V<sup>2</sup>C控制Buck变换器稳定性分析

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Abstract The operation principles of peak current controlled, V² controlled, and V²C controlled buck converter operating in continuous conduction mode (CCM) are analyzed and compared respectively. It is pointed out that V²C control is essentially a kind of control technique by utilizing peak capacitor voltage and inductor current, quite similar to peak current control. It is also pointed out that both peak current control and V² control are special case of V²C control. Stability of V²C controlled Buck converter operating in CCM is analyzed in time-domain and frequency-domain respectively. Sub-harmonic oscillation of V²C controlled Buck converter operating in CCM when duty ratio is higher than 0.5 (D> 0.5) can be eliminated by using slope compensation. Simulation and experiment results are given to verify our theory analysis.

Key words： Buck converter VC control V control peak current control stability

Received: 28 February 2009 Published: 07 March 2014

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TM46

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	Articles by authors
	Zhou Guohua
	Xu Jianping
	Mi Changbao
	Jin Yanyan

Cite this article:

Zhou Guohua,Xu Jianping,Mi Changbao等. Stability Analysis of V²C Controlled Buck Converter[J]. Transactions of China Electrotechnical Society, 2011, 26(3): 88-95.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2011/V26/I3/88

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