DIRECT DRIVE LED DRIVER AND OFFLINE CHARGE PUMP AND METHOD THEREFOR

    公开(公告)号:US20190188169A1

    公开(公告)日:2019-06-20

    申请号:US16167124

    申请日:2018-10-22

    CPC classification number: G06F13/28 G06F13/4009 H02M3/07 H03K19/177 H05B33/00

    Abstract: In one embodiment, a Light Emitting Diode (LED) driving device for driving a plurality of LEDs has a switching matrix utilizing a plurality of one of a turn off thyristors or ten off triacs coupled to the plurality of LEDs. A controller is coupled to the switching matrix responsive to a voltage of a rectified AC halfwave, wherein combinations of the plurality of LEDs are altered to ensure a maximum operating voltage of the plurality of LEDs is not exceeded. A current limiting device is coupled to the combinations of the plurality of LED to regulate current.In a second embodiment an offline charge pump utilizes a switching matrix to recombine capacitors in accordance with the voltage on the AC half wave and then in accordance with a desired output voltage to feed a load, such that said recombinations occur at a frequency much higher than the frequency of the AC rectified half wave such that charge is “pumped” from the input at one voltage to the output at another voltage through the AC halfwave while providing a constant output voltage to the load.

    DIRECT DRIVE LED DRIVER AND OFFLINE CHARGE PUMP AND METHOD THEREFOR

    公开(公告)号:US20200081855A1

    公开(公告)日:2020-03-12

    申请号:US16683959

    申请日:2019-11-14

    Abstract: In one embodiment, a Light Emitting Diode (LED) driving device for driving a plurality of LEDs has a switching matrix utilizing a plurality of one of a turn off thyristors or turn off triacs coupled to the plurality of LEDs. A controller is coupled to the switching matrix responsive to a voltage of a rectified AC halfwave, wherein combinations of the plurality of LEDs are altered to ensure a maximum operating voltage of the plurality of LEDs is not exceeded. A current limiting device is coupled to the combinations of the plurality of LED to regulate current.In a second embodiment an offline charge pump utilizes a switching matrix to recombine capacitors in accordance with the voltage on the AC half wave and then in, accordance with a desired output voltage to feed a load, such that said recombinations occur at a frequency much higher than the frequency of the AC rectified half wave such that charge is “pumped” from the input at one voltage to the output at another voltage through the AC halfwave while, providing a constant output voltage to the load.

    DIRECT DRIVE LED DRIVER AND OFFLINE CHARGE PUMP AND METHOD THEREFOR

    公开(公告)号:US20190188170A1

    公开(公告)日:2019-06-20

    申请号:US16167163

    申请日:2018-10-22

    Abstract: In one embodiment, a Light Emitting Diode (LED) driving device for driving a plurality of LEDs has a switching matrix utilizing a plurality of one of a turn off thyristors or turn off triacs coupled to the plurality of LEDs. A controller is coupled to the switching matrix responsive to a voltage of a rectified AC halfwave, wherein combinations of the plurality of LEDs are altered to ensure a maximum operating voltage of the plurality of LEDs is not exceeded. A current limiting device is coupled to the combinations of the plurality of LED to regulate current.In a second embodiment an offline charge pump utilizes a switching matrix to recombine capacitors in accordance with the voltage on the AC half wave and then in accordance with a desired output voltage to feed a load, such that said recombinations occur at a frequency much higher than the frequency of the AC rectified half wave such that charge is “pumped” from the input at one voltage to the output at another voltage through the AC halfwave while providing a constant output voltage to the load.

    DIRECT DRIVE LED DRIVER AND OFFLINE CHARGE PUMP AND METHOD THEREFOR

    公开(公告)号:US20190188171A1

    公开(公告)日:2019-06-20

    申请号:US16167206

    申请日:2018-10-22

    Abstract: In one embodiment, a Light Emitting Diode (LED) driving device for driving a plurality of LEDs has a switching matrix utilizing a plurality of one of a turn off thyristors or turn off triacs coupled to the plurality of LEDs. A controller is coupled to the switching matrix responsive to a voltage of a rectified AC halfwave, wherein combinations of the plurality of LEDs are altered to ensure a maximum operating voltage of the plurality of LEDs is not exceeded. A current limiting device is coupled to the combinations of the plurality of LED to regulate current.In a second embodiment an offline charge pump utilizes a switching matrix to recombine capacitors in accordance with the voltage on the AC half wave and then in accordance with a desired output voltage to feed a load, such that said recombinations occur at a frequency much higher than the frequency of the AC rectified half wave such that charge is “pumped” from the input at one voltage to the output at another voltage through the AC halfwave while providing a constant output voltage to the load,.

    DIRECT DRIVE LED DRIVER AND OFFLINE CHARGE PUMP AND METHOD THEREFOR

    公开(公告)号:US20170286336A1

    公开(公告)日:2017-10-05

    申请号:US15582127

    申请日:2017-04-28

    CPC classification number: G06F13/28 G06F13/4009 H03K19/177

    Abstract: In one embodiment, a Light Emitting Diode (LED) driving device for driving a plurality of LEDs has a switching matrix utilizing a plurality of one of a turn off thyristors or turn off triacs coupled to the plurality of LEDs. A controller is coupled to the switching matrix responsive to a voltage of a rectified AC halfwave, wherein combinations of the plurality of LEDs are altered to ensure a maximum operating voltage of the plurality of LEDs is not exceeded. A current limiting device is coupled to the combinations of the plurality of LED to regulate current.In a second embodiment an offline charge pump utilizes a switching matrix to recombine capacitors in accordance with the voltage on the AC half wave and then in accordance with a desired output voltage to feed a load, such that said recombinations occur at a frequency much higher than the frequency of the AC rectified half wave such that charge is “pumped” from the input at one voltage to the output at another voltage through the AC halfwave while providing a constant output voltage to the load.

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