Texas Instruments 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
Functional Block Diagram
Associated Development Tools
Texas Instruments UCC28911EVM-718评估模块 (EVM)
可以在不使用光耦合器和二次侧反馈元件的情况下提供输出电压和电流调节。
发布日期: 2014-09-23
| 更新日期: 2022-03-11