Methods and apparatus for resonant energy minimization in zero voltage transition power converters

    公开(公告)号:US09654003B1

    公开(公告)日:2017-05-16

    申请号:US14982750

    申请日:2015-12-29

    CPC classification number: H02M3/158 H02M2001/0058 Y02B70/1425 Y02B70/1491

    Abstract: In a method arrangement, providing a zero voltage transition circuit including an input node, an output node, a switch node, an output inductor coupling the switch node and output node, an output capacitor coupling the output node and ground, a first switch coupling the input node and switch node, a second switch coupling switch node and ground, a first auxiliary switch coupling the input node to an auxiliary node, a second auxiliary switch coupling the auxiliary node to ground, and an auxiliary inductor coupling the auxiliary node to the switch node; closing the first auxiliary switch to couple the input to the auxiliary node; subsequently, when a current is below a cutoff threshold, opening the second switch; after a first delay period, opening the first auxiliary switch and closing the second auxiliary switch; and after a second delay period, closing the first switch. Apparatus and additional method arrangements are disclosed.

    Power combiner and balancer
    22.
    发明授权

    公开(公告)号:US11099588B2

    公开(公告)日:2021-08-24

    申请号:US16889892

    申请日:2020-06-02

    Abstract: A power combining technique includes receiving a first voltage at a first input and a second voltage at a second input. The power combining technique further includes combining, with at least two power converters, power received from the first and second inputs into a single power rail. A power balancing technique further includes controlling the at least two power converters such that a first one of the power converters outputs an amount of current to the single power rail that is proportional to and/or equal to the amount of current output by another of the power converters.

    Power combiner and balancer
    23.
    发明授权

    公开(公告)号:US10698431B2

    公开(公告)日:2020-06-30

    申请号:US15882670

    申请日:2018-01-29

    Abstract: A power combining technique includes receiving a first voltage at a first input and a second voltage at a second input. The power combining technique further includes combining, with at least two power converters, power received from the first and second inputs into a single power rail. A power balancing technique further includes controlling the at least two power converters such that a first one of the power converters outputs an amount of current to the single power rail that is proportional to and/or equal to the amount of current output by another of the power converters.

    POWER COMBINER AND BALANCER
    28.
    发明申请
    POWER COMBINER AND BALANCER 有权
    动力组合机和平衡机

    公开(公告)号:US20160259353A1

    公开(公告)日:2016-09-08

    申请号:US14719575

    申请日:2015-05-22

    Abstract: A power combining technique includes receiving a first voltage at a first input and a second voltage at a second input. The power combining technique further includes combining, with at least two power converters, power received from the first and second inputs into a single power rail. A power balancing technique further includes controlling the at least two power converters such that a first one of the power converters outputs an amount of current to the single power rail that is proportional to and/or equal to the amount of current output by another of the power converters.

    Abstract translation: 功率组合技术包括在第一输入端接收第一电压,在第二输入端接收第二电压。 功率组合技术还包括与至少两个功率转换器组合从第一和第二输入接收的功率到单个电力轨道。 功率平衡技术还包括控制至少两个功率转换器,使得第一个功率转换器输出与单个电源轨的电流量成比例和/或等于由另一个功率转换器输出的电流量 电源转换器。

    Active shunt filtering
    29.
    发明授权

    公开(公告)号:US11606849B2

    公开(公告)日:2023-03-14

    申请号:US16457768

    申请日:2019-06-28

    Abstract: In described examples, a system (e.g., a light-emitting diode dimmer system) includes a switching device coupled to a switching controller. The switching controller generates a control signal, which includes a low frequency signal (e.g., for controlling a dimming function) and a switching signal. An active electromagnetic interference filter (AEF) is coupled to the DC source. An active shunt is coupled to a power input node of the switching device and is configured to selectively couple a shunt current to the power input node of the switching device in synchronization with the low frequency signal (e.g., which can reduce, if not also eliminate, a saturation time of the AEF and improve the performance of the AEF).

    Methods and apparatus for adaptive timing for zero voltage transition power converters

    公开(公告)号:US11038421B2

    公开(公告)日:2021-06-15

    申请号:US16670638

    申请日:2019-10-31

    Abstract: Timing circuitry causes: a first closed signal on a first switch control output before a signal on a second switch control output changes from a second closed signal to a first open signal; the first switch control output to provide a second open signal after a first selected time after the second switch control output changes from the second closed signal to the first open signal; and a third switch control output to provide a third closed signal a second selected time after the first switch control output changes from the first closed signal to a third open signal. A beginning of the first closed signal to a beginning of the first open signal is based on a later of: a current through a switch connected to the second switch control output exceeding a threshold current; and a clocked time after the beginning of the first closed signal.

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