I'm building a induction heater which will possibly melt metals rated for around 2kw. The thing is when i connect the power supply to it the 25V smps voltage drops down to somewhere around 1.7V and one MOSFET get warm, and gets hotter if connected for more than 30sec. The smps is rated for 24v @30amps. I have 3 of such power supplies but for initial test im only using 1 which is set to 25V.
The schematic im following is attached.
A year ago i build a small induction heater which had similar problem in the initial testing but later worked after i connected 2 channels of a bench power supply in parallel and it consumed around 5 amps after being started with nothing in the work coil. But now I'm building big, so what's probably wrong here? Do i need to connect more smps in parallel so as to compensate for the voltage drop? I think this much current is enough for the size.
This is the size of it.
The schematic im following is attached.
A year ago i build a small induction heater which had similar problem in the initial testing but later worked after i connected 2 channels of a bench power supply in parallel and it consumed around 5 amps after being started with nothing in the work coil. But now I'm building big, so what's probably wrong here? Do i need to connect more smps in parallel so as to compensate for the voltage drop? I think this much current is enough for the size.
This is the size of it.