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1 Introduction
1.1 Background
User's Guide
SLVU243 – May 2008
TPS5430EVM-342 2.25-A, Inverting Buck-Boost Regulator
Evaluation Module
Contents
1 Introduction ................................................................................................................... 1
2 Test Setup and Results ..................................................................................................... 3
3 Board Layout ................................................................................................................. 9
4 Schematic and Bill of Materials ........................................................................................... 11
List of Figures
1 Measured Efficiency, TPS5430 ............................................................................................ 4
2 Load Regulation .............................................................................................................. 5
3 Load Transient Response, TPS5430 ..................................................................................... 6
4 Measured Loop Response, TPS5430, V
IN
= 12 V ....................................................................... 7
5 Measured Output Voltage Ripple, TPS5430 ............................................................................. 8
6 Power Up, V
OUT
Relative to V
IN
........................................................................................... 9
7 Top-side Layout ............................................................................................................ 10
8 Bottom-side Layout (View from Top Side) .............................................................................. 10
9 Top-side Assembly ......................................................................................................... 11
10 TPS5430EVM-342 Schematic ............................................................................................ 11
List of Tables
1 Input Voltage and Output Current Summary ............................................................................. 2
2 TPS5430EVM-342 Performance Specification Summary .............................................................. 2
3 Output Voltages Available .................................................................................................. 3
4 EVM Connectors and Test Points ......................................................................................... 3
5 TPS5430EVM-342 Bill of Materials ...................................................................................... 12
This guide contains TPS5430 background information and TPS5430EVM-342 evaluation module (EVM)
support documentation. Also the performance specifications, a schematic diagram, and the bill of
materials for the TPS5430EVM-342 are included.
The TPS5430 dc/dc converter is designed to provide up to a 3.0 A output from an input voltage source of
5.5 V to 36 V. Table 1 provides the rated input voltage and output current range for the evaluation module.
This EVM is designed to demonstrate using the TPS5430 regulator in an inverting buck-boost application
and does not reflect the entire design range of input and output voltages that can be used with this part.
The switching frequency is internally set at a nominal 500k Hz. The high-side MOSFET is incorporated
PowerPAD is a trademark of Texas Instruments.
SLVU243 – May 2008 TPS5430EVM-342 2.25-A, Inverting Buck-Boost Regulator Evaluation Module 1
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