Ramakrishnan VU2JXN on Nostr: I tried this again, this time, filled the thermal vias with solder to improve the ...
I tried this again, this time, filled the thermal vias with solder to improve the thermal resistance. Now, the heatsink gets a lot hotter than it was before, but the device gets pretty hot too and because of the thermal runaway, the gate current keeps increasing. I think, the heat transfer from the mosfet to lower part of PCB and hence to the heatsink is not efficient.. I am clueless on how to improve it. Not sure if bigger heatsink would help here. Most likely not.
Published at
2024-01-15 02:37:25Event JSON
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