Patent ID: 11916480
Assignee: STMICROELECTRONICS (GRENOBLE 2) SAS
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 23:
24. A circuit, comprising:
a first switching transistor having a current path coupled to an output terminal;
a first driver having an output coupled to a control terminal of the first switching transistor, an input configured to receive a first controlling signal, and first and second supply terminals, the first driver configured to control the switching of the first switching transistor based on the first controlling signal to regulate an output voltage at the output terminal to a target value;
a low drop-out voltage regulator having an input coupled to the output terminal, and an output coupled to the first supply terminal of the first driver, the low drop-out voltage regulator configured to deliver at the output of the low drop-out voltage regulator an intermediate regulated voltage from the output voltage to power the first driver; and
a circuit configured to deliver a regulator set point value of the intermediate regulated voltage to the low drop-out voltage regulator, the regular set point value selected from among a plurality of regulator set point values according to an operating mode of the circuit among a plurality of operating modes.