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can't enforce single ENABLE on certain TPS65400 devices

Nikko Li
Intellectual 490 points
Other Parts Discussed in Thread: TPS65400

I have two TPS65400 devices on my board. #1 has three outputs, SW1, SW2, and SW3 & SW4 are configured in current sharing mode; #2 has two outputs, SW1 and SW2. I need to set ENABLE_PIN_CONFIG=single ENABLE on both devices. This can be done if the version is B or B3; but can NOT be done on #2 if the version is B4. Why is that?

Thanks

Nikko

 

  • 0
    TI__Intellectual 2590 points

    Hi Nikko,

    B3 is old version and please connect with TI sales or agent for replce, please don't USe B3 any more!!!!

    B3 and B4 should support single enable, need to check: put B4 version in #1 board, and configure single enable to see whether it can support.

    Let me know your test result.

    you can send me emial, eric-guo@ti.com.

    thanks!

  • 0 in reply to Eric Guo1
    Prodigy 5 points
    I can set ENABLE_PIN_CONFIG=single ENABLE on #2, i.e. the value is taken by the register. But if I set it that way SW2 does not turn on. VFB2 measures close to 0V. Only if I set ENABLE_PIN_CONFIG=active ENABLE can SW2 turn on.