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PMIC DVS step 1 or 2mv

Kevin Huang67
Intellectual 410 points
Other Parts Discussed in Thread: TPS40422, LP87565-Q1, TPS544B20

Hi sir,

Please help to look for low DVS step PMIC.

TI PMIC VOUT 0.75V +-20%, Sense pin , I2C control DVS step 1 or 2mV

or what's your PMIC DVS step minimum value? Thanks !

  • 0
    TI__Genius 12735 points

    Hi Kevin,

    Are you looking for a single output voltage regulator? Or are you looking for a more comprehensive PMIC style solution for a specific use case? What load currents, regulation type (LDO vs Buck), efficiency, etc are you looking for?

    Best regards,

    Layne J

  • 0 in reply to Layne J
    Intellectual 410 points

    Hi Layne,

    We need two buck output of I2C controlled: Voltage range: 0.75V +/- 20%, DVS step : 1 or 2 mV, CURRENT : 1.5A, Differential sense feedback.

    –Usually 7-8 bit voltage control is good enough to generate good quality sine wave
    –1-2 mV step will allow us to generate 10 mV and bigger sine wave

    In fact,we need to do some  power testing for chip. Do you have such PMIC ?

    •We want to generate low frequency voltage ripple by sending a sequence of I2C commands from CPLD to power supply:
    –Ripple frequency: 1-10 KHz
    –Ripple value (p-p): from 10mV to 200mV
    –Ripple waveforms: sine, triangular, square
    •We want to apply high frequency voltage noise by mixing it to supply voltage:
    –Noise frequency: 100KHz - 10MHz
    –Noise value (p-p): from 10mV to 200mV
    –Noise waveforms: sine
  • 0 in reply to Kevin Huang67
    TI__Genius 12735 points

    Hi Kevin,

    I do not have anything in mind that will work perfectly for your situation but if you are okay with using single output bucks you can take a look at TPS544B20 (single buck converter) or TPS40422 (single buck controller), although these are 20A bucks. If you must use one single PMIC device you could take a look at LP87565-Q1 but that device does not fit your request as well.

    Best regards,

    Layne J