Hello,
I'm designing a "simmer" supply for flashlamps, with a 24V input, 300V open-circuit output and 300mA constant-current regulation. I'm confident the overall principle will work, having already prototyped the circuit.
I would like to reduce the power dissipation in the primary current sense resistor, which is currently in the region of 1.5 to 2W, and was wondering if it is possible to use a current-sense transformer instead? For example, this one from Mouser -
I'd presumably place it in the drain of the MOSFET rather than the source (to avoid any effect on the gate drive). Are there any problems which a current transformer might introduce?
Best regards,
Lindsay Wilson