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1.发明申请公开(公告)号：US20210013809A1
公开(公告)日：2021-01-14
申请号：US16737923
申请日：2020-01-09
发明人： Chi-Pin Chen
摘要： A primary controller applied to a primary side of a power converter includes a current compensation circuit and a compensation voltage generation circuit. The current compensation circuit is used for generating a compensation current to a sensing resistor of the primary side according to a direct voltage and an auxiliary voltage, wherein the auxiliary voltage corresponds to an output voltage of a secondary side of the power converter, and the compensation current changes a peak voltage of the primary side. The compensation voltage generation circuit is used for generating a compensation voltage according to a reference current, a discharge time of the secondary side, and a peak current, wherein the reference current is changed with the output voltage. The compensation current and the reference current are used for making an output current of the secondary side of the power converter not be changed with the output voltage.
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公开(公告)号：US10571986B2
公开(公告)日：2020-02-25
申请号：US15956739
申请日：2018-04-18
发明人： Ming-Hung Chien , Chun-Hsin Li , Ching-Tsan Lee
摘要： A power delivery controller applied to a power converter includes a voltage compensation circuit and a comparator. The voltage compensation circuit is used for generating a compensation reference voltage, receiving a response signal through a universal serial bus type-C cable, and generating a response voltage when an electronic device coupled to the universal serial bus type-C cable generates the response signal corresponding to a Biphase Mark Coding (BMC) signal, wherein the response voltage and the compensation reference voltage have information relative to an internal resistor of the universal serial bus type-C cable. The comparator is used for generating a comparison signal according to the response voltage and the compensation reference voltage, wherein the power converter transmits power to the electronic device according to a specification corresponding to universal serial bus power delivery (USB-PD) after the comparator generates the comparison signal.
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公开(公告)号：US10204896B2
公开(公告)日：2019-02-12
申请号：US15841301
申请日：2017-12-14
发明人： Jen-Hao Yeh , Chiung-Feng Chou
IPC分类号： H01L27/02 , H01L23/34 , H01L29/78 , H01L21/265 , H01L29/06 , H01L21/762
摘要： A vertical double diffusion metal-oxide-semiconductor power device with thermal sensitivity unit includes a vertical double diffusion metal-oxide-semiconductor power transistor and at least one thermal sensitivity unit. The vertical double diffusion metal-oxide-semiconductor power transistor includes a first metal layer, a substrate layer, an epitaxy layer, a second metal layer, and a plurality of first polysilicon layers, wherein each first polysilicon layer of the plurality of first polysilicon layers corresponds to a first oxide layer, a first doping well and a second doping well with second conductivity type, a first doped region and a second doped region with first conductivity type, and a second oxide layer. The at least one thermal sensitivity unit is used for detecting a temperature when the vertical double diffusion metal-oxide-semiconductor power transistor operates, and the vertical double diffusion metal-oxide-semiconductor power transistor and the at least one thermal sensitivity unit share a same process.
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公开(公告)号：US09755421B2
公开(公告)日：2017-09-05
申请号：US14599554
申请日：2015-01-19
发明人： Chih-Chi Chang , Da-Chun Wei , Ming-Chang Tsou , Meng-Jen Tsai
CPC分类号： H02H5/042 , H02H3/20 , H02H7/1213
摘要： A control circuit applied to a power converter includes a multi-functional pin, a zero-crossing signal generator, and an over-voltage detector. The multi-functional pin is used for receiving an auxiliary current generated by an auxiliary winding of the power converter, and an input current. The zero-crossing signal generator is used for generating a zero-crossing signal according to the auxiliary current. The over-voltage detector is used for generating an over-voltage signal according to the auxiliary current. The control circuit generates a switch control signal to the power switch according to the zero-crossing signal, or generates an over-voltage protection signal to the power switch according to the over-voltage signal.
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公开(公告)号：US09613572B2
公开(公告)日：2017-04-04
申请号：US14733978
申请日：2015-06-09
发明人： Ching-Tsan Lee
CPC分类号： G09G3/3406 , G09G3/36 , G09G2320/064 , G09G2320/0666 , H05B33/0815 , H05B33/0851
摘要： A controller for dimming light-emitting diodes includes a pulse width modulation pin, a low-pass filter, a frequency detection unit, and a control signal generation module. The low-pass filter generates a direct current signal according to a pulse width modulation signal generated by a micro-controller. The frequency detection unit generates a logic value according to a threshold and the pulse width modulation signal. The control signal generation module generates a switch control signal to a first switch connected to the light-emitting diodes in series according to the direct current signal, the logic value, a reference voltage, and the pulse width modulation signal. When a frequency of the pulse width modulation signal is lower than the threshold, the controller enters a digital dimming mode; and when the frequency of the pulse width modulation signal is higher than the threshold, the controller enters an analog dimming mode.
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公开(公告)号：US09405354B2
公开(公告)日：2016-08-02
申请号：US14568124
申请日：2014-12-12
发明人： Yu-Yun Huang
CPC分类号： G06F1/324 , G06F1/3296 , H02M1/32 , H02M3/33507
摘要： A power supply has an inductor and determines loading state of the power supply according to a compensation signal. When the loading state is determined to be a light loading state or a no-loading state, a switch is operated at a low operating frequency. When the loading state is determined to be a heavy loading state, the switch is operated at a high operating frequency. If the compensation signal exceeds a critical value, it is determined that the loading state is an overloaded state. When the overloaded state continues past a tolerable duration, the switch is turned off. The tolerable duration is determined by an external capacitor and is independent of the operating frequency.
摘要翻译： 电源具有电感器，并根据补偿信号确定电源的负载状态。 当加载状态被确定为轻负载状态或无负载状态时，开关以低工作频率工作。 当装载状态被确定为重负载状态时，开关以高工作频率工作。 如果补偿信号超过临界值，则确定负载状态为过载状态。 当过载状态持续超过可允许的持续时间时，开关被关闭。 可容忍的持续时间由外部电容确定，与工作频率无关。
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7.发明授权公开(公告)号：US09350237B2
公开(公告)日：2016-05-24
申请号：US14543834
申请日：2014-11-17
发明人： Yu-Bin Wang
CPC分类号： H02M3/156 , H02M1/08 , H02M2001/0009 , H02M2001/0058 , H03K17/284 , Y02B70/1491
摘要： A control circuit includes an auxiliary pin for receiving an auxiliary voltage of an auxiliary winding of a power converter; a first detection unit for detecting a first time point when the auxiliary voltage begins resonance, and outputting a first detection signal according to the first time point; a second detection unit for detecting a second time point when the auxiliary voltage reaches a predetermined voltage, and outputting a second detection signal according to the second time point; a delay time controller for obtaining a delay time according to a output time difference between the first detection signal and the second detection signal, and outputting a driving signal with delay of the delay time when receiving the second detection signal; and a gate control signal generator for generating a gate control signal to a power switch of the power converter according to the driving signal of the delay time controller.
摘要翻译： 控制电路包括用于接收功率转换器的辅助绕组的辅助电压的辅助引脚; 第一检测单元，用于检测辅助电压开始共振时的第一时间点，并根据第一时间点输出第一检测信号; 第二检测单元，用于当辅助电压达到预定电压时检测第二时间点，并根据第二时间点输出第二检测信号; 延迟时间控制器，用于根据第一检测信号和第二检测信号之间的输出时间差获得延迟时间，并且当接收到第二检测信号时输出具有延迟时间的延迟的驱动信号; 以及门控制信号发生器，用于根据延迟时间控制器的驱动信号向功率转换器的电源开关产生门控制信号。
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8.发明授权Power control circuit detecting a phase of a burst initializing signal and power controlling method detecting a phase of a burst initializing signal 有权检测脉冲串初始化信号的相位的功率控制电路和检测脉冲串初始化信号的相位的功率控制方法公开(公告)号：US09190912B2
公开(公告)日：2015-11-17
申请号：US13330652
申请日：2011-12-19
申请人： Wen-Chung Yeh
发明人： Wen-Chung Yeh
CPC分类号： H02M3/33507 , H02M2001/0035
摘要： In a switching mode power supply, a power controlling circuit includes a phase generator and a phase controller. The phase generator provides a clock signal. The phase controller detects phases of a phase reference signal and a burst initialization signal so as to generate a burst signal, and causes a phase of the burst signal to not be earlier than the phase of the group reference signal. The burst signal is utilized for switching the power supply between a non-switching state and a switching state. The group reference signal is generated according to the clock signal and has a lower frequency than the clock signal. The burst initialization signal is controlled by an output voltage source of the power supply.
摘要翻译： 在开关模式电源中，功率控制电路包括相位发生器和相位控制器。 相位发生器提供时钟信号。 相位控制器检测相位参考信号和脉冲串初始化信号的相位，以产生脉冲串信号，并使脉冲串信号的相位不早于组参考信号的相位。 突发信号用于在非切换状态和切换状态之间切换电源。 组参考信号根据时钟信号产生，并且具有比时钟信号更低的频率。 突发初始化信号由电源的输出电压源控制。
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公开(公告)号：US09036377B2
公开(公告)日：2015-05-19
申请号：US13470354
申请日：2012-05-13
申请人： Yuan-Wen Chang , Ren-Yi Chen , Yi-Lun Shen
发明人： Yuan-Wen Chang , Ren-Yi Chen , Yi-Lun Shen
摘要： A method for controlling voltage crossing a power switch of a switched-mode power converter includes the steps of: controlling a switch frequency of the power switch of the switched-mode power converter to a first frequency as activating the switched-mode power converter; and then changing the switch frequency of the power switch to a second frequency after the switched-mode power converter is activated for a predetermined time; wherein the first frequency is lower than the second frequency.
摘要翻译： 一种用于控制与交换模式功率转换器的电源开关交叉的电压的方法包括以下步骤：将开关模式功率转换器的电源开关的开关频率控制为启动开关模式功率转换器的第一频率; 然后在开关模式功率转换器激活预定时间之后将电源开关的开关频率改变到第二频率; 其中所述第一频率低于所述第二频率。
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10.发明授权Light emitting diode driving integrated circuit with a multi-step current setting function and method of setting a multi-step current of a light emitting diode driving integrated circuit 有权具有多步电流设定功能的发光二极管驱动集成电路和设置发光二极管驱动集成电路的多级电流的方法公开(公告)号：US09006985B2
公开(公告)日：2015-04-14
申请号：US13647384
申请日：2012-10-09
发明人： Chung-Wei Lin
CPC分类号： H05B33/0812 , H05B33/0815 , Y02B20/345
摘要： A light emitting diode driving integrated circuit with a multi-step current setting function includes a regulator circuit, a variable resistor circuit, and a current generation unit. The regulator circuit provides a supply voltage to a first terminal of at least one series of light emitting diodes to drive the at least one series of light emitting diodes, and regulates a second terminal voltage of the at least one series of light emitting diodes to a target voltage. The variable resistor circuit is used for changing a resistance of the variable resistor circuit in a plurality of steps according to a switching signal. The current generation unit is coupled to the variable resistor circuit for changing current flowing through the at least one series of light emitting diodes in a plurality of steps according to a reference voltage and variation of the resistance of the variable resistor circuit.
摘要翻译： 具有多级电流设定功能的发光二极管驱动集成电路包括调节电路，可变电阻电路和电流产生单元。 调节器电路向至少一系列发光二极管的第一端提供电源电压以驱动至少一系列发光二极管，并将至少一系列发光二极管的第二端电压调节到 目标电压。 可变电阻电路用于根据切换信号在多个步骤中改变可变电阻电路的电阻。 电流发生单元耦合到可变电阻电路，用于根据参考电压和可变电阻电路的电阻的变化，以多个步骤改变流过至少一系列发光二极管的电流。
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