UCC28880 700V 最低 IQ 离线开关

德州仪器 UCC28880 700V 最低 IQ 离线开关在一个单片器件中集成了控制器和 700V 功率 MOSFET。该器件还集成了高压电流源，能够在经整流的市电电压下直接启动和运行。该器件静态电流较低，能够提供出色的效率。借助于 UCC28880，使用最少的外部元件即可构建降压、降压/升压以及反激拓扑等最为常用的转换器拓扑。UCC28880 集成了软启动功能，用于控制功率级启动，能够最大程度减小对功率级元件的压力。
特性

_Integrated Power MOSFET (Switch) Rated to 700V Drain-to-Source Voltage
_Integrated High-Voltage Current Source for Internal Low-Voltage Supply Generation
_Soft Start
_Self-Biased Switcher (start-up and_operation directly from rectified mains voltage)
_Supports Buck, Buck-Boost, and_Flyback Topologies

_<100μA Device Quiescent Current
_Robust Performance with Inductor Current Runaway Prevention
_Protection
_Current Limit
_Overload and_Output Short Circuit
_Over Temperature

应用

_LAC-to-DC Power Supplies (with output currents up to 100mA across temperature and_input voltage range)
_Metering, Home Automation, Infrastructure SMPS

_Low-side Buck Topology for TRIAC Driver
_Appliances, White Goods, and_LED Drivers