公开(公告)号：US20200285259A1

公开(公告)日：2020-09-10

申请号：US16804994

申请日：2020-02-28

Applicant: STMicroelectronics S.r.l.

Inventor： Giovanni Luca TORRISI ,  Salvatore ABBISSO ,  Cristiano MERONI

IPC: G05F1/565 ,  G05F1/575

Abstract: A voltage regulator circuit includes a first voltage regulator having a first output voltage selection pin set and producing a first output voltage based on a first digital signal received at the first output voltage selection pin set, and a second voltage regulator having a second output voltage selection pin set and producing a second output voltage based on a second digital signal received at the second output voltage selection pin set. The first and second voltage regulators are operable in a voltage tracking mode with the output voltage of the second voltage regulator tracking the output voltage of the first voltage regulator when digital signals received at the selection pin sets have a same value. An overvoltage sensor detects overvoltage events at the first voltage regulator. Control circuitry selectively avoids operation in voltage tracking mode as a result of an overvoltage event detected at the first voltage regulator.

公开(公告)号：US20240103046A1

公开(公告)日：2024-03-28

申请号：US18371313

申请日：2023-09-21

Applicant: STMicroelectronics S.r.l.

Inventor： Placido DE VITA ,  Salvatore ABBISSO ,  Giovanni Luca TORRISI ,  Antonio Davide LEONE

IPC: G01R17/16 ,  G01R17/04 ,  G01R19/00 ,  G01R19/165 ,  G01R19/257

CPC classification number: G01R17/16 ,  G01R17/04 ,  G01R19/0023 ,  G01R19/16523 ,  G01R19/257 ,  G05F1/461

Abstract: A pre-driving stage drives one or more Field Effect Transistors in a power stage driving a load. A method for measuring current flowing in the Field Effect Transistors includes: measuring drain to source voltages of the one or more Field Effect Transistor; and measuring an operating temperature of the one or more Field Effect Transistor. The current flowing in the Field Effect Transistors is measured by: calculating the respective on drain to source resistance at the operating temperature as a function of the measured operating temperature and obtaining the current value as a ratio of the respective measured drain to source voltage over the calculated drain to source resistance at the operating temperature.