Multi-channel LED driver with integrated LEDs having a multilayer structure

    公开(公告)号:US12127312B2

    公开(公告)日:2024-10-22

    申请号:US18510457

    申请日:2023-11-15

    申请人: ERP POWER, LLC

    摘要: An integrated multi-layered lighting system includes a first board having a first component area and a first light area, a second board coupled to and offset from the first board, the second board having a first opening overlapping the first light area of the first board in a plan view, and a second component area overlapping the first component area of the first board in a plan view, a plurality of light emitting diodes (LEDs) coupled to the first board and positioned in the first light area corresponding to the first opening of the second board, and a light driver configured to drive the plurality of LEDs and including a plurality of first components coupled to the first board and positioned in the first component area and a plurality of second components coupled to the second board and positioned in the second component area.

    Backlight control circuit, control method thereof, and display terminal

    公开(公告)号:US12075539B2

    公开(公告)日:2024-08-27

    申请号:US17618079

    申请日:2020-10-12

    摘要: A backlight control circuit is provided, which includes a driver circuit and a power conversion circuit. The driver circuit includes a feedback output terminal and at least one channel port. The channel port is coupled to a first terminal of a light string group. The driver circuit is configured to obtain a voltage of each channel port, and enable the feedback output terminal to provide a current feedback signal based on the voltage Vch. The power conversion circuit is coupled to the feedback output terminal and includes a voltage output terminal. The voltage output terminal is configured to provide a supply voltage for a second terminal of each light string group. The power conversion circuit is configured to perform voltage conversion on an input voltage, and increase or decrease the supply voltage based on the current feedback signal.

    Load control device for a light-emitting diode light source

    公开(公告)号:US12075532B2

    公开(公告)日:2024-08-27

    申请号:US17862020

    申请日:2022-07-11

    发明人: Stuart W. DeJonge

    摘要: A load control device for controlling the amount of power delivered to an electrical load is able to operate in a normal mode and a burst mode. The load control device may comprise a control circuit that activates an inverter circuit during active state periods and deactivates the inverter circuit during inactive state periods. The control circuit may operate in the normal mode to regulate an average magnitude of a load current conducted through the electrical load to be above a minimum rated current. The control circuit may operate in the burst mode to adjust the average magnitude of the load current to be below the minimum rated current. The control circuit may adjust the average magnitude of the load current by adjusting the length of the inactive state periods while holding the length of the active state periods constant.

    SYSTEM AND METHOD FOR DYNAMIC CONTROL OF 2-STAGE LIGHT DRIVER

    公开(公告)号:US20240276617A1

    公开(公告)日:2024-08-15

    申请号:US18438205

    申请日:2024-02-09

    申请人: ERP POWER, LLC

    IPC分类号: H05B45/59 H05B45/14 H05B45/36

    CPC分类号: H05B45/59 H05B45/14 H05B45/36

    摘要: A method of controlling a light driver includes determining, by a secondary controller of the light driver, an actual voltage drop across a regulator of the light driver; determining, by the secondary controller, a target voltage drop of the regulator; calculating, by the secondary controller, a theoretical input voltage of the regulator based on the target voltage drop and an output voltage of the regulator; determining, by the secondary controller, whether the theoretical input voltage is within a first range; and in response to determining that the theoretical input voltage is within the first range, generating, by the secondary controller, a first feedback signal for transmission to a primary controller of the light driver based on the target voltage drop and the actual voltage drop.

    INDEPENDENT LIGHTING CONTROL
    8.
    发明公开

    公开(公告)号:US20240206029A1

    公开(公告)日:2024-06-20

    申请号:US18068561

    申请日:2022-12-20

    发明人: John P. Thurk

    摘要: A lighting control system having a driver for independently controlling multiple light sources. One lighting control system includes an input capable of being driven in a first polarity and a second polarity reversed from the first polarity, a first light source connected to the input and configured to generate light when driven at the first polarity, and a second light source connected to the input and configured to generate light when driven at the second polarity. The lighting control system includes a steering bridge connected to the input and configured to control the polarity of the input, and a controller connected to the steering bridge. The controller is configured to control, based on a steering drive command, the steering bridge, and provide, to the input, lighting control signals to independently control the first light source and the second light source.

    Power supply configuration across isolation barrier

    公开(公告)号:US12016101B2

    公开(公告)日:2024-06-18

    申请号:US17598264

    申请日:2020-03-25

    摘要: A device, system, and method configure a power supply of a powered device. The powered device includes a digital addressable lighting interface (DALI) connected to a load to be powered by a power source. The powered device includes an isolator. The powered device includes a controller positioned on a primary side of the isolator. The controller is configured to generate a first signal to select whether to provide power to the 5 DALI at a zero current value or a maximum current value. The controller is further configured to generate a second signal to provide power to the DALI at a selected current value between the zero current value and the maximum current value.