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    • 6. 发明申请
    • SWITCHING MODE POWER SUPPLY WITH A MULTI-MODE CONTROLLER
    • 用多模式控制器切换模式电源
    • US20100302815A1
    • 2010-12-02
    • US12720396
    • 2010-03-09
    • En LiJunming ZhangYuancheng Ren
    • En LiJunming ZhangYuancheng Ren
    • H02M3/335
    • H02M3/33523
    • A switching mode power supply with a multi-mode controller is provided. The switching mode power supply may include a transformer having a primary winding and a secondary winding to supply power to a load. A feedback circuit may be included to generate a feedback signal that varies in relation to the load on the secondary winding. The multi-mode controller may include a switching circuit, a frequency control circuit and a current limiting circuit. The switching circuit may be coupled to the primary winding to control current flow through the primary winding. The frequency control circuit may control a switching frequency of the switching circuit based on the feedback signal. The current limiting circuit may limit current flow through the primary winding by causing the switching circuit to suspend current flow through the primary winding when the current reaches a peak current limit that is set based on the feedback signal.
    • 提供了具有多模式控制器的开关模式电源。 开关模式电源可以包括具有初级绕组和次级绕组以向负载供电的变压器。 可以包括反馈电路以产生相对于次级绕组上的负载而变化的反馈信号。 多模式控制器可以包括开关电路,频率控制电路和限流电路。 开关电路可以耦合到初级绕组以控制通过初级绕组的电流。 频率控制电路可以基于反馈信号来控制开关电路的开关频率。 当电流达到基于反馈信号设定的峰值电流限制时,限流电路可以通过使开关电路暂停通过初级绕组的电流来限制通过初级绕组的电流。
    • 7. 发明申请
    • DUAL-MODE CONSTANT LOAD CONTROL CIRCUITS AND ASSOCIATED METHODS
    • 双模恒定负载控制电路及相关方法
    • US20100302813A1
    • 2010-12-02
    • US12633983
    • 2009-12-09
    • Huanyu LuEn Li
    • Huanyu LuEn Li
    • H02M3/335
    • H02M3/33523
    • Dual-mode AC/DC power converters and associated methods of operation are disclosed herein. In one embodiment, the AC/DC converter includes a primary winding, a switching transistor coupled to the primary winding, the switching transistor configured to carry a drain-source current, and a feedback voltage port configured to carry a feedback voltage. The feedback voltage port is coupled to the switching transistor to switch off the switching transistor when the drain-source current reaches a peak current limit. The peak current limit increases with increasing feedback voltage if and only if the feedback voltage satisfies an ordered relationship with a threshold.
    • 这里公开了双模式AC / DC电力转换器及相关操作方法。 在一个实施例中,AC / DC转换器包括初级绕组,耦合到初级绕组的开关晶体管,被配置为承载漏源电流的开关晶体管和被配置为承载反馈电压的反馈电压端口。 当漏极 - 源极电流达到峰值电流极限时,反馈电压端口耦合到开关晶体管,以断开开关晶体管。 当且仅当反馈电压满足与阈值的有序关系时,峰值电流限制随着反馈电压的增加而增加。
    • 10. 发明申请
    • Compensation Circuit for Constant Current Regulation of Power Supply and Method Thereof
    • 电源恒流调节补偿电路及其方法
    • US20120113684A1
    • 2012-05-10
    • US13289274
    • 2011-11-04
    • Siran WangYuancheng RenJunming ZhangEn Li
    • Siran WangYuancheng RenJunming ZhangEn Li
    • H02M3/335
    • H02M3/335
    • A compensation circuit and method for constant current regulation of switching mode power supply are disclosed. The ringing waveform of a feedback signal, indicative of the output current of the power supply, causes error. To eliminate the error, a current source charges a capacitor in response to a demagnetizing oscillation signal indicative of the error caused by the ringing waveform of the feedback signal. The voltage across the capacitor is compared to a reference signal to generate a more accurate signal indicative of the conductive time of a secondary diode in a secondary winding of the switching mode power supply. This more accurate signal is inputted to a logic circuit to generate a constant current control signal to control a power switch of the power supply.
    • 公开了一种用于开关电源的恒流调节的补偿电路和方法。 指示电源的输出电流的反馈信号的振铃波形引起误差。 为了消除误差,电流源响应于指示由反馈信号的振铃波形引起的误差的去磁振荡信号对电容器充电。 将电容器两端的电压与参考信号进行比较,以产生指示开关模式电源的次级绕组中次级二极管的导通时间的更准确的信号。 该更准确的信号被输入到逻辑电路以产生恒定电流控制信号以控制电源的电源开关。