公开(公告)号：US20170188419A1

公开(公告)日：2017-06-29

申请号：US15216561

申请日：2016-07-21

Applicant: STMicroelectronics S.r.l ,  STMicroelectronics Application GMBH

Inventor： Manuel Gaertner ,  Sergio Lecce ,  Giovanni Luca Torrisi

IPC: H05B33/08

CPC classification number: H05B33/0809 ,  B60Q1/1407 ,  B60Q11/005 ,  H05B33/083 ,  H05B33/0845 ,  H05B33/0848

Abstract: An integrated device for driving a lighting load, such as a LED, has a first memory element, configured to store a nominal duty-cycle at a nominal supply voltage. An actual voltage acquisition element is configured to detect an actual supply voltage. A processing unit is coupled to the first memory element and to the actual voltage acquisition element and configured to calculate a voltage compensated duty-cycle. A driver unit is coupled to the processing unit and is configured to be supplied according to the voltage compensated duty-cycle.

公开(公告)号：US20220312566A1

公开(公告)日：2022-09-29

申请号：US17654532

申请日：2022-03-11

Applicant: STMicroelectronics (Grenoble 2) SAS ,  STMicroelectronics S. r. l. ,  STMicroelectronics Application GMBH

Inventor： Manuel Gaertner ,  Philippe Sirito-Olivier ,  Giovanni Luca Torrisi ,  Thomas Urbitsch ,  Christophe Roussel ,  Fritz Burkhardt

IPC: H05B45/46 ,  H05B45/325 ,  H05B45/50 ,  H05B45/14

Abstract: A system includes lighting devices coupled to output supply pins, a microcontroller circuit, and a driver circuit, which receives data therefrom, and switches coupled in series to the lighting devices. The driver circuit includes output supply pins and selectively propagates a supply voltage to the output supply pins to provide respective pulse-width modulated supply signals at the output supply pins. The driver circuit computes duty-cycle values of the pulse-width modulated supply signals as a function of the data received from the microcontroller circuit. The lighting devices include at least one subset coupled to the same output supply pin. The microcontroller individually controls the switches via respective control signals to individually adjust a brightness of the lighting devices in the at least one subset of lighting devices.

公开(公告)号：US20160094022A1

公开(公告)日：2016-03-31

申请号：US14753103

申请日：2015-06-29

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Vanni POLETTO ,  Manuel Gaertner ,  Sergio Lecce ,  Giovanni Luca Torrisi

IPC: H02H3/05 ,  B60R16/03

CPC classification number: H02H3/05 ,  H02H7/0844 ,  H02H7/0851 ,  H02H7/0852 ,  H02H7/09 ,  H03K19/007

Abstract: A fail-safe device may be coupled to a main device for actuating a switch responsive to a failure. The fail-safe device may include a fail-safe circuit, and an isolation trench surrounding the fail-safe circuit and isolating the fail-safe circuit from the main device. The fail-safe device may include an internal power supply connection, an internal reference voltage connection, a self-biased drive block configured to drive the at least one switch, and a receiver configured to receive failure signals from the main device.

Abstract translation: 故障安全装置可以耦合到主装置，用于响应于故障致动开关。 故障保护装置可以包括故障保护电路和围绕故障保护电路的隔离沟槽，并且将故障安全电路与主设备隔离。 故障保护装置可以包括内部电源连接，内部参考电压连接，被配置为驱动至少一个开关的自偏置驱动块，以及被配置为从主设备接收故障信号的接收器。

公开(公告)号：US09929556B2

公开(公告)日：2018-03-27

申请号：US14753103

申请日：2015-06-29

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Vanni Poletto ,  Manuel Gaertner ,  Sergio Lecce ,  Giovanni Luca Torrisi

IPC: H02H3/05 ,  H02H7/085 ,  H02H7/09 ,  H03K19/007 ,  H02H7/08

CPC classification number: H02H3/05 ,  H02H7/0844 ,  H02H7/0851 ,  H02H7/0852 ,  H02H7/09 ,  H03K19/007

Abstract: A fail-safe device may be coupled to a main device for actuating a switch responsive to a failure. The fail-safe device may include a fail-safe circuit, and an isolation trench surrounding the fail-safe circuit and isolating the fail-safe circuit from the main device. The fail-safe device may include an internal power supply connection, an internal reference voltage connection, a self-biased drive block configured to drive the at least one switch, and a receiver configured to receive failure signals from the main device.