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User's Guide
SLVU292A–April 2010–Revised April 2010
TPS6261x/TPS6262x/TPS6266xEVM
This user’s guide describes the characteristics, operation, and use of the TPS6261x/2x/6xEVM-419
evaluation module (EVM). The TPS626xxEVM-419 is a fully assembled and tested platform for evaluating
the performance of the TPS6261x/2x/6x high-frequency, synchronous, step-down dc-dc converters
optimized for battery-powered portable applications. This document includes schematic diagrams, a
printed circuit board (PCB) layout, bill of materials, and test data. Throughout this document, the
abbreviations EVM, TPS626xxEVM, TPS6261x/2x/6xEVM, and the term evaluation module are
synonymous with the TPS6261x/2x/6xEVM-419 unless otherwise noted.
Contents
1 Introduction .................................................................................................................. 2
1.1 Features ............................................................................................................. 2
1.2 Applications ......................................................................................................... 2
1.3 EVM Ordering Options ............................................................................................ 2
2 TPS6261x/2x/6xEVM Electrical Performance Specifications ......................................................... 3
3 TPS626xxEVM Schematic ................................................................................................. 3
4 Connector and Test Point Descriptions .................................................................................. 4
4.1 Input / Output Connectors: TPS626xxEVM ..................................................................... 4
4.2 Jumpers and Switches ............................................................................................ 4
5 Test Configuration .......................................................................................................... 5
5.1 Hardware Setup .................................................................................................... 5
5.2 Procedure ........................................................................................................... 5
6 TPS626xxEVM Test Data .................................................................................................. 6
6.1 Efficiency ............................................................................................................ 6
6.2 Start-Up ............................................................................................................. 8
6.3 Output Voltage Ripple (Power-Save Mode) .................................................................... 9
6.4 Output Voltage Ripple (PWM) .................................................................................... 9
7 TPS626xxEVM Assembly Drawings and Layout ...................................................................... 10
8 Bill of Materials ............................................................................................................. 13
9 Marking Information ....................................................................................................... 13
List of Figures
1 TPS626xxEVM Schematic................................................................................................. 3
2 Hardware Board Connection .............................................................................................. 5
3 TPS6262xEVM Efficiency versus Load Current (VIN = 2.7 V)........................................................ 6
4 TPS6262x and TPS6262xEVM Efficiency versus Load Current (VIN = 3.6 V)..................................... 6
5 TPS6261xEVM Efficiency versus Load Current (V
OUT
= 1.8 V) ....................................................... 6
6 TPS6261xEVM Efficiency versus Load Current (V
OUT
= 1.2 V) ....................................................... 6
7 TPS6266xEVM Efficiency versus Load Current (V
OUT
= 1.8 V) ....................................................... 6
8 TPS6266xEVM Efficiency versus Load Current (V
OUT
= 1.2 V) ....................................................... 6
9 TPS62660EVM Startup .................................................................................................... 8
10 TPS62620EVM Start-Up................................................................................................... 8
11 TPS6261xEVM Start-Up ................................................................................................... 8
12 Power-Save Mode Ripple.................................................................................................. 9
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SLVU292A–April 2010–Revised April 2010 TPS6261x/TPS6262x/TPS6266xEVM
Copyright © 2010, Texas Instruments Incorporated
