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公开(公告)号：US09219489B2
公开(公告)日：2015-12-22
申请号：US14487096
申请日：2014-09-16
发明人： Kuang-Yu Jung
CPC分类号： H03M1/0845 , H03M1/002 , H03M1/0607 , H03M1/468
摘要： A successive approximation register (SAR-ADC) including a digital-to-analog conversion (DAC) circuit, a sample-and-hold circuit, a comparison circuit and a SAR logic control circuit is provided. The DAC circuit is configured to convert an N-bits digital logic signal into a comparison signal, where N is a positive integer. The sample-and-hold circuit is configured to sample and hold an analog input signal. The comparison circuit is configured to use the analog input signal held by the sample-and-hold circuit as a basis for comparing with the comparison signal and thereby generates a comparison result signal. The SAR logic control circuit is configured to provide the N-bits digital logic signal and determine a logic state of each of bits of the digital logic signal one by one according to the comparison result signal, and thus generate a digital output signal related to the analog input signal.
摘要翻译： 提供了包括数模转换（DAC）电路，采样保持电路，比较电路和SAR逻辑控制电路的逐次逼近寄存器（SAR-ADC）。 DAC电路被配置为将N位数字逻辑信号转换成比较信号，其中N是正整数。 采样保持电路被配置为采样和保持模拟输入信号。 比较电路被配置为使用由采样保持电路保持的模拟输入信号作为与比较信号进行比较的基础，从而生成比较结果信号。 SAR逻辑控制电路被配置为提供N位数字逻辑信号，并且根据比较结果信号逐个地确定数字逻辑信号的每个比特的逻辑状态，从而生成与该数字逻辑信号有关的数字输出信号 模拟输入信号。
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2.发明授权Light emitting diode driving apparatus capable of detecting whether current leakage phenomenon occurs on LED load and light emitting diode driving method thereof 有权能够检测LED负载及其发光二极管驱动方法是否发生电流泄漏现象的发光二极管驱动装置公开(公告)号：US09148920B2
公开(公告)日：2015-09-29
申请号：US14221287
申请日：2014-03-21
发明人： Chen-Lung Kao , Zhen-Chun Liu
IPC分类号： H05B33/08
CPC分类号： H05B33/0851 , H05B33/0809 , H05B33/0815 , Y02B20/346
摘要： A light emitting diode (LED) driving apparatus and an LED driving method suitable for driving an LED load are provided. The LED driving apparatus includes a driving circuit, a feedback circuit, and a control chip. The driving circuit provides a driving voltage to one terminal of the LED load according to a pulse-width modulation (PWM) driving signal. The feedback circuit generates a feedback voltage according to a voltage on the other terminal of the LED load. The control chip is configured to generate the PWM driving signal and adjust the duty cycle of the PWM driving signal in response to the feedback voltage. If the control chip determines the PWM driving signal with a threshold duty cycle continues being output over a preset period of time, the control chip determines that the current leakage phenomenon occurs on the LED load and stops generating the PWM driving signal.
摘要翻译： 提供了一种适用于驱动LED负载的发光二极管（LED）驱动装置和LED驱动方法。 LED驱动装置包括驱动电路，反馈电路和控制芯片。 驱动电路根据脉冲宽度调制（PWM）驱动信号向LED负载的一个端子提供驱动电压。 反馈电路根据LED负载的另一端的电压产生反馈电压。 控制芯片被配置为产生PWM驱动信号，并响应于反馈电压来调节PWM驱动信号的占空比。 如果控制芯片确定在预设时间段内持续输出阈值占空比的PWM驱动信号，则控制芯片确定在LED负载上发生电流泄漏现象并停止产生PWM驱动信号。
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公开(公告)号：US09055637B2
公开(公告)日：2015-06-09
申请号：US14054836
申请日：2013-10-16
发明人： Nan-Chuan Huang , Fu-Kuo Yang
IPC分类号： H05B33/08
CPC分类号： H05B33/0815 , Y02B20/346
摘要： An LED load driving apparatus including a power conversion circuit and a control chip is provided. The power conversion circuit receives an input voltage and drives an LED load in response to a PWM signal. The control chip includes a control core circuit and a memory unit. The control core circuit is operated under a system voltage to provide the PWM signal for controlling operation of the power conversion circuit. The control core circuit is inactivated during a power-off period and restarted during a power-on period. The memory unit is operated under the input voltage and is configured to: store a dimming operation data before the control core circuit is inactivated during the power-off period; and provide the stored dimming operation data during the power-on period to the control core circuit, so as to make the control core circuit perform corresponding dimming operation relating to the LED load.
摘要翻译： 提供了包括电力转换电路和控制芯片的LED负载驱动装置。 功率转换电路响应于PWM信号接收输入电压并驱动LED负载。 控制芯片包括控制核心电路和存储器单元。 控制核心电路在系统电压下工作，以提供用于控制功率转换电路的操作的PWM信号。 控制核心电路在断电期间失效，并在上电期间重新启动。 存储器单元在输入电压下工作，并被配置为：在断电期间在控制核心电路失活之前存储调光操作数据; 并且在通电期间向控制核心电路提供存储的调光操作数据，以使控制核心电路执行与LED负载相关的相应调光操作。
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公开(公告)号：US09006980B2
公开(公告)日：2015-04-14
申请号：US13967369
申请日：2013-08-15
发明人： Shih-Chung Huang , Kuang-Yu Jung
IPC分类号： H05B41/06 , H05B41/16 , H05B41/282 , H05B41/285
CPC分类号： H05B41/16 , H05B41/2828 , H05B41/2853
摘要： An apparatus and a method for driving a fluorescent lamp are provided. The apparatus submitted by the present invention includes an LC resonator and an automatic frequency tracing circuit. The LC resonator is used for receiving and converting a square signal to generate a sinusoidal driving signal for driving the fluorescent lamp. The automatic frequency tracing circuit is used for making a frequency of the sinusoidal driving signal automatically following a resonant frequency of the LC resonator according to a feedback signal related to the sinusoidal driving signal.
摘要翻译： 提供了用于驱动荧光灯的装置和方法。 本发明提供的装置包括LC谐振器和自动频率跟踪电路。 LC谐振器用于接收和转换平方信号以产生用于驱动荧光灯的正弦驱动信号。 自动频率跟踪电路用于根据与正弦驱动信号有关的反馈信号，使LC谐振器的谐振频率自动跟随正弦驱动信号的频率。
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公开(公告)号：US20150048812A1
公开(公告)日：2015-02-19
申请号：US14275807
申请日：2014-05-12
发明人： Chiu-Yuan Lin , Chien-Pang Hung , Kuang-Yu Jung
摘要： A boost apparatus adapted for providing a direct-current (DC) output voltage to a load is provided, and the boost apparatus includes a boost power conversion circuit and a control chip. The boost power conversion circuit has a diode coupled to the load. Besides, the boost power conversion circuit is configured to receive a DC input voltage and provide the DC output voltage to the load in response to a pulse-width-modulation (PWM) signal. The control chip is coupled to the boost power conversion circuit and configured to generate the PWM signal to control the operation of the boost power conversion circuit. The control chip is also configured to stop outputting the PWM signal and enter into a shutdown state when the diode is an open circuit or a short circuit, so as to protect the boost apparatus and/or the load from being damaged.
摘要翻译： 提供了一种适于向负载提供直流（DC）输出电压的升压装置，并且升压装置包括升压功率转换电路和控制芯片。 升压功率转换电路具有耦合到负载的二极管。 此外，升压功率转换电路被配置为接收直流输入电压，并响应于脉宽调制（PWM）信号向负载提供直流输出电压。 控制芯片耦合到升压功率转换电路，并被配置为产生PWM信号以控制升压功率转换电路的操作。 控制芯片还被配置为当二极管是开路或短路时停止输出PWM信号并进入关断状态，以保护升压装置和/或负载免受损坏。
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公开(公告)号：US08884794B2
公开(公告)日：2014-11-11
申请号：US13798133
申请日：2013-03-13
发明人： Tsung-Ping Wei , Chia-Hsin Chen
摘要： A signal receiving device and an electronic apparatus using the same are provided. The signal receiving device includes a signal conversion unit, a signal analysis unit, and an impedance unit. The signal conversion unit receives an analog input signal and converts the analog input signal into a digital input signal. The signal analysis unit receives the digital input signal and analyzes a signal characteristic thereof to generate an impedance adjustment signal. The impedance unit coupled to the signal analysis unit and a signal input terminal of the signal receiving device receives the impedance adjustment signal to dynamically adjust an input impedance of the signal input terminal. Thereby, the signal receiving device analyzes an input signal to dynamically adjust the input impedance of the signal receiving device, so as to maintain an amplitude gain of the input signal to be within a limited input range of the signal receiving device.
摘要翻译： 提供一种信号接收装置和使用该装置的电子装置。 信号接收装置包括信号转换单元，信号分析单元和阻抗单元。 信号转换单元接收模拟输入信号并将模拟输入信号转换为数字输入信号。 信号分析单元接收数字输入信号并分析其信号特性以产生阻抗调整信号。 耦合到信号分析单元的阻抗单元和信号接收装置的信号输入端接收阻抗调整信号以动态地调整信号输入端的输入阻抗。 因此，信号接收装置分析输入信号以动态地调整信号接收装置的输入阻抗，以便将输入信号的振幅增益保持在信号接收装置的有限的输入范围内。
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公开(公告)号：US20140210350A1
公开(公告)日：2014-07-31
申请号：US14053609
申请日：2013-10-15
发明人： Fu-Kuo Yang , Nan-Chuan Huang
IPC分类号： H05B33/08
CPC分类号： H05B33/0815 , H05B33/0827
摘要： A load driving apparatus relating to light-emitting-diodes (LEDs) is provided. In the invention, a compensation voltage on a compensation pin (CMP) of a control chip would not be changed in response to (or with) the variation (i.e. enabling and disabling) of a pulse-width-modulation (PWM) signal for dimming. In other words, the compensation voltage on the compensation pin (CMP) of the control chip would be maintained in unchanging regardless of whether the PWM signal for dimming is enabled or disabled. Therefore, an LED string at the current switching transient does not have the generation of over-shoot current.
摘要翻译： 提供了与发光二极管（LED）相关的负载驱动装置。 在本发明中，控制芯片的补偿引脚（CMP）上的补偿电压将不会随着用于调光的脉冲宽度调制（PWM）信号的变化（或启用和禁用）而变化 。 换句话说，无论调光的PWM信号是使能还是禁止，控制芯片的补偿引脚（CMP）上的补偿电压将保持不变。 因此，在目前的开关瞬态下的LED串不会产生过冲电流。
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公开(公告)号：US20140191671A1
公开(公告)日：2014-07-10
申请号：US14054836
申请日：2013-10-16
发明人： Nan-Chuan Huang , Fu-Kuo Yang
IPC分类号： H05B33/08
CPC分类号： H05B33/0815 , Y02B20/346
摘要： An LED load driving apparatus including a power conversion circuit and a control chip is provided. The power conversion circuit receives an input voltage and drives an LED load in response to a PWM signal. The control chip includes a control core circuit and a memory unit. The control core circuit is operated under a system voltage to provide the PWM signal for controlling operation of the power conversion circuit. The control core circuit is inactivated during a power-off period and restarted during a power-on period. The memory unit is operated under the input voltage and is configured to: store a dimming operation data before the control core circuit is inactivated during the power-off period; and provide the stored dimming operation data during the power-on period to the control core circuit, so as to make the control core circuit perform corresponding dimming operation relating to the LED load.
摘要翻译： 提供了包括电力转换电路和控制芯片的LED负载驱动装置。 功率转换电路响应于PWM信号接收输入电压并驱动LED负载。 控制芯片包括控制核心电路和存储器单元。 控制核心电路在系统电压下工作，以提供用于控制功率转换电路的操作的PWM信号。 控制核心电路在断电期间失效，并在上电期间重新启动。 存储器单元在输入电压下工作，并被配置为：在断电期间在控制核心电路失活之前存储调光操作数据; 并且在通电期间向控制核心电路提供存储的调光操作数据，以使控制核心电路执行与LED负载相关的相应调光操作。
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公开(公告)号：US20140175998A1
公开(公告)日：2014-06-26
申请号：US14034569
申请日：2013-09-24
发明人： Zhen-Chun Liu , Chen-Lung Kao
IPC分类号： H05B37/02
CPC分类号： H05B41/2855 , H05B41/2825 , Y10S315/05 , Y10S315/07
摘要： A lamp driving apparatus and an illumination equipment using the same are provided. The provided lamp driving apparatus is responsible for driving a lamp. When any one of two terminals of the lamp is opened or the lamp is over-voltage, the provided driving apparatus stops driving the lamp, and thus achieving the purpose of open lamp and over-voltage protection/detection.
摘要翻译： 提供了一种灯驱动装置和使用其的照明装置。 提供的灯驱动装置负责驱动灯。 当灯的两个端子中的任何一个打开或灯过电压时，所提供的驱动装置停止驱动灯，从而达到开灯和过电压保护/检测的目的。
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公开(公告)号：US20140145627A1
公开(公告)日：2014-05-29
申请号：US13959762
申请日：2013-08-06
发明人： Kuang-Yu Jung , Chiu-Yuan Lin
IPC分类号： H05B33/08
CPC分类号： H05B33/0851 , H05B33/0818
摘要： A load driving apparatus relating to light-emitting-diodes (LEDs) is provided. In the invention, a compensation voltage on a compensation pin (CMP) of a control chip does not change in response to (or with) the variation (i.e. enabling and disabling) of a pulse-width-modulation (PWM) signal for dimming. In other words, regardless of whether the PWM signal for dimming is enabled or disabled, the compensation voltage on the compensation pin of the control chip maintains unchanged. Therefore, an LED string at the current switching transient does not have the generation of over-shoot current.
摘要翻译： 提供了与发光二极管（LED）相关的负载驱动装置。 在本发明中，控制芯片的补偿引脚（CMP）上的补偿电压不响应于（或使）用于调光的脉宽调制（PWM）信号的变化（即使能和禁用）而改变。 换句话说，无论调光的PWM信号是使能还是禁止，控制芯片的补偿引脚上的补偿电压保持不变。 因此，在目前的开关瞬态下的LED串不会产生过冲电流。
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