Hello everyone.
I am working on a project that involves the use of MOSFETs to turn a matrix of electromagnets on/off. The project is quite complex and involves several different circuits, but for facilitating this specific discussion, I have simplified the circuit to focus on this specific issue only.
The simplified circuit below works perfectly with just an N-Channel MOSFET which turns opens/closes the circuit (the MOSFET named N1 in the diagram), but as soon as I add a second MOSFET in series as shown in the diagram (MOSFET N2) and turn the second MOSFET on, it shorts for some reason between the source and the drain, burning it out. Nothing happens to the first MOSFET. I am trying to figure out why that's happening but I can't make a sense of it.
Is there a specific "protocol" to follow when chaining MOSFETs in series? For example: do I need to turn them on exactly at the same time? Or do I need to turn the N1 first and the N2 second? Or vice-versa? Or all that doesn't really matter and I am missing something else?
I am eager to know your thoughts on this. Thank you!
I am working on a project that involves the use of MOSFETs to turn a matrix of electromagnets on/off. The project is quite complex and involves several different circuits, but for facilitating this specific discussion, I have simplified the circuit to focus on this specific issue only.
The simplified circuit below works perfectly with just an N-Channel MOSFET which turns opens/closes the circuit (the MOSFET named N1 in the diagram), but as soon as I add a second MOSFET in series as shown in the diagram (MOSFET N2) and turn the second MOSFET on, it shorts for some reason between the source and the drain, burning it out. Nothing happens to the first MOSFET. I am trying to figure out why that's happening but I can't make a sense of it.
Is there a specific "protocol" to follow when chaining MOSFETs in series? For example: do I need to turn them on exactly at the same time? Or do I need to turn the N1 first and the N2 second? Or vice-versa? Or all that doesn't really matter and I am missing something else?
I am eager to know your thoughts on this. Thank you!