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公开(公告)号：US20180308418A1
公开(公告)日：2018-10-25
申请号：US15499400
申请日：2017-04-27
Applicant: Infineon Technologies AG
Inventor： Andrea Scenini
IPC: G09G3/32
CPC classification number: G09G3/32 , G09G2300/0404 , G09G2310/0237 , G09G2310/0286 , G09G2320/0295 , G09G2320/041 , G09G2320/0693 , G09G2360/18 , H05B33/0854
Abstract: In some examples, a device includes at least two light sources, buffer circuitry configured to receive a bit stream, and driver circuitry configured to receive the bit stream from the buffer circuitry and to drive the at least two light sources based on the bit stream. In some examples, the device further includes monitor circuitry configured to determine a voltage drop across each light source of the at least two light sources and snooping circuitry configured to read an inactive bit of the bit stream. In some examples, the snooping circuitry is further configured to read an active bit of the bit stream after reading the inactive bit and based on a value of the inactive bit and to cause the monitor circuitry to determine a voltage drop across a light source of the at least two light sources based on a value of the active bit.
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公开(公告)号：US09918367B1
公开(公告)日：2018-03-13
申请号：US15355779
申请日：2016-11-18
Applicant: Infineon Technologies AG
Inventor： Andrea Scenini , Adolfo De Cicco , Rosario Chiodo
IPC: H05B37/00 , H05B33/08 , B60Q1/14 , F21V23/00 , F21Y115/10
CPC classification number: H05B33/0809 , B60Q1/1415 , F21V23/005 , F21Y2115/10 , H05B33/0815 , H05B33/0845 , H05B33/0851 , H05B33/0887
Abstract: Current source regulation circuitry that is arranged in a loop with power supply circuitry and current source circuitry. The current source regulation circuitry is configured to control the magnitude of supply voltage output by the power supply circuitry in order to maintain the voltage drop across each one current source of the current source circuitry to within a bounded range of voltage values. The bounded range of voltage values may be defined such that each one current source of the current source circuitry can properly regulate a drive current that is supplied to a corresponding light source coupled thereto, and such that the amount of power dissipated by each current source of the current source circuitry during operation is maintained within an acceptable range.
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公开(公告)号：US09292028B2
公开(公告)日：2016-03-22
申请号：US13624696
申请日：2012-09-21
Applicant: Infineon Technologies AG
Inventor： Giovanni Capodivacca , Paolo Milanesi , Andrea Scenini
CPC classification number: G05F1/468 , H05B33/0815 , H05B33/0854
Abstract: A control circuit can control the operation of a switching converter to provide a regulated load current to a load. The switching converter includes an inductor and a high-side and a low side-transistor for switching the load current provided via the inductor. A digital modulator is configured to provide a modulated signal having a duty cycle determined by a digital duty cycle value. A current sense circuit is coupled to at least one of the transistors and is configured to regularly sample a load current value. A comparator is coupled to the current sense circuit and is configured to compare the sampled load current value with a first threshold and to provide a respective comparator output signal. A regulator is configured to receive the comparator output signal and to calculate an updated digital duty cycle value.
Abstract translation: 控制电路可以控制开关转换器的操作以向负载提供调节的负载电流。 开关转换器包括电感器和用于切换经由电感器提供的负载电流的高侧和低侧晶体管。 数字调制器被配置为提供具有由数字占空比值确定的占空比的调制信号。 电流感测电路耦合到晶体管中的至少一个，并被配置为定期对负载电流值进行采样。 比较器耦合到电流感测电路，并且被配置为将采样的负载电流值与第一阈值进行比较，并提供相应的比较器输出信号。 调节器被配置为接收比较器输出信号并计算更新的数字占空比值。
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公开(公告)号：US20130082675A1
公开(公告)日：2013-04-04
申请号：US13624696
申请日：2012-09-21
Applicant: INFINEON TECHNOLOGIES AG
Inventor： Giovanni Capodivacca , Paolo Milanesi , Andrea Scenini
IPC: G05F1/46
CPC classification number: G05F1/468 , H05B33/0815 , H05B33/0854
Abstract: A control circuit can control the operation of a switching converter to provide a regulated load current to a load. The switching converter includes an inductor and a high-side and a low side-transistor for switching the load current provided via the inductor. A digital modulator is configured to provide a modulated signal having a duty cycle determined by a digital duty cycle value. A current sense circuit is coupled to at least one of the transistors and is configured to regularly sample a load current value. A comparator is coupled to the current sense circuit and is configured to compare the sampled load current value with a first threshold and to provide a respective comparator output signal. A regulator is configured to receive the comparator output signal and to calculate an updated digital duty cycle value.
Abstract translation: 控制电路可以控制开关转换器的操作以向负载提供调节的负载电流。 开关转换器包括电感器和用于切换经由电感器提供的负载电流的高侧和低侧晶体管。 数字调制器被配置为提供具有由数字占空比值确定的占空比的调制信号。 电流感测电路耦合到晶体管中的至少一个，并被配置为定期对负载电流值进行采样。 比较器耦合到电流感测电路，并且被配置为将采样的负载电流值与第一阈值进行比较，并提供相应的比较器输出信号。 调节器被配置为接收比较器输出信号并计算更新的数字占空比值。
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5.发明授权公开(公告)号：US11358518B2
公开(公告)日：2022-06-14
申请号：US17064526
申请日：2020-10-06
Applicant: Infineon Technologies AG
Inventor： Gernot Unterweger , Adolfo De Cicco , Pietro Vallese , Andrea Scenini
Abstract: A vehicle headlamp control circuit may be configured to control a vehicle headlamp comprising a plurality of lighting elements. The vehicle headlamp control circuit may comprise a first communication interface configured to receive a first signal comprising a first set of values for driving the plurality of lighting elements, and a second communication interface configured to receive a second signal comprising an intensity threshold. The circuit may be configured to determine a composite intensity associated with the first set of values and drive the plurality of lighting elements using the first set of values if the composite intensity associated with the first set of values satisfies the intensity threshold.
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Patent Agency Ranking
6.发明授权公开(公告)号：US11318878B2
公开(公告)日：2022-05-03
申请号：US16601230
申请日：2019-10-14
Applicant: Infineon Technologies AG
Inventor： Gernot Unterweger , Tobias Schuster , Andrea Scenini , Christof Michenthaler
Abstract: A circuit may be configured to control a vehicle headlamp comprising light emitting diodes (LEDs). The circuit may comprise an LED controller configured to receive video data from a video source via a first interface; an LED driver configured to drive the LEDs based at least in part on the video data; and a second interface between the LED controller and the LED driver, wherein the second interface is configured to communicate the video data from the LED controller to the LED driver and wherein the second interface communicates the video data at a slower data rate than the first interface.
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7.发明申请公开(公告)号：US20220105862A1
公开(公告)日：2022-04-07
申请号：US17064526
申请日：2020-10-06
Applicant: Infineon Technologies AG
Inventor： Gernot Unterweger , Adolfo De Cicco , Pietro Vallese , Andrea Scenini
Abstract: A vehicle headlamp control circuit may be configured to control a vehicle headlamp comprising a plurality of lighting elements. The vehicle headlamp control circuit may comprise a first communication interface configured to receive a first signal comprising a first set of values for driving the plurality of lighting elements, and a second communication interface configured to receive a second signal comprising an intensity threshold. The circuit may be configured to determine a composite intensity associated with the first set of values and drive the plurality of lighting elements using the first set of values if the composite intensity associated with the first set of values satisfies the intensity threshold.
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公开(公告)号：US10652981B1
公开(公告)日：2020-05-12
申请号：US16595154
申请日：2019-10-07
Applicant: Infineon Technologies AG
Inventor： Adolfo De Cicco , Rosario Chiodo , Davide Ghedin , Andrea Scenini
Abstract: A method may include, based on a plurality of duty cycles each associated with a respective one of a plurality of LEDs, determining a first set of drive schemes such that each drive scheme is associated with a respective one of the plurality of LEDs and is dependent on the duty cycle associated with the respective one of the plurality of LEDs. The method further includes driving each of the plurality of LEDs in accordance with the associated drive scheme of the first set in at least one drive cycle. Each of the plurality of drive schemes includes one or more on-times each having a phase and a duration. The method may include driving each of the plurality of LEDs in an on-state or an off-state dependent on the respective drive scheme and determining the drive scheme dependent on the drive scheme of another one of the plurality of LEDs.
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公开(公告)号：US10321533B2
公开(公告)日：2019-06-11
申请号：US15691526
申请日：2017-08-30
Applicant: Infineon Technologies AG
Inventor： Andrea Scenini , Giovanni Capodivacca , Adolfo De Cicco
IPC: H05B33/08
Abstract: A device for driving several light sources is provided, wherein the several light sources are arranged in a matrix structure; wherein the several light sources of the matrix structure are connected to a semiconductor device; wherein a portion of the semiconductor device corresponds to a light source of the matrix structure, wherein the portion of the semiconductor device comprises a diagnosis function which when activated is arranged for supplying an output diagnosis signal.
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公开(公告)号：US20180070417A1
公开(公告)日：2018-03-08
申请号：US15260055
申请日：2016-09-08
Applicant: Infineon Technologies AG
Inventor： Maurizio Galvano , Adolfo De Cicco , Andrea Scenini
CPC classification number: H05B33/0815 , H05B33/0827 , H05B33/0845 , H05B33/0884 , H05B33/0896 , H05B37/0272
Abstract: According to an example, a device is provided for driving several light sources, wherein the device is arranged to sense a supply signal and apply a phase shift to a switching signal of at least one of the several light sources based on the sensed supply signal. Also, accordingly a method, a lighting device, a computer program product and a computer-readable medium are suggested.
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