Doing some tests with the vocorev2 running in a sealed enclosure. I noticed that ethernet stops working somewhere between 50 and 55C whilst the rest of the board is still working (I can connect via wifi up to 65C). I tested this with several boards, not just one.
I am measuring the temperature at the PCB directly. Ambient temperature is significantly lower.
Is there anything that can be done to prevent this from happening? (apply a heatsink to a specific point, turn off something in the firmware....)
Ethernet shuts down at~50-55C
- Chourizo
- Posts: 8
- Joined: Tue Jan 26, 2021 6:39 pm
- Chourizo
- Posts: 8
- Joined: Tue Jan 26, 2021 6:39 pm
Re: Ethernet shuts down at~50-55C
Actually, after digging more into this this problem is related with the DC-DC converter that I am using to power the vocore. I beliebe this is EMC related. I guess the ethernet part is more susceptible towards EMC.
If I power it directly, it does work within the specifications.
If I power it directly, it does work within the specifications.
- Vonger
- Posts: 897
- Joined: Sun Oct 19, 2014 6:00 am
Re: Ethernet shuts down at~50-55C
VoCore2 need a pretty stable power input because its wifi, ethernet both are high speed port, maybe you can use a RC circuit or LDO or better DCDC at power supply part to reduce some noise.
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