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    • 3. 发明授权
    • Switched charge multiplier-divider
    • 开关电荷倍增器
    • US06812769B1
    • 2004-11-02
    • US10640424
    • 2003-08-12
    • Ta-yung YangJenn-yu G. LinRui-Hong Lu
    • Ta-yung YangJenn-yu G. LinRui-Hong Lu
    • G06G712
    • G06G7/16Y02P80/112
    • The switched charge multiplier-divider according to the present invention is constructed of CMOS devices. Capacitor charge theory is employed to implement the circuit of the switched charge multiplier-divider. The switched charge multiplier-divider includes an output capacitor and controls the voltage across the output capacitor, so that it is proportional to the product of the charge current and the charge-time interval. The switched charge multiplier-divider is ideal for use in the power factor correction (PFC) of switching mode power supplies. Potentially, it can also be applied to automatic gain control (AGC) circuits.
    • 根据本发明的开关电荷倍增器分频器由CMOS器件构成。 采用电容充电理论来实现开关电荷分频器的电路。 开关电荷倍增器分压器包括输出电容器并控制输出电容器两端的电压,使其与充电电流和充电时间间隔的乘积成比例。 开关电荷乘法器分频器是开关电源功率因数校正(PFC)的理想选择。 潜在地,它也可以应用于自动增益控制(AGC)电路。
    • 5. 发明授权
    • High-speed reflected signal detection for primary-side controlled power converters
    • 用于初级侧受控电源转换器的高速反射信号检测
    • US08854841B2
    • 2014-10-07
    • US12840919
    • 2010-07-21
    • Ta-Yung YangLi LinChuh-Ching LiSheng-Fu HsuRui-Hong Lu
    • Ta-Yung YangLi LinChuh-Ching LiSheng-Fu HsuRui-Hong Lu
    • H02M3/335
    • H02M3/33523
    • A controller for a power converter includes a clamping circuit, a switching circuit and a pulse generator. The clamping circuit is coupled to an input terminal of the controller for detecting a detection signal from a transformer. The switching circuit generates a switching signal to switch the transformer in response to the detection signal for regulating the power converter. A maximum level of the detection signal is clamped to be under a level of a threshold voltage during an off-period of the switching signal. Since the maximum level of the detection signal is clamped and the oscillating energy of the reflected signal is discharged, the speed of detecting the detection signal is increased. Therefore, the regulation of the primary-side controlled power converter can be improved accordingly.
    • 一种用于功率转换器的控制器包括钳位电路,开关电路和脉冲发生器。 钳位电路耦合到控制器的输入端,用于检测来自变压器的检测信号。 开关电路响应于用于调节功率转换器的检测信号产生开关信号以切换变压器。 检测信号的最大电平在切换信号的截止周期期间被钳位在阈值电压的电平以下。 由于检测信号的最大电平被钳位并且反射信号的振荡能量被放电,所以检测信号的速度增加。 因此,可以相应地改善初级侧受控功率转换器的调节。
    • 6. 发明授权
    • Control circuit of interleaved PFC power converter
    • 交错PFC功率转换器的控制电路
    • US08373399B2
    • 2013-02-12
    • US12915563
    • 2010-10-29
    • Ta-Yung YangCheng-Sung ChenRui-Hong Lu
    • Ta-Yung YangCheng-Sung ChenRui-Hong Lu
    • G05F1/00
    • H02M1/4225H02M2003/1586Y02B70/126Y02P80/112
    • A control circuit of an interleaved PFC power converter according to the present invention comprises a master switching control circuit, a slave switching control circuit, and a slave reference signal generator. The master switching control circuit generates a control signal and a first switching signal in response to an input voltage and a feedback signal. The first switching signal is utilized to control a first switch of the PFC power converter. The slave reference signal generator generates a slave control signal in response to a load condition of the PFC power converter and the control signal. The slave switching control circuit generates a second switching signal in response to the slave control signal. The slave control signal is utilized to control a second switch of the PFC power converter. The slave reference signal generator adjusts the control signal in response to the load condition for generating the slave control signal correspondingly. The slave control signal drives the slave switching control circuit to adjust the switching frequency of the second switch for reducing the switching loss.
    • 根据本发明的交错PFC功率转换器的控制电路包括主开关控制电路,从开关控制电路和从参考信号发生器。 主开关控制电路响应于输入电压和反馈信号产生控制信号和第一开关信号。 第一开关信号用于控制PFC功率转换器的第一开关。 从参考信号发生器响应PFC功率转换器的负载状态和控制信号产生从控制信号。 从切换控制电路响应于从控制信号产生第二切换信号。 从控制信号用于控制PFC功率转换器的第二开关。 从参考信号发生器响应于相应地产生从控制信号的负载条件来调节控制信号。 从控制信号驱动从切换控制电路来调节第二开关的开关频率以减少开关损耗。
    • 8. 发明授权
    • Synchronous switching control circuit for power converters
    • 电源转换器同步开关控制电路
    • US07365997B2
    • 2008-04-29
    • US11357044
    • 2006-02-21
    • Cheng-Sung ChenTa-Yung YangRui-Hong Lu
    • Cheng-Sung ChenTa-Yung YangRui-Hong Lu
    • H02M3/335
    • H03L7/00H02M3/156H02M3/1563
    • The present invention provides a synchronous switching control circuit for variable switching frequency power converters. It comprises a first circuit to generate a first signal in response to an input synchronous signal of a power converter. A second circuit is coupled to the first circuit to generate a second signal in accordance with the frequency of the first signal. Only when the first signal is operated in a specific frequency range, the synchronous operation is allowed. An oscillation circuit is connected to the first circuit and the second circuit to receive the first signal and the second signal to generate an oscillation signal. The oscillation signal is utilized to enable the switching signal of the power converter. The switching signal is thus synchronized with the input synchronous signal in response to the enable of the second signal. Otherwise, the switching signal will be free running.
    • 本发明提供一种用于可变开关频率功率转换器的同步开关控制电路。 它包括响应于功率转换器的输入同步信号产生第一信号的第一电路。 第二电路耦合到第一电路,以根据第一信号的频率产生第二信号。 只有当第一个信号在特定频率范围内工作时,允许同步操作。 振荡电路连接到第一电路和第二电路以接收第一信号和第二信号以产生振荡信号。 振荡信号用于使能功率转换器的开关信号。 因此,响应于第二信号的使能,切换信号与输入同步信号同步。 否则,切换信号将自由运行。