Re: Self-Resonant Driver Boards (DRSSTC, ISSTC, etc...) Bulk Purchase ? ? ? ? Anyone ? ? ?

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Eastern Voltage Research Corporation" <dhmccauley-at-easternvoltageresearch-dot-com> 

Really nothing to do with pulse width but more a concern of duty cycle.

PRF of the pulse (interruptor) frequency has little effect as its such a low
frequency to begin with.

I wouldn't run more than a 10-15% duty cycle using the UCC drivers and those
large FAIRCHILD IGBTs.
You have four UCC drivers (two 321 paralleled, and two 322's paralleled) and
driving four (4) 15-20nF
gate loads with the fairchild IGBTs.

If you ran 100% duty cycle at 100kHz the dissipations on the UCC chips would
be very high and burn them up very quickly.

Dan



 > What would be an example of too wide pulse width and too high PRF which
 > would damage the UCC drive chips.