UCC28880参考设计电路|离线开关应用电路
UCC28880特性:集成式功率MOSFET(开关),漏源电压额定值为700V;集成高压电流源,用于生成内部低压电源;支持降压、降压/升压和反激拓扑结构
UCC28880典型应用范围:交流转直流电源(在温度和输入电压范围内的输出电流高达100mA);电表、家庭自动化、基础设施开关模式电源;晶闸管(TRIAC)驱动器的低侧降压拓扑;相家电、白色家电和发光二极管(LED)驱动器
UCC28880参考设计应用电路:
图1UCC28880内部结构图
TheUCC28880 integrates the controller and a 700-V power MOSFET into one monolithic device. The device also integrates a high-voltage current source,enabling start up and operation directly from the rectified mains voltage.
图2UCC28880参考设计图
TheUCC28880 incorporates a soft-start feature for controlled start up of the power stage which minimizes the stress on the power-stage components.
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