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## what the best way to calculate Rg gate driver for Mosfet

Not applicable
I need to drive a MOSFET IPW90R120C3(datasheet:http://www.kynix.com/uploadfiles/pdf8798/IPW90R120C3.pdf ) from Infineon here the Specification of MOSFET

VDS @ TJ=25°C 900 V
Rdson @ TJ=25°C : 0.12ohm
Qg = 270nC
Specification of driver IR2110

Isource: 2A
Isink : 2A
VOUT 10 - 20V
ton/off (typ.) 120 & 94 ns
Driver supply : 15V
The switch frequency Fsw= 50KH

what the best way to calculate the resistance Rg to drive proprely the MOSFET ? best regards
1 Solution
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## Re: what the best way to calculate Rg gate driver for Mosfet

Not applicable
1. According to the Driver Supply 15V, and the sink/source current 2A, the minimum gate resistor is 15/2=7.5 Ohm
2. For sepicified calculation, you could refer to the following application note for selecting the gate resistor: https://www.infineon.com/dgdl/Infineon-EiceDRIVER-Gate+resistor+for+power+devices-AN-v01_00-EN.pdf?f...
3. Infineon Designer is an online Simulation tool, where you could quickly simulate your circuit, you could see the H-Bridge of IR2110 Simulation through this link (although this is not half-Bridge, you could see the behavior of this driver): https://design.infineon.com/tinademo/tina.php?path=EXAMPLESROOT%7CINFINEON%7CApplications%7CIndustri...
Please watch the Video in the attached if you are interested in how to change the parts in the circuit and simulate it using Infineon Designer.

Huixian
1 Reply
Attachments are accessible only for community members.

## Re: what the best way to calculate Rg gate driver for Mosfet

Not applicable
1. According to the Driver Supply 15V, and the sink/source current 2A, the minimum gate resistor is 15/2=7.5 Ohm
2. For sepicified calculation, you could refer to the following application note for selecting the gate resistor: https://www.infineon.com/dgdl/Infineon-EiceDRIVER-Gate+resistor+for+power+devices-AN-v01_00-EN.pdf?f...
3. Infineon Designer is an online Simulation tool, where you could quickly simulate your circuit, you could see the H-Bridge of IR2110 Simulation through this link (although this is not half-Bridge, you could see the behavior of this driver): https://design.infineon.com/tinademo/tina.php?path=EXAMPLESROOT%7CINFINEON%7CApplications%7CIndustri...
Please watch the Video in the attached if you are interested in how to change the parts in the circuit and simulate it using Infineon Designer.

Huixian