User`s guide

User's Guide
SLVU693B–March 2012–Revised May 2012
TLV62090EVM-125 Evaluation Module
This user’s guide describes the TLV62090 evaluation module (EVM) and how to perform a stand-alone
evaluation or interface with a host or a system. The TLV62090 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 theTLV62090 ........................................................................ 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 Layout, and Bill of Materials ....................................................... 7
5.1 Schematic ........................................................................................................... 7
5.2 Printed-Circuit Board Layouts .................................................................................... 8
5.3 Bill of Materials ..................................................................................................... 9
List of Figures
1 EVM Schematic and Evaluation Setup................................................................................... 3
2 Typical Switching Waveforms ............................................................................................. 4
3 Low-Power Mode, 25-Ω Load – Shows Burst Low-Power Mode .................................................... 4
4 Power Up by Powering Laboratory Supply Connected to Vin ........................................................ 5
5 Power Up by Hot Plugging Vin............................................................................................ 5
6 Power Up by Enable Pin Pulled High .................................................................................... 6
7 Power Down by Enable Pulled Low ...................................................................................... 6
8 Assembly Layer ............................................................................................................. 8
9 Top Layer ................................................................................................................... 8
10 Bottom Layer ................................................................................................................ 9
List of Tables
1 Setup I/O Connections and Configuration for TLV62090EVM ....................................................... 2
2 PWR125A Bill of Materials................................................................................................. 9
DCS Control is a trademark of Texas Instruments.
1
SLVU693B–March 2012–Revised May 2012 TLV62090EVM-125 Evaluation Module
Submit Documentation Feedback
Copyright © 2012, Texas Instruments Incorporated