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We have to checked buck boost, found Current consumption in operating mode is getting 5.7mA.

naveen panthi
Prodigy 10 points

1.we have checked separately buck boost  ( TPS63001DRCR) with load connected.  www.ti.com/.../tps63001.pdf
1.1 when i/p supply from 3.0v to 3.5v ,found current consumption in operating mode is getting 5.7mA.
1.1 Can you tell what is the actual current consumption in operating mode

1.we have checked separately buck boost without load connected.
1.1 when i/p supply from 3.0v to 3.5v , we have found current consumption in operating mode is getting 5.7mA.
1.2 Can you tell what is the actual current consumption in operating mode.


2.Pins description
FB and Vout shorted
Gnd to gnd
Vina via 100 ohm from battery
PS/Sync via 1M to Vina
En via 1M to Vina
Vin from battery
2.2uH in between L1 and L2
PGND with Gnd
Vout to laod - but no load at the time of measurement

0.1uF on Vina
2*10uF on Vout
22uf and 150uf on VIN

  • 0
    TI__Mastermind 23600 points

    Hi  naveen,

      why consumption current is same with or without load, is this described wrong?

  • 0 in reply to Tao Zhang
    Prodigy 10 points

    sorry my mistake. Yes, it was describe wrong in the above.

    1. We have checked separately buck boost  ( TPS63001DRCR) without load connected. www.ti.com/.../tps63001.pdf
    1.1. When i/p supply from 3.0v to 3.5v , we have found current consumption in operating mode is getting 5.7mA.
    1.2. Can you tell what is the actual current consumption in operating mode.


    2.Pins description
    FB and Vout shorted
    Gnd to gnd
    Vina via 100 ohm from battery
    PS/Sync via 1M to Vina
    En via 1M to Vina
    Vin from battery
    2.2uH in between L1 and L2
    PGND with Gnd
    Vout to laod - but no load at the time of measurement

    0.1uF on Vina
    2*10uF on Vout
    22uf and 150uf on VIN

  • 0 in reply to naveen panthi
    TI__Mastermind 23600 points

    Hi   Naveen,

          You are welcome. 

          As shown in datasheet, quiescent current is 50uA,much smaller than 5.7mA, did you use a multimeter or something else?

          

          BTW, it is really strange in your design, could you show me the application and detailed schematic?

    Regards

    Tao