Control methodPrimary-side regulationDuty cycle (Max) (%)99Frequency (Max) (kHz)80UVLO thresholds on/off (V)21/7.7FeaturesPSR, DCMOperating temperature range (C)-40 to 125RatingCatalogopen-in-new查找其它 反激式控制器
The UCC28720EVM-212 is a 5W evaluation module for evaluating an off line adapter for USB applications. It is intended for evaluation purposes and is not intended to be an end product. The UCC28720EVM-212 converters 100V to 240V RMS input voltage down to 5V DC, with a 1A current limit for USB adapter (...)
<10mW no load power
Primary Side Regulation (PSR) eliminates opto-coupler
+/- 5% Voltage & Current Regulation
Quasi-resonant valley switching operation for highest overall efficiency
PMP20421 — The PMP20421 is a low cost bias supply reference design with 12V/850mA output from 120VAC input. This design uses BJT with UCC28722 primary-side regulation BJT controller and single layer PCB to reduce the overall BOM cost.