I'm looking for an efficient, external DC power supply for an ESP32 board.
I have two questions:
- Is better, for power saving, to power the ESP32 at 3.3 V or 5 V?
- What is a good efficient configuration for the DC power supply?
Any idea?
esp32
I'm looking for an efficient, external DC power supply for an ESP32 board.
I have two questions:
Any idea?
Best Answer
ESP32 works from 3.3V supply only. Most of the ESP32 boards include a LDO (liner regulator) to accept 5V from USB also. But it's "native" chip supply are still 3.3V. So the most efficient power supply source would be a 3.3V. This answers you 1st question.
As for the 2nd - any switching PSU for a 3.3V shall be just fine if you are powering it from mains. If you are powering from battery it depends on the battery type.