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Voltage vs Heating ?

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marko
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Voltage vs Heating ?

Hi, 

Im testing VESC 4.12 and have some odd behavior with heating, does the battery voltage affect heating of the mosfet?
I have tried supply 20V and 40V.On 40 volts it get much hotter.
Test was done with 0% duty cycle.(FOC)

Device is working normally, just wonder why the voltage affects the temperature, especially when the duty is 0% and there is no current or is very small.

Can someone explain why is that?

Thanks

moto_guy
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Joined: 2019-02-20 11:08
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In my experience , let power supply  below 20V, do not exceed 25V. 

I always get big trouble in high voltage ,especially the DRV chip ,using this chip is the biggest failure for VESC project, because  of  its broken.