Negative voltage feedback generator

A method comprising:

• receiving only a negative voltage in a negative voltage domain at an input of a voltage-to-current converter;
• converting the negative voltage into a corresponding current using the voltage-to-current converter based on a difference between the negative voltage and a constant reference voltage;
• converting the corresponding current in the negative domain to a transferred current in a positive domain;
• and
• generating a positive voltage in the positive domain that corresponds to the transferred current.

A processing system comprising:

• a voltage-to-current converter configured to receive a negative voltage in a negative domain as an input and output a current based on a difference between the negative voltage and a constant reference voltage;
• a converter configured to receive the output current from the voltage-to-current converter and convert the output current in the negative domain to a transferred current in a positive domain;
• a current-to-voltage converter configured to generate a positive voltage in the positive domain that corresponds to the transferred current;
• and
• an error compensator coupled to an output of the current-to-voltage converter to receive the positive voltage, the error compensator is configured to compare the positive voltage to a positive reference voltage to regulate a supply voltage in the processing system.