interesting new IGBT

• To: tesla-at-poodle.pupman-dot-com
• Subject: interesting new IGBT
• From: Tesla List <tesla-at-stic-dot-net>
• Date: Sat, 10 May 1997 08:38:17 -0500
• Approved: tesla-at-stic-dot-net

Subject: interesting new IGBT
  Date:  Fri, 9 May 1997 22:50:46 -0400
  From:  104521.363-at-compuserve-dot-com
    To:  "INTERNET:tesla-at-pupman-dot-com" <tesla-at-pupman-dot-com>


[snip]
announcement  from Harris corp for the HGTP7N60N3 family - they say they
are rated at
7amps  600 volts with losses in the 50 to 100 Khz range
[snip]


Those are individual (underated) peak values which are never applied
simultaneously.  Moreover, IGBT's have a long current tail during
turn-off
and this is the mechanism for limiting their speed.  However, there are
zero-voltage/zero-current switching schemes which can partially get
around
this tail problem.  The IEEE transactions on power electronics has had
about a dozen articles in the last year or two on this scheme.  In
particular IEEE transactions on power electronics Vol 11 number 4 (July
1996) starting page 622.  On page 626, the author describes using
IRGPC40U
IGBT's rated at 10-20 khz but driven at 100 khz due to the afore
mentioned
zero voltage/current switching.

kyle

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