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UCD90320: Power sequence of multi rails of processor

user4811888
Intellectual 530 points
Part Number: UCD90320

Hi expert,

Would like to know what is the typical power sequence of processor power rails? I mean below three:

Coincident tracking, Ratiometric tracking, Sequential.

As you know there're ESD diodes inside between different rails, if sequential is used like below, it has risks of ESD diode burnt. 

Can this device realize Coincident tracking/Ratiometric tracking？

  • 0
    TI__Guru 66330 points

    Hello

    UCD90320 is a fully programmable sequencer with monitoring function. customer can configure the device to generate various timing or order ENABLE signal to drive the external power supply.

    UCD90320 only control the ENABLE of the power supply. the slew rate of the ramp up is up to the design of the power supply and which is not controlled by the UCD90320.

    Regards

    Yihe