TI TPS2480智能保护热插拔控制解决方案
TI 公司的TPS2480/81是具有正电压智能保护的热插拔控制器和I2C电流监视器.具有可编程的FET功率限制,外接N沟FET栅极驱动,可编程的故障定时器,电流,电压和功率的I2C监视,1%的高精度电流监视,并具有动态校准,输电压9-20V,主要用在服务器,硬盘驱动,存储网络和基站.本文介绍了TPS2480/81主要特性, 功能方框图, 低压和高压应用电路图, 电流和电压测量配置图以及TPS2480 和TPS2481评估模块主要特性,电路图和材料清单, PCB顶层元件布局图.
Positive Voltage Intelligent Protection Device Hotswap Controller and I2C Current Monitor
The TPS2480/81 are designed to minimize inrush into applications and protect both the load and the FET from over-current or short circuit events. They control an external N-channel MOSFET switch and provide accurate voltage, current, and power monitoring using a configurable 12 bit A/D converter via an I2C interface. The independently adjustable power limit and current limit ensure that the external MOSFET operates within the FET’s Safe Operating Area (SOA).
The flexible design includes a Power Good output which can be used for sequencing as well as load fault indication. An external timer capacitor can set the fault time to help immunize the system from nuisance shutdowns during brief transient events.
TPS2480/81主要特性:
Programmable FET Power Limit
External N-Channel FET Gate Drive
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