High Side Mosfet Driver Pulse Transformer

It has been optimized for both capacitive load drive and pulse transformer demagnetization.

High side mosfet driver pulse transformer.

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. Its low buffer rds on can. Here s a scope grab showing the pulse from the driver and the voltage on the mosfet side of the transformer.

A gate driver ic can be used to deliver the high currents needed for charging the capacitive mosfet gates. High side isolation 600 v is reached within the silicon. For more information see the overview for mosfet and igbt gate drivers product page. A pulse transformer is an isolation transformer which can operate at speeds often needed for half bridge gate driver applications up to 1 mhz.

High side driver supply bootstrap supply is requested. Noise immunity negative voltage robustness of the high side driver. The td300 is a three channel mosfet driver with pulse transformer driving capability. Matched propagation delay between high and low side drive prevents any unbalanced transformer usage.

Procedure for ground referenced and high side gate drive circuits ac coupled and transformer isolated solutions are described in great details. 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.