I need to design a over voltage protection circuit. I intend to use a comparator for the said circuit. The reference will be from a standard voltage ref source. While the voltage at the non-inverting terminal would be the output of voltage bus.
Now, based on the comparator truth table - if the 2 are equal the output is zero and if the Vsupply is greater than reference the output is high. Now, wouldnt small spikes in the Vsupply(to the non inv terminal) be a source of voltage corruption ? How can I ensure a smooth dc level here ?
Also, suppose I want to send the output of the comparator to 2 different MOSFETS,I understand that I cannot just supply it directly as the sourcing current of comparator might not be enough. I might have to have a driver. Would a transistor be sufficient in this case ?