I am trying to design an electronic fuse.
The circuit is powered at 24V and the fuse should disconnect the circuit when there is a current greater than 11A. Searching the internet, I found several configurations and decided on one.
I am using the following circuit to detect current with a shunt resistor (R5) on the high side:
I got some feedback and will be using an amplifier and comparator, IC1A as the amplifier and IC1B as the comparator.
What minimum characteristics would you recommend for these chips?
Is there anyone with experience in amplifier operations who knows what features are critical in this type of design?
I really only need to select the correct components at this stage of the circuit, because I will be using a P-MOS as a switch. It will be controlled via a transistor network which I can make myself, but I need a high or low signal coming from this stage of the circuit to know when I should turn off the P-MOS. Could someone help me with this?