Depletion Mode Igbts - Peak Electronics DCA75 User Manual

Atlas DCA Pro User Guide

Depletion Mode IGBTs

Like MOSFETs, IGBTs are available as enhancement
mode and depletion mode types.
Depletion mode IGBTs are characterised by the fact that
current can flow between the collector and emitter when there is zero voltage
across the gate-emitter terminals.
For an N-Channel depletion mode IGBT, the device can only be turned off
fully if the gate terminal is taken more negative with respect to the emitter lead.
In this example we have an N-
Channel depletion mode IGBT with
no free wheeling diode.
Note the negative gate threshold
voltage, characteristic of a depletion
mode device.
N-Ch Depletion
mode IGBT
Red-E Green-G Blue-E
Gate threshold
V GE ( on )=-3.955V
at I C =5.00mA
Page 24
April 2015 – Rev 1.4
C
G
E