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Level 1
Level 1
Hey all,
is it mandatory to use -5V during turn-off? Can 0 V be used?
1 Solution

## Re: Question about the voltage-class

Moderator
Moderator
I believe you are asking the gate voltage window.

For the gate voltage, please follow the application note. 0V is recommend for the discrete devices.

https://www.infineon.com/dgdl/Infineon-Guidelines_for_CoolSiC_MOSFET_gate_drive_voltage_window-Appli...
4 Replies

## Re: Question about the voltage-class

Moderator
Moderator
I believe you are asking the gate voltage window.

For the gate voltage, please follow the application note. 0V is recommend for the discrete devices.

https://www.infineon.com/dgdl/Infineon-Guidelines_for_CoolSiC_MOSFET_gate_drive_voltage_window-Appli...

## Re: Question about the voltage-class

Moderator
Moderator
Also for the Easy modules 0 V can be used in case simplicity of the design has priority vs. switching speed. With a higher turn-on gate resistor the dV/dt can be reduced to a level that also modules - inspite of their longer internal and external gate connections - can be operated with 0 V. In some applications - like drives - dV/dt needs to be limited anyhow to avoid adverse effects on the machine windings and bearings.

## Re: Question about the voltage-class

Moderator
Moderator
YUAN wrote:
I believe you are asking the gate voltage window.

For the gate voltage, please follow the application note. 0V is recommend for the discrete devices.

https://www.infineon.com/dgdl/Infineon-Guidelines_for_CoolSiC_MOSFET_gate_drive_voltage_window-Appli...

Dear YUAN,
I had a look at the application note AN2018-09 and i am not sure if the the IMZ120R030M1H is able to operate with a gate voltage of +18/-5. Is it safe to operate the device for a reasonable amount of time?