AWR6843ISK: Load switch for delaying 3.3V to IWR6483 module

Yunlong

Part Number: AWR6843ISK

Hi ,

I'm just preparing a custom board with the AWR6843.

I designed it based on the reference design PROC073C. But I didn't understand the role of U9 (TPS22917DBVR). According to the notes in the schematic, this is Load switch for delaying 3.3V to IWR6483 module. But I didn't understand.

Looking forward to your answer.

Thanks

Best wishes

over 5 years ago

0 Charles Oladimeji over 5 years ago

TI__Mastermind 33805 points

Hi,

The TPS part is for sequencing to ensure 1V8 is set before 3V3.

Regards,

Charles O

0 Yunlong over 5 years ago in reply to Charles Oladimeji

Intellectual 651 points

Hi Charles O,

Thanks.

But R191 should not exist.

0 Charles Oladimeji over 5 years ago in reply to Yunlong

TI__Mastermind 33805 points

Hi,

Thanks for the observation, updates will be made to the design files.

Regards,

Charles O

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AWR6843ISK: Load switch for delaying 3.3V to IWR6483 module