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TPS25947: TPS25947

nitsan mushkatel
Prodigy 90 points
Part Number: TPS25947


Tool/software:

Hi All.

on the data sheet of the TPS25947, there is the optional Oring connectivity pages 44-46.

TI writes - when the VIN1/2 are matched "current is shared between the rails in the ratio of differential voltage drop across each device"

the first section is understood - current will be shared, as for the later section in the writings i am not dure, could you please clarify on that ?

does it means that the total series Rds will decrease due to two resistors connected in parallel , please clarify? 

thx.

nitsan.

  

  • 0
    TI__Mastermind 39295 points

    Hi Nitsan,

    nitsan mushkatel said:
    TI writes - when the VIN1/2 are matched "current is shared between the rails in the ratio of differential voltage drop across each device"

    When the Vin1 and Vin2 are close to each other, both device will conduct the current. In that case, the distribution will only depend on the path impedance which is dependent on the PCB trace and the device Rdson variation. Here they have mentioned this in terms of voltage drop across the path of each device.

    nitsan mushkatel said:
    does it means that the total series Rds will decrease due to two resistors connected in parallel , please clarify? 

    Yes the total resistance across the path will decrease in this case as both devices rdson will be in parallel.

    Best Regards,
    Arush