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ZUBoard 1CG PCB is overheating near the power lines

Ravi_V

I have observed overheating (60 degrees) on the ZUBoard 1CG PCB around the power lines area. Has your team noticed this earlier?

  • There is a rail that gets warm but it is well within its operating range.

  • in reply to iksevas

    Yes, my one gets hot as well, where all the power regulators are: 62C with a contactless temp. sensor.

    So, I think: even it is annoying to get a board so hot (that I could burn my fingers), it is still in the range of specs. (but what is the live time of involved regulator chips?)

    It is obvious: power chips want to see 15V from USB-C and then bring it down to 3V3, 1V8, 1V2. With 2A total current, it results in 23W to burn. Even most of the regulators are SMPS, it is a bit annoying to see the board getting so hot, especially mainly just on Power Supply (FPGA with passive heat sink is even cooler).

    I think, it is 'intended' this way, works fine for me to let the board run for days, just 'don't touch' the board.