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Original question:

TPA6304-Q1: pop phenomenon occur when voltage in 13.2V drops down to 4.5V

TPA6304-Q1: pop question about voltage fluctuation test

Qin zhiqiang
Prodigy 70 points
Part Number: TPA6304-Q1

Tool/software:

Hi TI teams

     we still have two confusions about this IC

Q1:  the VBAT idle current is 115mA of typical, this test condition is no audio input, but if there have a audio input, how much the VBAT current is this ?

Q2: we attempt to use two difference voltage rail to provide power of this IC, one is BOOST_10V, connected to VBAT, another is battery, connected to PVDD. for our test ,maybe this is a solution to solve the pop phenomenon. Please help us to check whether is this usage feasible?

PVDD: from 13.2v drops down to 4.5V

VBAT: from 13.2v drops down to 10V

LOOKING FORWARD FOR YOU REPLY!

  • 0
    TI__Mastermind 43590 points

    Hi Zhiqiang

    Qin zhiqiang said:
    the VBAT idle current is 115mA of typical, this test condition is no audio input, but if there have a audio input, how much the VBAT current is this ?

    The VBAT current won't change too much with different output power. As long as all of FET are switching, the current consumption would be quite similar.

    Qin zhiqiang said:

    Q2: we attempt to use two difference voltage rail to provide power of this IC, one is BOOST_10V, connected to VBAT, another is battery, connected to PVDD. for our test ,maybe this is a solution to solve the pop phenomenon. Please help us to check whether is this usage feasible?

    Looks no problem.