Datasheet

User's Guide

SLUU425A–May 2010–Revised March 2011

Using the TPS2492/3 Hot Swap Controller

This User’s Guide describes the setup and operation of the TPS2492/3 System Test Board.

1 Introduction

This User’s Guide describes the features of the TPS2492/3EVM. The TPS2492/3 schematic, layout and

List of Materials are provided.

2 Description

The EVM is a 9-V to 80-V module using the TPS2492/3 hot swap controller with external MOSFET. At

power on, the output is power limited to control inrush current and protect the MOSFET. On an

over-current condition, the controller interrupts power to the load at high speed and signals load status.

Operating current, MOSFET power dissipation, and fault timer settings are hardware programmable.

2.1 Applications

• Server

– Plug-In Circuit Boards

– RAID / Disk Drive

• Telecom

– ATCA

– Micro-ATCA

• General Hot Plug

2.2 Features

• 9-V to 80-V Operation

• Controlled Inrush Current

• Fast Circuit Breaker Control

• Hardware Programmable

– MOSFET Power Limit

– Fault Current

– Fault Timer to Avoid Nuisance Tripping

– TPS2492 Latch Off or TPS2493 Retry

• LED Status Display

– FAULT

– POWER GOOD

• Slide Switch Controling the ENABLE Signal.

• 25-A Nominal Operation with Thermal Characteristics for Proper MOSFET Operation

• On-Board transorb for Over-Voltage Input Protection

• Common Output Diode Prevents Negative Spiking if the Load is Removed While Powered On.

• IMON Output Signal Voltage Representing Load Current.

• Test Points for Circuit Operation Monitoring

Using the TPS2492/3 Hot Swap Controller SLUU425A–May 2010– Revised March 2011

Submit Documentation Feedback