ESP-NOW brownout problem

[ogedik]

Hi,

I am supplying power to ESP32-C3-13 MCU Kit from HT7833 with 3.7v 2500 mAh LiPo battery. ESP32 is working without any problem from 4.2v to 3.9v when I send data by using ESP-NOW protocol. Brownout problem begin when voltage drop below from ~3.9v level. I used different capacitors on C1, C2 and C3 between 3.3v and GND pins but never worked.

At this stage I have tow questions;

1) What is the safe supply voltage and current level for ESP-NOW protocol? Is there any formula for it? How can I prevent brownout problem without disabling BROWNOUT_DETECTOR on ESP?

2) How can I calculate and determine capacitor requirements for C1, C2 and C3?

Please find circuit attached into the message. Thank you for your support.

Best regards,

Orkun Gedik