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I have this https://www.aliexpress.com/item/1005006205368963.html https://www.aliexpress.com/item/1005006205368963.html heavy copper heatsink on my favorite RK3
by megous 2y ago
I have this https://www.aliexpress.com/item/1005006205368963.html https://www.aliexpress.com/item/1005006205368963.html heavy copper heatsink on my favorite RK3588 board and it's still ~50 °C idling (with fan off) in open air setting with convective and radiative cooling only.
So good luck with having RK3588 under a touchpad in a box with no obvious airflow and actually using the SoC.
- rjsw 2y agoThe Pinebook Pro has the SoC on the underside of the PCB with a thermal pad connecting it to the metal lower case to make that a heatsink.
- megous 2y agoCu foil to spread the heat better on the inner backside of PBP would be even better. Magnesium alloys are not particularly great thermal conductors, so just the spot under the SoC is heated disproportionately to the rest of the backside.