I will often see Cockroft-walton and their bipolar variants used in high voltage, low output current applications such as x-ray generators.
Is there anything about their possible power delivery that limits them to this usage case? I have designed an LCC converter which operates at a maximum output voltage of -3kV, but the output current is a bit higher at -200mA. (Power = 600W).
I had originally planned to use a typical voltage doubler, or a simple full bridge rectifier on the output, something like 2-3 of them in a series-connected combination.
But I am looking at the viability of using a planar transformer to isolate the primary and secondary voltages, and believe this will be made much, much easier if I can use one single secondary winding. For this reason, I am thinking of generating about 500V on the secondary, and having a string of Bi-polar cockroft Walton multipliers connected in series to generate the final output.
The load regulation is not stringent, at +200/-200V or so, and the ripple requirements are also quite relaxed, about 20V-50V. As a results I think this could be a good candidate.
I have a separate 6kV output @ 10mA, which I plan to generate with a flyback converter, without the use of a planar transformer as I believe this will pose too many issues. The transformer for the 6kV should be fairly small anyway, considering the low power delivery required.
Any insight is appreciated!
Is there anything about their possible power delivery that limits them to this usage case? I have designed an LCC converter which operates at a maximum output voltage of -3kV, but the output current is a bit higher at -200mA. (Power = 600W).
I had originally planned to use a typical voltage doubler, or a simple full bridge rectifier on the output, something like 2-3 of them in a series-connected combination.
But I am looking at the viability of using a planar transformer to isolate the primary and secondary voltages, and believe this will be made much, much easier if I can use one single secondary winding. For this reason, I am thinking of generating about 500V on the secondary, and having a string of Bi-polar cockroft Walton multipliers connected in series to generate the final output.
The load regulation is not stringent, at +200/-200V or so, and the ripple requirements are also quite relaxed, about 20V-50V. As a results I think this could be a good candidate.
I have a separate 6kV output @ 10mA, which I plan to generate with a flyback converter, without the use of a planar transformer as I believe this will pose too many issues. The transformer for the 6kV should be fairly small anyway, considering the low power delivery required.
Any insight is appreciated!
