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    • 31. 发明授权
    • Circuit and method for predicting a valley timing for a voltage across a switching device
    • 用于预测开关装置两端的电压的谷值时序的电路和方法
    • US08279634B2
    • 2012-10-02
    • US12986648
    • 2011-01-07
    • Tzu-Chen Lin
    • Tzu-Chen Lin
    • H02M3/335
    • H02M3/33569H02M3/33592Y02B70/1475
    • Disclosed are circuits and methods for use in a control circuit of a switching mode power supply for turning on a switching device in the switching mode power supply when the voltage across the switching device is at a minimum. A voltage detector is provided for detecting the voltage across the switching device to produce a detection voltage which is a function of the voltage across the switching device, and circuit arrangement is used to predict a valley timing for the voltage across the switching device by evaluating the time period that the detection voltage falls down from a first threshold to a second threshold.
    • 公开了用于开关模式电源的控制电路中的电路和方法,用于当开关装置两端的电压为最小时在开关模式电源中接通开关装置。 提供电压检测器,用于检测开关装置两端的电压,以产生检测电压,该检测电压是开关装置两端的电压的函数,并且电路装置用于通过评估开关装置的电压来预测开关装置两端的电压的谷值时序 检测电压从第一阈值下降到第二阈值的时间段。
    • 34. 发明授权
    • Apparatus and method for providing multiple functions and protections for a power converter
    • 用于为功率转换器提供多种功能和保护的装置和方法
    • US07764521B2
    • 2010-07-27
    • US11826208
    • 2007-07-13
    • Tzu-Chen LinPei-Lun Huang
    • Tzu-Chen LinPei-Lun Huang
    • H02M3/335
    • H02M3/33523
    • A power converter has a transformer including a primary winding connected between a power input and a power switch, the power switch is switched to deliver power from the power input to a power output, an auxiliary winding provides an induced voltage in such a manner that when the power switch is at a first switch state, the induced voltage reflects an input information of the power converter, and when the power switch is at a second switch state, the induced voltage reflects an output information of the power converter. Two detection signals are generated from the input and output information, respectively, to implement multiple functions and protections.
    • 电力转换器具有变压器,其包括连接在电力输入和电源开关之间的初级绕组,电源开关被切换以将功率从功率输入传递到功率输出,辅助绕组以这样的方式提供感应电压: 电源开关处于第一开关状态,感应电压反映功率转换器的输入信息,并且当电源开关处于第二开关状态时,感应电压反映功率转换器的输出信息。 分别从输入和输出信息生成两个检测信号,以实现多种功能和保护。