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[FAQ] TPS922051: How to support time multiplex in color-mixing application

Lucia Gao
Mastermind 32961 points

Part Number: TPS922051

Tool/software:

How to support time multiplex in color-mixing application with TPS922051/0?

  • 0
    TI__Mastermind 32961 points

    Since TPS922051/0 is floating Buck topology, extra gate driving circuit is needed in order to support time multiplex. Below figures show an example. In this case, if LED string 1 and LED string 2 don't need to work at the same (e.x. one LED channel on, another LED channel off), below circuit can help to driver several time multiplex LED load with one LED driver.