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User's Guide
SLVU261 – January 2009
TPS61500EVM-369
This user’s guide describes the characteristics, operation, and use of the TPS61500EVM-369 evaluation
module (EVM). This EVM contains the Texas Instruments TPS61500 boost converter, configured with
external components to regulate current through a string of WLEDs. This user’s guide includes EVM
specifications, recommended test setup, test results, bill of materials, and a schematic diagram.
Contents
1 Introduction ................................................................................................................... 2
1.1 Performance Specification Summary ............................................................................ 2
1.2 Modifications ......................................................................................................... 2
2 TPS61500EVM-369 Setup ................................................................................................. 2
2.1 Input/Output Connections .......................................................................................... 2
3 Test Results .................................................................................................................. 4
4 Board Layout ................................................................................................................. 5
5 Schematic and Bill of Materials ............................................................................................ 9
5.1 TPS61500EVM-369 Schematic ................................................................................. 10
5.2 TPS61500EVM-369 Bill of Materials ............................................................................ 11
List of Figures
1 Efficiency vs. Output Current Using Analog Dimming .................................................................. 4
2 PWM Dimming at V
IN
= 5 V (With Optional PWM Dimming Components Q1, Q2, R6 and R9 Installed) ........ 4
3 Control Loop Response ..................................................................................................... 4
4 Assembly Layer inlcuding Silk Screen .................................................................................... 5
5 Top Copper Layer ........................................................................................................... 6
6 Bottom Copper Layer........................................................................................................ 7
7 Internal Layer 1 .............................................................................................................. 8
8 Internal Layer 2 .............................................................................................................. 9
List of Tables
1 Typical Performance Specification Summary ............................................................................ 2
2 Bill of Materials ............................................................................................................. 11
SLVU261 – January 2009 TPS61500EVM-369 1
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