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公开(公告)号：US20220416667A1
公开(公告)日：2022-12-29
申请号：US17903491
申请日：2022-09-06
申请人： Rohm Co., Ltd.
发明人： Akira AOKI , Ryo Takagi
IPC分类号： H02M3/158 , H05B45/38 , H05B45/305 , H05B45/375 , H02M1/00
摘要： This light-emitting element drive control device (100) comprises: a drive logic unit (113) which performs a drive control of a switch output stage (N1, D1, L1) for dropping an input voltage (VIN) to an output voltage (VOUT) and supplying a light-emitting element therewith: a charge-pump power supply unit (α) which generates a step-up voltage (CP) higher than the input voltage (VIN); and a current detecting comparator (114) which receives a supply of the step-up voltage (CP) and the output voltage (VOUT) as power supply voltages, and generates control signals (SET, RST) for the drive logic unit (113) by directly comparing a current detection signal (Vsns) corresponding to an inductor current (IL) of the switch output stage with a peak detection value (Vsns_pk) and a bottom detection value (Vsns_bt).
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公开(公告)号：US11363690B2
公开(公告)日：2022-06-14
申请号：US17372821
申请日：2021-07-12
申请人： Intelesol, LLC
发明人： Mark D. Telefus , Stephen C. Gerber
IPC分类号： H05B45/30 , H05B45/305
摘要： AC-driven light-emitting diode systems and methods are provided for driving LED devices (e.g., LED lighting) using AC power. For example, an integrated circuit includes a first power line and a second power line configured for connection to AC power, and a plurality of LED stages, wherein each LED stage comprises multiple serially-connected LED devices, switches connected to inputs and outputs of the LED stages. The integrated circuit further includes switch control circuitry configured to control the switches to selectively connect one or more of the LED stages to the first and second power lines to empower the LED stages with the AC power.
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公开(公告)号：US20210345462A1
公开(公告)日：2021-11-04
申请号：US17372821
申请日：2021-07-12
申请人： Intelesol, LLC
发明人： Mark D. Telefus , Stephen C. Gerber
IPC分类号： H05B45/305
摘要： AC-driven light-emitting diode systems and methods are provided for driving LED devices (e.g., LED lighting) using AC power. For example, an integrated circuit includes a first power line and a second power line configured for connection to AC power, and a plurality of LED stages, wherein each LED stage comprises multiple serially-connected LED devices, switches connected to inputs and outputs of the LED stages. The integrated circuit further includes switch control circuitry configured to control the switches to selectively connect one or more of the LED stages to the first and second power lines to empower the LED stages with the AC power.
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公开(公告)号：US11025341B2
公开(公告)日：2021-06-01
申请号：US16621100
申请日：2018-06-12
申请人： SIGNIFY HOLDING B.V.
发明人： Kumar Arulandu , Johan-Paul Marie Gerard Linnartz , Michel Germe , Amir Khalid , Olivia Qiu , David Derrien
IPC分类号： H04B10/116 , H05B45/40 , H05B33/08 , H05B47/19 , H05B45/305
摘要： An LED module (200) comprising: a first set of LEDs (D1) for emitting illumination to illuminate an environment, arranged within a first circuit path; a second set of one or more LEDs (D2) for emitting light, arranged within a second circuit path; both the first and second sets being powered by a portion of the power received via a same pair of input terminals, and the first circuit path being longer than the second circuit path; and filter circuitry (206, 208) arranged to filter a modulation in the power received via the terminals, the filtering comprising allowing a component of the modulation at a predetermined modulation frequency to be passed only to the second set of LEDs (D2) and not the first set (D1), thereby causing a corresponding signal to be embedded in the light emitted by the second set but not in the illumination emitted by the first set.
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公开(公告)号：US10779383B2
公开(公告)日：2020-09-15
申请号：US16678124
申请日：2019-11-08
申请人： ABL IP HOLDING LLC
摘要： An example method includes propagating a message including an instruction, from a gateway to a plurality of ancillary nodal devices (devices) in a flood network. Each of the plurality of devices is within an equal number of transmissive steps of the gateway through the flood network such that the message is propagated with approximately equivalent delay to each of the plurality of devices and substantially simultaneously received by all of the devices. The method also includes substantially simultaneously transmitting the message from each respective one of the devices to end nodal devices (end nodes) of a group of end nodes in the flood network in communication with the respective one of the devices. The method further includes, upon receipt of the message from the devices, substantially simultaneously executing the instruction, by each of the group of the end nodes of the flood network.
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公开(公告)号：US11523478B2
公开(公告)日：2022-12-06
申请号：US16891271
申请日：2020-06-03
发明人： Bo Yu , Bairen Liu , Junxin Tan
IPC分类号： H05B45/30 , H05B45/14 , H05B45/305 , H05B45/335
摘要： A dimming circuit for dimming a current flowing through a light emitting device, having: a multi-function pin, configured to receive a dimming signal; wherein when the dimming signal is an analog voltage signal, an amplitude of the current flowing through the light emitting device is regulated based on the dimming signal; when the dimming signal is a pulse signal and a frequency of the dimming signal is in a first frequency range, a duty cycle of the current flowing through the light emitting device is regulated based on the dimming signal; and when the dimming signal is the pulse signal and the frequency of the dimming signal is in a second frequency range, the amplitude of the current flowing through the light emitting device is regulated based on the dimming signal.
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公开(公告)号：US20220312559A1
公开(公告)日：2022-09-29
申请号：US17536157
申请日：2021-11-29
申请人： Qisda Corporation
发明人： Chih-Hsiang WU
IPC分类号： H05B45/305 , H05B45/325
摘要： A light source driving method is applied to a light source driving module electrically connected to a light source and a controller. The light source driving module includes a frequency setting module, a driving circuit, and a conversion module. The frequency setting module generates a frequency setting signal according to a switching signal. The driving circuit generates a light source driving signal after receiving the switching signal and a current control signal. The conversion module selectively generates a driving current flowing through the light source in response to the light source driving signal. The driving current increases continuously during a rising duration, and the light source driving signal has a first operating frequency during the rising period. The driving current remains unchanged during a stable duration, and the light source driving signal has a second operating frequency during the stable period.
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公开(公告)号：US20220151041A1
公开(公告)日：2022-05-12
申请号：US17329442
申请日：2021-05-25
发明人： Zhong Chen , Xin Wu
IPC分类号： H05B45/305 , G01R19/175 , H05B45/39 , H05B45/325 , H05B45/335
摘要： A power adjusting circuit, an LED power supply and an LED luminaire. The power adjusting circuit includes: a zero-crossing detecting unit, adapted to generate a zero-crossing detection signal according to an high-frequency signal, wherein the zero-crossing detection signal is a pulse wave or a square wave, and the high-frequency signal is a sine wave or an AC wave; a signal processing unit, adapted to determine a second number of pulses or square waves of the zero-crossing detection signal corresponding to an adjustment signal that is input externally, according to a first number of pulses or square waves of the zero-crossing detection signal corresponding to a full-load operation of a functional device; a counting unit, adapted to generate a switch control signal according to the first number and the second number; and a switch unit, adapted to control an output of the high-frequency signal according to the switch control signal.
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公开(公告)号：US20210385921A1
公开(公告)日：2021-12-09
申请号：US17284049
申请日：2019-10-24
申请人： Silicon Hill B.V.
IPC分类号： H05B45/3574 , H05B45/3725 , H05B45/305
摘要： An LED lamp (1) for use in a luminaire (2), the LED lamp (1) comprising a plurality of LEDs (14) connected in a plurality of groups (15, 16); one or more rectifier circuits (10, 10a, 10b) adapted for rectifying an electrical current received from the luminaire (2) for supply to the LEDs (14); a first control circuit (24) adapted to estimate electrical current or electrical power received by or used by the LED lamp (1), and adapted to generate an output on the basis of the estimate; and a switching circuit (20) comprising a first switch (21) for switching the plurality of groups of LEDs (15, 16) between a plurality of different circuit configurations at a switching frequency of at least 300 kHz and according to a duty cycle; wherein the switching circuit (20) is configured to adjust the duty cycle in dependence on the output of the first control circuit (24) to adjust the electrical power used by the LED lamp (1).
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公开(公告)号：US20210282238A1
公开(公告)日：2021-09-09
申请号：US17215332
申请日：2021-03-29
发明人： William Zotter , Bingrui Yang , Henry Kite
摘要： A lighting device, such as a two-wire lighting control device, may include a controllably conductive device and a control circuit. The controllably conductive device may supply an AC line voltage to a load in response to a dive signal such that the controllable conductive device is non-conductive for a first duration of time and conductive for a second duration of time within a half-cycle of the AC line voltage. The control circuit may receive a signal from the controllably conductive device that represents a voltage developed across the controllable conductive device during the first duration of time. The control circuit may generate a sine-wave-shaped signal that complements the voltage developed across the controllably conductive device during the second duration of time. The control circuit may also filter the signal from the controllably conductive device during the first duration of time and the sine-wave-shaped signal during the second duration of time.
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