RDK-465 Power Integrations

Reference Design Report for a 4.5 W Non- Dimmable, High Efficiency (>87% ), Power Title Factor Corrected , Non-Isolated Buck LED TM Driver Using LYTSwitch -1 LYT1402D 90 VAC 300 VAC Input Specification 48 V , 95 mA Output TYP TYP Application Candelabra (E12) Bulb Author Applications Engineering Department Document RDK-465 Number Date August 4, 2016 Revision 1.0 Summary and Features Single-stage power factor corrected, PF >0.8 at 115 V and 230 V Accurate constant current regulation, 5% Meets <30% flicker percent requirement Highly energy efficient, >87% at 115 V and 230 V Low cost and low component count for compact PCB solution Integrated auto-restart protection features No-load / open-load output Output short-circuit Line surge or line overvoltage Thermal foldback for power reduction Over temperature shutdown with hysteretic automatic power recovery No damage during line brown-out or brown-in conditions Meets IEC 2.5 kV ring wave, 500 V differential surge Meets EN55015 conducted EMI Power Integrations 5245 Hellyer Avenue, San Jose, CA 95138 USA. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.power.com RDR-465 4.5 W Buck LED Driver Using LYT1402D 04-Aug-16 PATENT INFORMATION The products and applications illustrated herein (including transformer construction and circuits external to the products) may be covered by one or more U.S. and foreign patents, or potentially by pending U.S. and foreign patent applications assigned to Power Integrations. A complete list of Power Integrations patents may be found at www.powerint.com. Power Integrations grants its customers a license under certain patent rights as set forth at <