公开(公告)号：US20180352624A1

公开(公告)日：2018-12-06

申请号：US15608227

申请日：2017-05-30

Applicant: Infineon Technologies AG

Inventor： Franco Mignoli

IPC: H05B33/08

CPC classification number: H05B33/0848 ,  G09G3/3241 ,  G09G3/3283 ,  H05B33/0815 ,  H05B33/0824

Abstract: In an example, a method includes sequentially coupling, by a switching module of a circuit, each cell of the plurality of cells to a driver module. Each cell of the plurality of cells includes a light emitting diode (LED) configured to activate based on a control voltage at a respective cell. The method further includes driving, by the driver module, the control voltage of a respective cell of the plurality of cells based on a reference current when the switching module sequentially couples a respective cell of the plurality of cells to the driver module.

公开(公告)号：US10149361B1

公开(公告)日：2018-12-04

申请号：US15608227

申请日：2017-05-30

Applicant: Infineon Technologies AG

Inventor： Franco Mignoli

IPC: G09G3/20 ,  H05B33/08 ,  G09G3/3283 ,  G09G3/3241

CPC classification number: H05B33/0848 ,  G09G3/3241 ,  G09G3/3283 ,  H05B33/0815 ,  H05B33/0824

Abstract: A method includes sequentially coupling, by a switching module of a circuit, each cell of a plurality of cells to a driver module. Each cell of the plurality of cells includes a light emitting diode (LED) configured to activate based on a control voltage at a respective cell of the plurality of cells. The method includes driving, by the driver module, the control voltage of the respective cell based on a reference current when the switching module sequentially couples the respective cell to the driver module.

公开(公告)号：US11882635B1

公开(公告)日：2024-01-23

申请号：US18301674

申请日：2023-04-17

Applicant: Infineon Technologies AG

Inventor： Luca Mengani ,  Franco Mignoli

IPC: H05B45/50 ,  G06F11/07 ,  H05B45/30

CPC classification number: H05B45/50 ,  G06F11/0793 ,  G06F11/0796 ,  H05B45/30

Abstract: In some examples, this disclosure describes a light-emitting diode (LED) driver circuit comprising a set of LED drivers, wherein each LED driver of the set of LED drivers is configured to control one or more LEDs of a set of LEDs. Additionally, the LED driver circuit comprises a core computing device configured to receive LED control information, compare primary path LED driver control output data with secondary path LED driver control output data to detect whether one or more error conditions are present in the core computing device, receive channel status feedback information, compare the secondary path LED driver control output data with the channel status feedback information to detect whether one or more error conditions are present in the set of LED drivers or in the set of LEDs, and trigger, based on determining that one or more error conditions are present, one or more remedial actions.

公开(公告)号：US11452190B2

公开(公告)日：2022-09-20

申请号：US16945021

申请日：2020-07-31

Applicant: Infineon Technologies AG

Inventor： Franco Mignoli ,  Hans-Peter Kreuter ,  Alfonso Nasciuti ,  Marco Pamato ,  Damiano Sartori

IPC: H05B45/52 ,  H05B45/10 ,  H05B47/155 ,  G01R31/52 ,  G01R31/26

Abstract: This disclosure includes systems, methods, and techniques for detecting one or more short connections in a plurality of light-emitting diode (LED) channels. For example, a circuit includes processing circuitry configured to control a plurality of driving devices in order to cause a pair of LED channels of the plurality of LED channels to operate in a first state during a first period of time and operate in a second state during a second period of time. Additionally, the processing circuitry is configured to compare a first electrical signal corresponding to the first state of the pair of LED channels and a second electrical signal corresponding to the second state of the pair of LED channels and determine, based on the comparison of the first electrical signal and the second electrical signal, if a short connection exists between the pair of LED channels.

公开(公告)号：US11324087B1

公开(公告)日：2022-05-03

申请号：US17132255

申请日：2020-12-23

Applicant: Infineon Technologies AG

Inventor： Hans-Peter Kreuter ,  Christof Michenthaler ,  Franco Mignoli ,  Salvatore Sanna ,  Alfonso Nasciuti ,  Andrea Scenini

IPC: H05B45/30 ,  H05B47/18 ,  H05B45/14 ,  H05B45/54 ,  G05B19/042

Abstract: A method for driving a set of light emitting diodes (LEDs) may include receiving a write access frame by a driver via a bus configured for connection with a controller and the driver. The write access frame includes brightness information. The method may further include controlling, by the driver, the set of LEDs based on the brightness information and determining, by the driver, safety information while controlling the set of LEDs based on the brightness information. The method may further include outputting, by the driver and at the bus, the safety information to acknowledge receipt of the write access frame.

公开(公告)号：US20180278017A1

公开(公告)日：2018-09-27

申请号：US15923823

申请日：2018-03-16

Applicant: Infineon Technologies AG

Inventor： Franco Mignoli ,  Maurizio Galvano ,  Andrea Logiudice

IPC: H01S5/042

Abstract: A driver circuit for driving a laser diode is described herein. In accordance with a first exemplary embodiment the driver circuit includes a first electronic switch connected to an output node that is configured to be operably connected to a laser diode. The electric connection between the first electronic switch and the output node has a first inductance. The driver circuit further includes a bypass circuit that is coupled to the output node and configured to take over, when activated, the current supplied to the output node via the first electronic switch, thus magnetizing the first inductance.