Post Go back to editing

MAX17577 negative voltage regulation with AD5270

Category: Hardware
Product Number: MAX17577, AD5270

I want to adjust the output voltage of the MAX17577 from -1 to -10V by changing the FB resistor value using the AD5270.

I don't know how to adjust the negative voltage adjustment using a potentiometer.

I would like to get advice or a circuit that can adjust the FB of the negative voltage regulator using the AD5270.


Can you tell me the reference circuit of the AD5270 to adjust the output voltage of the negative voltage regulator (MAX17577)?

Top Replies

Parents
  • Hi Frankie,

    If AD5270 will be on the feedback, i don't think AD5270 is the right digipot for your design as it can only operate between -2.5 V to +2.5 V. Applying any voltage less than -2.5 V to any terminal of the digipot would trigger ESD diodes inside. I might be missing something on why you plan to use AD5270 operating from -1 V to -10 V.Can you provide a block diagram or schematic regarding this one? Thank you.

    Best Regards,

    Yokki

Reply
  • Hi Frankie,

    If AD5270 will be on the feedback, i don't think AD5270 is the right digipot for your design as it can only operate between -2.5 V to +2.5 V. Applying any voltage less than -2.5 V to any terminal of the digipot would trigger ESD diodes inside. I might be missing something on why you plan to use AD5270 operating from -1 V to -10 V.Can you provide a block diagram or schematic regarding this one? Thank you.

    Best Regards,

    Yokki

Children
No Data