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LTC4278 Recommended for New Designs The LTC4278 is an integrated Powered Device (PD) controller and switching regulator intended for high power IEEE 802.3at and 802.3af applications. With... Datasheet LTC4278 on Analog.com
any schematics example ?
is there any support engineer from ADI?
(+) LTC4278 how to achieve PoE dominace - Q&A - Power Management - EngineerZone (analog.com)
Hi Ron, thanks for the schematic example!
If the wall adapter voltage will be 12V, with this schematic then we will have such behavior:
a)
If starting with POE - power will be supplied from POE, even if we connect 12V adapter.
in this case, if we remove POE - a seamless transition to 12V adapter will be.
b)
If starting with 12V adapter, then connect POE - power will be supplied from adapter, and no POE detection/negotiation will be starting.
in this case, if we remove 12V - no seamless transition to POE
_
Is it correct ?
Is there any possibility to have seamless transition from wall adapter to POE with this controller?
Thanks in advance!
another 3 weeks without answer .....
It´s not appropriate behavior from AD support
I´m quit to using this product in my design
Good luck
