MPS150非隔离电源应用规格书MP150的方案.pdf

MP150 Offline Primary-Side Regulator For Low Power Applications DESCRIPTION FEATURES MP150 is a primary-side regulator that provides • Primary-side constant voltage (CV) control, accurate constant voltage (CV) regulation supporting Buck, Buck-boost, Boost and without the opto-coupler, and supports Buck, Flyback topologies Buck-boost, Boost and Flyback topologies. It • Integrated 500V/30Ω MOSFET has an integrated 500V MOSFET that simplifies • 150mW No-load power consumption the structure and reduces costs. These features • Up to 2W output power help to make it a competitive candidate for off- • Maximum DCM output current less than line low power applications, such as home 120mA appliances and standby power. • Maximum CCM output current less than 200mA MP150 is a green-mode operation regulator. Both the peak current and switching frequency • Frequency foldback decrease as the load decreases to provide • Maximum frequency limitation excellent efficiency performance at light load, • Peak current compression thus improving the overall average efficiency. • Internal high-voltage current source The MP150 features various protections, APPLICATIONS including thermal shutdown (TSD), VCC under-