LM5146-Q1: If syncout pin is not used, should it be grounded or kept open?

AJIT JAIN

Part Number: LM5146-Q1

Hi Team,

If syncout pin is not used, should it be grounded via 10 kohm resistor or kept open? What is suggested , specifically from the perspective of EMI (radiated immunity, Bulk current injection etc).

Thank you,

Ajit

over 1 year ago

0 Orlando Murray over 1 year ago

TI__Mastermind 22301 points

Hi Ajit,

Just leave SYNCOUT floating.

The EMI impact would be negligible, the converter operating at that frequency would be a much more significant contributor of noise there.

Hope this helps,

-Orlando

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LM5146-Q1: If syncout pin is not used, should it be grounded or kept open?