TPS54622: EN pin maximum float voltage

Faizul Bacchus

Intellectual 1875 points

Part Number: TPS54622
Other Parts Discussed in Thread: UCD9090A

What is the maximum voltage the EN pin will rise to when left floating and device is on

Thanks

Faizul

over 5 years ago

0 Anthony F over 5 years ago

TI__Mastermind 35115 points

Hi Faizul,

I checked some data we have and it indicates the EN should come up to 2.9 V typical. This same set of data suggests a +6 sigma max of ~3.2 V.

Can you share some details on why this parameter is needed?

Thanks,
Anthony

0 Faizul Bacchus over 5 years ago in reply to Anthony F

TI__Intellectual 1875 points

Hi Anthony

Thanks. The reason is the EN pin is tied to a UCD9090A GPIO pin configured as open drain for sequencing and the UCD9090A has a max voltage rating on the GPIO pin so wanted to make sure that was not exceeded when GPIO goes high impedance.

Thanks,

Faizul

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TPS54622: EN pin maximum float voltage