I have jus designed a half bridge switching power supply of 300W , switching at a frequency of 100 Khz. now im in the mode of building the prototype...but i am quite blur on the type of power transformer that i should use...can anyone advise me on this matter.
You can use Ferrite Core 3C85 (E+I or ETD). It can be found in ferroxcube site and by the way this company also introduces 3C94 core. It can be used at this frequency easily. ENJOY
I calculated for you the transformer's data.
if you unse Kaschke 2004 ferite, you need 110mm^2 area of the core, or above. The primeri winding should have 12 and the secondary winding should have 4 spirals to have +-168/+-56 transformation.
Hello, I'm also going to build a prototype of the half bridge converter. I'm a bit confuse with the transformer part. The secondary transformer is 56Vpeak. So the the Vrms is about 40V. How to 25V at the load?