One example of the invention relates to a power system. The power system can include a switching power converter configured to convert an input voltage to an output voltage for providing power at an output thereof to which a load is connectable. A measurement system can include measurement circuitry configured to measure an average of an accessible current in the power converter during both continuous and discontinuous modes of operation and derive an average measurement of another current in the power converter based on timing control signals used to control operation of the power converter.