UCC21551-Q1: dv/dt of VDD about UCC21530-Q1 and UCC21551-Q1

chengdp

Prodigy 70 points

Part Number: UCC21551-Q1
Other Parts Discussed in Thread: UCC21331-Q1, UCC21530-Q1

Hi e2e:

Could you please provide the information about dv/dt of the VDD of UCC21551-Q1 and UCC21331-Q1?

over 1 year ago

0 Andy Robles over 1 year ago

TI__Genius 13650 points

Hi Chen,

Similar to UCC2152x and UCC21222x families the recommended dv/dt is 5V/us as mentioned in the FAQ you linked to this thread.

Best regards,

Andy Robles

0 chengdp over 1 year ago in reply to Andy Robles

Prodigy 70 points

Hi Andy：

According to your FAE, the value of dv/dt about UCC21551-Q1 is 0.5V/ns，which is greatly improved based on UCC21530-Q1. So could you please double check this information because wo got inconsistent value?

thanks!

Chengdp

0 Andy Robles over 1 year ago in reply to chengdp

TI__Genius 13650 points

Hi Chengdp,

Thank you for pointing this out. I will align with my team to make sure we remain consistent with a value. I will provide an update early next week.

Best regards,

Andy Robles

0 chengdp over 1 year ago in reply to Andy Robles

Prodigy 70 points

Hi Andy,

Did you get the consistent value?

Best regards,

Chengdp

0 Richard Herring over 1 year ago in reply to chengdp

TI__Mastermind 21325 points

Hello Chengdp,

Andy may be out of the office at the moment. He should respond to your latest question within the next business day.

Regards,

0 Andy Robles over 1 year ago in reply to chengdp

TI__Genius 13650 points

Hi Chengdp,

I have confirmed with our design team the 0.5V/ns is correct. That will be the consistent value we'll go forward for UCC2155x product family.

Best regards,

Andy Robles

Power management

Power management forum

UCC21551-Q1: dv/dt of VDD about UCC21530-Q1 and UCC21551-Q1