Push-Pull vs Half Bridge

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maxplanck

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Hi friends,

I want to make 500W SMPS. 176VAC-276VAC Input range. Output 24V DC / 20A. I couldn't decide choose which one. Push-Pull or Half-Bridge. What is the advantages and disandvantages this topologies? Which one should I choose?


Thank you,


Best regards.
 

The main advantage with half bridge is reduced voltage stresses on the switching devices. This is why it is preferred for mains off-line switchers. Push-pull creates a voltage doubling stress on the devices and other problems like core stepping and saturation if you are not careful.
 
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