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This paper presents a new non-isolated asymmetrical buck converter. The transformer is used to extend the extremely low duty-cycle of a conventional buck converter. The turn-off loss can be significantly reduced due to the extension of duty-cycle and there is no turn-on loss owing to zero-voltage turn-on condition. At the same time, the voltage stress over the synchronous rectifier (SR) MOSFETs is...
A new current-source gate drive circuit is proposed for a synchronous buck voltage regulator (VR). The proposed driver can drive two MOSFETs independently with different drive currents for optimal design. Furthermore, the new drive circuit can achieve 1) significant switching loss reduction; 2) gate energy recovery; 3) reduced body diode losses and reverse recovery losses; 4) ZVS of all the drive...
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