Gate Drivers: Separate source and sink outputs

Thread Starter

Xavier Pacheco Paulino

Joined Oct 21, 2015
728
Hi,

I found the circuit attached in the datasheet of the gate driver 1EDI60N12AF. I've seen other gate drivers which offer separate source and sink outputs. What can really be achieved by doing this separation in comparison with those which don't offer this feature? I mean, I guess you manage to control the charging and discharging current, but what are the pros and cons of this? When is this feature truly recommended?
 

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Thread Starter

Xavier Pacheco Paulino

Joined Oct 21, 2015
728
Another question:

The datasheet says: The 1EDI60N12AF provides output currents of at least 6 A at separated output pins.

My 12V supply max current is 5A. So, I should certainly select a resistor to limit that current.
 

AlbertHall

Joined Jun 4, 2014
12,623
The driver output current will be only in short pulses while the gate capacitance charges/discharges so use plenty of decoupling on the supply close to the driver chip - perhaps 100n and 100uF - and this will supply the pulse current without bothering the power supply.
 
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