IC693MDL930CA（1）按功能

分為：降壓斬波電路、升壓斬波電路、升降壓斬波電路、Cuk斬波電路、Sepic斬波電路和Zeta斬波電路

（2）按調(diào)壓控制方式

（a）脈沖寬度調(diào)制（PWM）：控制脈沖周期不變，改變脈沖寬度調(diào)壓。常用。故斬波控制也稱為脈寬調(diào)制

（b）脈沖頻率調(diào)制（PFM）：控制脈沖寬度不變，改變脈沖周期調(diào)壓。

IC693MDL930CA 

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