Hi,
Have an ESP32 micro project thats used to control various output including some 12Vdc devices like a fan, linear actuator and led strip lights.
We have a generic AC adapter, the block shaped type, not a wall plug in, rated at 12v dc 3A which will easily handle the load of those devices, average below 1 A , odd peaks around 2A
However we need 5V for the Micro and some of the low current input devices plus a tft display, and trying to decide which is the best method.
3V3 devices will use the ESPs regulated supply.
We could use a typical LM2596 module or a LM7805 but wonder if they are likely to be affected too much by the mosfet switching or noise of the 12V devices or is there any extra circuity on these 5v regulators we can add to help isolate / negate that ? eg larger 5v rail caps
Another option would be to introduce a totally separate psu like a HiLink Mains to 5V module, but is that overkill ?
thanks.
Have an ESP32 micro project thats used to control various output including some 12Vdc devices like a fan, linear actuator and led strip lights.
We have a generic AC adapter, the block shaped type, not a wall plug in, rated at 12v dc 3A which will easily handle the load of those devices, average below 1 A , odd peaks around 2A
However we need 5V for the Micro and some of the low current input devices plus a tft display, and trying to decide which is the best method.
3V3 devices will use the ESPs regulated supply.
We could use a typical LM2596 module or a LM7805 but wonder if they are likely to be affected too much by the mosfet switching or noise of the 12V devices or is there any extra circuity on these 5v regulators we can add to help isolate / negate that ? eg larger 5v rail caps
Another option would be to introduce a totally separate psu like a HiLink Mains to 5V module, but is that overkill ?
thanks.