The output voltage of a power converter is regulated by comparing the output
voltage to a target output voltage during a first time interval and calculating
an inductor current required in a second time interval immediately following the
first time interval to increase the output voltage to the target output voltage
in the second time interval. The duty cycle of a switch in the power converter
is varied to modify the current in the inductor during the second time interval
according to the calculated next current and a saturation current of the inductor.
In one embodiment the power converter includes a reference resistor. By measuring
the voltage across the reference resistor at certain times various parameters,
including coil inductance and capacitor capacitance, are calculated. In some embodiments
a linear model of the power converter is used.
