UCC28881

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community Reference Design UCC28881 SLUSC36B – NOVEMBER 2015 – REVISED JANUARY 2016 UCC28881 700-V, 225-mA Low Quiescent Current Off-Line Converter 1 Features 1 Integrated 14-Ω, 700-V Power MOSFET Integrated High-Voltage Current Source for Internal Device Bias Power Integrated Current Sense Internal Soft Start Self-Biased Switcher (Start Up and Operation Directly from Rectified Mains Voltage) Supports Buck, Buck-Boost and Flyback Topologies <100-μA Device Quiescent Current Robust Current Protection During Load Short Circuit Protection – Current Limit – Overload and Output Short Circuit – Over Temperature 2 Applications AC-to-DC Power Supplies (Non-Isolated Buck Converter with Output Current up to 225 mA for CCM; 150 mA for DCM) E-Meter, Home Automation SMPS Bias Power for MCU, RF and IoT Enabled Devices Appliances, White Goods and LED Drivers 3 Description The UCC28881 integrates the controller and a 14-Ω, 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. UCC28881 is the same family device of UCC28880, with higher current handling capability. The low quiescent current of the device enables excellent efficiency. With the UCC28881 the most common converter topologies, such as buck, buckboost and flyback can be built using a minimum number of ex...