Method and apparatus for filtering a rectified voltage signal

    公开(公告)号:US09923451B2

    公开(公告)日:2018-03-20

    申请号:US15095885

    申请日:2016-04-11

    Abstract: A configurable impedance circuit is provided, including a filter for filtering a received DC voltage and a controller. The filter includes a first capacitor, a second capacitor, and a selectable switch coupled in series with the second capacitor and coupled to receive a control signal. The selectable switch and the second capacitor are selectively coupled in parallel with the first capacitor. The controller is connected to sense a differential voltage across the second capacitor and configured to generate the control signal to open or close the selectable switch based on the differential voltage across the second capacitor, so as to maintain a voltage range across the second capacitor. According to disclosure of the present invention, the total physical size of the capacitors is reduced and the size of the power supply is reduced accordingly.

    Resonant converters with an improved voltage regulation range

    公开(公告)号:US09812977B2

    公开(公告)日:2017-11-07

    申请号:US14676515

    申请日:2015-04-01

    Abstract: A method comprises determining an operating mode based upon an input voltage and an output voltage of a resonant converter, wherein the resonant converter comprises a switch network coupled to an input dc power source, a resonant tank coupled to the switch network and a transformer coupled between the resonant tank and a secondary rectifier, wherein the secondary rectifier is a full-bridge rectifier, configuring the switch network to operate at a buck converter mode in response to a first input voltage and configuring the secondary rectifier to operate at a boost converter mode in response to a second input voltage, wherein the first voltage is higher than the output voltage and the second voltage is lower than the output voltage.

    Secondary side hybrid converter apparatus and method
    77.
    发明授权
    Secondary side hybrid converter apparatus and method 有权
    二次侧混合变流器装置及方法

    公开(公告)号:US09595877B2

    公开(公告)日:2017-03-14

    申请号:US14500486

    申请日:2014-09-29

    CPC classification number: H02M3/33576 H02M2001/0058 Y02B70/1433 Y02B70/1491

    Abstract: An apparatus comprises an isolated power converter coupled to an input dc power source, wherein the isolated power converter comprises a primary switching network operating at a fixed switching frequency, a secondary resonant tank including a dc blocking capacitor and a rectifier having two input terminals coupled to the secondary resonant tank, an output capacitor coupled between a first output terminal of the rectifier and a load and a dc/dc converter coupled between a second output terminal of the rectifier and the load.

    Abstract translation: 一种装置包括耦合到输入直流电源的隔离功率转换器,其中所述隔离功率转换器包括以固定开关频率工作的初级开关网络,包括直流隔离电容器的次级谐振箱和具有耦合到 次级谐振回路,耦合在整流器的第一输出端和负载之间的输出电容器和耦合在整流器的第二输出端子与负载之间的dc / dc转换器。

    Apparatus for PWM gate drive circuit
    79.
    发明授权
    Apparatus for PWM gate drive circuit 有权
    PWM门驱动电路装置

    公开(公告)号:US09436192B2

    公开(公告)日:2016-09-06

    申请号:US13957080

    申请日:2013-08-01

    CPC classification number: G05F1/46 H02M3/1588 Y02B70/1425 Y02B70/1466

    Abstract: A converter comprises a high side switch, a low side switch connected in series with the high switch, a gate drive circuit comprising a first drive port coupled to a gate of the high side switch, a second drive port coupled to a gate of the low side switch, an SRE input port and a PWM input port coupled to a PWM controller, wherein the PWM controller is selected from the group consisting of a first PWM controller having two complementary PWM outputs, a second PWM controller having a tri-state PWM output and a third PWM controller having a single PWM output.

    Parallel Hybrid Converter Apparatus and Method
    80.
    发明申请
    Parallel Hybrid Converter Apparatus and Method 有权
    并联混合转换器装置及方法

    公开(公告)号:US20160149501A1

    公开(公告)日:2016-05-26

    申请号:US14548567

    申请日:2014-11-20

    Abstract: An apparatus comprises an isolated power converter coupled between an input dc power source, wherein the isolated power converter comprises a first switch network coupled to a first transformer winding through a first resonant tank and a second switch network coupled to a second transformer winding through a second resonant tank and a dc/dc converter coupled to the second switch network.

    Abstract translation: 一种装置包括耦合在输入直流电源之间的隔离功率转换器,其中所述隔离功率转换器包括耦合到通过第一谐振储能器的第一变压器绕组的第一开关网络和通过第二谐振回路耦合到第二变压器绕组的第二开关网络 谐振箱和耦合到第二开关网络的dc / dc转换器。

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