UCC21530-Q1: is VIOWM related with chip life span usage?

Elec Cheng

Expert 7055 points

Part Number: UCC21530-Q1

Hi Expert,

Our customer would like to know, if VIOWM is related with chip life span usage? If not, what does it affect? Thanks.

BR,

Elec Cheng

over 3 years ago

0 Leslie Marquez over 3 years ago

TI__Genius 9401 points

Hi Elec,

Thank you for your question. Our expert is out of office today due to the US holiday and will get back to you in the next couple of days.

Best regards,

Leslie

0 Elec Cheng over 3 years ago in reply to Leslie Marquez

TI__Expert 7055 points

Hi Leslie,

Any feedback? Thanks.

BR,

Elec Cheng

0 Krystian Plaskota over 3 years ago in reply to Elec Cheng

TI__Expert 4065 points

Hi Elec,

I think the TDDB lifetime graph on page 4 of this document will answer your question: https://www.ti.com/lit/wp/sszy028/sszy028.pdf

VIOWM is related to the chip's lifespan, the stress voltage below the VIORM level is correlated with a 40 year lifespan of the driver. However higher stress voltages (>2500 vrms) sharply decreases the drivers lifespan.

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UCC21530-Q1: is VIOWM related with chip life span usage?