DRV3255-Q1: PHC_TH

Hollis Liu

Part Number: DRV3255-Q1

Hi team,

I would like to know how to understand the 75% for rising and 25 for falling of PHC_TH. Why do we set 75% and 25% as options?

Thanks.

0 Isaac Lara over 3 years ago

Hello Hollis,

Thank you for posting to the MD forum. The team will get back to you on your question tomorrow. We appreciate your patience!

Best,

Isaac

0 Hollis Liu over 3 years ago in reply to Isaac Lara

Hi team,

any update?

0 Adam Sidelsky over 3 years ago in reply to Hollis Liu

Hollis,

75/25 has historically been used on our devices because it give more headroom to protect against noise.

Regards,

-Adam

0 Hollis Liu over 3 years ago in reply to Adam Sidelsky

Hi Adam,

75% for rising, does that mean 75% for rising edge?

why do we choose 75%/25% as a configurable option, not other combination, for instance 60%/40%, 90%/10%?

0 Adam Sidelsky over 3 years ago in reply to Hollis Liu

Hollis,

Our prior devices also used 75/25 so we kept this for current generation devices.

Unfortunately those other drivers were designed a while back so I'm not sure where the original 75/25 split came from.

Regards,

-Adam

0 Hollis Liu over 3 years ago in reply to Adam Sidelsky

Thanks Adam.

75% for rising, does that mean 75% for rising edge?

0 Adam Sidelsky over 3 years ago in reply to Hollis Liu

yes!

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