Datasheet

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1 INTRODUCTION
This document presents the information required to operate the TPS5403 as well as the support
documentation including schematic and bill of materials.
2 BACKGROUND
The TPS5403 is designed to provide 1.7-A continuous current with an operational range of 4.5 V to 28 V
and an external set switching frequency ranging from 50 kHz to 1.1 MHz.
As there are many possible options to set the converters, Table 1 presents the performance specification
summary for the EVM.
Table 1. Summary of Performance
TEST CONDITIONS PERFORMANCE
V
IN
= 4.5 V to 28 V
f
SW
= 300 kHz Buck: 3.3 V, up to 1.7 A
(25°C ambient)
The evaluation module is designed to provide access to the features of the TPS5403. Some modifications
can be made to this module to test performance at different input and output voltages, current and
switching frequency. Please contact TI Field Applications Group for advice on these matters.
2
TPS5403EVM User’s Guide SLVU780–September 2012
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