基于电流临界连续模式的超高效率准谐振直流开关电源的设计  

Design of ultra high efficiency quasi resonant DC switching power supply based on current critical continuous mode

作　　者：张松权 汤健彬[2] 沈玉富 贾建国 ZHANG Song-quan;TANG Jian-bin;SHEN Yu-fu;JIA Jianguo(Hangzhou Pangu Automation System Co.,Ltd.,,Hangzhou 310000,China;Zhejiang University of technology,Hangzhou 310000,China)

机构地区：[1]杭州盘古自动化系统有限公司,杭州310000 [2]浙江工业大学,杭州310000

出　　处：《自动化与仪器仪表》2022年第6期265-268,共4页Automation & Instrumentation

基　　金：国家重点研发计划“制造基础技术与关键部件”重点专项(2018YFB2003702)。

摘　　要：准谐振技术在AC/DC电源中已广泛使用,这种技术能显著提高电源转换效率,PFM+PWM工作模式及“跳周期”功能使电源在不同功率输出的情况下都可获得较高的整机效率。提出了将该技术运用到低电压输入输出DC/DC电源上的方法,通过一系列优化,运用NCP1207芯片实现了超过80%的超高转换效率。准谐振反激拓扑对比推挽拓扑和传统单端反激拓扑,转换效率有明显的优势,而且结构简单,设计的计算理论值更接近实际调试结果。Quasi-resonant technology has been widely used in AC/DC power supplies.This technology can significantly improve the power conversion efficiency.The PFM+PWM working mode and"period skipping"function is used to enable the power supply to obtain better results under different power output conditions.High overall efficiency.A method for applying this technology is proposed to low-voltage input and output DC/DC power supplies.Through a series of optimizations,the NCP1207 chip has been used to achieve a conversion efficiency of more than 80%.Compared with push-pull topology and traditional single-ended flyback topology,the quasi-resonant flyback topology has obvious advantages in conversion efficiency,simple structure,and the theoretical value of design calculation is closer to the actual debugging result.

关 键 词：电流临界连续模式 准谐振 跳周期 NCP1207 超高效率 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]