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公开(公告)号：US20160049865A1
公开(公告)日：2016-02-18
申请号：US14809699
申请日：2015-07-27
发明人： Jyun-Che HO , Tzu-Chen LIN , Isaac Y. CHEN , Yi-Wei LEE
CPC分类号： H02M1/36 , H02M3/33507 , H02M2001/327
摘要： A fast start-up circuit and a method of a flyback power supply utilize a charging current that is related to an input voltage of the flyback power supply to charge a control terminal of a power switch of the flyback power supply during a start-up mode. Accordingly, the power switch can be switched, and a supply voltage of the flyback power supply rises. When an output terminal of the flyback power supply occurs a short circuit, the fast start-up circuit and the method of the present invention will decrease a maximum of a current through the power switch, thereby avoiding that the power switch is overheating.
摘要翻译： 快速启动电路和回扫电源的方法利用与回扫电源的输入电压相关的充电电流，以在启动模式期间对反激式电源的电源开关的控制端子充电 。 因此，可以切换电源开关，并且回扫电源的电源电压上升。 当回扫电源的输出端子发生短路时，快速启动电路和本发明的方法将减小通过电源开关的电流的最大值，从而避免电源开关过热。
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12.发明申请VOLTAGE CONVERTING CONTROLLER, VOLTAGE CONVERTING CIRCUIT, AND CONTROL METHOD FOR VOLTAGE CONVERTING 有权电压转换控制器，电压转换电路和电压转换控制方法公开(公告)号：US20150372599A1
公开(公告)日：2015-12-24
申请号：US14475350
申请日：2014-09-02
发明人： Chuh Ching Lee , Chien-Fu Tang , Chun Shih Huang
IPC分类号： H02M3/335
CPC分类号： H02M3/33507 , H02M3/33523 , H02M2001/0019
摘要： A voltage converting controller. When output current increases from a first current value to a second current value, the voltage converting controller temporarily sets a control frequency to a maximum frequency value. After a period of time, the voltage converting controller sets the control frequency to a target control frequency corresponding to the second current value. And, when the output current increases from the first current value to the second current value, the voltage converting controller temporarily sets a secondary-side output voltage to an transient output value; and after a period of time, the voltage converting controller sets a steady state value of the secondary-side output voltage to an output voltage steady state value corresponding to the second current value.
摘要翻译： 电压转换控制器。 当输出电流从第一电流值增加到第二电流值时，电压转换控制器将控制频率暂时设定为最大频率值。 一段时间后，电压转换控制器将控制频率设定为与第二电流值对应的目标控制频率。 而且，当输出电流从第一电流值增加到第二电流值时，电压转换控制器暂时将次级侧输出电压设定为瞬态输出值; 并且经过一段时间后，电压转换控制器将次级侧输出电压的稳态值设定为对应于第二电流值的输出电压稳态值。
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公开(公告)号：US09215771B2
公开(公告)日：2015-12-15
申请号：US13973681
申请日：2013-08-22
发明人： Chien-Hua Lin , Shui-Mu Lin
CPC分类号： H05B33/0842
摘要： A light emitting diode driver includes: a serial-to-parallel conversion unit converting, based on a reference clock signal, a serial input signal carrying a number (N) of M-bit gray codes into a parallel input signal carrying the M-bit gray codes; a counting unit counting an output control signal to output a counting value; a data buffer unit storing, based on a latch signal, the M-bit gray codes carried by the parallel input signal, and outputting, based on the counting value and the M-bit gray codes, an N-bit signal consisting of N bits, each of which is an ith one of M bits of a respective M-bit gray code, where i is associated with the counting value; and an output unit generating a number (N) of driving current signals based on at least the N-bit signal.
摘要翻译： 发光二极管驱动器包括：串行到并行转换单元，将基于参考时钟信号的携带M位灰度代码的（N）个M位的串行输入信号转换为携带M位的并行输入信号 灰色代码; 计数单元，对输出控制信号进行计数以输出计数值; 数据缓冲器单元，基于锁存信号存储并行输入信号所携带的M位灰色代码，并根据计数值和M位灰度代码输出由N位组成的N位信号 ，其中每个是相应M位灰度码的M位中的第i个，其中i与计数值相关联; 以及输出单元，至少基于N位信号生成数量（N）个驱动电流信号。
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14.发明申请SOFT-START SWITCHING POWER CONVERTING APPARATUS WITH PULSE-FREQUENCY MODULATION TECHNIQUE 审中-公开软启动切换功率转换装置，具有脉冲频率调制技术公开(公告)号：US20150249392A1
公开(公告)日：2015-09-03
申请号：US14713654
申请日：2015-05-15
发明人： Jyun-Che Ho , Jiun-Hung Pan , Chien-Fu Tang , Isaac Y. Chen
CPC分类号： H02M3/33507 , H02M3/33515 , H02M3/33523 , H02M3/36
摘要： A switching power converting apparatus includes a voltage conversion module, a detecting unit, and a switching signal generating unit. The voltage conversion module converts an input voltage into an output voltage associated with a secondary side current, which flows through a secondary winding of a transformer and is generated based on a switching signal. The detecting unit generates a detecting signal based on the output voltage and a predetermined reference voltage. The switching signal generating unit generates the switching signal based on the detecting signal and an adjusting signal so that the secondary side current is gradually increased during a start period of the switching power converting apparatus.
摘要翻译： 开关电源转换装置包括电压转换模块，检测单元和开关信号产生单元。 电压转换模块将输入电压转换为与次级侧电流相关联的输出电压，该二次侧电流流过变压器的次级绕组并且基于开关信号产生。 检测单元基于输出电压和预定参考电压产生检测信号。 切换信号生成部基于检测信号和调整信号生成切换信号，使得在开关电力转换装置的起动期间次级侧电流逐渐增大。
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公开(公告)号：US09093914B2
公开(公告)日：2015-07-28
申请号：US13871286
申请日：2013-04-26
发明人： Pei Kai Tseng , Chien Fu Tang , Isaac Y. Chen
CPC分类号： H02M1/36 , H02J7/0016 , H02J7/345 , H02M3/07
摘要： A bootstrap circuit includes: a charging voltage source; a charging diode, having an anode coupled to the charging voltage source; a high-voltage transistor, having a control terminal defined as a first connecting node and a channel coupled between a cathode of the charging diode and a bootstrap capacitor; a logic control circuit, having a first and a second logic outputs, and a logic input for receiving a charging command; a high-voltage control transistor, having a control terminal defined as a second connecting node and a channel coupled between charging voltage source and the first connecting node; a cut-off resistor, coupled between the first and the second connecting nodes; a charging control transistor, having a channel coupled between the second connecting node and a ground terminal, and a control terminal coupled to the second logic output; a control capacitor, coupled between the first connecting node and the first logic output.
摘要翻译： 引导电路包括：充电电压源; 充电二极管，具有耦合到所述充电电压源的阳极; 具有被定义为第一连接节点的控制端子和耦合在充电二极管的阴极和自举电容器之间的通道的高压晶体管; 具有第一和第二逻辑输出的逻辑控制电路和用于接收充电命令的逻辑输入; 高压控制晶体管，其具有被定义为第二连接节点的控制端子和耦合在充电电压源与第一连接节点之间的通道; 截止电阻器，耦合在所述第一和第二连接节点之间; 具有耦合在第二连接节点和接地端子之间的通道的充电控制晶体管和耦合到第二逻辑输出的控制端子; 耦合在第一连接节点和第一逻辑输出之间的控制电容器。
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公开(公告)号：US20150137611A1
公开(公告)日：2015-05-21
申请号：US14258708
申请日：2014-04-22
发明人： Wei-Jen Huang , Shui-Mu Lin
摘要： A power management unit, adapted to a wireless power system, includes: a rectifier, converts an AC power received by an input port thereof to a direct-current (DC) voltage outputted by a rectifying output terminal thereof; a first switch, wherein a first protecting capacitor is coupled between one terminal of the input port and a channel thereof; a second switch, wherein a second protecting capacitor is coupled between the other terminal of the input port and a channel thereof; a reference voltage terminal, for providing a reference voltage; and, a comparator, including two input terminals coupled to the rectifying output terminal and the reference voltage terminal respectively, and including an output terminal coupled to both the control terminals of the first switch and the second switch.
摘要翻译： 一种适用于无线电力系统的电力管理单元，包括：整流器，将由其输入端口接收的交流电力转换成由其整流输出端子输出的直流（DC）电压; 第一开关，其中第一保护电容器耦合在所述输入端口的一个端子和其沟道之间; 第二开关，其中第二保护电容器耦合在所述输入端口的另一端和其通道之间; 参考电压端子，用于提供参考电压; 以及包括分别耦合到整流输出端子和参考电压端子的两个输入端子的比较器，并且包括耦合到第一开关和第二开关的两个控制端子的输出端子。
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公开(公告)号：US20150130523A1
公开(公告)日：2015-05-14
申请号：US14559579
申请日：2014-12-03
发明人： CHIEN-FU TANG , ISAAC Y. CHEN
IPC分类号： H03K3/84
摘要： An oscillator generates a clock signal according to a voltage, a current and a capacitance, and a frequency jitter circuit and method use a random number to modulate the voltage, the current or the capacitance, or a count value to modulate the capacitance, to jitter the frequency of the clock signal.
摘要翻译： 振荡器根据电压，电流和电容产生时钟信号，并且频率抖动电路和方法使用随机数来调制电压，电流或电容或计数值以调制电容到抖动 时钟信号的频率。
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公开(公告)号：US20140354163A1
公开(公告)日：2014-12-04
申请号：US14066268
申请日：2013-10-29
发明人： Chih-Feng Huang , Kuo-Chin Chiu
IPC分类号： H05B33/08
CPC分类号： H05B33/083
摘要： An LED driving device includes: a rectifying circuit for outputting a DC voltage to a string of M LED units; (M−1) first switching circuits each coupled between a corresponding one of first to (M−1)th LED units and ground; and a second switching circuit coupled between an Mth LED unit and ground. When the DC voltage is sufficient to turn on first to kth LED units, where 1≦k≦M, the kth LED unit is coupled to ground through first and second conductive paths provided by a resistor unit, and a corresponding first switching circuit or the second switching circuit, and each of the first to (k−1)th LED units is coupled to ground through a third conductive path provided by a corresponding first switching circuit and the resistor unit.
摘要翻译： 一种LED驱动装置，包括：整流电路，用于向一串M LED单元输出DC电压; （M-1）个第一开关电路，每个第一开关电路分别耦合在第一至第（M-1）个LED单元中的相应一个LED单元和地之间; 以及耦合在第M个LED单元和地之间的第二开关电路。 当直流电压足以使第一至第九LED单元接通时，其中第一LED单元通过由电阻器单元提供的第一和第二导电路径以及相应的第一开关电路或 第二开关电路，并且第一至第（k-1）个LED单元中的每一个通过由相应的第一开关电路和电阻器单元提供的第三导电路径耦合到地。
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公开(公告)号：US20140226372A1
公开(公告)日：2014-08-14
申请号：US13869684
申请日：2013-04-24
发明人： Chien Fu Tang , Isaac Y. Chen , Jiun Hung Pan , Yung Chih Lai , Jyun Che Ho
IPC分类号： H02M3/335
CPC分类号： H02M3/33523 , H02M3/158 , H02M2001/0009
摘要： A voltage converter circuit, includes: a power switch for generating a pulse-width-modulation (PWM) signal to drive a current load, wherein the PWM signal toggles between a first level and a second level; a sensing pin, receiving a first sensing signal when the PWM signal is at the first level, and receiving a second sensing signal when the PWM signal is at the second level; a parameter sampling and setting unit, having an input terminal coupling to the sensing pin, generating a default current or a default voltage on the sensing pin and sampling the second sensing signal to generate a sampling signal when the PWM signal is at the second level, and holding the sampling signal to set a parameter of the voltage converter circuit when the PWM signal is at the first level.
摘要翻译： 一种电压转换器电路，包括：用于产生脉宽调制（PWM）信号以驱动电流负载的电源开关，其中所述PWM信号在第一电平和第二电平之间切换; 感测引脚，当PWM信号处于第一电平时接收第一感测信号，以及当PWM信号处于第二电平时接收第二感测信号; 参数采样和设置单元，具有耦合到感测引脚的输入端，在感测引脚上产生默认电流或默认电压，并且在PWM信号处于第二电平时采样第二感测信号以产生采样信号， 并且当PWM信号处于第一电平时，保持采样信号以设置电压转换器电路的参数。
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公开(公告)号：US20140217921A1
公开(公告)日：2014-08-07
申请号：US13914667
申请日：2013-06-11
发明人： Shei Chie Yang , Shui Mu Lin , Shih Chung Wang
IPC分类号： H05B33/08
CPC分类号： H05B33/0845 , H05B33/0848
摘要： A linearly dimming circuit of a light-emitting device, includes a diming signal processing unit, having a dimming signal input terminal and a current setting output terminal, wherein the dimming signal input terminal receives a luminance percentage setting to set a luminance of the light-emitting device to be a maximal luminance multiplying the luminance percentage setting, the dimming signal processing unit generates a current percentage setting according to the luminance percentage setting, the current setting output terminal outputs a driving current setting which sets the driving current to be a maximal driving current multiplying the current percentage setting; a light-emitting device driver stage, having a current setting input terminal and a driving current output terminal, wherein the current setting input terminal couples to the current setting output terminal and receives the driving current setting, the driving current output terminal outputs the driving current to the light-emitting device.
摘要翻译： 发光装置的线性调光电路包括具有调光信号输入端子和电流设定输出端子的调光信号处理单元，其中调光信号输入端子接收亮度百分比设定以设定发光装置的亮度， 发光装置为与亮度百分比设定相乘的最大亮度，调光信号处理单元根据亮度百分比设定生成电流百分比设定，当前设定输出端子输出将驱动电流设定为最大驱动的驱动电流设定 当前乘以当前百分比设置; 具有电流设定输入端子和驱动电流输出端子的发光装置驱动级，其中电流设定输入端子耦合到电流设定输出端子并接收驱动电流设定，驱动电流输出端子输出驱动电流 到发光装置。
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