Power mosfet gate driver circuit

Details Power mosfet gate driver circuit Power mosfet gate driver circuit

H - Electricity

03

K

323/4

H03K 17/687 (2006.01) H03K 17/691 (2006.01)

Patent

CA 1311270

- 7 - POWER MOSFET GATE DRIVER CIRCUIT Abstract A MOSFET gate driver circuit reduces the noise susceptibility of a MOSFET switch by utilizing dual drive paths to apply turn-on and turn-off bias signals to the gate of the MOSFET. Drive pulses are coupled to the MOSFET switch via a pulse transformer which has two serially connected secondary windings. Turn on pulses are coupled by a diode from the first secondary to the MOSFET gate. Turn-off pulses are coupled via the second secondary to a control MOSFET which is turned on by a turn-off pulse and remains on in order to keep the gate of the MOSFET switch to a hold off voltage.

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