OB2578T Overview
Description
OB2578T is an excellent primary side regulation power switch with CC/CV operation for medium level power AC/DC charger and adapter applications. The device operates in CCM/QR mode to provide high efficiency along with several functions of built-in protections.
Key Features
- Primary-side sensing and regulation operates in CCM/QR mode without TL431 and opto-coupler
- High precision constant voltage and current regulation at universal AC input
- Fixed frequency (65kHz) CCM mode operation with low line voltage at full load
- Integrated 4A MOSFET
- Quasi-resonant operation for high efficiency in high line voltage
