User's Guide
SLUUB50–August 2014
TPS25921X-637EVM: Evaluation Module for TPS25921X
This user’s guide describes the evaluation module (EVM) for the TPS25921. The TPS25921X is an eFuse
with precision current limit, 4.5-V to 18-V supply voltage operation, programmable undervoltage,
overvoltage, overcurrent and inrush current protection features.
Contents
1 Introduction ................................................................................................................... 2
1.1 EVM Features....................................................................................................... 2
1.2 EVM Applications................................................................................................... 2
2 Description.................................................................................................................... 3
3 Schematics ................................................................................................................... 4
4 General Configurations ..................................................................................................... 5
4.1 Physical Access..................................................................................................... 5
4.2 Test Equipment and Setup ....................................................................................... 6
4.3 Test Setup and Procedures ....................................................................................... 7
5 EVM Assembly Drawings and Layout Guidelines...................................................................... 11
5.1 PCB Drawings ..................................................................................................... 11
6 Bill of Materials (BOM)..................................................................................................... 14
List of Figures
1 TPS25921X EVM Schematic............................................................................................... 4
2 EVM Setup with Test Equipment .......................................................................................... 7
3 J3= No Jumper Current Limit (1.5 A) Test Auto Retry (CH1) ........................................................ 10
4 J7 = No Jumper Current Limit (1.5A) Test with Latch (CH2)......................................................... 10
5 Top Side Placement ....................................................................................................... 11
6 Top Layer ................................................................................................................... 12
7 Bottom Layer................................................................................................................ 13
List of Tables
1 TPS25921X EVM Options and Settings.................................................................................. 3
2 Input and Output Connector Functionality................................................................................ 5
3 Test Points Description ..................................................................................................... 5
4 Jumper and LEDs Descriptions............................................................................................ 6
5 Power Supply Setting for PWR637........................................................................................ 8
6 Default Jumper Setting for PWR637 ...................................................................................... 8
7 PWR637 DMM Readings at Different Test Points....................................................................... 8
8 PWR637 Oscilloscope Setting for Current Limit Test................................................................... 9
9 PWR637 Jumper Settings for Current Limits ............................................................................ 9
10 TPS25921XEVM-637 Bill of Materials .................................................................................. 14
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SLUUB50–August 2014 TPS25921X-637EVM: Evaluation Module for TPS25921X
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