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Charge control for zero-voltage-switching multiresonant converter

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3 Author(s)
Tang, W. ; AT&T Bell Labs., Mesquite, TX, USA ; Leu, C.S. ; Lee, F.C.

The operation of zero-voltage-switching multi-resonant power converters (ZVSMRCs) limits the use of peak current-mode control. The charge control technique is found applicable to ZVSMRCs for improving dynamic performance. Charge control compares the total charge of the switch current to the control voltage to modulate the switching frequency. Since the charge of the switch current of the forward ZVSMRCs is proportional to the input voltage, charge control provides a fast inner loop and offers excellent transient response. Charge control also provides the possibility to achieve current sharing for ZVSMRC parallel applications

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Power Electronics, IEEE Transactions on  (Volume:11 ,  Issue: 2 )