TPS38-Q1: VDD and SENSEx floating

Piotr F.

Part Number: TPS38-Q1
Other Parts Discussed in Thread: TPS37

Hello Team,

When TPS37/38-Q1 SENSE1 is connected to VBAT but VDD and SENSE2 is floating (not available ) - is there any risk to back-power from SENSE1 to VDD.? Are any series diodes needed between VDD and supply to prevent back-powering?

over 3 years ago

0 Marcoo Z over 3 years ago

TI__Mastermind 19550 points

Hi,

Let me look into this question and then respond back.

+1 Marcoo Z over 3 years ago in reply to Marcoo Z

TI__Mastermind 19550 points

Hi,

Orlando is designed for any power sequence (between Sense and Vdd). So Sense voltage applied first

and VDD coming later is allowed. Sense should not power the VDD line.

Power management

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TPS38-Q1: VDD and SENSEx floating