Texas Instruments TPS25944X635EVM, User Manual

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Important Note to TPS25944XEVM-635 Users
User's Guide
SLUUBC2A – May 2015 – Revised July 2015
TPS25944X635EVM: Evaluation Module for TPS25944X
This user’s guide describes the evaluation module (EVM) for the Texas instruments TPS25944X devices.
TPS25944X devices are circuit breaker with True Reverse Blocking for Power Mux that operates from 2.7
V to 18 V, device has integrated back-to-back FETs with programmable undervoltage, overvoltage,
reverse-voltage, overcurrent and in-rush current protection features.
While ordering the TPS25944XEVM-635, customers may receive the EVM with TPS25940XEVM-635 or
TPS25942XEVM-635 labels.
Make the following changes to configure the received EVM as TPS25944XEVM-635, to achieve the
TPS25944X circuit breaker functionality:
1. Please order TPS25944ARVCR and TPS25944LRVCR samples from www.ti.com
2. Replace the U1, as the with TPS25944A
3. Replace the U2, as the with TPS25944L
4. Make sure the following parts are unpopulated:
• R7, R8
Contents
1 Introduction
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2
1.1 EVM Features
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2
1.2 EVM Applications
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2
2 Description
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3
3 Schematic
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4
4 General Configurations
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5
4.1 Physical Access
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5
4.2 Test Equipment
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6
4.3 Test Setup
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7
4.4 Test Procedures
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5 EVM Assembly Drawings and Layout Guidelines
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13
5.1 PCB Drawings
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13
6 Bill of Materials (BOM)
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15
List of Figures
1 TPS25944XEVM Schematic
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4
2 EVM Test Setup
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3 Vout Ramp-Up Time of Auto-Retry Circuit Breaker (CH1)
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4 Vout Ramp-up Time of Latched Circuit Breaker (CH2)
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5 Output Short Circuit Behavior of Auto-Retry Circuit Breaker (CH1)
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6 Circuit Breaking Time Delay (CH1)
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7 Output Short-Circuit Behavior of Latched Circuit Breaker (CH2)
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8 Circuit-Breaking Time Delay (CH2)
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9 Top Side Placement
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10 Top Side Routing Layer
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11 Bottom Side Routing Layer
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14
1 SLUUBC2A – May 2015 – Revised July 2015 TPS25944X635EVM: Evaluation Module for TPS25944X
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