AD5141 in feedback loop of buck regulator

Hello,

We intend to use a AD5141 in the feedback loop of a buck regulator, for example as RFB2 with an ADP2300. Can this be considered a 'common use' of the AD5141 or do we have to expect problems compared to using a standard resistor?

many thanks and kind regards, Felix

Parents
  • Hello Koushik,

    Many thanks for your response. However I don't understand what you mean by point 1.

    In my ADP2300 example I suggested to use the digipot as RFB2 replacement. Since the voltage across RFB2 is typically 0.8V I don't understand what you mean by

    The output voltage of the regulator should be less than the maximum allowable voltage at the terminal of the digipot. In this case if the output voltage is 28V in the regulator, AD5141 cannot be used as the maximum voltage at the terminal is+7V

    Or was this just a general comment without relation to my example? Points 2. and 3. are clear.

    regards, Felix

Reply
  • Hello Koushik,

    Many thanks for your response. However I don't understand what you mean by point 1.

    In my ADP2300 example I suggested to use the digipot as RFB2 replacement. Since the voltage across RFB2 is typically 0.8V I don't understand what you mean by

    The output voltage of the regulator should be less than the maximum allowable voltage at the terminal of the digipot. In this case if the output voltage is 28V in the regulator, AD5141 cannot be used as the maximum voltage at the terminal is+7V

    Or was this just a general comment without relation to my example? Points 2. and 3. are clear.

    regards, Felix

Children
No Data