首页产品索引NCP1631

    NCP1631

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     Power Factor Controller, 2-Phase, Interleaved

    制造商:ON

    中文数据手册

    产品信息

    The NCP1631 is a controller for use in 2-phase interleaved power factor correction pre-converters. Interleaving consists of paralleling two small stages in lieu of a single big stage. This approach has several merits like ease of implementation, ability to use smaller components, and better distribution of heating. These attributes make the interleaved PFC topology attractive to slim form factor applications such as flat panel TVs and ultra-slim notebook adapters. Interleaving can also extend the power range of Critical Conduction Mode, which is an efficient and cost-effective (no need for low trr diodes) operating mode. The NCP1631 operates in Frequency Clamped Critical Conduction mode (FcCrM). The circuit utilizes frequency foldback to linearly decay the clamping frequency as a function of power. As a result, the NCP1631 provides optimized efficiency across the load range. In addition, the NCP1631 drivers exhibit a 180 phase shift for a significantly reduced current ripple, which lowers EMI and reduces the rms current in the bulk capacitor. The NCP1631 incorporates all the features necessary for building robust and compact interleaved PFC stages, with a minimum of external components. Available in SOIC-16 package.
    • 180° out of phase operation
    • Frequency foldback at low power
    • Integrated overcurrent protection, overvoltage protection, UVLO, and brown-out protection
    • Frequency clamped critical conduction mode (FcCrM) operation

    电路图、引脚图和封装图

    在线购买

    型号制造商描述购买
    NCP1631DR2GONPFC IC Critical Conduction (CRM), Discontinuous Conduction (DCM) 130kHz 16-SOIC 立即购买

    技术资料

    标题类型大小(KB)下载
    NCP1631PFCGEVB Test ProcedurePDF391 点击下载
    NCP1631PFCGEVB ManualPDF482 点击下载
    Interleaved Power Factor Correction Evaluation Board - NCP1631PFCGEVB Test ProcedureUNKNOW136 点击下载
    Characteristics of Interleaved PFC StagesPDF371 点击下载
    Key Steps to Design an Interleaved PFC Stage Driven by the NCP1631PDF300 点击下载
    Power Factor Controller, 2-Phase, InterleavedPDF450 点击下载
    Peformance of a 300-W Interleaved PFC driven by the NCP1631PDF249 点击下载
    Further Improve the Low-Power Efficiency of Your NCP1631-Driven Interleaved PFCPDF189 点击下载

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