Hello with reference to the attached graphic (snapshot of a section of Fairchild/On semiconductor HGTG27N120BN IGBT datasheet), I noticed this test circuit has one input (Vge) and two traces output (Vce and Ice). The graphic was black and white, and I am trying to understand which trace is doing what ...
Is Vce waveform rectangular in shape?
Is Ice different over the two cycles? Why?
In the accompanying test circuit, if the IGBT was left in an "active" state with current flowing between C and E, what are the risks in doing so?
By the way, what do the turns "Switch On of a IGBT mean: "closed" (C not connected in pathway to E) or "open" (C connected in pathway to E).
What is a typical value for Vge -- would that be 15V or can it be lower ?
Lastly, what is the recommended initial configuration of Vge signal to that IGBT in that test circuit - for safety? High, or Low - and does anyone have tips for designing to ensure that we don't startup in a non-safety state?
Thanks.
N3RDX