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Req:HV power supply design guide

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goodboy_pl

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dear friends,
i am going to design a HV power supply with following specs:
Vo=6000V
Io=1mA
load regulation=5%
Vi=12V
i am familiar with switching power supply design,but until now it is my first experience in HV power supplies.
i think flyback topology and UC384x is the best solution; my problem is about the transformer design and construction,also i think there is some problem in feedback circuit(resistor voltage devider),so i will be grateful if u could help me.
all of your comments,tips,app.notes and design guides will be appreciated.

thanx inadvance.
 

bomba

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goodboy_pl

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mtawab74

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to generate high voltage i thiunk the normal flyback topology is not sufficeint as u will ned a huge number of winding in secondary

but as in TV horizentalor as in Spark ignition there's a good ways to generate those hiugh voltages

this way depends on resonance , wher the charged primary inductor in flyback transformer resonates with a capacitor between the collector and emitter of switching transistor those generating a peak voltage over primary windings which could be raised to the 6000 v with small turns ratiuo

i.e u can get about 1000 on primary by resonqance then step those 1000 to 6000 by 6:1 turns ratio



or u may connect the primary to the secondary at the collector so the primary current passes through higher inductance secondary generating higher voltage


this is my openion

also u should care about the isolation


also u may use voltage doubler
 

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