NCP1937BADAPGEVB

NCP1937BADAPGEVB:90 W Adapter PFC+QR 10 MW Evaluation Board Evaluation Board Description Design Support This combination IC integrates power factor correction (PFC) and quasi-resonant flyback functionality necessary to implement a compact and highly efficient Switched Mode Power Supply for an adapter application. Technical Documentation Design Resources Technical Support Sales Support   The PFC stage exhibits near-unity power factor while operating in a Critical Conduction Mode (CrM) with a maximum frequency clamp. The circuit incorporates all the features necessary for building a robust and compact PFC stage while minimizing the number of external components.     The quasi-resonant current-mode flyback stage features a proprietary valley-lockout circuitry, ensuring stable valley switching. This system works down to the 4th valley and toggles to a frequency foldback mode with a minimum frequency clamp beyond the 4th valley to eliminate audible noise. Skip mode operation allows excellent efficiency in light load conditions while consuming very low standby power consumption. Evaluation Board Information Evaluation Board Status PbShort free Description NCP1937BADAPGEVB Active Parts Used Action 90 W Adapter NCP1937A1DR2G, NCP4304ADR2G,  PFC+QR 10 NCP4304AMNTWG, NCP4304BDR2G,  MW Evaluation NCP4304BMNTWG, NCP4355BDR2G Board Technical Documents Type Document Title Document ID/Size Rev Eval Board: BOM NCP1937BADAPGEVB Bill of Materials ROHS Compliant NCP1937BADAPGEVB_BOM_ROHS.PDF 152.0 KB 1.2 Eval Board: Gerber NCP1937BADAPGEVB Gerber Layout Files (Zip Format) NCP1937BADAPGEVB_GERBERS.ZIP - 102.0 KB 1 Eval Board: Schematic NCP1937BADAPGEVB Schematic NCP1937BADAPGEVB_SCHEMATIC.PDF 132.0 KB 1.2 Eval Board: Test Procedure NCP1937BADAPGEVB Test Procedure NCP1937BADAPGEVB_TEST_PROCEDURE.PDF 0 - 156.0 KB Privacy Policy | Terms of Use | Site Map | Careers | Contact Us | Terms and Conditions | Mobile Portal Copyright © 1999-2013 ON Semiconductor Follow Us http://www.onsemi.com/PowerSolutions/evalBoard.do?id=NCP1937BADAPGEVB[7/8/2013 4:10:07 PM]