Emerson Network Power Co., Ltd.

Xingzhu Zhang

Xiaopeng Dong

The present invention provides a self-driving circuit of a low voltage, large current, and high power density DC/DC converter. The converter comprises a transformer, power MOS transistors (S), output rectification portion (SRb 1, SR), filter portion and demagnetizing portion. The first configuration of the self-driving circuit consists of Da, Ra, Ca, Qa for self-driving SRand the second configuration consists of Da, Ra, Sa, a delay driving circuit and an isolation differential circuit, for self-driving SRThe self-driving circuit of the present invention may reduce the cross-conductive loss, and increase the converting efficiency.

Self-driving circuit for a DC/DC converter

The present invention provides a self-driving circuit for DC/DC converter of a low voltage, high current, and high power density. The converter comprises a transformer, output rectification portion SR and voltage clamping. The first configuration of the self-driving circuit consists of resisters R , R , capacitors C , C , transistors Q , Q ; and the second configuration consists of Da, small power MOS transistor SRa, an auxiliary winding Nsa, a delay driving circuit and a isolating differential circuit. The self-driving circuit of the present invention may reduce the cross-conductive loss, and increase the converting efficiency.

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Shenzhen, China

Xingzhu Zhang