Datasheet

User's Guide

SLUU456–October 2010

TPS2394 Hot Swap Controller System

1 Introduction

This User’s Guide describes the setup and operation of the TPS2394 System Test Board. The

TPS2394EVM-652 User Guide also provides TPS2394EVM-652 Schematic, EVM Assembly and PCB

Layout and List of Materials.

2 Description

The TPS2394EVM-652 is a -10-V to -80-V module using the TPS2394 hot-swap controller with external

MOSFET. At power on, the output is a current ramp to control inrush current. On an over-current

condition, the controller interrupts power to the load at high speed and signals load status. Operating

current, fault current and fault timer settings are hardware programmable.

2.1 Power Systems

• -48-V distributed

2.2 Telecom

• ATCA

• Micro-ATCA

• Central Office

• Base Stations

2.3 Features

• -10-V to -80-V Operation

• Programmable Linear Inrush Slew Rate

• Programmable Current Limit

• Programmable UV and OV Hysteresis and Limits

• Fault timer Eliminates Nuisance Trips

• Power Good and Fault Outputs

• Retry Controller

• LED Status Display

• A Slide Switch Controled ENABLE Signal

• PCB Designed 5-A nominal operation (with thermal characteristics for proper MOSFET operation)

• Test Points Available to Monitor Circuit Operation

TPS2394 Hot Swap Controller System SLUU456–October 2010

Submit Documentation Feedback