Vin, MKR1010 and Ethernet shield

Official Hardware MKR Family MKR WiFi 1010
1

Hello,

I powered the MKR1010 module on Vin with 5.0V. This is working fine until, when I want to mount the Ethernet shield.
When I connect the Ethernet shield to the MKR1010 module the BQ24195L power management IC try to start six time, but finally turned off.
If I connect the USB, parallel with Vin, the MKR1010 module started with Ethernet shield without any problem.
I verified all of the power level with oscilloscope and tried with 2 different MKR1010 and 2 different Ethernet shield.

Does anyone have any experience with this?

Thanks, Tamas

Vcc_power_start.jpg
Vcc_power_start.jpg1801×1010 170 KB

Vcc_power_off.jpg
Vcc_power_off.jpg1803×1012 162 KB

2

Hello,

I can answer it for myself.
I verified the power supply with oscilloscope, and I doesn't saw any problem.
I tried to add more filter capacitor, and this is solved the problem.

BR, Tamás

3

Thanks for taking the time to post an update with your solution szaiftamas! I'm glad to hear you got it working.