MCP1406/07 MOSFET DRIVER

[Jeg]

sorry i forgot this

[Jeg]

I have this with a 10.000μ permeability. (Fair rite) but the cable is too thick for making 17 turns inside there. I will put something smaller and give it a try.

[gyulasun]

There is problem now that you wish to use the input transformer: the MCP chip may get burned the fist moment it is switched on because the DC resistance of the coax cable is but a few milliOhms, letting a quasi short circuit appear the chip output if the series 3 Ohm is there than it is the only resistance to limit the shorting current. To remedy this, a coupling capacitor of a few uF should be connected in series with the 3 Ohm to block DC current.

[Jeg]

Revised Diagram after Gyula's proposals

- One Resistance 3 Ohm after MCP1406
-Electrolytic cap 4.7μF after the above resistance. For Frequencies above the audio range this cap should be smaller.

Jeg

[Jeg]

Gyuila my new load inductor at mosfet's side is 20μΗ. At 500Hz minimum rate it will be like a shortcut. Is it a good method to put a resistor in series with the inductor? Can I get over it by just having a very short pulse through the pwm?