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AURIX™ Forum Discussions

User18151
Level 3
Level 3
First solution authored
‎Nov 07, 2019 01:30 AM
‎Nov 07, 2019 01:30 AM

Why VDD pins need to be connected externally?

Hi all ,

Does anyone know Why VDD pins need to be connected externally ?

Thank you in advance
KR
Christine

#8042000 13175
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User18237
Level 5
Level 5
First solution authored First like received
‎Nov 07, 2019 03:07 AM
‎Nov 07, 2019 03:07 AM

Re: Why VDD pins need to be connected externally?

Hi Christine,

Embedded voltage regulator (EVR) uses a close loop system to regulate the core voltage domain.
The VDD output pin is separated from the VDD feedback sense. If both pins are disconnected, the VDD output voltage may rise to VDDP3/2 ~ 1,7V, causing an over voltage condition.

Kind regards
Mr.AURIX™
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