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

NCP1631电路图
NCP1631电路图

在线购买

型号	制造商	描述	购买
NCP1631DR2G	ON	PFC 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 Procedure	PDF	391	点击下载
NCP1631PFCGEVB Manual	PDF	482	点击下载
Interleaved Power Factor Correction Evaluation Board - NCP1631PFCGEVB Test Procedure	UNKNOW	136	点击下载
Characteristics of Interleaved PFC Stages	PDF	371	点击下载
Key Steps to Design an Interleaved PFC Stage Driven by the NCP1631	PDF	300	点击下载
Power Factor Controller, 2-Phase, Interleaved	PDF	450	点击下载
Peformance of a 300-W Interleaved PFC driven by the NCP1631	PDF	249	点击下载
Further Improve the Low-Power Efficiency of Your NCP1631-Driven Interleaved PFC	PDF	189	点击下载

应用案例更多案例

温度传感器IC：DS1631
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2023-05-17
温度传感器IC：DS1631
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2023-03-01
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2010-02-25
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2010-02-25
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Abstract: This application note introduces the user to software for interfacing a DS5000 (8051 compatible) microcontroller to the DS1631 temperature sensor. The DS1631 incorporates a standard 2-wire serial digital interface. Software code
2010-02-25
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Abstract: This application note introduces the user to software for interfacing a DS5000 (8051 compatible) microcontroller to the DS1631 temperature sensor. The DS1631 incorporates a standard 2-wire serial digital interface. Software code
2010-02-25
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2010-02-25
uPD16311在DVD前面板控制电路中的应用
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2010-02-25

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