Silergy SY50103
SY50103 is a PWM controller with several features to enhance performance of Flyback converters. It integrates a 600V MOSFET to decrease physical volume. Both current and voltage regulation are achieved by primary side control technology for low cost application.APPLICATIONS
Note: SY50103 Flyback Regulator With Primary Side CV/CC Control For Adapters and Chargers Preliminary SpecificationGENERAL DESCRIPTION
To achieve higher efficiency and better EMI performance, SY50103 drives Flyback converters in the Quasi-Resonant mode. Ordering Information SY50103 □(□□)□ Temperature Code Package Code Optional Spec Code Ordering Number SY50103FAC Package type SO8 Note ----FEATURES
● Integrated 600V MOSFET● Primary side CV/CC control eliminates the opto- coupler
● Valley turn-on of the primary MOSFET to achieve low switching losses
● Low start up current: 15µA typical
● Maximum switching frequency limitation 120kHz
● Compact package: SO8
APPLICATIONS
● AC/DC adapters● Battery Chargers Recommended operating output power Products 90~264Vac 176~264Vac SY50103 9W 13W Typical
APPLICATIONS
DB1 C1 R2 C2 R1 D1 D2 R3 C3 R4 SY50103 NC DRAIN GND NC VOUT+ C5 R8 VOUT- ZCS COMP R7 R5 R6 CY1 C4 Figure 1. Schematic Diagram AN_SY50103 Rev.0.1 Silergy Corp. Confidential-...