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Pulse generated off 50V rail circuit ideas?

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bowman1710

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Hi Guys,

I have a controller that needs to be brought over a 10V threshold for start-up but then can drop for normal operating conditions. (I have attached a rough drawing of the functionally). I have a supply of 8V that will be powering the controller continuously, but need some form or circuit that can run off a 50V rail and provide a 10-12V pulse, when the controller has started then ideally this will break from the HV line to save power losses etc. I've got some ideas of my own but was wondering if anyone else had some other ways to do this?


pulse circuit.png
 

davoud

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I think you can make this pulse by a buck regulator and a transistor for switch it on and off.lm2576hv-adj-buck-regulator-schematic.pngindex.png
 

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