avoiding multiple hardware purchases. This document provides instructions on how to do just that; specifically, listing the modifications required on the 4-Channel EVM in order to realize a 3-channel design. Note, this application report is part of a series of reports showing how to convert 4-channel to 1-channel, 4-channel to 2-channel, and 4-channel to 3-channel designs. Please refer to other documents if 1-channel or 2-channel designs are desired.

Figure 1. TPS7H4001QEVM-CVAL