Device and method for electronic circuit power

A method of supplying power to an electronic circuit, the method comprising:

• flowing, through a first conductor connected to a node, a first current that is an image of a second current consumed by the electronic circuit;
• flowing a third current through a second conductor connected to the node, a first branch of a current mirror conducting the third current;
• flowing a fourth constant current through a third conductor connected to the node;
• consuming a fifth current that is an image of the third current;
• and
• regulating a potential of the node by acting on a gate potential of a transistor electrically in series with a second branch of the current mirror.

An electronic chip comprising:

• an electronic circuit;
• and
• a device configured to power the electronic circuit, and configured to:
• flow, through a first conductor connected to a node, a first current that is an image of a second current consumed by the electronic circuit;
• flow a third current through a second conductor connected to the node, a first branch of a current mirror conducting the third current;
• flow a fourth constant current through a third conductor connected to the node;
• consume a fifth current that is an image of the third current;
• and
• regulate a potential of the node by acting on a gate potential of a transistor electrically in series with a second branch of the current mirror.