High frequency transformer design

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high frequency transformer design

Hi, I am in HK.
I am going to desgin a transformer for full bridge phase shift DCDC converter.
The input range is 48-96v,out:200V. fs=100khz.
In HK, I can find a good core. The biggest is ETD59 (3c90) from farnell.
Is it enough to make a 1kw?
or i\If i want to make 2kw, which material available in HK is good?
E core: **broken link removed**
Any common technical problem will happen in my circuit for 100kHZ?
Thanks

Added after 1 minutes:

I know that if i boost fs, i can use smaller transformer, but i am not sure whether i can be successful. Any command for higher frequency?
 

high frequency transformer calculation

From data overview, ETD59 should be good for an up to 6 kW push-push converter at 100 kHz. But, this depends on an appropriate winding design.

You can use e. g. the EPCOS ferrite tool to perform some transformer calculations. Epcos has similar materials to Feroxcube ferrites.

Any common technical problem will happen in my circuit for 100kHZ?
Click to expand...
I like to ask, which possible problems you already considered with your present design. Most serious problems to my opinion are circuit leak inductance and switching losses. Thus I previously doubted, if 100 kHz is a good choice.
 
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    mridul

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ferrite transformer calculator

My topolgy is full bridge pahse shift converter, leak L is used to obtain ZVS. Do I need to make a snabber? since b4 soft sw, there is a hard SW
 

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