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TPS63060-EP: Switching Frequency Ranges

Ted DeWalt
Prodigy 10 points
Part Number: TPS63060-EP
Other Parts Discussed in Thread: TPS63060

Tool/software:

Can the TPS63060MDSCTEP be made to perform to a tighter frequency range (is 1.850 MHz to 3.0 MHz).  We have interference issues at certain frequencies.

  • 0
    TI__Mastermind 25625 points

    Hi  Ted,

    Thanks for considering TI's device.   

    I am afraid we can not keep device work with frequency range mentioned when Vin and Vout is close(buck-boost mode), the actual frequency will decrease to half of norminal one.

    As shown in picture below, when device work in BUBO mode, Switching cycle is consist by a Buck phase and another Boost pahse, frequency of each phase is about 2Mhz.

    But if device work in pure buck or boost mode, yes, it can.

    BTW, could you let me know Vin, Vout and Iout range in your application? PFM only or FPWM is acceptable too?

    Regards

    Tao

  • 0 in reply to Tao Zhang
    Prodigy 10 points

    We've purchased multiple lots of these parts and seen different performance.  Some date code parts have been tested and found to operate with high percentages outside our "keep out" frequency range while other date codes operate in the "keep out" range and cannot be used.  Why do different lots perform differently?  Can TI identify date codes and/or procure parts that are outside our "keep out" frequency?  Are there any steps in fabrication or test in which parts can be screened?

  • 0 in reply to Ted DeWalt
    TI__Mastermind 25625 points

    Hi Ted,

    From ti side, what we can gurantee is the switching frequency will keep in range from our EC table in DS. For TPS63060, it is 2Meg to 2,6Meg in buck and boost mode.

    Yes, in fabrication, we will screen out device which is out of frequency range,

    Regards

    Tao