EVGRAY Archive

Re: Push pull generator.

Database ID: 108558
2018-06-26T18:02:13+00:00
Sven Friedrich <[email protected]>

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Hi Guys,

since there is no response to this topic will write again.

Unfortunately, I have not found any suitable finished control boards and will now try again with a sg3525 controller to build a pulse width modulation in Pushpull principle.

I have already set up the circuit via a plug-in board with 2 potentiometers. from 5 to 40% pulse width and a frequency of 35 to 450 hertz. I think you can cover everything with this area, I think.

I want to build the controller modular so driver with optocoupler TLP250 for each mosfet, I do not want to use any IGBTs anymore as they are more sensitive.

So driver board and control board separately. At the low frequency, the interference should be limited by longer lines.

Until now, I have always broken the mosfets with the drivers, I want to design the driver board so that this does not happen so easily.

On Thamids blog, the TLP250 is described as used.

Best regards

Sven

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