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MOSFET (Si/SiC) Forum Discussions

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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
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1 Solution
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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

View solution in original post

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1 Reply
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
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