Digital controller for switched mode power converter

A circuit comprising:

• a first analog to digital converter configured to convert an analog voltage sample into a digital voltage value;
• a first subtractor configured to subtract a reference voltage from the digital voltage value to determine a delta voltage value;
• an integrator configured to integrate the delta voltage value to determine a reference current value;
• a second analog to digital converter configured to convert an analog current sample received from the power converter into a digital current value;
• a second subtractor configured to subtract the reference current value from the digital current value to determine a delta current value;
• a controller configured to determine a threshold value based on the delta current value;
• and
• a digital pulse width modulator configured to output, to a power converter, a control signal based on the threshold value.

A device comprising:

• means for receiving a voltage value;
• means for comparing the voltage value to a reference voltage value to determine a delta voltage value;
• means for determining a reference current value based on the delta voltage value;
• means for receiving a current value;
• means for comparing the current value to the reference current value to determine a delta current value;
• and
• means for determining a threshold value based on the delta current value, wherein the threshold value is used to define a control signal that controls a power converter.