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公开(公告)号：US09781788B1
公开(公告)日：2017-10-03
申请号：US15087062
申请日：2016-03-31
CPC分类号： H05B33/0815 , G05F1/56 , H02M1/08 , H02M3/156 , H05B33/0812 , Y02B20/343 , Y02B20/345
摘要： In one example, a method includes generating, by a current source of a device, a first portion of a power signal that drives one or more load elements. In this example, a second portion of the power signal is generated by one or more components that are external to the device and are in parallel to the current source such that the second portion of the power signal does not flow through the current source.
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公开(公告)号：US20170257917A1
公开(公告)日：2017-09-07
申请号：US15060127
申请日：2016-03-03
IPC分类号： H05B33/08
CPC分类号： H05B33/0818 , H05B33/0815 , H05B33/0845 , Y02B20/347
摘要： A modulation engine for a light-emitting-diode (LED) driver is described that includes an output port, a charge current source, a discharge current source, and an output control unit. The output control unit is configured to generate a modulation signal (e.g., a pulse-width-modulation signal) at the output port by at least alternating, based on a duty cycle of the modulation signal, between coupling the charge current source to the output port and the discharge current source to the output port to linearly shape the charge at the output port in accordance with the duty cycle.
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公开(公告)号：US20170367155A1
公开(公告)日：2017-12-21
申请号：US15690793
申请日：2017-08-30
CPC分类号： H05B33/0815 , G05F1/56 , H02M1/08 , H02M3/156 , H05B33/0812 , Y02B20/343 , Y02B20/345
摘要： In one example, a method includes generating, by a current source of a device, a first portion of a power signal that drives one or more load elements. In this example, a second portion of the power signal is generated by one or more components that are external to the device and are in parallel to the current source such that the second portion of the power signal does not flow through the current source.
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公开(公告)号：US20170192224A1
公开(公告)日：2017-07-06
申请号：US14984850
申请日：2015-12-30
摘要： Systems and methods are disclosed for a pixelated light source that includes a plurality of pixels; a plurality of digital micromirrors configured to receive input light from the pixelated light source and configured to modify the input light to generate output light; and one or more controllers configured to control both the pixelated light source and the plurality of digital micromirrors to condition the output light.
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公开(公告)号：US09672181B2
公开(公告)日：2017-06-06
申请号：US14794436
申请日：2015-07-08
IPC分类号： G06F13/00 , G06F13/40 , H04L29/12 , H04L12/403 , G06F13/364 , H04L25/02 , H04L12/26 , H04L12/40
CPC分类号： G06F13/404 , G06F13/364 , H04L12/403 , H04L25/028 , H04L43/50 , H04L61/2038 , H04L2012/40234 , Y04S40/168
摘要： A system includes a bus system, such as a LIN bus system. A number of components are connected to the bus system. A first component of the components is configured to detect a direction of a current to detect a location of the first component in the bus system. Each of the components can have a unique address.
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公开(公告)号：US20140077782A1
公开(公告)日：2014-03-20
申请号：US14018878
申请日：2013-09-05
IPC分类号： H02M3/156
CPC分类号： H02M3/156 , H02H3/08 , H02J2007/0039 , H03K17/0822
摘要： A semiconductor device is described that includes a switch to switch a load current path on and off according to an input signal. The device further includes an over-current detector to compare a load current with a threshold and to signal an over-current when the load current reaches or exceeds the threshold. The device further includes a control unit to set the threshold to a higher value while in a first state of operation and to a lower value while in a second state of operation, and to at least temporarily switch the switch off when an over-current is signalled, change from the first state of operation to the second state of operation when a first pre-defined time span has elapsed, and to change from the from the second state of operation to the first state when the switch is off for more than a second pre-defined time span.
摘要翻译： 描述了一种半导体器件，其包括根据输入信号来打开和关闭负载电流路径的开关。 该装置还包括过电流检测器，用于将负载电流与阈值进行比较，并在负载电流达到或超过阈值时向其发出过电流信号。 该装置还包括控制单元，用于在第一操作状态下将阈值设置为较高值，而在第二操作状态下将阈值设置为较低值，并且至少在过电流为 发信号时，当经过第一预定时间跨度时从第一操作状态改变到第二操作状态，并且当开关断开多于一个时间时从第二操作状态变为第一状态 第二预定义时间跨度。
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公开(公告)号：US10939528B2
公开(公告)日：2021-03-02
申请号：US16566768
申请日：2019-09-10
摘要： An electronic circuit and a method are disclosed. The electronic circuit includes an LED circuit, wherein the LED circuit (1) includes: an input (11, 12) configured to receive an input voltage (VIN); a drive circuit (2A) connected to the input (11, 12); and an LED module (3A) connected to the drive circuit (2A) and comprising an LED string (41) with at least one LED. The drive circuit (2A) is configured to monitor the LED module (3A) for the occurrence of an LED short in the LED string (41) and to change from a normal mode to a defect mode upon detection of the LED short, and the drive circuit (2A) is configured, in the defect mode, to operate the LED string (41) in at least one defect cycle that includes deactivating the LED string (41) for a deactivation period, activating the LED string for an activation period, and checking for the persistence of the LED short in the activation period.
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公开(公告)号：US10670859B2
公开(公告)日：2020-06-02
申请号：US14984850
申请日：2015-12-30
IPC分类号： F21V7/00 , G02B26/08 , F21S41/141 , F21S41/25 , F21S41/663 , F21S41/675 , H05B45/00 , H05B45/10 , H05B47/105 , B60Q1/08 , G03B21/00 , F21Y115/10
摘要： Systems and methods are disclosed for a pixelated light source that includes a plurality of pixels; a plurality of digital micromirrors configured to receive input light from the pixelated light source and configured to modify the input light to generate output light; and one or more controllers configured to control both the pixelated light source and the plurality of digital micromirrors to condition the output light.
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公开(公告)号：US20170290112A1
公开(公告)日：2017-10-05
申请号：US15087062
申请日：2016-03-31
CPC分类号： H05B33/0815 , G05F1/56 , H02M1/08 , H02M3/156 , H05B33/0812 , Y02B20/343 , Y02B20/345
摘要： In one example, a method includes generating, by a current source of a device, a first portion of a power signal that drives one or more load elements. In this example, a second portion of the power signal is generated by one or more components that are external to the device and are in parallel to the current source such that the second portion of the power signal does not flow through the current source.
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公开(公告)号：US09077240B2
公开(公告)日：2015-07-07
申请号：US14018878
申请日：2013-09-05
IPC分类号： H02H3/08 , H02M3/156 , H03K17/082 , H02J7/00
CPC分类号： H02M3/156 , H02H3/08 , H02J2007/0039 , H03K17/0822
摘要： A semiconductor device is described that includes a switch to switch a load current path on and off according to an input signal. The device further includes an over-current detector to compare a load current with a threshold and to signal an over-current when the load current reaches or exceeds the threshold. The device further includes a control unit to set the threshold to a higher value while in a first state of operation and to a lower value while in a second state of operation, and to at least temporarily switch the switch off when an over-current is signalled, change from the first state of operation to the second state of operation when a first pre-defined time span has elapsed, and to change from the from the second state of operation to the first state when the switch is off for more than a second pre-defined time span.
摘要翻译： 描述了一种半导体器件，其包括根据输入信号来打开和关闭负载电流路径的开关。 该装置还包括过电流检测器，用于将负载电流与阈值进行比较，并在负载电流达到或超过阈值时向其发出过电流信号。 该装置还包括控制单元，用于在第一操作状态下将阈值设置为较高值，而在第二操作状态下将阈值设置为较低值，并且至少在过电流为 发信号时，当经过第一预定时间跨度时从第一操作状态改变到第二操作状态，并且当开关断开多于一个时间时从第二操作状态变为第一状态 第二预定义时间跨度。
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