Hello,
Can anyone help with this request?
I am working on a project that uses a IRFZ44N mosfet as a switch to turn disconnect a load that is connected to a battery. I am using a LM393 comparator to turn of the voltage at the gate when the battery output becomes 16V. I have gotten it to work at 21V and up to 2A. The problem that I am having is that I need it to be able to run at 2.7A, but the second I go over 2, the mosfet begins to overheat and stops working. Everything else in the circuit seems to be working as intended. I have tried to use the mosfet in both the low and high side, but the issue recurs, I also used an IRF3205, which is supposed to be a high current mosfet but this one suffered the same fate. My setup has the gate connected to the LM393, which sends 5V as long as the battery output is greater than 16V, drain is connected to the load, and source to (-) on the battery. Would someone please be able to tell me why this might be happening and if here is a specific type of mosfet that would suit this application better. I saw I might be able to use a low-side switch but I had never heard of these devices before, so I appreciate any help with this.