公开(公告)号：EP4087108A1

公开(公告)日：2022-11-09

申请号：EP22169183.5

申请日：2022-04-21

Applicant: STMicroelectronics S.r.l.

Inventor： CASTELLANO, Gerardo ,  PEDONE, Leonardo ,  MINNELLA, Filippo ,  RAIMONDI, Marcello

IPC: H02M3/158 ,  H02M3/157 ,  H02M1/32 ,  H02M1/084 ,  H02M1/38

Abstract: A control circuit (22b) for a multiphase buck converter is disclosed. The control circuit (22b) comprises a regulator circuit (2222) and a plurality of phase control circuits (2220). The regulator circuit (2222) generates a regulation signal ( REG ) as a function of a feedback signal ( FB ) and a reference signal ( V ref ), and each phase control circuit (2220 1 , ..., 2220 n ) is configured to receive a current sense signal ( CS' ) and generate a respective PWM signal ( PWM' ) as a function of the respective current sense signal ( CS' 1 ) and the regulation signal ( REG ) .
In particular, the control circuit (22b) comprises a first selector circuit (30) and a second selector circuit (32) configured to receive a selection signal ( SEL ) and selectively connect each phase control circuit (2220) of a subset of the phase control circuits (2220) to a PWM signal ( PWM ) to be used to drive (220) a respective stage of the multiphase buck converter, and to current sense signal ( CS ) provided by the respective stage of the multiphase buck converter. A selection control circuit (34) generates the selection signal ( SEL ), in order to connect the phase control circuits (2220) to different stages of the multiphase buck converter.

公开(公告)号：EP4254212A1

公开(公告)日：2023-10-04

申请号：EP23157086.2

申请日：2023-02-16

Applicant: STMicroelectronics S.r.l.

Inventor： CASTELLANO, Gerardo ,  GIORDANO, Antonio ,  RAIMONDI, Marcello

IPC: G06F13/42 ,  B60R21/0132

Abstract: A method to arm an airbag, the method including determining, by a system device (106), that an arming condition for the airbag has been met; delivering a communication to a master device (102) from the system device (106) to inform the master device (102) that the arming condition has been met; snooping the communication by an expansion device (106); and arming the airbag by the expansion device (106) in response to snooping the arming condition.

公开(公告)号：EP4089652A1

公开(公告)日：2022-11-16

申请号：EP22163982.6

申请日：2022-03-24

Applicant: STMicroelectronics S.r.l.

Inventor： CASTELLANO, Gerardo

IPC: G07C5/00 ,  B60R21/00

Abstract: A control circuit (10) for controlling operation of an airbag system, for instance, comprises:
a set of processing units (101, 102, ..., 10N) configured to perform parallel processing of input sensor data signals (x n_se[1:N] ) and produce output data signals (y n_se[1:N] ) as a function of current and past values of said sensor data signals (SD),
random access memory, RAM circuitry (100) comprising a set of RAM sections (100A) configured (1006B) to store sensor data signals,
RAM management circuitry (100B) comprising a buffer circuit (1002B) as well as a controller circuit (1000B) configured to manage the RAM sections (100A) independently of one another via sequences of:
a reading step, during which past values of said sensor data signals read from the RAM sections are stored in the buffer circuit (1002B) and made available to the processing units (101, 102, ..., 10N), and
a writing step, during which current values of the sensor data signals are written into the RAM sections (100A) overwriting therein the past values of the sensor data signals stored in the buffer circuit (1002B) during the reading step.