User's Guide

SLVU670A – March 2012 – Revised May 2012

TPS62090EVM-063 Evaluation Module

This user’s guide describes the TPS62090 evaluation module (EVM) and how to perform a stand-alone

evaluation or interface with a host or system. The TPS62090 is a step-down converter that operates with

an input voltage between 2.5 V and 6 Vdc, an output voltage of 1.8 V using external resistors, and can

deliver up to 3000 mA of continuous current. The converter has a programmable soft-start, a power-out

good status, and several other safety features. See the data sheet for the complete description.

Contents

1

Introduction

.................................................................................................................. 2

2

Considerations When Evaluating the TPS62090

....................................................................... 2

3

Test Summary

............................................................................................................... 2

3.1

Equipment

........................................................................................................... 2

3.2

Equipment and EVM Setup

....................................................................................... 2

3.3

Test Procedure

..................................................................................................... 3

4

Waveforms

................................................................................................................... 4

5

Schematic, Printed-Circuit Board, and Bill of Materials

................................................................ 8

5.1

Schematic

........................................................................................................... 8

5.2

Printed-Circuit Board Layouts

.................................................................................... 9

5.3

Bill of Materials

.................................................................................................... 10

List of Figures

1

EVM Schematic and Evaluation Setup

................................................................................... 3

2

Typical Switching Waveforms

............................................................................................. 4

3

Typical Switching Waveforms

............................................................................................. 5

4

Low-Power Mode, 25-

Ω Load – Shows Burst Low-Power Mode

.................................................... 5

5

Power Up by Powering Laboratory Supply Connected to Vin

........................................................ 6

6

Power Up by Hot Plugging Vin

............................................................................................ 6

7

Power Up by Enable Pin Pulled High

.................................................................................... 7

8

Power Down by Enable Pulled Low

...................................................................................... 7

9

Assembly Layer

............................................................................................................. 9

10

Top Layer

................................................................................................................... 9

11

Bottom Layer

.............................................................................................................. 10

List of Tables

1

Setup I/O Connections and Configuration for TPS62090EVM Evaluation

.......................................... 2

2

PWR063A Bill of Materials

.............................................................................................. 10

1

SLVU670A – March 2012 – Revised May 2012

TPS62090EVM-063 Evaluation Module

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