TPS23753 PoE Cin (specification define from 0.05uF to 0.12uF)discussion

TT_Chin

Expert 2025 points

Hi Darwin,

One more question, does change C256 from 22uF/100V to 33uF/100V will influence Cin (specification define from 0.0.5uF to 0.12uF) ? also

if we connect D12 and D13 to multiple layer to help dissipate the heat, does it influence Cin?

see attachment for the schematic.

Thanks! 3124.PoE.pdf

over 9 years ago

0 Darwin Fernandez over 9 years ago

TI__Mastermind 41760 points

Hi TT,

C256 does not relate to the 0.12uF (max CIN) spec. This spec related to the capacitance between VDD and VSS (not VDD and RTN). C256 should be okay.
D12/13's parasitic capacitance should not effect the CIN spec.

Regards,
Darwin

0 TT_Chin over 9 years ago in reply to Darwin Fernandez

Expert 2025 points

Hi Darwin,
Okay, Thanks!

Regards,
Jefer

Power management

Power management forum

TPS23753 PoE Cin (specification define from 0.05uF to 0.12uF)discussion