深圳市中立信电子科技有限公司

1 Features

1• Programmable Power Limiting and Current

Limiting for Complete Safe Operating Area (SOA)

Protection

• Wide Operating Range: 9 V to 80 V

• Latched Operation (TPS2490) and Automatic

Retry (TPS2491)

• High-Side Drive for Low-RDS(on) External Nchannel

MOSFET

• Programmable Fault Timer to Protect the

MOSFET and Eliminate Nuisance Shutdowns

• Power Good Open-Drain Output for Downstream

DC/DC Coordination

• Enable Can Be Used as a Programmable

Undervoltage Lockout or Logic Control

• Small, Space-Saving 10-pin VSSOP Package

• Calculator Tool Available (TPS2490/91 Design-in

Calculator, SLVC033)

2 Applications

• Server Backplanes

• Storage Area Networks (SAN)

• Medical Systems

• Plug-In Modules

• Base Stations

3 Description

The TPS249x are easy-to-use, positive high voltage,

10-pin Hot Swap Power Manager devices that safely

drive an external N-channel MOSFET switch. The

power limit and current limit (both are adjustable and

independent of each other) ensure that the external

MOSFET operates inside a selected safe operating

area (SOA) under the harshest operating conditions.

Applications include inrush current limiting, electronic

circuit breaker protection, controlled load turn-on,

interfacing to down-stream DC-to-DC converters, and

power feed protection. These devices are available in

a small, space-saving 10-pin VSSOP package and

significantly reduce the number of external devices,

saving precious board space. The TPS249x is

supported by application notes, an evaluation

module, and a design tool.
TPS2491DGSRTPS2491DGSRTPS2491DGSRTPS2491DGSRTPS2491DGSR

1功能

可编程限电和电流

完全安全操作区域(SOA)的限制

保护

•操作范围广:9v - 80v

•锁存操作(TPS2490)和自动

重试(TPS2491)

•高侧驱动低rds (on)外部Nchannel

场效应晶体管

•可编程故障定时器来保护

MOSFET和消除讨厌的关闭

•动力良好的下游开排输出

直流/直流协调

•Enable可用于可编程

欠压锁定或逻辑控制

•小巧，节省空间的10针VSSOP包

•计算器工具可用(TPS2490/91设计

计算器,SLVC033)

2应用程序

•服务器背板

•存储区域网络(SAN)

•医疗系统

•插件模块

•基站

3描述

TPS249x易于使用，正高压，

10针热交换电源管理器设备，安全

驱动外部n通道MOSFET开关。的

功率限制和电流限制(两者都是可调的和

相互独立)保证外部

MOSFET工作在一个选择的安全操作

在严酷的操作条件下的区域(SOA)。

应用范围包括涌流限制，电子

断路器保护，负载控制开启，

连接到下游dc - dc转换器，和

电力馈电保护。这些设备可以在

一个小的，节省空间的10针VSSOP包和

显著减少外部设备数量，

节省宝贵的板材空间。TPS249x是

由应用程序注释支持的评估

模块，和一个设计工具。