【产品】必易微推出KP2801准谐振升压PFC控制器，支持单绕组电感低成本设计

时间： 2021-12-30 来源：充电头网

技术问答

近年来，随着USB PD快充的应用越来越广泛，大功率的PD快充，在笔记本上一定程度的取代了传统圆口的电源，让笔记本的使用更加灵活。同时PD快充也应用在手机的快速充电上，在半小时之内充满电，这在过去都是不可想象的。

针对高功率密度电源的需求，必易微高达500kHz的单管反激氮化镓驱动控制器。而大功率的PD快充和大功率电源，都离不开PFC芯片。在充电器内部加入PFC芯片，可以通过升压的方式来减小充电器初级电容容量，缩小充电器体积，另外通过功率因数校正，可以消除大容量电解电容充电时的冲击电流，避免充电器工作对电网造成干扰。

致力于电源管理方案的必易微电子，推出了一款临界模式的升压PFC控制器KP2801，在支持单绕组电感低成本设计的同时还可以获得优秀的谐波和效率表现。

图 1

必易微KP2801内置650V高压启动电路，启动时间小于0.2秒，当后级搭配LLC时保证了电源启动过程中更早建立稳定的母线电压；KP2801针对轻载效率和待机损耗进行优化，可实现0.95以上的高PF值以及低于8%的总谐波电流失真，并针对轻载的总谐波电流失真进行优化。

KP2801系列是高度集成的恒压Boost控制器，芯片采用了工作在临界导通模式下的升压功率因素控制（BCM Boost-PFC），高PF值，低THD。

KP2801内部集成消磁信号检测技术和高压供电电路，无需辅助绕组检测消磁和供电，简化了系统的设计和生产成本。

KP2801集成有完备的保护能以系统安全可靠地运行，如：VDD欠压功能（UVLO）、交流输入欠压保护（BOP），输出过压保护（UOP），输出欠压保护（UVP）、过热保护（OTP）、逐周期电流限制（OCP），异常过流保护（AOCP）以及管脚开短路保护。

特点

●内置700V高压供电电路，启动时间<200ms

●轻载效率优化和特机损耗优化

●功率因数＞0.95，THD<8%

●轻载THD优化

●动态性能优化

●支持单绕组电感

●内置±2%（@Tj＝25°C）恒压参考电压

●内部保护功能：

∎输入欠压保护（BOP）

∎输出欠压保护（UVP）

∎输出过压保护（OVP）

∎VDD过压保护（VDD OVP）

∎VDD 欠压保护（VDD UVLO）

∎逐周期电流限制（OCP）

∎异常过流保护（AOCP）

∎前沿消隐（LEB）

∎过热保护（OTP）

●封装类型SOP-8

典型应用

LED照明电源和适配器电源

图 2 典型应用电路

KP2801具有良好的动态性能，内部集成消磁信号检测技术，PFC升压电感无需辅助绕组进行消磁检测，降低系统成本。同时采用SOP-8封装，可减小空间占用，支持小体积电源应用。

KP2801内置全面的保护功能，具有电源输入欠压保护、输出欠压保护、输出过压保护、芯片供电过压和欠压保护，支持逐周期电流限制，支持自适应过流保护，电流检测支持前沿消隐，芯片过热保护等多种保护功能。

KP2801可用于USB PD快充，电源适配器，电视机，LED照明等需要功率因数校正的场合应用，以满足日益严苛的功率因数要求。

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本文由三年不鸣转载自充电头网，原文标题为:必易微推出KP2801准谐振升压PFC控制器，本站所有转载文章系出于传递更多信息之目的，且明确注明来源，不希望被转载的媒体或个人可与我们联系，我们将立即进行删除处理。

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必易微（KIWI）电源解决方案产品选型指南

描述- 深圳市必易微电子股份有限公司 (股票代码：688045) 拥有半导体领域的资深专家和高效的管理团队，主要从事高性能模拟及数模混合集成电路的研发和销售，在杭州、厦门、上海、成都、中山等地设有研发中心及分支机构。必易微高度重视知识产权的开发和保护，已拥有多项集成电路和系统应用的国际、国内专利。主营产品包括 AC-DC、DC-DC、驱动 IC、线性稳压、保护芯片、电池管理等，为消费电子、工业、通讯、计算机等领域客户提供完整电源解决方案和系统集成。

型号- KP3282,KP40611W,KP3281,KP23130M,KP311BH,KP212,KP2264H,KP206D,KP81106A,KP30173M,KP2591A,KP206A,KP206B,KP36374,KP36373,KP2066,KP2064,KP8530X,KP41282,KP3210B,KP22066A,KP2182,KP2062,KP30172M,KP21822M,KP35052,KP36384,KP35053,KP22308,KP36383,KP36382,KP35051,KP22306,KP40511,KP40512,KP23132M,KP23132K,KP23162,KP2262H,KP23161,KP23160,KP1511,KP35026,KP23264M,KP41260,KP41140,KP41261,KP2806A,KP41141,KP41262,KP41142,KP201,KP30262,KP30264,KP206,KP35032,KP35033,KP30261,KP35031,KP22315A,KP40512M,KP40612,KP3126,KP21824M,KP21824L,KP40611,KP23267,KP23267M,KP21825C,KP4050,KP30181H,KP32652,KP30182H,KP32651,KP35001,KP36573,KP36572,KP40561P,KP22066,KP22064,KP41240,KP41361,KP3501A,KP41241,KP23151,KP22062,KP23150,KP22305L,KP30362,KP2315A,KP2206A,KP22305A,KP22035,KP22033,KP2813A,KP32511,KP40613QD,KP30183M,KP32512,KP36675,KP36674,KP35101,KP36673,KP22306A,KP21827M,KP23132,KP23131,KP23130,KP41340,KP30182M,KP30183H,KP30584,KP35111,KP3251A,KP23221,KP2201C,KP35200,KP8110X,KP22308B,KP3310,KP22308A,KP3311,KP15051,KP23111,KP23110,KP15052,KP32621,KP32622,KP1505A,KP2311A,KP2202A,KP81103,KP81102,KP81101,KP81106,KP41262C,KP2205,KP2206,KP2203,KP21827,KP21824,KP2201,KP2202,KP4060,KP41261C,KP23162M,KP40561,KP23162K,KP311A,KP311B,KP2822,KP3116,KP85631,KP3111,KP2264,KP35083,KP2261,KP40562,KP2262,KP35081,KP3114,KP35082,KP3112,KP40511P,KP201H,KP201F,KP201K,KP201A,KP31614,KP201E,KP22062A,KP201B,KP201C,KP2813,KP3221,KP2011,KP3224,KP3116H,KP3222,KP2012,KP2013,KP3211B,KP23152M,KP2806,KP321B,KP321AB,KP2803,KP30171,KP2801,KP35064,KP40661,KP35062,KP3113H,KP3212B,KP15113,KP15114,KP15111,KP22064A,KP3206,KP3205,KP3211H,KP2591,KP3114H

选型指南 - 必易微 - REV 1.0 - 2023/6/1 PDF 中文下载

必易微荣获“智能跨界优秀企业”和”全屋智能及商用系统优秀新供应链奖”两项大奖

2024年1月25日，第七届物联网照明大会暨“智光杯”跨界颁奖典礼在上海召开。本届大会以“天光云影，双碳先行”为主题，必易微作为整体芯片解决方案供应商，凭借过硬的技术实力，优异的产品表现，完善的产品渠道与高效的客户服务，斩获“智能跨界优秀企业”和“全屋智能及商用系统优秀新供应链奖”两项大奖。

原厂动态发布时间 : 2024-02-02

必易微（KIWI）IOT领域电源管理芯片产品介绍

型号- KP2190,KP311AWPA,KP20H,KP3281DP,KP2191,KP4110-1-2,KP2192,KP212,KP86888,KP3116WPA,KP2501,KP86884,KP206A,KP216,KP3210BSGA,KP206B,KP214,KP3224DP,KP3205SGA,KP3310,KP3126SG,KP23111,KP2182,KP23110,KP101,KP201E-H,KP15026VPA,KP86888S,KP3110-2-4-6,KP201A-H,KP3116SGA,KP22306,KP322XDP,KP216X,KP15012SPA,KP23132M,KM8684NQ,KP3221DP,KP3282DP,KP15026,KP3310DPA,KP3210-1-2B,KP3211BDP,KP2201-B,KP2326,KM868X,KP1513,KP3114WPA,KP146X,KP2164,KP206A-B,KP2162,KP2202,KP3120SPA,KP2161,KP201,KP18026,KP15026WPA,KP3112LGA,KP214X,KP2182X,KP206,KP3114SGA,KM8688NQ,KP4055,KM8684NS,KP3126,KP226X,KP2061-4,KP23266,KP15014SPA,KP23264,KP4051,KP201-E-F,KP1511X,KP3210SGA,KP322X,KP201X,KP321ABSGA,KP3110,KP3222DP,KP1452,KP3221SG,KP4124X,KP2313X,KP201H,KP23133M,KP201F,KP18051ESPA,KP41242,KP3211BSGA,KP41240,KP41241,KP23152,KP15012-4,KP3210BDP,KP23151,KP201A,KP23150,KP1512X,KP201E,KP201B,KP201C,KP212X,KP36673-4,KP35015,KP3221SGA,KP2010,KP2131,KP3310SPA,KP3112SGA,KP2011,KP2132,KP2130,KP2012,KP2013,KP3284DP,KP3126SGA,KP18061ESPA,KP1315X,KP3110SPA,KP2126,KP4050-A,KP18055ESPA,KP2801,KP142X,KP1030,KP2120,KP2124,KP328X,KP2122,KP311ALGA,KP23133,KP18069,KP23132,KP3212BDP,KP226XH,KP41240-1-2,KP141X,KP401,KP2591,KP21821-2-4,KP206X

商品及供应商介绍 - 必易微 - 2020-07 PDF 中文下载