US 11,698,651 B2
Device and method for electronic circuit power
Nicolas Demange, Saint-Maximin la Sainte Baume (FR); Nicolas Borrel, Gardanne (FR); and Jimmy Fort, Puyloubier (FR)
Assigned to STMicroelectronics (Rousset) SAS, Rousset (FR)
Filed by STMicroelectronics (Rousset) SAS, Rousset (FR)
Filed on Aug. 11, 2021, as Appl. No. 17/399,674.
Claims priority of application No. 2008675 (FR), filed on Aug. 25, 2020.
Prior Publication US 2022/0066488 A1, Mar. 3, 2022
Int. Cl. G05F 1/56 (2006.01); G06F 21/75 (2013.01)
CPC G05F 1/56 (2013.01) [G06F 21/755 (2017.08)] 20 Claims
OG exemplary drawing
 
1. A device for powering an electronic circuit, the device comprising:
a first transistor having a drain terminal coupled to a node, a first current flowing at the drain terminal of the first transistor;
a second transistor having a drain terminal coupled to the electronic circuit, a second current flowing at the drain terminal of the second transistor that is an image of the first current, a control terminal of the first transistor coupled to a control terminal of the second transistor;
a third transistor having a drain terminal coupled to the node, a third current flowing at the drain terminal of the third transistor;
a resistive element coupled to the node, a fourth constant current flowing through the resistive element;
a fourth transistor having a control terminal coupled to a control terminal of the third transistor, a fifth current flowing at a drain terminal of the fourth transistor that is an image of the third current; and
a fifth transistor configured to regulate a potential of the node by acting on a control terminal of the fifth transistor electrically in series with the drain terminal of the fourth transistor.