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SLVUA44B – June 2014 – Revised July 2017
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TPS25940EVM-635: Evaluation Module for TPS25940X
User's Guide
SLVUA44B – June 2014 – Revised July 2017
TPS25940EVM-635: Evaluation Module for TPS25940X
This user’s guide describes the evaluation module (EVM) for the Texas instruments TPS25940X devices.
TPS25940X devices are eFuse with true reverse blocking for power MUX that operates from 2.7 V to 18
V, the device has integrated back-to-back FETs with programmable undervoltage, overvoltage, reverse-
voltage, overcurrent and in-rush current protection features.
NOTE:
The TPS25940-Q1 and TPS25940L-Q1 devices can also be evaluated on this EVM by
replacing the TPS25940ARVC (U1) and TPS25940LRVC (U2) with the TPS25940AQRVC
and TPS25940LQRVC.
Contents
1
Introduction
...................................................................................................................
2
1.1
EVM Features
.......................................................................................................
2
1.2
EVM Applications
...................................................................................................
2
2
Description
....................................................................................................................
2
3
Schematic
.....................................................................................................................
3
4
General Configurations
.....................................................................................................
4
4.1
Physical Access
.....................................................................................................
4
4.2
Test Equipment
.....................................................................................................
5
4.3
Test Setup
...........................................................................................................
6
4.4
Test Procedures
....................................................................................................
7
5
EVM Assembly Drawings and Layout Guidelines
......................................................................
12
6
Bill of Materials (BOM)
.....................................................................................................
14
List of Figures
1
TPS25940XEVM Schematic
...............................................................................................
3
2
EVM Test Setup
.............................................................................................................
6
3
V
OUT
Ramp Up Time for CH1
...............................................................................................
9
4
V
OUT
Ramp Up Time for CH2
...............................................................................................
9
5
J4 = LO Current Limit Test Auto Retry (CH1)
..........................................................................
11
6
J9 = “No Jumper” Current Limit Test with Latch (CH2)
...............................................................
11
7
Top Side Placement
.......................................................................................................
12
8
Top Side Routing Layer
...................................................................................................
12
9
Bottom Side Routing Layer
...............................................................................................
13
List of Tables
1
TPS25940X EVM Options and Default Setting
..........................................................................
2
2
Input and Output Connector Functionality
................................................................................
4
3
Test Points Description
.....................................................................................................
4
4
Jumper and LED Descriptions
.............................................................................................
4
5
EVM Configuration Setting
.................................................................................................
5
6
Operational Range Setting for VIN1, VIN2 = 12 V, 5 V and 3.3 V
....................................................
7
7
PWR635 DMM Readings at Different Test Points
......................................................................
7
8
PWR635 Oscilloscope Setting for Ramp Up Voltage Test
.............................................................
8
