Please help me with this design as i am stumped as to how i should limit the current going through the mosfets.
the design is 300vdc on the mosfet and i want to limit the current to 3 amps. I dont want to switch the drivers off and wait for the current to dissipate becuase if i do this then the circuit wont switch on because the current draw will be 3 amps. using the sd pin according to the datasheet will switch off the mosfet until the current subsides below the limit.So my reasoning is that if the circuit draws 3 amps then it will switch off am i correct with this or am i seeing it wrong. Furthermore if i can limit the current draw to three amps then the circuit will draw three amps only no more and the circuit should work.
please advise me on what you think.
also I am not stuck with this design so any suggestion on another design that would work is good.
the circuit.
I am pulsing the mosfetson for 2 secs then off for .5 secs then pulsing the other mosfets on for 2secs etc.
the design is 300vdc on the mosfet and i want to limit the current to 3 amps. I dont want to switch the drivers off and wait for the current to dissipate becuase if i do this then the circuit wont switch on because the current draw will be 3 amps. using the sd pin according to the datasheet will switch off the mosfet until the current subsides below the limit.So my reasoning is that if the circuit draws 3 amps then it will switch off am i correct with this or am i seeing it wrong. Furthermore if i can limit the current draw to three amps then the circuit will draw three amps only no more and the circuit should work.
please advise me on what you think.
also I am not stuck with this design so any suggestion on another design that would work is good.
the circuit.
I am pulsing the mosfetson for 2 secs then off for .5 secs then pulsing the other mosfets on for 2secs etc.