Power Requirement for ESP32-C6

[mywaggle]

Hi,
We are planning on a project using the ESP32-C6 MINI module and designing the Power Section with 3.3V/0.5A LDO as per the datasheet.
While checking the ESP32-C6 Devikit, the power deigned with 3.3V/800mA.
During our development with 3.3V/0.5A design, we faced continuous BOD reset during WiFi connection. In menu config, the BOD voltage level set 2.51V and upon checking the Input voltage, no drop found and max current observed was 250mA during this BOD.

We are suspecting this is related to current.Can I proceed with the 3.3V/0.5A?


Thanks,
Jagan K

[Sprite]

Datasheet says " If you use a single power supply, the recommended output current is 500 mA or more.", so 500mA should be sufficient. How is the decoupling near the module? If there's a long-ish, thin-ish trace running from your LDO to your module, you will have issues like this. Also, pay attention to the keepout requirements of the antenna of the module: if you make a mistake there (antenna too near to a ground plane) you might also see brownout issues.

[mywaggle]

Hi,
Thanks for your reply.
We are using the single Power supply LDO of 3.3V/500mA. We have placed the Decoupling capacitors and LDO nearer to the ESP Module, attached the image for your reference.
And for antenna section, we have used the ESP32-C6-MINI-1-N4 in our design. We have provided a PCB cut-out under the antenna area same as in development kit.

Thanks,
Jagan K

[Sprite]

That should be fine. Perhaps also add an 10uF or so cap on the 3.3V line to ground very close to the power input of the module itself, just to be sure.

[mywaggle]

Hi,
Thanks for your reply. We have already installed a 10uF capacitor between 3.3V and Ground line.


Regards,
Jagan K