Looking for half-bridge and full-bridge DC-DC converter circuit diagrams

[stevenmahoney]

I am looking for a half-bridge and full-bridge DC-DC converter circuit diagrams or a web site where such diagrams could be found. It would be ideal if I could also get a formulas to calculate values to fit my needs.

Any information would be welcome.

Thanks!

 

[pradeep.g.belchada]

for the half bridge use tl494. htttp://ti.com same can be modified for the full bridge

 

[stevenmahoney]

I am not sure how to use that WEBENCH tool, if that is what you meant. Every time I enter parameters, it gives me a message "No parts found" or "your solution is not WEBENCH enabled"... What am I doing wrong?

 

[pradeep.g.belchada]

search for the tl 494 datasheet but what is your requirement like how much is the dc i/p and dc o/p ampere post here

 

[stevenmahoney]

The input voltage is 110-120 AC, and I need to have an ability to make various output voltages and currents. For example, right now I need 250V and 2A, then 250V and 4A, etc.

I am feeding LEDs, so the converter needs to be a constant current.

Steven

 

[pradeep.g.belchada]

you have to desgin a two stage powersupply one will be for the dc 300vdc second will be for the 250vdc 2a & 4a

1) use sg3525 as a pushpull converter for 300vdc


2)to convert 300vdc to 250 2a use uc3844 as constant current driver

for trafo refer https://www.poweresim.com