Gate power supply circuit

Details Gate power supply circuit Gate power supply circuit

H - Electricity

02

M

H02M 7/217 (2006.01) H02M 1/08 (2006.01) H02M 1/096 (2006.01) H03K 17/0814 (2006.01)

Patent

CA 2116394

A gate power supply circuit including a switching device and a gate drive circuit connected to the switching device for generating a gate signal to be supplied to a gate of the switching device. The gate power supply circuit further includes a first series circuit of a first capacitor and an inductor, connected in parallel with the switching device, and a second series circuit of a first diode and a second capacitor, connected in parallel with the inductor. The gate drive circuit is connected to the second capacitor to receive energy stored in the second capacitor as power source for the gate drive circuit.

Circuit d'alimentation commandé par gâchette, comprenant un dispositif de commutation et un circuit d'attaque de gâchette connecté au dispositif de commutation pour produire un signal d'attaque de gâchette destiné à une gâchette du dispositif de commutation. Le circuit d'alimentation commandé par gâchette comprend en outre un premier circuit série d'un premier condensateur et une bobine, connectée en parallèle avec le dispositif de commutation, ainsi qu'un deuxième circuit série d'une première diode et un deuxième condensateur, connecté en parallèle avec la bobine. Le circuit d'attaque de gâchette est connecté au deuxième condensateur, l'énergie emmagasinée dans celui-ci lui servant de source d'alimentation.

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