TPS2399数据手册集成电路（IC）的热插拔控制器规格书PDF

描述 Description

The TPS2398 and TPS2399 integrated circuits are hot swap power managers optimized for use in nominal −48 V systems. They incorporate an improved circuit breaker response that provides rapid protection from short circuits, while still enabling plug−ins to tolerate large transients that can be generated by the sudden switchover to a higher voltage supply. They are designed for supply voltage ranges up to −80 V, and are rated to withstand spikes to −100 V. In conjunction with an external N−channel FET and sense resistor, they can be used to enable live insertion of plug−in cards and modules in powered systems. Both devices provide load current slew rate and peak magnitude limiting, easily programmed by sense resistor value and a single external capacitor.

They also provide single-line fault reporting, electrical isolation of faulty cards, and protection against nuisance overcurrent trips. The TPS2398 latches off in response to current faults, while the TPS2399 periodically retries the load in the event of a fault.

特性 Features

• Wide Input Supply: −36 V to −80 V
• Wide input voltage range
• Transient Rating to −100 V
• Withstand input voltage spikes to −100 V
• Improved Transient Response
• Input current spike suppression during input voltage transient
• Εnable Input (EN)
• Output voltage could be switched on/off
• Programmable Current Limit
• Current limit could be set by external resistor
• Programmable Current Slew Rate
• Current slew rate could be set by external capacitor
• Fault Timer to Eliminate Nuisance Trips
• Load current spikes shorter than about 4us are ignored
• Open−Drain Power Good Output (/PG)
• /PG signal could be used to monitor hot-swap status

应用 Application

• −48 V Distributed Power Systems
• Redundant Negative Voltage Supplies
• Central Office Switching Systems
• Power source for telecom / computing (rack) systems

简介

TPS2399属于集成电路（IC）的热插拔控制器。由制造生产的TPS2399热插拔控制器PMIC - 热插拔控制器是能提供电路内保护和控制功能的半导体，可允许带电情况下在电路中插入或拔除其他组件。热插拔控制器可用于计算机网络和通用电源系统，主要根据输出电流、受控通道数量等特性，以及自动重试、故障超时和保护等特殊功能进行区分。