TPS23861: Schematic review for TPS23861 2-port PSE application

Jacky Wang(QD)

Part Number: TPS23861

Hi Experts,

Can you help to take a look at attached customer's schematic for TPS23861 2-port PSE application? If only 1pcs device has been used, how to deal with AOUT/AIN pins?

Thanks a lot!

SCHEMATIC1 _ 10 PSE.pdf

over 6 years ago

0 Thomas Amlee over 6 years ago

TI__Genius 9230 points

Hi Jacky,

I have notified our PSE expert.

Thanks,
Tom

0 Jack CCY over 6 years ago

TI__Intellectual 1695 points

Hi Jacky,

For the PSE part in schematic, here are the comments:

1. It would be better that unused SENSE pins are connected to GND

2. Capacitors between GATE and GND like C1509-C1512 should be removed, this will impact the speed of MOSFET turn on and off

3. If only 1pcs device is used, AOUT pin can be floated, AIN pin can be floated or grounded

Thank you

Best Regards

Jack Chen

0 Jacky Wang(QD) over 6 years ago in reply to Jack CCY

TI__Genius 9940 points

Hi Jack,

Thanks a lot for the feedback!

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TPS23861: Schematic review for TPS23861 2-port PSE application