How to introduce dead time in a IGBT circuit

[k2n2a2]

Hi,

I am building a half H bridge consisting of two IGBTs and two gate drivers.
both IGBTs are driven from one PWM source, one IGBT conducts when the PWM is high while the other is off, then the second IGBT conducts when the PWM is low while the first is off.
What can I do to introduce dead time in the circuit to prevent cross conduction (both IGBTs on at the same time)

Thank you

 

[BradtheRad]

Will there be a coil with current going through it during the dead time?

 

[k2n2a2]

No, there are no coils in the design. The signal goes from the gate driver directly to the igbt gate.

 

[chuckey]

How about if you put a resistor shunted by a diode in series with the feed? (cathode to driver chip). So when the driver chip goes to a 1, the input capacity and the series R, delay the rise time of the edge to your IGBT, but when the driver goes to a 0, it sucks the voltage out of the capacity via the diode, providing a much faster discharge path, so the trailing edge of the pulse is not delayed.
Frank