DC-DC Converter recommendation

Neethu Joy

Other Parts Discussed in Thread: UCC28950

I want to design a DC-DC Converter with isolation of about 220V DC with a power output around 3KW. The input stage is a PFC topology which gives an output of 400VDC. Suggest any suitable topologies.

over 1 year ago

0 Mike O' over 1 year ago

TI__Guru* 85616 points

Hello,

Your inquiry is under review and I will get back to you shortly.

Regards,

0 Mike O' over 1 year ago in reply to Mike O'

TI__Guru* 85616 points

Hello,

For 3 kW for a PFC input to a 400 V DC output I would recommend a phase shifted full bridge. This is due to it's capability to zero voltage switch for the most efficient design possible.

The following link will bring you to the UCC28950 phase shifted full bridge controller that you can use in your design.

https://www.ti.com/lit/ds/symlink/ucc28950.pdf

The following link will bring you to the step by step design of a phase shifted full bridge using the UCC28950. There is even a link to an excel design tool in the application note that uses the same equations as is in the application note.

https://www.ti.com/lit/pdf/slua560

Regards,

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DC-DC Converter recommendation