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tesla500 · 03-30-2011, 03:20 AM

Hi JR,

With the fully isolated control-on-the-12V-side approach, I'm hoping noise won't be too bad there. The main area I'm worried about are the isolated supplies for the high side gate drives, those are slewing up and down fast, the traces from the power supply to the drivers could work as antennas radiating noise into the enclosure.

I think the base plate will be thick enough that cooling channels could be milled into it for water cooling. The thermal mass will be needed so handle the high dissipation during short high power bursts. Having the heatsink on the top would be very useful for convection cooling, but I don't believe it would be of too much help with forced air or water cooling. Heat doesn't rise in solids.

I'm using Altium Designer for the layout. I've uploaded a PDF of the (very incomplete) schematics to:

ww w3.telus.net/tesla/Incomplete_Inverter_Schematics.pdf
(remove the space in the 'w's)

Regards,
David

03-30-2011, 03:20 AM	#504 (permalink)
tesla500 EcoModding Lurker Join Date: Mar 2011 Location: Vancouver, BC Posts: 5 Thanks: 0 Thanked 4 Times in 2 Posts	Hi JR, With the fully isolated control-on-the-12V-side approach, I'm hoping noise won't be too bad there. The main area I'm worried about are the isolated supplies for the high side gate drives, those are slewing up and down fast, the traces from the power supply to the drivers could work as antennas radiating noise into the enclosure. I think the base plate will be thick enough that cooling channels could be milled into it for water cooling. The thermal mass will be needed so handle the high dissipation during short high power bursts. Having the heatsink on the top would be very useful for convection cooling, but I don't believe it would be of too much help with forced air or water cooling. Heat doesn't rise in solids. I'm using Altium Designer for the layout. I've uploaded a PDF of the (very incomplete) schematics to: ww w3.telus.net/tesla/Incomplete_Inverter_Schematics.pdf (remove the space in the 'w's) Regards, David Last edited by tesla500; 03-30-2011 at 11:28 AM..