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    • 3. 发明授权
    • Resonance converter and synchronous rectification driving method thereof
    • 谐振变换器及其同步整流驱动方法
    • US07599198B2
    • 2009-10-06
    • US11780873
    • 2007-07-20
    • Hong-Shan TaoHong-Jian GanJian-Ping Ying
    • Hong-Shan TaoHong-Jian GanJian-Ping Ying
    • H02M3/335
    • H02M3/3376H02M3/33592Y02B70/1475Y02P80/112
    • A resonance converter and a synchronous rectification driving method thereof are provided. The resonance converter includes a switch circuit having at least two first switches, a resonance circuit having a resonance frequency, a transformer, and a full-wave rectification circuit having two second switches each of which has a drain and a source and generates a channel resistance voltage when a current flows through the drain and the source. The synchronous rectification driving method includes steps as follow. When an operating frequency of the resonance converter is less than the resonance frequency and the resonance converter is coupled to a heavy load, the channel resistance voltage is compared with a reference voltage for driving the second switches of the full-wave rectification circuit; and when the operating frequency of the resonance converter is not smaller than the resonance frequency, duplicated signals of signals used to drive the first switches are respectively used to drive the second switches of the full-wave rectification circuit.
    • 提供一种谐振变换器及其同步整流驱动方法。 谐振转换器包括具有至少两个第一开关的开关电路,具有谐振频率的谐振电路,变压器和具有两个第二开关的全波整流电路,每个开关具有漏极和源极,并产生沟道电阻 电流流过漏极和源极时的电压。 同步整流驱动方法包括以下步骤。 当谐振转换器的工作频率小于谐振频率并且谐振转换器耦合到重负载时,将沟道电阻电压与用于驱动全波整流电路的第二开关的参考电压进行比较; 并且当谐振转换器的工作频率不小于谐振频率时,用于驱动第一开关的信号的复制信号分别用于驱动全波整流电路的第二开关。
    • 4. 发明申请
    • RESONANCE CONVERTER AND SYNCHRONOUS RECTIFICATION DRIVING METHOD THEREOF
    • 谐振转换器及其同步整流驱动方法
    • US20080055942A1
    • 2008-03-06
    • US11780873
    • 2007-07-20
    • Hong-Shan TAOHong-Jian GanJian-Ping YING
    • Hong-Shan TAOHong-Jian GanJian-Ping YING
    • H02M3/315
    • H02M3/3376H02M3/33592Y02B70/1475Y02P80/112
    • A resonance converter and a synchronous rectification driving method thereof are provided. The resonance converter includes a switch circuit having at least two first switches, a resonance circuit having a resonance frequency, a transformer, and a full-wave rectification circuit having two second switches each of which has a drain and a source and generates a channel resistance voltage when a current flows through the drain and the source. The synchronous rectification driving method includes steps as follow. When an operating frequency of the resonance converter is less than the resonance frequency and the resonance converter is coupled to a heavy load, the channel resistance voltage is compared with a reference voltage for driving the second switches of the full-wave rectification circuit; and when the operating frequency of the resonance converter is not smaller than the resonance frequency, duplicated signals of signals used to drive the first switches are respectively used to drive the second switches of the full-wave rectification circuit.
    • 提供一种谐振变换器及其同步整流驱动方法。 谐振转换器包括具有至少两个第一开关的开关电路,具有谐振频率的谐振电路,变压器和具有两个第二开关的全波整流电路,每个开关具有漏极和源极,并产生沟道电阻 电流流过漏极和源极时的电压。 同步整流驱动方法包括以下步骤。 当谐振转换器的工作频率小于谐振频率并且谐振转换器耦合到重负载时,将沟道电阻电压与用于驱动全波整流电路的第二开关的参考电压进行比较; 并且当谐振转换器的工作频率不小于谐振频率时,用于驱动第一开关的信号的复制信号分别用于驱动全波整流电路的第二开关。
    • 5. 发明授权
    • DC/DC converter, power converter and control method thereof
    • DC / DC转换器,功率转换器及其控制方法
    • US09236807B2
    • 2016-01-12
    • US13427450
    • 2012-03-22
    • Hong-Yuan JinPei-Qing HuHong-Jian GanJian-Ping Ying
    • Hong-Yuan JinPei-Qing HuHong-Jian GanJian-Ping Ying
    • H02M3/335H02M1/00
    • H02M3/33569H02M2001/0035H02M2001/0058Y02B70/1433Y02B70/1491Y02B70/16
    • A DC/DC converter, a power converter and a control method thereof are disclosed, where the DC/DC converter includes an output circuit, a rectangular wave generator, a resonant tank, a detection unit and a control unit. The output circuit has a load. The rectangular wave generator converts an input voltage into at least one rectangular wave. The resonant tank provides a first voltage based on the rectangular wave for the output circuit. The detection unit detects a signal related to a state of the load. When the state of the load is light-load or a no-load, the control unit controls a working frequency or a duty ratio of the rectangular wave, so that the duty ratio of the rectangular wave is within a predetermined range, in which a voltage gain of the DC/DC converter is greater than another voltage gain under the condition of 50% duty ratio.
    • 公开了DC / DC转换器,功率转换器及其控制方法,其中DC / DC转换器包括输出电路,矩形波发生器,谐振回路,检测单元和控制单元。 输出电路有负载。 矩形波发生器将输入电压转换成至少一个矩形波。 谐振槽为输出电路提供基于矩形波的第一电压。 检测单元检测与负载状态有关的信号。 当负载状态为轻负载或空载时,控制单元控制矩形波的工作频率或占空比,使得矩形波的占空比在预定范围内,其中 在50%占空比的条件下,DC / DC转换器的电压增益大于另一个电压增益。
    • 8. 发明申请
    • DC/DC CONVERTER, POWER CONVERTER AND CONTROL METHOD THEREOF
    • DC / DC转换器,电源转换器及其控制方法
    • US20120250358A1
    • 2012-10-04
    • US13427450
    • 2012-03-22
    • Hong-Yuan JinPei-Qing HuHong-Jian GanJian-Ping Ying
    • Hong-Yuan JinPei-Qing HuHong-Jian GanJian-Ping Ying
    • H02M3/335
    • H02M3/33569H02M2001/0035H02M2001/0058Y02B70/1433Y02B70/1491Y02B70/16
    • A DC/DC converter, a power converter and a control method thereof are disclosed, where the DC/DC converter includes an output circuit, a rectangular wave generator, a resonant tank, a detection unit and a control unit. The output circuit has a load. The rectangular wave generator converts an input voltage into at least one rectangular wave. The resonant tank provides a first voltage based on the rectangular wave for the output circuit. The detection unit detects a signal related to a state of the load. When the state of the load is light-load or a no-load, the control unit controls a working frequency or a duty ratio of the rectangular wave, so that the duty ratio of the rectangular wave is within a predetermined range, in which a voltage gain of the DC/DC converter is greater than another voltage gain under the condition of 50% duty ratio.
    • 公开了DC / DC转换器,功率转换器及其控制方法,其中DC / DC转换器包括输出电路,矩形波发生器,谐振回路,检测单元和控制单元。 输出电路有负载。 矩形波发生器将输入电压转换成至少一个矩形波。 谐振槽为输出电路提供基于矩形波的第一电压。 检测单元检测与负载状态有关的信号。 当负载状态为轻负载或空载时,控制单元控制矩形波的工作频率或占空比,使得矩形波的占空比在预定范围内,其中 在50%占空比的条件下,DC / DC转换器的电压增益大于另一个电压增益。
    • 10. 发明授权
    • DC/DC converter, power converter and control method thereof
    • DC / DC转换器,功率转换器及其控制方法
    • US08923018B2
    • 2014-12-30
    • US13424387
    • 2012-03-20
    • Pei-Qing HuHong-Yuan JinHong-Jian GanJian-Ping Ying
    • Pei-Qing HuHong-Yuan JinHong-Jian GanJian-Ping Ying
    • H02M3/335H02M1/00
    • H02M3/33569H02M2001/0035H02M2001/0058Y02B70/1433Y02B70/1491Y02B70/16
    • A DC/DC converter, a power converter and a control method thereof are disclosed, where the DC/DC converter includes an output circuit having a load, a rectangular wave generator having a bridge arm, a resonant tank, a detection unit and a control unit. The bridge arm includes a first and a second switches connected each other. The detection unit detects a signal related to a state of the load. When the state of the load is a light-load or a no-load, the control unit controls ON/OFF state of the first and second switches by pulse width modulation mode to convert an input voltage into at least one rectangular wave for the resonant tank. A duty ratio of the first switch is within a first or second predetermined range, and a duty ratio of the second switch is complementary to the duty ratio of the first switch, whereby a voltage gain of the DC/DC converter is greater than 1.
    • 公开了一种DC / DC转换器,功率转换器及其控制方法,其中DC / DC转换器包括具有负载的输出电路,具有桥臂的矩形波发生器,谐振槽,检测单元和控制 单元。 桥臂包括彼此连接的第一和第二开关。 检测单元检测与负载状态有关的信号。 当负载状态为轻负载或无负载时,控制单元通过脉宽调制模式控制第一和第二开关的接通/断开状态,以将输入电压转换为至少一个矩形波,用于谐振 坦克。 第一开关的占空比在第一或第二预定范围内,第二开关的占空比与第一开关的占空比互补,由此DC / DC转换器的电压增益大于1。