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Registered Member #15
Joined: Thu Feb 02 2006, 01:11PM
Location:
Posts: 3068
I've been doing some volunteer work with for the Venture Crew high school group at my company where we are presently building (2) DRSSTC systems. Anyways, here is a high power CM300/CM600 gate driver design which works extremely well if anyone is interested.
Gate voltage is 20V, and gate bias at -10V. These can be changed accordingly by using whatever transformer / zener diode combination you want.
Use IXYS 30A Gate Drivers and powered from 50/60Hz isolated power transformers (which is easy to wind your own)
Attached it PSPICE Sim File, PDF Schematic, and ExpressPCB file
Registered Member #56
Joined: Thu Feb 09 2006, 05:02AM
Location: Southern Califorina, USA
Posts: 2445
How come your venture crew gets to build gigantic DRSSTCs?
All mine does is like have parties and launch HPR rockets
In any case, for those of us who haven't had the pleasure of learning pspice, do you have some nice pictures of the gate drive waveforms? A real scope capture would be nice...
Registered Member #146
Joined: Sun Feb 12 2006, 04:21AM
Location: Austin Tx
Posts: 1055
Remember, all your doing is charging up a cap
Well, not really. The voltage to charge relationship is not linear. Im not really telling you this, Dan, but id rather not have some misconception spread that the gate is really just simply a capacitance. Gate drive waveforms look significantly different with a real device than something like a capacitor, and as usual, the "devil is in the details".
Registered Member #15
Joined: Thu Feb 02 2006, 01:11PM
Location:
Posts: 3068
Steve Ward wrote ...
Remember, all your doing is charging up a cap
Well, not really. The voltage to charge relationship is not linear. Im not really telling you this, Dan, but id rather not have some misconception spread that the gate is really just simply a capacitance. Gate drive waveforms look significantly different with a real device than something like a capacitor, and as usual, the "devil is in the details".
Actually, we were only discussing the PSPICE simulation where the gate is modeled as a single capacitor.
Banned on 3/17/2009. Registered Member #487
Joined: Sun Jul 09 2006, 01:22AM
Location:
Posts: 617
I have a copy but for the life of me cant figure out where or how to add test equipment among other things or to simulate. It has like 50 different programs that open for every different function. I couldn't find a tutorial. Any good ones you know of?
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CM300/CM600 High Power Gate Driver - Complete Design with PCB
