Terry's DRSSTC - IGBT Drive Cards

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Original poster: Terry Fritz <teslalist@xxxxxxxxxxxxxxxxxxxxxxx>

Hi All,

Tonight I bench tested the last part of my DRSSTC.  Finally!!

These are the IGBT drive cards mounted on top of each other to save a 
little space:

http://drsstc.com/~terrell/pictures/IGBT-DriveCards.JPG

There are four circuits like this:

http://drsstc.com/~terrell/schematics/GateDrive.gif

http://drsstc.com/~terrell/pcbart/GateDrive.gif

So I fired one up with a bench power supply under no load:

http://drsstc.com/~terrell/pictures/IGBT-DriveCards-01.gif

Puts out a nice solid square wave to about 27+ volts.  The output turns on 
to the 5 volt level in about 180nS and the 27V rise time is in the 120ns range:

http://drsstc.com/~terrell/pictures/IGBT-DriveCards-02.gif

The turn off is much faster with about 60nS delay and 40nS fall time:

http://drsstc.com/~terrell/pictures/IGBT-DriveCards-03.gif

Do note again that there is no load in these tests, but all looks fine :-))
The IC socket and the big cap are a tight fit and a label was "S" for 
source instead if "E" for emitter, but otherwise the board layout was fine ;-)

Next I will wire it all together on the bench to see if all the boards work 
well together and then comes mounting it all up!!

Cheers,

	Terry