公开(公告)号：US09252766B2

公开(公告)日：2016-02-02

申请号：US13538843

申请日：2012-06-29

申请人： Yuancheng Ren ,  En Li ,  Naixing Kuang ,  Yike Li

发明人： Yuancheng Ren ,  En Li ,  Naixing Kuang ,  Yike Li

IPC分类号： G01R19/00 ,  H03K17/30 ,  H03K17/20 ,  H02M1/00 ,  H02M1/32 ,  H04B1/00 ,  G01R31/40

CPC分类号： H03K17/30 ,  G01R31/40 ,  G05B2219/00 ,  H02M1/00 ,  H02M1/32 ,  H03K17/20 ,  H03K2017/307 ,  H04B1/00

摘要： A no-load detecting circuit and the method thereof are disclosed. The no-load detecting circuit may be applied in switching mode power supplies or other circuits. The no-load detecting circuit comprises: a variable resistance circuit coupled in series to a load of the switching mode power supply; and a first comparison circuit coupled to the variable resistance circuit to receive the voltage across the variable resistance circuit, wherein based on the comparison of the voltage across the variable resistance circuit and a first threshold, the first comparison circuit generates a no-load detecting signal indicative of the load status; wherein the equivalent resistance of the variable resistance circuit varies based on the varying of the load of the switching mode power supply.

摘要翻译： 公开了一种空载检测电路及其方法。 空载检测电路可以应用在开关模式电源或其他电路中。 空载检测电路包括：串联耦合到开关模式电源的负载的可变电阻电路; 以及耦合到所述可变电阻电路以接收所述可变电阻电路两端的电压的第一比较电路，其中，基于所述可变电阻电路两端的电压与第一阈值的比较，所述第一比较电路产生无负载检测信号 指示负载状态; 其中可变电阻电路的等效电阻根据开关模式电源的负载变化而变化。

公开(公告)号：US09118258B2

公开(公告)日：2015-08-25

申请号：US13618512

申请日：2012-09-14

申请人： Yike Li ,  Paul Ueunten

发明人： Yike Li ,  Paul Ueunten

IPC分类号： H02M3/335 ,  H02M1/42

CPC分类号： H02M1/4225 ,  H02M1/4258 ,  Y02B70/126

摘要： A switching power converter with an input terminal configured to receive a first input voltage; an output terminal configured to provide an output current to a load, wherein the output current has a peak value and an average value; a power switch; a first loop coupled to the input terminal, wherein the first loop configured to generate a first output signal based on the first input voltage; a second loop configured to generate a second output signal based on the output current; a multiplier configured to generate a multiplying signal based on multiplying the first output signal with the second output signal; and a driving circuit configured to generate a driving signal based on the multiplying signal to control the power switch, so as to reduce the ratio between the peak value and the average value of the output current.

摘要翻译： 一种具有被配置为接收第一输入电压的输入端的开关电源转换器; 输出端子，被配置为向负载提供输出电流，其中所述输出电流具有峰值和平均值; 电源开关; 耦合到所述输入端的第一回路，其中所述第一回路被配置为基于所述第一输入电压产生第一输出信号; 第二回路，被配置为基于所述输出电流产生第二输出信号; 配置为基于将第一输出信号与第二输出信号相乘产生乘法信号的乘法器; 以及驱动电路，被配置为基于乘法信号产生驱动信号以控制电源开关，以便减小峰值与输出电流的平均值之间的比率。

公开(公告)号：US20130070485A1

公开(公告)日：2013-03-21

申请号：US13618512

申请日：2012-09-14

申请人： Yike Li ,  Paul Ueunten

发明人： Yike Li ,  Paul Ueunten

IPC分类号： H02M3/335

CPC分类号： H02M1/4225 ,  H02M1/4258 ,  Y02B70/126

摘要： A switching power converter with an input terminal configured to receive a first input voltage; an output terminal configured to provide an output current to a load, wherein the output current has a peak value and an average value; a power switch; a first loop coupled to the input terminal, wherein the first loop configured to generate a first output signal based on the first input voltage; a second loop configured to generate a second output signal based on the output current; a multiplier configured to generate a multiplying signal based on multiplying the first output signal with the second output signal; and a driving circuit configured to generate a driving signal based on the multiplying signal to control the power switch, so as to reduce the ratio between the peak value and the average value of the output current.

摘要翻译： 一种具有被配置为接收第一输入电压的输入端的开关电源转换器; 输出端子，被配置为向负载提供输出电流，其中所述输出电流具有峰值和平均值; 电源开关; 耦合到所述输入端的第一回路，其中所述第一回路被配置为基于所述第一输入电压产生第一输出信号; 第二回路，被配置为基于所述输出电流产生第二输出信号; 配置为基于将第一输出信号与第二输出信号相乘产生乘法信号的乘法器; 以及驱动电路，被配置为基于乘法信号产生驱动信号以控制电源开关，以便减小峰值与输出电流的平均值之间的比率。

公开(公告)号：US20130002461A1

公开(公告)日：2013-01-03

申请号：US13538940

申请日：2012-06-29

申请人： Yike Li ,  Xiaoyu Xi ,  Fei Wang ,  Zhengxin Li

发明人： Yike Li ,  Xiaoyu Xi ,  Fei Wang ,  Zhengxin Li

IPC分类号： H03M1/00

CPC分类号： H03K5/1532

摘要： A sample and hold circuit and the method thereof are disclosed. The sample and hold circuit may be applied in voltage regulators or other circuits. The sample and hold circuit comprises: an input terminal configured to receive an input signal; an output terminal configured to provide an output signal; a control circuit configured to receive the input signal and the output signal, and wherein based on the input signal and the output signal, the control circuit generates a digital signal, and wherein the digital signal increases when the output signal is lower than the input signal, and maintains when the output signal is larger than or equal to the input signal; a digital-to-analog converter (DAC) configured to convert the digital signal to the output signal.

摘要翻译： 公开了采样保持电路及其方法。 采样保持电路可以应用在电压调节器或其他电路中。 采样和保持电路包括：输入端，被配置为接收输入信号; 输出端子，被配置为提供输出信号; 控制电路，被配置为接收所述输入信号和所述输出信号，并且其中基于所述输入信号和所述输出信号，所述控制电路产生数字信号，并且其中当所述输出信号低于所述输入信号时，所述数字信号增加 并且当输出信号大于或等于输入信号时保持; 配置为将数字信号转换为输出信号的数模转换器（DAC）。

公开(公告)号：US20120062159A1

公开(公告)日：2012-03-15

申请号：US13231867

申请日：2011-09-13

申请人： Yike Li ,  Jian Zhao ,  Antonius Bakker

发明人： Yike Li ,  Jian Zhao ,  Antonius Bakker

IPC分类号： H02P6/14

CPC分类号： H02P6/15 ,  H02P6/26

摘要： A DC brushless motor system is disclosed. When a rotor of the DC brushless motor is close to an aligned position, there will be current spike in the coil and voltage spike in an input capacitor. By decreasing the peak current limit of the current in the coil when the rotor is close to the aligned position, the current spike and the voltage spike are reduced.

摘要翻译： 公开了一种直流无刷电动机系统。 当直流无刷电机的转子接近对准位置时，线圈中将有电流尖峰和输入电容器中的电压尖峰。 当转子接近对准位置时，通过减小线圈中电流的峰值电流极限，减小电流尖峰和电压尖峰。

公开(公告)号：US08836310B2

公开(公告)日：2014-09-16

申请号：US13457857

申请日：2012-04-27

申请人： Yike Li ,  Xiangyong Xu

发明人： Yike Li ,  Xiangyong Xu

IPC分类号： H02M3/156 ,  H02M3/335

CPC分类号： H02M3/33507

摘要： A controller having an on-time controller, an off-time controller, a switch control signal generator, and a jittering signal generator, wherein the jittering signal generator couples jitter into the on-time or the off-time of a primary switch of the power supply. Therefore the EMI performance may be improved.

摘要翻译： 具有导通时间控制器，截止时间控制器，开关控制信号发生器和抖动信号发生器的控制器，其中抖动信号发生器将抖动耦合到主开关的导通时间或关断时间 电源。 因此，可以提高EMI性能。

公开(公告)号：US08803719B2

公开(公告)日：2014-08-12

申请号：US13538940

申请日：2012-06-29

申请人： Yike Li ,  Xiaoyu Xi ,  Fei Wang ,  Zhengxing Li

发明人： Yike Li ,  Xiaoyu Xi ,  Fei Wang ,  Zhengxing Li

IPC分类号： H03M1/66

CPC分类号： H03K5/1532

摘要： A sample and hold circuit and the method thereof are disclosed. The sample and hold circuit may be applied in voltage regulators or other circuits. The sample and hold circuit comprises: an input terminal configured to receive an input signal; an output terminal configured to provide an output signal; a control circuit configured to receive the input signal and the output signal, and wherein based on the input signal and the output signal, the control circuit generates a digital signal, and wherein the digital signal increases when the output signal is lower than the input signal, and maintains when the output signal is larger than or equal to the input signal; a digital-to-analog converter (DAC) configured to convert the digital signal to the output signal.

摘要翻译： 公开了采样保持电路及其方法。 采样保持电路可以应用在电压调节器或其他电路中。 采样和保持电路包括：输入端，被配置为接收输入信号; 输出端子，被配置为提供输出信号; 控制电路，被配置为接收所述输入信号和所述输出信号，并且其中基于所述输入信号和所述输出信号，所述控制电路产生数字信号，并且其中当所述输出信号低于所述输入信号时，所述数字信号增加 并且当输出信号大于或等于输入信号时保持; 配置为将数字信号转换为输出信号的数模转换器（DAC）。

公开(公告)号：US20120218797A1

公开(公告)日：2012-08-30

申请号：US13400890

申请日：2012-02-21

申请人： Yike Li ,  Changjiang Chen ,  Rui Wang

发明人： Yike Li ,  Changjiang Chen ,  Rui Wang

IPC分类号： H02M7/217

CPC分类号： H02M1/08 ,  H02M7/217

摘要： The embodiments of the present circuit and method disclose a bridge rectifier and a driving circuit. The bridge rectifier having a first input, a second input, a first output, and a second output may comprise two high side diodes and two low side switches. The driving circuit may be coupled to the first input of the bridge rectifier and the second input of the bridge rectifier, and the driving circuit may be configured to provide a first driving signal and a second driving signal. The first driving signal may be coupled to a first low side switch and the second driving signal may be coupled to a second low side switch. The first driving signal may be limited to less than a first predetermined driving voltage and the second driving signal may be limited to less than a second predetermined driving voltage.

摘要翻译： 本电路和方法的实施例公开了桥式整流器和驱动电路。 具有第一输入，第二输入，第一输出和第二输出的桥式整流器可以包括两个高侧二极管和两个低侧开关。 驱动电路可以耦合到桥式整流器的第一输入端和桥式整流器的第二输入端，并且驱动电路可以被配置为提供第一驱动信号和第二驱动信号。 第一驱动信号可以耦合到第一低侧开关，并且第二驱动信号可以耦合到第二低侧开关。 第一驱动信号可以被限制为小于第一预定驱动电压，并且第二驱动信号可以被限制为小于第二预定驱动电压。