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    • 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
    • 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。
    • 9. 发明申请
    • DC/DC CONVERTER AND CONTROL METHOD THEREOF
    • DC / DC转换器及其控制方法
    • US20130176005A1
    • 2013-07-11
    • US13481058
    • 2012-05-25
    • Hong-Yuan JINPei-Qing HUHong-Jian GANJian-Ping YING
    • Hong-Yuan JINPei-Qing HUHong-Jian GANJian-Ping YING
    • G05F1/46
    • H02M3/00H02M3/155H02M3/335H02M2001/0035Y02B70/16
    • The DC/DC converter includes a power unit, an output detection unit, a control unit and a compensation unit. The output detection unit detects an output stage of the power unit. The control unit provides a driving signal based on the output stage for the power unit to control the operation of the power unit. When the power unit operates in an intermittent working mode, the compensation unit provides a compensation signal for the control unit, and the control unit adjusts the driving signal according to the compensation signal, so that during at least one duty cycle an output power of the power unit in the intermittent working mode is higher than an output power of the power unit at a switching moment from a normal mode (continuous working mode) to the intermittent working mode, thereby when the load is not changed, the average number of driving signals is reduced.
    • DC / DC转换器包括功率单元,输出检测单元,控制单元和补偿单元。 输出检测单元检测功率单元的输出级。 控制单元基于用于动力单元的输出级来提供驱动信号,以控制动力单元的操作。 当功率单元工作在间歇工作模式时,补偿单元为控制单元提供补偿信号,控制单元根据补偿信号调整驱动信号,使得在至少一个占空比期间,输出功率 间歇工作模式下的动力单元高于从正常模式(连续工作模式)到间歇工作模式的切换时刻的动力单元的输出功率,因此当负载未变化时,平均驱动信号数 降低了。
    • 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
    • US08923019B2
    • 2014-12-30
    • US13427386
    • 2012-03-22
    • 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, wherein 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 driving pulses. The resonant tank provides a first voltage based on the driving pulses for the output circuit. 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 the rectangular wave generator in a hiccup mode to reduce a ratio of a work period to a stop period, or makes that number of the driving pulses within the current work period is less than the number of the driving pulses when a duty ratio is 50%.
    • 公开了一种DC / DC转换器,电力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为驱动脉冲。 谐振槽基于用于输出电路的驱动脉冲提供第一电压。 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无负载时,控制单元以打嗝模式控制矩形波发生器,以减少工作周期与停止时间的比率,或者使该数量的驱动脉冲 在占空比为50%的情况下,在当前工作周期内小于驱动脉冲的数量。