公开(公告)号：EP3920410A1

公开(公告)日：2021-12-08

申请号：EP21305639.3

申请日：2021-05-17

Applicant: STMicroelectronics (ALPS) SAS ,  STMicroelectronics Application GmbH ,  STMicroelectronics S.r.l.

Inventor： OCCHIPINTI, Aldo ,  ROUSSEL, Christophe ,  BURKHARDT, Fritz ,  TESTONI, Ignazio

IPC: H02P29/024 ,  H02P29/028

Abstract: A driver circuit (30) comprises a power supply pin (300) configured to receive a power supply voltage ( V s ), and a set of control pins (302a, 302b, 304a, 304b) configured to provide a set of control signals for controlling the switching activity of a set of switches of an h-bridge circuit. The set of switches of the h-bridge circuit comprises a pair of high-side switches and a pair of low-side switches.
The driver circuit (30) comprises control circuitry (36) coupled (32a, 32b, 34a, 34b) to the control pins (302a, 302b, 304a, 304b) and configured to generate the control signals, and sensing circuitry (38, 360) coupled to the power supply pin (300) and configured to generate a detection signal indicative of said power supply voltage ( V s ) exceeding a threshold value.
The control circuitry (36) is sensitive to the detection signal and is configured to generate said control signals to activate one of said pair of high-side switches and said pair of low-side switches and deactivate the other of said pair of high-side switches and said pair of low-side switches as a result of said detection signal being indicative of said power supply voltage ( V s ) exceeding said threshold value.

公开(公告)号：EP3726723A1

公开(公告)日：2020-10-21

申请号：EP20305284.0

申请日：2020-03-19

Applicant: STMicroelectronics (ALPS) SAS ,  STMicroelectronics S.r.l.

Inventor： TORRISI, Giovanni Luca ,  PORTO, Domenico aka Massimo ,  ROUSSEL, Christophe

IPC: H02P7/03

Abstract: A method, comprising:
- a) providing a H-bridge circuit including a supply node configured to be coupled to a supply voltage (VDD) as well as a first pair of transistors (QH1, QL1) and a second pair of transistors (QH2, QL2), each pair of transistors including a first transistor (QH1; QH2) and a second transistor (QL1; QL2), wherein:
- the first transistors (QH1; QH2) in the two pairs of transistors (QH1, QL1; QH2, QL2) have the current paths therethrough included in respective current flow lines between the supply node (VDD) and a first output node (EH1) and between the supply node (VDD) and a second output node (EH2), respectively, and
- the second transistors (QL1; QL2) in the two pairs of transistors (QH1, QL1; QH2, QL2) have the current paths therethrough coupled to a third output node (EL1) and a fourth output node (EL2), respectively, the first output node (EH1) and the third output node (EL1) mutually isolated from each other and the second output node (EH2) and the fourth output node (EL2) mutually isolated from each other,

b) operating the H-bridge circuit in a selected one of a plurality of modes, the plurality of modes comprising a first, a second and a third mode.

公开(公告)号：EP4064794A2

公开(公告)日：2022-09-28

申请号：EP22305278.8

申请日：2022-03-11

Applicant: STMICROELECTRONICS (GRENOBLE 2) SAS ,  STMicroelectronics S.r.l. ,  STMicroelectronics Application GmbH

Inventor： GAERTNER, Manuel ,  SIRITO-OLIVIER, Philippe ,  TORRISI, Giovanni Luca ,  URBITSCH, Thomas ,  ROUSSEL, Christophe ,  BURKHARDT, Fritz

IPC: H05B45/37 ,  H05B45/325 ,  H05B45/10 ,  H05B45/46 ,  H05B45/52 ,  H05B47/25 ,  H02M3/335 ,  B60Q11/00 ,  B60Q1/14

Abstract: A system (100') comprises a microcontroller unit (102) and a driver device (101) coupled (105) to the microcontroller unit (102) to receive data therefrom. The driver device (101) comprises a plurality of output supply pins (101C 1 , ..., 101C n ) and is configured to selectively propagate (30 1 , ..., 30 n ) a supply voltage ( V BAT ) to the output supply pins (101C 1 , ..., 101C n ) to provide respective pulse-width modulated supply signals ( V BAT,1 , ..., V BAT,n ) at the output supply pins (101C 1 , ..., 101C n ). The driver device (101) is configured to compute respective duty-cycle values of the pulse-width modulated supply signals ( V BAT,1 , ..., V BAT,n ) as a function of the data received from the microcontroller unit (102) . The system further comprises a plurality of lighting devices (31 1,1 , ..., 31 1,m , 31 n ) coupled to the plurality of output supply pins (101C 1 , ..., 101C n ). The plurality of lighting devices (31 1,1 , ..., 31 1,m , 31 n ) comprises at least one subset of lighting devices (31 1,1 , ..., 31 1,m ) coupled to a same output supply pin (101C 1 ) in the plurality of output supply pins (101C 1 , ..., 101C n ). The system further comprises a set of respective electronic switches coupled in series to the lighting devices in the at least one subset of lighting devices (31 1,1 , ..., 31 1,m ). The microcontroller unit (102) is configured to individually control the electronic switches via respective control signals ( P 1,1 , ..., P 1,m ) to individually adjust a brightness of the lighting devices in the at least one subset of lighting devices (31 1,1 , ..., 31 1,m ).

公开(公告)号：EP4064794A3

公开(公告)日：2023-01-18

申请号：EP22305278.8

申请日：2022-03-11

Applicant: STMICROELECTRONICS (GRENOBLE 2) SAS ,  STMicroelectronics S.r.l. ,  STMicroelectronics Application GmbH

Inventor： GAERTNER, Manuel ,  SIRITO-OLIVIER, Philippe ,  TORRISI, Giovanni Luca ,  URBITSCH, Thomas ,  ROUSSEL, Christophe ,  BURKHARDT, Fritz

IPC: H05B45/37 ,  H05B45/325 ,  H05B45/10 ,  H05B45/46 ,  H05B45/52 ,  H05B47/25 ,  H02M3/335 ,  B60Q11/00 ,  B60Q1/14

Abstract: A system (100') comprises a microcontroller unit (102) and a driver device (101) coupled (105) to the microcontroller unit (102) to receive data therefrom. The driver device (101) comprises a plurality of output supply pins (101C 1 , ..., 101C n ) and is configured to selectively propagate (30 1 , ..., 30 n ) a supply voltage ( V BAT ) to the output supply pins (101C 1 , ..., 101C n ) to provide respective pulse-width modulated supply signals ( V BAT,1 , ..., V BAT,n ) at the output supply pins (101C 1 , ..., 101C n ). The driver device (101) is configured to compute respective duty-cycle values of the pulse-width modulated supply signals ( V BAT,1 , ..., V BAT,n ) as a function of the data received from the microcontroller unit (102) . The system further comprises a plurality of lighting devices (31 1,1 , ..., 31 1,m , 31 n ) coupled to the plurality of output supply pins (101C 1 , ..., 101C n ). The plurality of lighting devices (31 1,1 , ..., 31 1,m , 31 n ) comprises at least one subset of lighting devices (31 1,1 , ..., 31 1,m ) coupled to a same output supply pin (101C 1 ) in the plurality of output supply pins (101C 1 , ..., 101C n ). The system further comprises a set of respective electronic switches coupled in series to the lighting devices in the at least one subset of lighting devices (31 1,1 , ..., 31 1,m ). The microcontroller unit (102) is configured to individually control the electronic switches via respective control signals ( P 1,1 , ..., P 1,m ) to individually adjust a brightness of the lighting devices in the at least one subset of lighting devices (31 1,1 , ..., 31 1,m ).