High Side Mosfet Driver Pulse Transformer

Its low buffer rds on can.

High side mosfet driver pulse transformer.

High side driver supply bootstrap supply is requested. For more information see the overview for mosfet and igbt gate drivers product page. The yellow trace shows the voltage drop when the mosfet turns on and then when it closes the voltage climbs again and oscillates. Circuit block diagram it can therefore directly drive a low side switch and through a pulse transformer an high side switch.

The td300 is a three channel mosfet driver with pulse transformer driving capability. A pulse transformer is an isolation transformer which can operate at speeds often needed for half bridge gate driver applications up to 1 mhz. The blue trace is the gate and shows the 1 duty cycle i was using at this point. Gate charge of the mosfet to be driven bias voltage allowed ripple and discharge during switching switching frequency maximum high side pulse width minimum low side pulse width.

High side isolation 600 v is reached within the silicon. Procedure for ground referenced and high side gate drive circuits ac coupled and transformer isolated solutions are described in great details. A gate driver ic can be used to deliver the high currents needed for charging the capacitive mosfet gates. It has been optimized for both capacitive load drive and pulse transformer demagnetization.

Matched propagation delay between high and low side drive prevents any unbalanced transformer usage. Noise immunity negative voltage robustness of the high side driver.