TPS65094: PVINVTT connects to groud when not in use ?

zhuyt05

Part Number: TPS65094

Dear Sir,

We are now using TPS650940 for Intel APL-I and we use LPDDR4.

I found "PVINVTT Connect to ground when not in use" in datasheet and "Same, but with no bypass capacitor required" in "TPS65094x Schematic Checklist, Layout Checklist, and ILIM Calculator tool (Rev. A)"

Which is right or both? Thanks!

over 6 years ago

0 Nick Jakse49 over 6 years ago

TI__Expert 4155 points

zhuyt05,

PVINVTT could be connected to BUCK6 or shorted to GND. However, the safer option is to connect to BUCK6, so that if VTT is turned on it won't powerfault. For some versions of the TPS65094x the VTT rail is disabled, so there isn't really a concern of VTT being powered on when it isn't in use, but for versions with VTT enabled, even when not in use it should be powered.

0 zhuyt05 over 6 years ago in reply to Nick Jakse49

Prodigy 110 points

Thank you very much!

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TPS65094: PVINVTT connects to groud when not in use ?