Reverse current flow through an IGBT

out

condition?

I don't think so.

They make IGBTs with integral reverse diodes for this purpose.

Tim

-- Deep Fryer: A very philosophical monk. Website @

Yup, appears so. From what I've read there is the equivilent of a forward biased diode in series with the collector pin. The antiparallel diode goes around this so the reverse current voltage drop is entirely dependant on the voltage drop of the antiparallel diode.

I'm looking at ways to reduce this voltage. Looks putting a better antiparellel doide in parallel is the only way.

thanks Tim

The entire advantage to IGBTs is their low Vce(sat), which is only a few diode drops typical. This is of no advantage to lower voltages (under

So, what I'm saying is, why are you interested in an IGBT when you seem to be looking for a MOSFET?

What specs are you looking for in saturation voltage, current, peak voltage capacity, rise/fall time, etc.?

Tim

-- Deep Fryer: A very philosophical monk. Website @

Nobody does it this way in practice, N channel devices are almost allways used.

the effect is similar to a

bottom

er

There are NO P channel igbt's.

Toshiba GT20D201, for one.

-250V, 20A

-- "Electricity is of two kinds, positive and negative. The difference is, I presume, that one comes a little more expensive, but is more durable; the other is a cheaper thing, but the moths get into it." (Stephen Leacock)

Sure there are. At least, I recall seeing some listed in an older issue of Mouser's catalog. Hmm, don't see any at the usual suspects.

Certainly, not many people _use_ them.

Tim

-- Deep Fryer: A very philosophical monk. Website @