I am designing a circuit with a load that will consume up to 2A @ 5V. I decided to use a slide switch rated at 100mAh to drive an N-channel MOSFET for the (relatively) high current, since a slide switch rated for 2A is significantly bulkier.
I understand that when using N-channel as a switch it is connected on the low side between the load and GND.
I'm just wondering about best practices for separating the circuit GND from the load GND that needs to go through the MOSFET. I'm guessing I should use different net names for those two GNDs.
- Which one of the grounds should I call GND? The external "raw" one? Or the one that goes through the MOSFET? I already have a dozen GND nets/symbols in my circuit that should be going through the MOSFET
- Should I use different symbols for the two grounds? Or same symbol with different net names?
- Does anyone have an example schematic with a similar circuit I can look at for reference?
I am mainly asking about best practices and ensuring maximum readability. Thanks!