Output current boosting of capacitor-drop power supplies

    公开(公告)号:US10784777B2

    公开(公告)日:2020-09-22

    申请号:US16224457

    申请日:2018-12-18

    IPC分类号: H02M3/07 H02M1/00 H02M7/219

    摘要: A capacitor-drop power supply includes a rectifier and a switched capacitor converter coupled to the rectifier. The rectifier is configured to receive an alternating current (AC) signal at an AC voltage and convert the AC signal into a rectified direct current (DC) signal at a rectified voltage. The switched capacitor converter is configured to receive the rectified DC signal and generate a converter output signal at a converter voltage that is proportional to the rectified voltage and that is less than the AC voltage.

    COUPLED INDUCTOR CURRENT SENSING APPARATUS AND SYSTEMS
    3.
    发明申请
    COUPLED INDUCTOR CURRENT SENSING APPARATUS AND SYSTEMS 有权
    耦合电感电流传感器和系统

    公开(公告)号:US20160187386A1

    公开(公告)日:2016-06-30

    申请号:US14588394

    申请日:2014-12-31

    IPC分类号: G01R15/18 G01R1/20

    摘要: A voltage proportional to a sum of currents flowing though first and second coupled inductors is developed across a first capacitor common to first and second series RC networks if the RC networks are time constant-matched to the inductors. The first and second inductors are coupled between a first and second switched drive phase input terminal, respectively, and an apparatus output terminal. The first and second RC networks are coupled in parallel with the first and second inductor, respectively. Inverting and non-inverting inputs of an amplifier are coupled to junctions of third and fourth time constant-matched series RC networks coupled in parallel with the first and second inductors, respectively. The amplifier subtracts voltages sensed at the junctions to generate a difference signal proportional to a magnitude difference of the currents flowing through the inductors.

    摘要翻译: 如果RC网络与电感器时间恒定匹配,则与通过第一和第二耦合电感器流动的电流之和成比例的电压跨越第一和第二串联RC网络公共的第一电容器被开发。 第一和第二电感器分别耦合在第一和第二开关驱动相位输入端子和装置输出端子之间。 第一和第二RC网络分别与第一和第二电感器并联耦合。 放大器的反相和非反相输入分别耦合到与第一和第二电感器并联耦合的第三和第四时间恒定匹配串联RC网络的结。 放大器减去在结处感测的电压,以产生与流过电感器的电流的幅度差成比例的差分信号。

    Coupled inductor current sensing apparatus and systems

    公开(公告)号:US09726697B2

    公开(公告)日:2017-08-08

    申请号:US14588394

    申请日:2014-12-31

    摘要: A voltage proportional to a sum of currents flowing though first and second coupled inductors is developed across a first capacitor common to first and second series RC networks if the RC networks are time constant-matched to the inductors. The first and second inductors are coupled between a first and second switched drive phase input terminal, respectively, and an apparatus output terminal. The first and second RC networks are coupled in parallel with the first and second inductor, respectively. Inverting and non-inverting inputs of an amplifier are coupled to junctions of third and fourth time constant-matched series RC networks coupled in parallel with the first and second inductors, respectively. The amplifier subtracts voltages sensed at the junctions to generate a difference signal proportional to a magnitude difference of the currents flowing through the inductors.

    LED matrix manager
    10.
    发明授权
    LED matrix manager 有权
    LED矩阵管理器

    公开(公告)号:US09491838B2

    公开(公告)日:2016-11-08

    申请号:US13690235

    申请日:2012-11-30

    摘要: Circuits for controlling a plurality of LEDs connected in series are disclosed herein. The circuit includes a plurality of switches, wherein each switch is connectable between the anode and cathode of one of the plurality of LEDs. Each of the switches has a first state wherein current does not pass through the switch and a second state wherein current passes through the switch. The circuit also includes an input for receiving data to program the switches and a data line for transferring data between a circuit controlling second LEDs that are connected in parallel with the first LEDs and the circuit. In addition, the circuit includes a data output for transferring data to other circuits controlling third LEDs that are connected in series with the first LEDs.

    摘要翻译: 本文公开了用于控制串联连接的多个LED的电路。 电路包括多个开关,其中每个开关可在多个LED之一的阳极和阴极之间连接。 每个开关具有其中电流不通过开关的第一状态和电流通过开关的第二状态。 电路还包括用于接收数据以编程开关的输入端和用于在控制与第一LED和电路并联连接的第二LED的电路之间传送数据的数据线。 此外,电路包括用于将数据传送到控制与第一LED串联连接的第三LED的其他电路的数据输出。