基于NCP1200A的反激电源的分析和设计  

Analysis and Design of Novel Flyback Supply Based on NCP1200A

作　　者：宋延涛[1] 杨水涛[1] 赵慧杰[1] 

机构地区：[1]浙江大学电气工程学院,浙江杭州310027

出　　处：《电源技术应用》2006年第5期21-24,共4页Power Supply Technologles and Applications

摘　　要：NCP1200A是新型低功耗离线式电源控制芯片,将时钟发生器、短路保护、前沿消隐等多种功能集成于芯片内部,大大简化了电源设计。介绍并分析了芯片和它的两个重要特性——动态自供电和跳周期模式,并采用该芯片设计了高输入电压微功率反激电源。NCP1200A,a PWM current-mode controller for off-line supplies featuring low standby power, is introduced. Especially, its two important features—— dynamic self-supply and skipping cycle mode are analyzed in detail and design a flyback supply with good performances using NCP1200A.

关 键 词：NCP1200A 反激电源 跳周期模式 

分 类 号：TN492[电子电信—微电子学与固体电子学]