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公开(公告)号：US20150091443A1
公开(公告)日：2015-04-02
申请号：US14279325
申请日：2014-05-16
发明人： Zhen-Chun Liu , Chen-Lung Kao
IPC分类号： H05B37/03
CPC分类号： H05B33/0827 , H05B33/0815 , Y02B20/341
摘要： A load driving apparatus including a power conversion circuit, a current balance circuit, a protection unit and a control chip is provided. The power conversion circuit is configured to receive a DC input voltage, and provide a DC output voltage to a plurality of light emitting units in response to a control signal. The current balance circuit has a plurality of switch elements corresponding to the light emitting units, and is configured to balance currents flowing through the light emitting units. The protection unit detects statuses of the switch elements and/or the DC output voltage. The control chip generates the control signal to control operations of the power conversion circuit; and stops generating the control signal and enters into a shutdown status when any one of the switch elements is open-circuit and/or the DC output voltage is over-voltage, thereby protecting the load driving apparatus and/or the switch elements from damaging.
摘要翻译： 提供一种包括电力转换电路，电流平衡电路，保护单元和控制芯片的负载驱动装置。 功率转换电路被配置为接收DC输入电压，并且响应于控制信号向多个发光单元提供DC输出电压。 电流平衡电路具有对应于发光单元的多个开关元件，并且被配置为平衡流过发光单元的电流。 保护单元检测开关元件的状态和/或直流输出电压。 控制芯片产生控制信号以控制功率转换电路的操作; 并且当开关元件中的任何一个开路和/或DC输出电压为过电压时，停止产生控制信号并进入关断状态，由此保护负载驱动装置和/或开关元件免受损坏。
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公开(公告)号：US20160105941A1
公开(公告)日：2016-04-14
申请号：US14809267
申请日：2015-07-26
发明人： Zhen-Chun Liu , Chen-Lung Kao
IPC分类号： H05B37/02
CPC分类号： H05B41/2827
摘要： A load driving apparatus is provided, which includes: a DC high voltage generation circuit, configured to selectively receive one of first and second AC input voltages different to each other, and process the received AC input voltage to obtain and provide a DC high voltage, wherein the DC high voltage obtained by processing either the first or second AC input voltages is substantially or approximately the same; a switching circuit, configured to selectively output the DC high voltage or a ground potential in response to two complementary PWM signals, so as to provide an AC signal; a transformer, having a primary side receiving the AC signal from the switching circuit, and a secondary side providing a driving signal to drive a light-emitting load in response to the AC signal; and a control circuit, configured to generate the two complementary PWM signals to control switching of the switching circuit.
摘要翻译： 提供了一种负载驱动装置，包括：DC高电压产生电路，被配置为选择性地接收彼此不同的第一和第二AC输入电压中的一个，并且处理所接收的AC输入电压以获得并提供DC高电压， 其中通过处理所述第一或第二AC输入电压获得的DC高电压基本上或近似相同; 开关电路，被配置为响应于两个互补的PWM信号选择性地输出所述DC高电压或接地电位，以便提供AC信号; 变压器，其具有从开关电路接收AC信号的初级侧，以及响应于AC信号提供驱动信号来驱动发光负载的次级侧; 以及控制电路，被配置为产生所述两个互补PWM信号以控制所述开关电路的切换。
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公开(公告)号：US09041310B2
公开(公告)日：2015-05-26
申请号：US13945936
申请日：2013-07-19
发明人： Chiu-Yuan Lin , Chien-Pang Hung , Zhen-Chun Liu
CPC分类号： H05B33/0887 , Y02B20/341
摘要： A load driving apparatus related to light emitting diodes (LED) is provided. The load driving apparatus includes a power conversion circuit, a complex function circuit, and a control chip. The power conversion circuit receives a DC input voltage and provides a DC output voltage to at least one LED string in response to a gate pulse-width-modulation (PWM) signal. The complex function circuit is serially connected with the LED string and provides a short-protection mechanism. The control chip is coupled to the power conversion circuit and the complex function circuit. The control chip generates the gate PWM signal to control the operation of the power conversion circuit, and when the LED string is short-circuited, the control chip controls the complex function circuit to activate the short-protection mechanism, so as to protect the load driving apparatus from being damaged.
摘要翻译： 提供了与发光二极管（LED）相关的负载驱动装置。 负载驱动装置包括功率转换电路，复合功能电路和控制芯片。 功率转换电路响应于门脉冲宽度调制（PWM）信号，接收直流输入电压并向至少一个LED串提供直流输出电压。 复合功能电路与LED串串联，提供短路保护机制。 控制芯片耦合到功率转换电路和复合功能电路。 控制芯片产生栅极PWM信号来控制电源转换电路的工作，当LED串短路时，控制芯片控制复合功能电路激活短路保护机制，保护负载 驱动装置受损。
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公开(公告)号：US08970120B2
公开(公告)日：2015-03-03
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，从而实现开路灯和过电压保护/检测的目的。
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公开(公告)号：US20160111064A1
公开(公告)日：2016-04-21
申请号：US14809264
申请日：2015-07-26
发明人： Chen-Lung Kao , Zhen-Chun Liu
CPC分类号： G01J1/44 , G01J1/4204 , G01J2001/4473 , G09F13/00 , G09G3/20 , G09G3/2014 , G09G2320/064 , G09G2330/028 , G09G2360/144
摘要： A load driving apparatus adapted to drive an outdoor display is provided. The load driving apparatus includes a weather sensing circuit and a display driver. The weather sensing circuit is configured to sense a weather condition corresponding to an installation place of the outdoor display, and accordingly provides a sensing voltage signal varied along with the weather condition. The display driver is coupled between the weather sensing circuit and the outdoor display, and is configured to drive the outdoor display for displaying in response to the sensing voltage signal. When the weather condition is a cloudy day, the sensing voltage signal is linearly varied within a predetermined voltage range, and then the display brightness of the outdoor display is linearly varied between a maximum brightness and a minimum brightness.
摘要翻译： 提供适于驱动室外显示器的负载驱动装置。 负载驱动装置包括气象检测电路和显示驱动器。 天气感测电路被配置为感测与室外显示器的安装位置相对应的天气状况，并且因此提供随着天气条件而变化的感测电压信号。 显示驱动器耦合在气象感测电路和室外显示器之间，并且被配置为驱动室外显示器以响应感测电压信号进行显示。 当天气条件是阴天时，感测电压信号在预定电压范围内线性变化，然后室外显示器的显示亮度在最大亮度和最小亮度之间线性变化。
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6.发明申请LIGHT EMITTING DIODE DRIVING APPARATUS CAPABLE OF DETECTING WHETHER CURRENT LEAKAGE PHENOMENON OCCURS ON LED LOAD AND LIGHT EMITTING DIODE DRIVING METHOD THEREOF 审中-公开发光二极管驱动装置，可检测无电流泄漏电压对LED负载和发光二极管的驱动方式公开(公告)号：US20150373807A1
公开(公告)日：2015-12-24
申请号：US14828526
申请日：2015-08-18
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 by means of boost converting or buck-boost converting 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 generates the PWM driving signal and adjusts 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 maximum 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，通过升压转换或升压转换为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。 控制芯片产生PWM驱动信号，并根据反馈电压调整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最大占空比的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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7.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：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：US20160118832A1
公开(公告)日：2016-04-28
申请号：US14818327
申请日：2015-08-05
发明人： Zhen-Chun Liu , Ming-Chi Sun
IPC分类号： H02J7/00
CPC分类号： H02J7/0068
摘要： An apparatus for charging and discharging a battery is provided, in which the apparatus includes a charging unit, a detecting unit and a discharging unit. The charging unit charges the battery in response to a charging voltage coupled to a voltage input terminal of the charging unit. The detecting unit detects a coupled state between the charging voltage and the charging unit, and turns on a discharging path provided by the discharging unit when the charging voltage is moved away from the charging unit, so as to make the battery supply power to a load. The detecting unit turns off the discharging path when the charging voltage is coupled to the charging unit, so that the battery can not supply power to the load.
摘要翻译： 提供了一种用于对电池充电和放电的装置，其中装置包括充电单元，检测单元和放电单元。 充电单元响应于与充电单元的电压输入端子耦合的充电电压而对电池充电。 所述检测单元检测所述充电电压与所述充电单元之间的耦合状态，并且当所述充电电压从所述充电单元移开时，接通由所述放电单元提供的放电路径，以使所述电池供电到负载 。 当充电电压耦合到充电单元时，检测单元关闭放电路径，使得电池不能向负载供电。
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公开(公告)号：US20150237701A1
公开(公告)日：2015-08-20
申请号：US14690486
申请日：2015-04-20
发明人： Chiu-Yuan Lin , Chien-Pang Hung , Zhen-Chun Liu
IPC分类号： H05B33/08
CPC分类号： H05B33/0887 , H05B33/0818 , H05B33/083 , Y02B20/341
摘要： A load driving apparatus related to light-emitting-diodes (LEDs) is provided. The load driving apparatus includes a power conversion circuit, a current detection circuit, and a control chip. The power conversion circuit receives a DC input voltage and provides a DC output voltage to at least one LED string in response to a gate pulse-width-modulation (PWM) signal. The current detection circuit is serially connected with the LED string and provides a feedback voltage related to a current flowing through the LED string. The control chip generates the gate PWM signal to control the operation of the power conversion circuit. When the LED string is short-circuited, the control chip is shut down in response to the feedback voltage from the current detection circuit, so as to stop generating the gate PWM signal and thus protect the load driving apparatus from being damaged.
摘要翻译： 提供了与发光二极管（LED）相关的负载驱动装置。 负载驱动装置包括功率转换电路，电流检测电路和控制芯片。 功率转换电路响应于门脉冲宽度调制（PWM）信号，接收直流输入电压并向至少一个LED串提供直流输出电压。 电流检测电路与LED串串联并提供与流过LED串的电流相关的反馈电压。 控制芯片产生栅极PWM信号以控制功率转换电路的操作。 当LED串短路时，响应于来自电流检测电路的反馈电压而关闭控制芯片，从而停止产生栅极PWM信号，从而保护负载驱动装置免受损坏。
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