Styx
Active Member
I am working on an active gate control for a IGBT : 1000A device, 1200V.
This IGBT is using infineon die and its IGBT switches extreamly fast
From day1 I have been tasked with building an active-gatecontrol
Basically for a link of 350V and switching 600A I am getting 300V overshoot (ie 650V at Vce). Although the device is rated at 1200V this massive overshoot needs to be slugged.
Usual method is increase gate resistor but we need it to switch as fast as possible (turn-off in 400ns for 350v,600A), plus the device already has swithcing losses of 1Kw we cannot have that much more
I have sucessfully measuring the dv/dt of Vce and am in the process of modifying my output stage of the 1st iteration of the gateboard.
I need to use a P-type MOSFET as a linear amplifier. It needs to be able to source 11A peak, switching freq abt 10Mhz (main switching freq is 10Khz but the active side needs to gatevoltage shape very fast).
I have found the MOSFET needed (power handling, current rating...) I am after any advice on using a MOSFETin its linear regon.
Thanks
This IGBT is using infineon die and its IGBT switches extreamly fast
From day1 I have been tasked with building an active-gatecontrol
Basically for a link of 350V and switching 600A I am getting 300V overshoot (ie 650V at Vce). Although the device is rated at 1200V this massive overshoot needs to be slugged.
Usual method is increase gate resistor but we need it to switch as fast as possible (turn-off in 400ns for 350v,600A), plus the device already has swithcing losses of 1Kw we cannot have that much more
I have sucessfully measuring the dv/dt of Vce and am in the process of modifying my output stage of the 1st iteration of the gateboard.
I need to use a P-type MOSFET as a linear amplifier. It needs to be able to source 11A peak, switching freq abt 10Mhz (main switching freq is 10Khz but the active side needs to gatevoltage shape very fast).
I have found the MOSFET needed (power handling, current rating...) I am after any advice on using a MOSFETin its linear regon.
Thanks