Re: IGBTs are pretty fast

Terry Given wrote...
>
>> I like these transistors more than the MOSFETs in that you can
>> see the discrete transition as current passes through zero; the
>> transistor won't conduct backwards, so the reverse drop will
>> always be that of the co-packed FRED.  Likewise, the forward
>> bias is always a couple diode drops.

 That may be an attractive debugging tool, but it's far better to
 have the reverse current flow through a conducting FET channel
 than a diode with its reverse-recovery delay and snapoff after
 shutoff.  Unfortunately at high currents and voltages, MOSFETs
 simply cannot keep pace with IGBTs in conductance capabilities.
 That's why you will find them in this type of application.


-- 
 Thanks,
    - Win
.

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