高頻開關電源控制方案設計

摘要：高頻開關電源控制回路傳統的方法是采用電壓模式單閉環控制，這種控制方法響應較慢，也不能對功率器件進行實時電流限制。為了實現輸出電壓電流均可控，通常采用電流模式控制，常用電流模式控制有峰值電流控制法和平均電流控制法。本文對高頻開關電源平均電流模式控制方案設計進行探討。 敘詞：高頻 控制 設計 Abstract：Voltage-mode single closed-loop control is the usual way to control loop in high-frequency switch power supply control, which is relatively slow in response and also cannot restrict power components from real-time current. Voltage-mode control is usually used to make both out-put voltage and current controllable and general voltage-mode control includes peak current control and average current control. This paper discusses design scheme for average current control in high-frequency switch power supply. Keyword：High frequency, Control, Design