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MOSFET (Si/SiC) Forum Discussions

User17665
Level 1
5 questions asked First question asked First reply posted
Level 1
How similar is the CoolMOS MOSFET to the CoolSiC MOSFET?
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electricuwe
Moderator
Moderator 5 sign-ins 25 replies posted 10 solutions authored
Moderator
Hi Gyro Gearloose,

one main difference is the voltage range, where such devices are available. The main domain of CoolMOS is 650 V, with some parts up to 950 V. Contrary CoolSiC Mosfet can be designed also for much higher voltages.

The lower Qrr of CoolSiC Mosfet makes the suitable for halfbridge applications with hard switching, whereas the main domain of CoolMOS are single switch applications like PFC or soft-switched converters.

Best regards,
electricuwe

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User17674
Level 3
10 replies posted 5 replies posted 5 questions asked
Level 3
Fast-switching devices like Si super-junction MOSFETs and CoolSiC™ MOSFET have many similar properties, e.g. temperature-independent switching losses, increase of Ron with temperature, etc.
Unlike the CoolMOS™ device, the CoolSiC™ MOSFET benefits from negligible Qrr and the very small Qoss
Application notes describing design measures to manage high switching speeds can also be used for CoolSiC™ MOSFETs.
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electricuwe
Moderator
Moderator 5 sign-ins 25 replies posted 10 solutions authored
Moderator
Hi Gyro Gearloose,

one main difference is the voltage range, where such devices are available. The main domain of CoolMOS is 650 V, with some parts up to 950 V. Contrary CoolSiC Mosfet can be designed also for much higher voltages.

The lower Qrr of CoolSiC Mosfet makes the suitable for halfbridge applications with hard switching, whereas the main domain of CoolMOS are single switch applications like PFC or soft-switched converters.

Best regards,
electricuwe
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