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標題: About integrator in Ripple Mode [打印本頁]

作者: allentel 時間: 2009-10-26 03:08 PM
標題: About integrator in Ripple Mode
有做過ripple mode么？

大廠例如Maxim爲了修正output accuracy加入integrator，
請問各位這個integrator該如何理解啊？

O(∩_∩)O謝謝

作者: happybull 時間: 2009-12-7 12:11 PM
Integrator means that this is a high gain system instead of a low gain system.
Maxim have many dcdc converters without any type compensation except output cap, which is called load line . The way of compensation is output pole dominate a low gain system.

Integrator is a high gain system with type II compensation ,which make output voltage accuracy better.

作者: woshixiaocao 時間: 2009-12-27 02:55 PM
It sounds good!there is their secret.

作者: patrick02046 時間: 2011-9-11 10:26 AM
Ripple mode是指使用 voltage ripple 或 current ripple產生系統gate drive信號的模式。舉例:電壓遲滯控制、電流遲滯控制。

積分器在此有兩個作用:1.提高系統的loop gain的dc 增益以減少steady state error。2.積分器也是一種low pass filter，所以也可以濾一些輸出電壓的高頻雜訊。 (PS積分器加上去後還要考慮系統補償問題)

作者: harryzhuge 時間: 2012-2-7 03:28 PM
大大们有没有关于integrator 的资料啊，能不能和小弟分享一下~小弟急求啊```

作者: patrick02046 時間: 2012-2-9 01:19 PM
本帖最後由 patrick02046 於 2012-2-9 01:21 PM 編輯

回復 5# harryzhuge

參考一下檔案內的 "B. Enhanced Dc Regulation with a Single Feedback Path"

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