I'm trying to make a circuit board that has a microcontroller on it that performs some communications and sensory... I'd like to be able to turn this entire board on by switching a LOW-side MOSFET (ie, disconnecting ground/vss). The resistance is only 1mOhm (a few mosfets in parallel) in the end so that shouldn't be much of a worry in terms of a higher ground plane compared to my external circuit that communicates with said uController.
I'm debating if it would be smarter to introduce the Nchannel mosfets as a high-side switch using a MAX1614 charge pump.. I'd prefer not to go this route because I don't have much flexibility to change the high-side power traces on the PCB layout to place the 5 mosfets on the high-side (vcc).
Do you think it will be fine to just disconnect GND from the circuit using the mosfets?
Thanks!
-Chris
I'm debating if it would be smarter to introduce the Nchannel mosfets as a high-side switch using a MAX1614 charge pump.. I'd prefer not to go this route because I don't have much flexibility to change the high-side power traces on the PCB layout to place the 5 mosfets on the high-side (vcc).
Do you think it will be fine to just disconnect GND from the circuit using the mosfets?
Thanks!
-Chris