I've built a comparator circuit that I want to use to drive a PMOS transistor. I only need negative output, but I'm on a single 12V/24V battery supply. I know I can create a virtual ground and split the supply, but since I only need negative output or 0 output is there a way to accomplish this without splitting the supply?
What would happen if I were to ground the V+ terminal and apply the battery positive to the V- terminal? In simulation this seems to work, but I haven't seen any information about it so I'm not sure what to do. I'm using an OPA454 TI operational amplifier (I know it's overkill for a PMOS, but the comparator I ordered (LM211QD) isn't in yet.