ESP32 cooling and ambient temperature

drmacro
Posts: 26
Joined: Tue Dec 25, 2018 8:25 pm

ESP32 cooling and ambient temperature

Postby drmacro » Wed Jul 24, 2019 5:26 pm

With the an ESP32 in a closed enclosure going into a hot environment (i.e. an non-airconditioned garage) what things could be done to provide additional cooling?

The ESP32 is on a purchased breakout board, so adding ground planes to the PCB won't work.

Heatsink on the ESP32 metal can?

Fan drawing air through the enclosure?

Other ideas?

mikemoy
Posts: 626
Joined: Fri Jan 12, 2018 9:10 pm

Re: ESP32 cooling and ambient temperature

Postby mikemoy » Wed Jul 24, 2019 7:58 pm

The first question that comes to mind is are you sure you need to cool it off. The data sheet says:
The operating temperature of ESP32-D2WD ranges from –40 °C ~ 105 °C, due to the flash embedded in it. The other
chips in this series have no ebedded flash, so their range of operating temperatures is –40 °C ~ 125 °C
105°C = 221°F

Anything, would be long dead in an environment anywhere near that range. So yo sure you need to cool it ?

A heatsink on the can is a good idea, but I dont think the CPU has a thermal pad to the can so it may be useless. Have to lift the can to be sure.

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