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LLC half-bridge, or phase shifted full-bridge?

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kender

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Colleagues,

LLC half-bridge, or phase shifted full-bridge?

Here are the requirements, which I'm facing:

Nominal output: 20V, 25A.
Overload output: 10 to 20V, 60A. Overload lasts for up to 2 sec.
Input: 110VAC
no PFC​

The output powers a DC motor, so the regulation doesn’t have to be very precise.

Any suggestion, insight or reference is really appreciated!

Cheers,
- Nick
 

kender said:
LLC half-bridge, or phase shifted full-bridge?
Click to expand...


LLC will give you the overcurrent you need, just need some biggish fets in the half bridge - which are readily avail now.

Regards, Anna.
 

Are you directly connecting this DC to a brushed DC motor, or to a separate motor driver/controller? Do you actually need isolation? If not, you may not need a fancy DC-DC converter (though you likely will want active PFC on the input).
 

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