主板Buck变换器电压环补偿网络设计

电源技术属于电力电子技术的范畴,是集电力变换、现代电子、自动控制等多学科于一体的边缘交叉技术,现今已广泛应用到工业、能源、交通、信息、航空等领域。开关电源是整个电源技术中至关重要的部分,其中的PWM电源调整器的反馈补偿网络,是开关电源的重要研究课题,本文将针对PWMDC-DCBuck变换器电压环补偿网络设计做出了研究和应用举例。

Design Compensation Networks for Voltage Mode Buck Regulators

PWM synchronous and non- synchronous buck regulators are used in Motherboard circuit design which have three basic blocks that contribute to the closed loop system.As buck conwertor has LC double poles which cause the system unstable,a good compensation of the system will allow for a predictable bandwidth with unconditional stability. In motherboard ,Type II or Type III compensation network can properly compensate the system.Using the simulation software can get BODE plot which provide all the information of phase margin, bandwidth and system gain.