RDK-839 Power Integrations

Reference Design Report for a 12 W Power Title TM Supply Using TinySwitch -4 TNY288PG Specification 85 VAC 265 VAC Input, 12 V, 1 A Output Application TinySwitch-4 Reference Design Author Applications Engineering Department Document RDR-839 Number Date August 13, 2019 Revision 1.1 Summary and Features TM EcoSmart meets all existing and proposed energy efficiency standards including ErP. No-load consumption <30 mW more than 300 mW available in stand-by with 500 mW input > 84% average active-mode efficiency DOE6 and EC CoC (v5) The board can fit P/G or the cost-effective D package BP/M capacitor value selects power MOSFET current limit for greater design flexibility Accurate detection output overvoltage protection (OVP) using primary bias winding sensed shutdown feature 2 Accurately toleranced I f parameter (-10%, +12%) reduces system cost Increases MOSFET and magnetics power delivery Reduces overload power, which lowers output diode and capacitor costs Integrated TinySwitch-4 safety / reliability features Accurate (5%), auto-recovering, hysteretic thermal shutdown function maintains safe PCB temperatures under all conditions Auto-restart protects against output short-circuit and open loop fault conditions P and G package with >3.2 mm creepage on package enables reliable operation in high humidity and high pollution environments Meets EN550022 and CISPR-22 Class B conducted EMI with >12 dBV margin Meets IEC61000-4-5 Class 3 AC line surge Power Integrations 5245 Hellyer Avenue, San Jose, CA 95138 USA. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.power.com RDR-839 12 V, 1 A, Universal Input Supply 13-Aug-19 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.power.com. Power Integrations grants its customers a license under certain patent rights as set forth at