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Technical assistance needed in designing an inverter using Ganfet

Technical assistance needed in designing an inverter using Ganfet

Technical assistance needed in designing an inverter using Ganfet

(OP)
Hello, I am in need of technical assistance in designing a solar inverter using gallinium nitride fet. Thanks

RE: Technical assistance needed in designing an inverter using Ganfet

Which particular aspect are you struggling with? And why the insistance on a Gallium Nitride FET?

RE: Technical assistance needed in designing an inverter using Ganfet

Do you have a schematic for anyone to go off of?

RE: Technical assistance needed in designing an inverter using Ganfet

(OP)
In the area of MPPT DC/DC converter stage. Redesigning the converter to work with ganfet is my priority.
i will come up with a schematic soon. Thanks

RE: Technical assistance needed in designing an inverter using Ganfet

You might want to try an n-type MOSFET and see if that works better.

RE: Technical assistance needed in designing an inverter using Ganfet

GanFETs seem to be ideally suited for high frequency and ultra-high current applications. The OP hasn't really indicated that their application warrants this technology, unless it's a class assignment.

TTFN (ta ta for now)
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RE: Technical assistance needed in designing an inverter using Ganfet

Google says that there are bespoke Gate Driver ICs for GANFETs. So inserting them into an existing design should be "straightforward". smile

Beware of more / higher frequency EMI from the corners of the faster switching speed. The device might fail EMI qualification testing if this wasn't addressed during the detailed design and prototyping.

Also, if the designer wishes to crank-up the switching frequency to take advantage of the faster transistors, then the main inductor might have to be redesigned to be optimum.

If you're using an H-bridge Buck-Boost design (a la LTC3780, which is the coolest thing ever), then all four of your new transistors will be equally fast. But if you're using a simpler design with a diode and then you crank up the speed, then check diode speed implications.

Disclaimer: I've not been anywhere near this topic hands-on, so these points are worth what you pay for them. Just suggestions based on my other experiences.

It sounds like a fun project. Good luck.

RE: Technical assistance needed in designing an inverter using Ganfet

Wide band gap devices are not the future. They are here NOW!

RE: Technical assistance needed in designing an inverter using Ganfet

(OP)
I have actually seen a demo board that uses ganfet for AC inverter, thinking of getting it myself.

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