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DS90UB960-Q1: how to do Power Over Coax circuit simulation/check

damodara s
Prodigy 30 points
Part Number: DS90UB960-Q1

Hi,

we are doing feasibility analysis for DS90UB960-Q1 deserializer ic.

They have provided POC component values but how we can simulate/check before freezing the design.

Is there any way/simulation procedure to check POC(Power Over Coax) values.

Please help us in this point.

regards,

Damodara.s

  • 0
    TI__Guru 66810 points

    Hi Damodara,

     The main key is ensuring adequate impedance across frequency at desired current profiles through the network. PoC networks' impedance of ≥ 1 kΩ over the specific frequency band is typically sufficient to isolate the transmission line from the loading of the regulator circuits.

    The datasheet’s Power over Coax section provides recommended network/component combinations for 2G/4G links.

    Regards,

    Logan

  • 0 in reply to Logan Cummins
    Prodigy 30 points

    Hello Cummins,

    Thank you for info.

    Is there any process/simulation guidelines to cross check the recommended values in TI datasheet.

    This will be helpful in proving our design to the customer.

    Regards,

    Damodara

  • 0 in reply to damodara s
    TI__Guru 66810 points

    Hi Damodara, 

    damodara s said:
    Is there any process/simulation guidelines to cross check the recommended values in TI datasheet.

    If other values/networks than what TI already recommends in the datasheet, customer can simulate based on S-parameters of the individual components to ensure that that collectively the network meets TIs requirements ( ≥ 1 kΩ as already mentioned). 

    All in all, it is recommended to just use the already validated networks listed in the datasheet.

    Regards, 

    Logan