UCC28950: Schematic check for parallel synchronous operation on UCC27714EVM-551

Koshi Ninomiya

Part Number: UCC28950
Other Parts Discussed in Thread: UCC27714EVM-551

Hi Team,

My customer is considering to evaluate two UCC28950s under parallel synchronous rectification operation by using two UCC27714EVM-551 boards. One board is for Master and the other board is for Slave. From the schematic of UCC27714EVM-511, they are thinking connection between EVMs as attached excel file below. Could you review their connections and answer to questions from them in the file?

4431.UCC27714EVM-551 Parallel Operation 20200909.xlsx

I look forward to your reply.
Thank you.

Best Regards,

Koshi Ninomiya

over 5 years ago

0 Colin Gillmor over 5 years ago

TI__Mastermind 25570 points

Hello Koshi-san

The customer's arrangement is correct. I added a few notes to their excel file - attached. The only concern is that the ground connections be short and the SYNC signal is prevented from picking up noise.

/cfs-file/__key/communityserver-discussions-components-files/196/Copy-of-4431.UCC27714EVM_2D00_551-Parallel-Operation-20200909_5F00_cg-Comments.xlsx

Regards

Colin

Power management

Power management forum

UCC28950: Schematic check for parallel synchronous operation on UCC27714EVM-551