GP8511

GP8511 Single Stage Buck PFC Controller for LED Lighting Description Features The GP8551 is a single stage Buck PFC controller targeting at LED lighting applications. It integrates a 600V MOSFET to decrease physical volume. It adopts the proprietary control architecture to achieve an accurate regulation of LED current, unity power factor, and quasi-resonant valley turn-on high efficiency operation. It integrates open/short LED protection and eliminates the need for opto-coupler, thus minimizing the component count and board. GP8551 is offered in 8-SOP package. - Built-in 600V Power MOSFET - Valley turn-on of the MOSFET to achieve low switching losses - 0.3V current sense reference voltage leads to a lower sense resistance thus a lower conduction loss. - Low start up current: 12μA typical - Short LED and Open LED protection - P.F. >0.9 with single-stage conversion. - Maximum frequency limit: 200KHz - Compact SMD type package: 8-SOP Application LED lighting Ordering Information Device GP8511 Marking 8511 Package 8-SOP Rev.2 - 1 - Mar. 2015 Pin Assignment GP8511 Pin Description No. Pin Name Pin Function Description 1 COMP Feedback Compensation Output 2 ZCS Zero Current Sense Input 3 VCC Power Supply Input 4 CS Current Sense Input 5,6 DRAIN High Voltage Drain Input 7,8 GND Ground Rev.2 - 2 - Mar. 2015 Block Diagram GP8511 Absolute Maximum Ratings Symbol Parameter Vdrain Id Vcc Vdrv Vzcs Vin Tj Ta Tstg Pd HV Drain Voltage HV Drain ...