Any suggestions for a controller for a minus 60 kilovolt adjustable supply?
Any other details?
Adjustable over what range
load characteristics, etc.
Sorry, it needs to run from a +24Vdc source. Output current 1/2 milliAmp. Adjustable from as near zero as reasonablly possible to -60kVdc. The output voltage will ultimately be controlled by an analog voltage in the 0 to +10V range (possibly 0 - 5). The load is an x-ray tube so it basically looks like a resistor (i.e. no negative resistance region).
Thanks for your suggestions.
That is a pretty ambitious project! My HV experience only goes to around 6KV, so I can only take you so far.
For my part, I might recommend a full bridge, fixed frequency, phase shifted, series resonant converter. Some sort of resonant converter will be required as the secondary capacitance is reflected onto the primary by the square of the turns ratio. That can be daunting to deal with, so charging it up and down via a resonant inductor will be much more efficient.
The UCC2895 controller would be worth considering - link is below.
Some thoughts that might help you along the way:
Anyway, those are my thoughts. Let me know if they make sense or if you had something else in mind.
All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with respect to these materials. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.
TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs andembedded processors, along with software, tools and the industry’s largest sales/support staff.