【产品】国产低成本恒流恒压原边控制器KP211，适于小功率离线式充电器应用
必易微电子的KP211是一款高性能、低成本恒流恒压原边控制器，可提供高精度恒压和恒流输出性能，尤其适合于小功率离线式充电器应用中，典型应用包括：手机充电器、交流适配器、LED照明。
在恒压输出模式中，KP211采用多模式工作方式，即调幅控制 (AM) 和调频控制 (FM) 相结合，提高了系统的效率和可靠性。在恒流输出模式中，芯片采用调频控制方式，同时集成了线电压和负载电压的恒流补偿。采用KP211可以工作无异音，同时可保证优异的动态性能。利用集成的线损补偿功能，可获得高性能的恒压输出表现。
KP211集成有多种保护功能：VDD 欠压保护 (UVLO)、VDD 过压保护 (OVP)、逐周期限流保护 (OCP)、短路保护 (SLP)、管脚悬空保护和 VDD 箝位等。
主要特点：
三极管驱动式低成本方案
±4% 恒流、恒压精度
待机功耗<70mW
多模式原边控制方式
工作无异音
优化的动态响应
可调式线损补偿
集成线电压和负载电压的恒流补偿
集成完善的保护功能：
短路保护 (SLP)
逐周期限流保护 (OCP)
前沿消隐 (LEB)
管脚悬空保护
VDD 过压保护和欠压保护
VDD 箝位保护
封装 SOT23-5L 且三种脚位可选：KP211A、KP211B、KP211C
产品封装
典型应用电路
订购信息
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本文由董慧转载自必易微电子，原文标题为:KP211低成本、恒流恒压原边控制器，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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