Device for powering an electronic circuit, in particular a digital circuit, and associated method

A device for powering an electronic circuit that applies at least a first voltage or a second voltage different from the first voltage to the electronic circuit, wherein the first voltage is lower than the second voltage, the device comprising:

• an adaptation controller determining a first frequency associated with the first voltage as a function of at least one operating parameter of the electronic circuit;
• a performance controller that receives information defining a constraint and determines a first duration and a second duration which are such that the operation of the electronic circuit at the first frequency for the first duration and at a second frequency associated with the second voltage for the second duration complies with the constraint, where the first frequency is lower than the second frequency;
• and
• an application circuit including a voltage selector coupled to the first voltage source and the second voltage source, and a transition sequencer or a hop sequencer coupled to the performance controller, the application circuit sequentially applying to the electronic circuit the first voltage and the first frequency for the first duration and the second voltage and the second frequency for the second duration,
• wherein the application circuit executes, at evenly spaced intervals, for each period of a plurality of periods, successively application of the first voltage and the first frequency, and application of the second voltage and the second frequency.