NCP1937BADAPGEVB:  90 W Adapter PFC+QR 10 MW Evaluation Board

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.

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.
製品 状態 Compliance 簡単な説明 使用パーツ アクション
90 W Adapter PFC+QR 10 MW Evaluation Board NCP1937A1DR2G NCP4304ADR2G
タイプ ドキュメント・タイトル ドキュメント ID/サイズ 修正
Eval Board: BOM NCP1937BADAPGEVB Bill of Materials ROHS Compliant NCP1937BADAPGEVB_BOM_ROHS.PDF - 290 KB  2 
Eval Board: Gerber NCP1937BADAPGEVB Gerber Layout Files (Zip Format) NCP1937BADAPGEVB_GERBERS.ZIP - 135 KB  2 
Eval Board: Schematic NCP1937BADAPGEVB Schematic NCP1937BADAPGEVB_SCHEMATIC.PDF - 366 KB  2 
Eval Board: Test Procedure NCP1937BADAPGEVB Test Procedure NCP1937BADAPGEVB_TEST_PROCEDURE.PDF - 156.0 KB  0 
Video Computer Solutions with NCP1937BADAPGEVB Evaluation Board TND6054/D  1 

Computer Solutions with NCP1937BADAPGEVB Evaluation Board
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