公开(公告)号：US20130169249A1

公开(公告)日：2013-07-04

申请号：US13449321

申请日：2012-04-18

申请人： Li-Min Lee ,  Quan Gan ,  Chung-Che Yu ,  Shian-Sung Shiu

发明人： Li-Min Lee ,  Quan Gan ,  Chung-Che Yu ,  Shian-Sung Shiu

IPC分类号： G05F1/00

CPC分类号： H02M3/1584

摘要： A multi-phase DC-DC converter and a method of controlling a multi-phase DC-DC converter are disclosed. The multi-phase DC-DC converter is adapted to control a plurality of channels in a multi-phase DC-DC converting circuit for providing an output voltage. The multi-phase DC-DC converter comprises a constant on unit, a plurality of PWM units and a pulse width logic unit. The constant on unit determines a time point of generating a turning on signal indicative of a preset time period according to the output voltage. Each PWM unit generates a PWM signal, and a pulse width thereof is determined according to the turning on signal and currents of the channels. The pulse width logic unit controls the channels according to the corresponding PWM signals generated by the plurality of PWM units.

摘要翻译： 公开了一种多相DC-DC转换器和一种控制多相DC-DC转换器的方法。 多相DC-DC转换器适于在多相DC-DC转换电路中控制多个通道以提供输出电压。 多相DC-DC转换器包括恒定单元，多个PWM单元和脉冲宽度逻辑单元。 常数单元根据输出电压确定产生指示预设时间段的导通信号的时间点。 每个PWM单元产生PWM信号，并且其脉冲宽度根据通道的导通信号和电流确定。 脉冲宽度逻辑单元根据由多个PWM单元产生的对应的PWM信号控制信道。

公开(公告)号：US09024611B2

公开(公告)日：2015-05-05

申请号：US13585811

申请日：2012-08-14

申请人： Li-Min Lee ,  Quan Gan ,  Shian-Sung Shiu ,  Chung-Che Yu

发明人： Li-Min Lee ,  Quan Gan ,  Shian-Sung Shiu ,  Chung-Che Yu

IPC分类号： G05F1/10 ,  H02M3/156 ,  H02M1/32 ,  H01L21/00 ,  H02H3/10 ,  H02H7/122 ,  H02M3/158

CPC分类号： H02M3/156 ,  H01L21/00 ,  H02H3/10 ,  H02H7/1222 ,  H02H7/1227 ,  H02M1/32 ,  H02M3/158

摘要： A controller with a multi-function pin, adapted to control a converting circuit according to a control signal for converting an input voltage into an output voltage, is disclosed. The controller has the multi-function pin, an enable unit, an over-current detecting unit and a logic control unit. The enable unit is coupled to the multi-function pin for receiving an enable signal and activates the controller in response to the enable signal. The over-current detecting is coupled to the multi-function pin and determines an over-current value according to an over-current set resistance coupled between the multi-function pin and a voltage source. The over-current detecting unit generates an over-current protection signal according to the over-current value and a current flowing through the converting circuit. The logic control unit determines whether executing an over-current protection according to the over-current protection signal.

摘要翻译： 公开了一种具有多功能引脚的控制器，其适于根据用于将输入电压转换为输出电压的控制信号来控制转换电路。 控制器具有多功能引脚，使能单元，过流检测单元和逻辑控制单元。 使能单元耦合到多功能引脚，用于接收使能信号，并响应于使能信号激活控制器。 过电流检测耦合到多功能引脚，并根据耦合在多功能引脚和电压源之间的过电流设定电阻确定过电流值。 过流检测单元根据过电流值和流过转换电路的电流产生过电流保护信号。 逻辑控制单元根据过电流保护信号判定是否执行过电流保护。

公开(公告)号：US08907646B2

公开(公告)日：2014-12-09

申请号：US13236613

申请日：2011-09-19

申请人： Li-Min Lee ,  Chung-Che Yu ,  Shian-Sung Shiu ,  Quan Gan

发明人： Li-Min Lee ,  Chung-Che Yu ,  Shian-Sung Shiu ,  Quan Gan

IPC分类号： H02M3/156 ,  H02M3/158 ,  H02M1/00

CPC分类号： H02M3/158 ,  H02M2001/0025

摘要： A power converting circuit and a feedback control circuit for the power converting circuit are disclosed. The feedback control circuit comprises a feedback controller and a level controlling unit. The feedback controller generates a feedback control signal according to a reference voltage signal and a feedback signal. The level controlling unit receives one of the reference voltage signal and the feedback signal and modules a level of the received signal from a first level to a second level with time according to a level adjusting signal.

摘要翻译： 公开了一种功率转换电路和用于功率转换电路的反馈控制电路。 反馈控制电路包括反馈控制器和电平控制单元。 反馈控制器根据参考电压信号和反馈信号产生反馈控制信号。 电平控制单元接收参考电压信号和反馈信号中的一个，并且根据电平调整信号随时间将接收信号的电平从第一电平到第二电平模拟。

公开(公告)号：US20130271097A1

公开(公告)日：2013-10-17

申请号：US13585811

申请日：2012-08-14

申请人： Li-Min Lee ,  Quan Gan ,  Shian-Sung Shiu ,  Chung-Che Yu

发明人： Li-Min Lee ,  Quan Gan ,  Shian-Sung Shiu ,  Chung-Che Yu

IPC分类号： G05F1/10

CPC分类号： H02M3/156 ,  H01L21/00 ,  H02H3/10 ,  H02H7/1222 ,  H02H7/1227 ,  H02M1/32 ,  H02M3/158

摘要： A controller with a multi-function pin, adapted to control a converting circuit according to a control signal for converting an input voltage into an output voltage, is disclosed. The controller has the multi-function pin, an enable unit, an over-current detecting unit and a logic control unit. The enable unit is coupled to the multi-function pin for receiving an enable signal and activates the controller in response to the enable signal. The over-current detecting is coupled to the multi-function pin and determines an over-current value according to an over-current set resistance coupled between the multi-function pin and a voltage source. The over-current detecting unit generates an over-current protection signal according to the over-current value and a current flowing through the converting circuit. The logic control unit determines whether executing an over-current protection according to the over-current protection signal.

摘要翻译： 公开了一种具有多功能引脚的控制器，其适于根据用于将输入电压转换为输出电压的控制信号来控制转换电路。 控制器具有多功能引脚，使能单元，过流检测单元和逻辑控制单元。 使能单元耦合到多功能引脚，用于接收使能信号，并响应于使能信号激活控制器。 过电流检测耦合到多功能引脚，并根据耦合在多功能引脚和电压源之间的过电流设定电阻确定过电流值。 过流检测单元根据过电流值和流过转换电路的电流产生过电流保护信号。 逻辑控制单元根据过电流保护信号判定是否执行过电流保护。

公开(公告)号：US20120268085A1

公开(公告)日：2012-10-25

申请号：US13236613

申请日：2011-09-19

申请人： Li-Min Lee ,  Chung-Che Yu ,  Shian-Sung Shiu ,  Quan Gan

发明人： Li-Min Lee ,  Chung-Che Yu ,  Shian-Sung Shiu ,  Quan Gan

IPC分类号： G05F1/10

CPC分类号： H02M3/158 ,  H02M2001/0025

摘要： A power converting circuit and a feedback control circuit for the power converting circuit are disclosed. The feedback control circuit comprises a feedback controller and a level controlling unit. The feedback controller generates a feedback control signal according to a reference voltage signal and a feedback signal. The level controlling unit receives one of the reference voltage signal and the feedback signal and modules a level of the received signal from a first level to a second level with time according to a level adjusting signal.

摘要翻译： 公开了一种功率转换电路和用于功率转换电路的反馈控制电路。 反馈控制电路包括反馈控制器和电平控制单元。 反馈控制器根据参考电压信号和反馈信号产生反馈控制信号。 电平控制单元接收参考电压信号和反馈信号中的一个，并且根据电平调整信号随时间将接收信号的电平从第一电平到第二电平模拟。

公开(公告)号：US08971059B2

公开(公告)日：2015-03-03

申请号：US13447285

申请日：2012-04-16

申请人： Ke Peng ,  Li-Min Lee ,  Chung-Che Yu ,  Shian-Sung Shiu

发明人： Ke Peng ,  Li-Min Lee ,  Chung-Che Yu ,  Shian-Sung Shiu

IPC分类号： H02M3/335 ,  H02H7/10 ,  H02M1/36 ,  H02M3/337 ,  H02M1/00

CPC分类号： H02H7/10 ,  H02M1/36 ,  H02M3/335 ,  H02M3/3376 ,  H02M2001/0058 ,  Y02B70/1433 ,  Y02B70/1491 ,  Y02P80/112

摘要： A current detecting circuit detects a resonant current in a primary side of a resonant converting circuit to generate a current detecting signal. An output detecting circuit generates a feedback signal according to the output voltage. A resonant controller generates a clock signal and adjusts an operating frequency of the clock signal in response to the feedback signal for modulating the output voltage of the resonant circuit. The resonant controller includes a resonance deviation protection unit which detects the current detecting signal according to a phase of the clock signal to determine whether the resonant circuit enters a region of zero current switching or not. When the resonant circuit enters the region of zero current switching, the resonant controller executes a corresponding protection process in response to that the resonant controller operates in a starting mode or a normal operating mode.

摘要翻译： 电流检测电路检测谐振转换电路的初级侧的谐振电流以产生电流检测信号。 输出检测电路根据输出电压产生反馈信号。 谐振控制器响应于用于调制谐振电路的输出电压的反馈信号而产生时钟信号并调整时钟信号的工作频率。 谐振控制器包括谐振偏差保护单元，其根据时钟信号的相位检测电流检测信号，以确定谐振电路是否进入零电流切换的区域。 当谐振电路进入零电流切换区域时，谐振控制器响应于谐振控制器在启动模式或正常工作模式下运行而执行相应的保护处理。

公开(公告)号：US08421511B2

公开(公告)日：2013-04-16

申请号：US12909838

申请日：2010-10-22

申请人： Li-Min Lee ,  Shian-Sung Shiu ,  Chung-Che Yu ,  Ji-Ming Chen

发明人： Li-Min Lee ,  Shian-Sung Shiu ,  Chung-Che Yu ,  Ji-Ming Chen

IPC分类号： H03K7/08

CPC分类号： H02M1/08

摘要： A pulse width modulation signal controlling apparatus including a signal pin, a core circuit, a setting judging circuit, a signal adjusting and selecting circuit, and a timer circuit is disclosed. The signal pin is connected to a setting device for receiving an external input signal. The setting judging circuit receives and compares a setting signal with a reference value to generate a setting judgment result. The signal adjusting and selecting circuit couples the signal pin to the setting judging circuit and adjusts the external input signal into the setting signal according to the setting device in a first state, and couples the signal pin to the core circuit in a second state. The timer circuit controls the state of the signal adjusting and selecting circuit, wherein the timer circuit sets the signal adjusting and selecting circuit in the first state during a predetermined time period.

摘要翻译： 公开了一种包括信号引脚，核心电路，设定判断电路，信号调整和选择电路以及定时器电路的脉宽调制信号控制装置。 信号引脚连接到用于接收外部输入信号的设置装置。 设置判断电路接收并将设置信号与参考值进行比较以产生设置判断结果。 信号调节和选择电路将信号引脚耦合到设置判断电路，并根据第一状态的设置装置将外部输入信号调整为设置信号，并将信号引脚耦合到核心电路处于第二状态。 定时器电路控制信号调整和选择电路的状态，其中定时器电路在预定时间段内将信号调节和选择电路设置在第一状态。

公开(公告)号：US08334661B2

公开(公告)日：2012-12-18

申请号：US12886504

申请日：2010-09-20

申请人： Li-Min Lee ,  Chung-Che Yu ,  Shian-Sung Shiu ,  Xi Tu

发明人： Li-Min Lee ,  Chung-Che Yu ,  Shian-Sung Shiu ,  Xi Tu

IPC分类号： G05F1/00

CPC分类号： H05B33/0815 ,  H05B33/0848

摘要： An exemplary embodiment of the invention provides a set of an initial value of an error amplifying signal in the feedback control circuit for feedback control, so as to reduce the time and the amplitude of oscillation of the error amplifying signal. Accordingly, a feedback control circuit and a power converting circuit provided in an exemplary embodiment of the invention not only reduce the degree and the time of overshoot but also provide accurate and stable feedback control.

摘要翻译： 本发明的示例性实施例提供了用于反馈控制的反馈控制电路中的误差放大信号的初始值的集合，以便减少误差放大信号的时间和振幅。 因此，在本发明的示例性实施例中提供的反馈控制电路和功率转换电路不仅减小过冲的程度和时间，而且还提供准确和稳定的反馈控制。

公开(公告)号：US20120268088A1

公开(公告)日：2012-10-25

申请号：US13284974

申请日：2011-10-30

申请人： Li-Min Lee ,  Chung-Che Yu ,  Shian-Sung Shiu ,  Chao Shao

发明人： Li-Min Lee ,  Chung-Che Yu ,  Shian-Sung Shiu ,  Chao Shao

IPC分类号： G05F1/46

CPC分类号： H02M3/1588 ,  H02M2001/0022 ,  H02M2001/0025 ,  Y02B70/1466

摘要： A constant on-time period of a DC to DC buck converting controller is adjusted according to a level of a preset output voltage. Therefore, the DC to DC buck converting controller of the present invention is suitable for any applications with different requests of output voltages or different operating mode.

摘要翻译： DC-DC降压转换控制器的恒定导通时间段根据预设输出电压的电平进行调整。 因此，本发明的DC-DC降压转换控制器适用于具有不同输出电压或不同工作模式要求的任何应用。

公开(公告)号：US20120268011A1

公开(公告)日：2012-10-25

申请号：US13244653

申请日：2011-09-25

申请人： Shian-Sung Shiu ,  Li-Min Lee ,  Chung-Che Yu ,  Xi Tu ,  Ying Wang

发明人： Shian-Sung Shiu ,  Li-Min Lee ,  Chung-Che Yu ,  Xi Tu ,  Ying Wang

IPC分类号： H05B37/02

CPC分类号： H05B33/0815 ,  H05B33/0827

摘要： An LED driving circuit includes a first and a second LED modules, a first and a second switching converters, an extreme voltage detecting and selecting circuit, a current balance circuit and a controller. The first switching converter transforms electric power of an input power supply into a first output voltage for lighting the first LED module. The second switching converter transforms electric power of the input power supply into a second output voltage for lighting the second LED module. The current balance circuit balances the currents flowing through the first and the second LED modules. The extreme voltage detecting and selecting circuit detects the first and the second LED modules and selects to output one of detecting results. The controller controls the transforming of the first switching converter and the second switching converter to light the first and the second LED modules in response to the outputted detecting result.

摘要翻译： LED驱动电路包括第一和第二LED模块，第一和第二开关转换器，极值电压检测和选择电路，电流平衡电路和控制器。 第一开关转换器将输入电源的电力变换为第一输出电压以点亮第一LED模块。 第二开关转换器将输入电源的电力转换成用于照亮第二LED模块的第二输出电压。 电流平衡电路平衡流经第一和第二LED模块的电流。 极端电压检测和选择电路检测第一和第二LED模块，并选择输出检测结果之一。 控制器控制第一开关转换器和第二开关转换器的变换，以响应于输出的检测结果点亮第一和第二LED模块。