hello everyone,may i ask about IGBT.
i just do a simple testing,i expect the output is like the graph i drawn,the load i put is a 800W resistive heater.but i burn that IGBT in 1 second after switch on.may i know what is the mistake? i had turn off the IGBT before switching it into 240Vac,so i expect the initial state is no output at all.before i turn on the 240Vac switch,the gate terminal of IGBT i leave it float.
the IGBT is SGP20N60,it claim that it could carry 20A.here is the datasheet:
http://www.farnell.com/datasheets/42.pdf
may i do switching with IGBT without snubber circuit?
now after it burn,the IGBT become short circuit in every terminal,regardless any direction.
may i know what is my biggest mistake please?i had try to switch 20Vdc device,it work ok when 20Vdc,but when i try to switch 240Vac it spoil in one second.infact i instantly smell very little burn smell,then i discover its already spoiled,spoiled in the sense that every leg of the IGBT is shorted.
can anyone kindly share your experience in IGBT please? i couldn't afford to try and error anymore because IGBT is quite expensive.
i thank everyone in advance.
i just do a simple testing,i expect the output is like the graph i drawn,the load i put is a 800W resistive heater.but i burn that IGBT in 1 second after switch on.may i know what is the mistake? i had turn off the IGBT before switching it into 240Vac,so i expect the initial state is no output at all.before i turn on the 240Vac switch,the gate terminal of IGBT i leave it float.
the IGBT is SGP20N60,it claim that it could carry 20A.here is the datasheet:
http://www.farnell.com/datasheets/42.pdf
may i do switching with IGBT without snubber circuit?
now after it burn,the IGBT become short circuit in every terminal,regardless any direction.
may i know what is my biggest mistake please?i had try to switch 20Vdc device,it work ok when 20Vdc,but when i try to switch 240Vac it spoil in one second.infact i instantly smell very little burn smell,then i discover its already spoiled,spoiled in the sense that every leg of the IGBT is shorted.
can anyone kindly share your experience in IGBT please? i couldn't afford to try and error anymore because IGBT is quite expensive.
i thank everyone in advance.
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