UCC28950: Secondary RCD clamp calculation

Shashank Varshney

Part Number: UCC28950

Tool/software:

Hi,

I was going through the UCC28950 datasheet & I found in Fig.56 that a RCD clamp is required at the secondary to damp out the ringing of secondary SR but I am not able to find how to calculate the values of the components used for the RCD clamp. Please share the link or document from where I can calculate their values.

over 1 year ago

0 Mike O' over 1 year ago

TI__Guru* 86266 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* 86266 points

Hello,

The following link will bring you to a thread that describes how to setup and RCD clamp on a PSFB. This should help you setup the RCD clamp for your design.

https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1132532/ucc28950-ucc28950-senkron-rectf-snubber-question?tisearch=e2e-sitesearch&keymatch=UCC28950%25252525252520snubber#

Regards,

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UCC28950: Secondary RCD clamp calculation