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1.发明申请LED DRIVER CIRCUIT WITH OPEN LOAD DETECTION AND ASSOCIATED CONTROL METHOD 有权具有开路负载检测和相关控制方法的LED驱动电路公开(公告)号：US20110204823A1
公开(公告)日：2011-08-25
申请号：US13031836
申请日：2011-02-22
IPC分类号： H05B41/285
CPC分类号： H05B33/089 , H05B33/0815 , Y02B20/347
摘要： An LED driver circuit prevents an increase in output voltage of a DC/DC converter in an open circuit condition associated with removal or failure of an LED lighting device. A DC power source provides a first DC voltage across positive and negative voltage rails. A DC/DC converter includes a switching element which when turned ON/OFF provides a second DC voltage across first and second ends of a capacitor which further define first and second LED lighting device connection terminals. A control circuit, upon receiving a drive power signal, turns ON/OFF the switching element to provide constant current control. A power supply circuit is coupled between the second LED lighting device connection terminal and the negative voltage rail and generates the drive power signal to the control circuit during a detected lighting condition. The power supply circuit further disables the drive power signal during a detected open circuit condition.
摘要翻译： LED驱动器电路防止在与LED照明装置的去除或故障相关的开路状态下DC / DC转换器的输出电压增加。 直流电源在正负电压轨上提供第一直流电压。 DC / DC转换器包括开关元件，其在接通/断开时提供跨越电容器的第一和第二端的第二DC电压，其进一步限定第一和第二LED照明器件连接端子。 控制电路在接收到驱动功率信号时，将开关元件接通/断开，以提供恒定的电流控制。 电源电路耦合在第二LED照明装置连接端子和负电压轨道之间，并且在检测到的照明条件期间产生到控制电路的驱动电力信号。 在检测到的开路状态期间，电源电路进一步禁止驱动电力信号。
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2.发明授权公开(公告)号：US08502463B2
公开(公告)日：2013-08-06
申请号：US13031836
申请日：2011-02-22
IPC分类号： H05B39/02
CPC分类号： H05B33/089 , H05B33/0815 , Y02B20/347
摘要： An LED driver circuit prevents an increase in output voltage of a DC/DC converter in an open circuit condition associated with removal or failure of an LED lighting device. A DC power source provides a first DC voltage across positive and negative voltage rails. A DC/DC converter includes a switching element which when turned ON/OFF provides a second DC voltage across first and second ends of a capacitor which further define first and second LED lighting device connection terminals. A control circuit, upon receiving a drive power signal, turns ON/OFF the switching element to provide constant current control. A power supply circuit is coupled between the second LED lighting device connection terminal and the negative voltage rail and generates the drive power signal to the control circuit during a detected lighting condition. The power supply circuit further disables the drive power signal during a detected open circuit condition.
摘要翻译： LED驱动器电路防止在与LED照明装置的去除或故障相关的开路状态下DC / DC转换器的输出电压增加。 直流电源在正负电压轨上提供第一直流电压。 DC / DC转换器包括开关元件，其在接通/断开时提供跨越电容器的第一和第二端的第二DC电压，其进一步限定第一和第二LED照明器件连接端子。 控制电路在接收到驱动功率信号时，将开关元件接通/断开，以提供恒定的电流控制。 电源电路耦合在第二LED照明装置连接端子和负电压轨道之间，并且在检测到的照明条件期间产生到控制电路的驱动电力信号。 在检测到的开路状态期间，电源电路进一步禁止驱动电力信号。
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公开(公告)号：US08390213B2
公开(公告)日：2013-03-05
申请号：US12697187
申请日：2010-01-29
IPC分类号： H05B37/02
CPC分类号： H05B33/0815 , H05B33/0809 , Y02B20/346 , Y02B20/348
摘要： An LED power-source circuit includes an input filter circuit including noise prevention capacitors and a line filter, a diode bridge connected to the input filter circuit, a smoothing capacitor connected to an output of the diode bridge and having a capacitance of 1 μF or less, a DC-DC conversion circuit connected to the smoothing capacitor, and an LED assembly connected to an output of the DC-DC conversion circuit. Grounding capacitors are coupled to ground from an input power line between the line filter and the diode bridge. The total capacitance from the input power line to ground is set to be 1/200 or less of that of the smoothing capacitor.
摘要翻译： LED电源电路包括具有防噪电容器和线路滤波器的输入滤波器电路，连接到输入滤波器电路的二极管电桥，连接到二极管桥的输出并具有1μF以下电容的平滑电容器 连接到平滑电容器的DC-DC转换电路和连接到DC-DC转换电路的输出的LED组件。 接地电容器从线路滤波器和二极管桥之间的输入电源线耦合到地。 从输入电源线到地线的总电容设置为平滑电容器的总电容的1/200以下。
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公开(公告)号：US20100231138A1
公开(公告)日：2010-09-16
申请号：US12697187
申请日：2010-01-29
IPC分类号： H05B41/36
CPC分类号： H05B33/0815 , H05B33/0809 , Y02B20/346 , Y02B20/348
摘要： An LED power-source circuit includes an input filter circuit including noise prevention capacitors and a line filter, a diode bridge connected to the input filter circuit, a smoothing capacitor connected to an output of the diode bridge and having a capacitance of 1 μF or less, a DC-DC conversion circuit connected to the smoothing capacitor, and an LED assembly connected to an output of the DC-DC conversion circuit. Grounding capacitors are coupled to ground from an input power line between the line filter and the diode bridge. The total capacitance from the input power line to ground is set to be 1/200 or less of that of the smoothing capacitor.
摘要翻译： LED电源电路包括具有防噪电容器和线路滤波器的输入滤波器电路，连接到输入滤波器电路的二极管电桥，连接到二极管桥的输出并具有1μF以下电容的平滑电容器 连接到平滑电容器的DC-DC转换电路和连接到DC-DC转换电路的输出的LED组件。 接地电容器从线路滤波器和二极管桥之间的输入电源线耦合到地。 从输入电源线到地线的总电容设置为平滑电容器的总电容的1/200以下。
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公开(公告)号：US08482222B2
公开(公告)日：2013-07-09
申请号：US13083170
申请日：2011-04-08
CPC分类号： H02M1/36 , H02M3/156 , H05B33/0815 , H05B33/0821 , H05B33/0887
摘要： A lighting device reliably detects a status (i.e., existence or absence) of a load connection, and enables or disables power output based on the detected load connection status. The device includes a DC-DC converter having input and output terminals, and a DC current conducting element coupled across the output terminals. A load terminal is also coupled across the output terminals and configured to receive an LED unit. A load detection circuit coupled between an input terminal and the load terminal detects the connection status of an LED unit via a DC current passing through the load terminal, and controls a switching operation of the DC-DC converter based on the detected connection status. A diode coupled between the load terminal and the DC current conducting element blocks a DC current path from the input terminals to the load detection circuit through the DC current conducting element.
摘要翻译： 照明装置可靠地检测负载连接的状态（即，是否存在），并且基于检测到的负载连接状态来启用或禁用电力输出。 该装置包括具有输入和输出端子的DC-DC转换器和耦合在输出端子两端的直流电流传导元件。 负载端子也耦合在输出端子之间并被配置为接收LED单元。 耦合在输入端子和负载端子之间的负载检测电路经由穿过负载端子的直流电流来检测LED单元的连接状态，并且基于检测到的连接状态来控制DC-DC转换器的切换操作。 耦合在负载端子和直流导电元件之间的二极管通过直流电导体元件阻挡从输入端子到负载检测电路的直流电流路径。
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公开(公告)号：US20110248647A1
公开(公告)日：2011-10-13
申请号：US13083170
申请日：2011-04-08
IPC分类号： H05B37/02
CPC分类号： H02M1/36 , H02M3/156 , H05B33/0815 , H05B33/0821 , H05B33/0887
摘要： A lighting device reliably detects a status (i.e., existence or absence) of a load connection, and enables or disables power output based on the detected load connection status. The device includes a DC-DC converter having input and output terminals, and a DC current conducting element coupled across the output terminals. A load terminal is also coupled across the output terminals and configured to receive an LED unit. A load detection circuit coupled between an input terminal and the load terminal detects the connection status of an LED unit via a DC current passing through the load terminal, and controls a switching operation of the DC-DC converter based on the detected connection status. A diode coupled between the load terminal and the DC current conducting element blocks a DC current path from the input terminals to the load detection circuit through the DC current conducting element.
摘要翻译： 照明装置可靠地检测负载连接的状态（即，是否存在），并且基于检测到的负载连接状态来启用或禁用电力输出。 该装置包括具有输入和输出端子的DC-DC转换器和耦合在输出端子两端的直流电流传导元件。 负载端子也耦合在输出端子之间并被配置为接收LED单元。 耦合在输入端子和负载端子之间的负载检测电路经由穿过负载端子的直流电流来检测LED单元的连接状态，并且基于检测到的连接状态来控制DC-DC转换器的切换操作。 耦合在负载端子和直流导电元件之间的二极管通过直流电导体元件阻挡从输入端子到负载检测电路的直流电流路径。
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7.发明申请LIGHTING DEVICE FOR SOLID-STATE LIGHT SOURCE AND ILLUMINATION APPARATUS USING SAME 有权用于固态光源的照明装置和使用其的照明装置公开(公告)号：US20120286686A1
公开(公告)日：2012-11-15
申请号：US13456343
申请日：2012-04-26
申请人： Koji WATANABE , Hiromitsu Mizukawa
发明人： Koji WATANABE , Hiromitsu Mizukawa
IPC分类号： H05B37/02
CPC分类号： H05B33/0818 , H05B33/0815 , H05B33/0848
摘要： A lighting device for lighting a solid-state light source includes: a DC power circuit unit for converting a power of an input DC power source using a switching element and flowing a current through a solid-state light source; and a control unit for performing a first switching control in which the switching element is turned on/off at a first high frequency and a second switching control in which an ON/OFF operation of the switching element is intermittently stopped at a second frequency lower than the first frequency of the first switching control. When the current flowing through the solid-state light source is changed, the second frequency is varied.
摘要翻译： 一种用于点亮固态光源的照明装置包括：直流电源电路单元，用于使用开关元件转换输入直流电源的电力并使电流流过固态光源; 以及控制单元，用于执行其中开关元件以第一高频接通/断开的第一开关控制;以及第二开关控制，其中开关元件的接通/断开操作以低于 第一个开关控制的第一个频率。 当流过固态光源的电流改变时，第二频率变化。
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公开(公告)号：US5942859A
公开(公告)日：1999-08-24
申请号：US865561
申请日：1997-05-29
申请人： Akio Okude , Kouji Noro , Hiromitsu Mizukawa , Jun Kumagai
发明人： Akio Okude , Kouji Noro , Hiromitsu Mizukawa , Jun Kumagai
IPC分类号： H05B41/285 , H05B41/36 , H05B37/02
CPC分类号： H05B41/36 , H05B41/2855
摘要： A discharge lamp lighting device include an inverter circuit section supplying a square wave AC power from a DC power source to a discharge lamp, and a high voltage pulse generating unit applying, upon starting, a high voltage pulse to the discharge lamp to have it started, with an arrangement for lighting the discharge lamp by the square wave AC power made to be lower in the square wave frequency upon non-loading than that upon lighting, and controlling the square wave frequency to remain as that upon the non-loading for a fixed period immediately after detection of the start of discharge of the lamp.
摘要翻译： 放电灯点亮装置包括从直流电源向放电灯提供方波交流电力的逆变器电路部，以及高压脉冲发生部，其在启动时向放电灯施加高电压脉冲使其起动 具有通过与非点亮时不同的矩形波频率的方波交流电源照明放电灯的布置，并且控制方波频率保持为不加载时的方波频率 在检测到灯的放电开始后立即固定的时间段。
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9.发明授权公开(公告)号：US09089020B2
公开(公告)日：2015-07-21
申请号：US13459493
申请日：2012-04-30
申请人： Koji Watanabe , Hiromitsu Mizukawa
发明人： Koji Watanabe , Hiromitsu Mizukawa
IPC分类号： H05B33/08
CPC分类号： H05B33/0815 , H05B33/0845
摘要： A dimming signal generation device outputs a square wave voltage signal having an on-duty corresponding to a dimming level to a dimming signal line from a time point when a predetermined time period has elapsed after power-up. In the dimming signal generation device, a specific voltage is outputted to the dimming signal line for the predetermined time period after the power-up.
摘要翻译： 调光信号发生装置从上电开始经过规定时间后的时间点向调光信号线输出具有与调光电平相对应的导通占空比的方波电压信号。 在调光信号发生装置中，在上电之后的预定时间段内，将特定电压输出到调光信号线。
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10.发明授权Lighting device for solid-state light source and illumination apparatus including same 有权用于固态光源的照明装置和包括其的照明装置公开(公告)号：US08872444B2
公开(公告)日：2014-10-28
申请号：US13446257
申请日：2012-04-13
CPC分类号： H05B33/0815 , Y02B20/347
摘要： A lighting device for a solid-state light source includes a DC power source circuit section which flows a current in a solid-state light source by using a charging/discharging current or either one of charging and discharging currents of a inductor connected in series to a switching element, and a current control section having a first switching control unit for changing an ON width of the switching element depending on a dimming level and a second switching control unit for controlling an ON timing of the switching element. The second switching control unit changes a time until the switching element is turned on from a zero-crossing of the discharging current of the inductor such that the time becomes substantially the same when the dimming level is equal to or greater than a predetermined level, and the time becomes longer when the dimming level is less than the predetermined level.
摘要翻译： 用于固态光源的照明装置包括直流电源电路部分，其通过使用充电/放电电流或串联连接的电感器的充电和放电电流中的任一个流过固态光源中的电流 开关元件和电流控制部分，具有用于根据调光电平改变开关元件的导通宽度的第一开关控制单元和用于控制开关元件的导通定时的第二开关控制单元。 第二开关控制单元从电感器的放电电流的过零点改变直到开关元件接通的时间，使得当调光水平等于或大于预定水平时，时间变得基本相同，以及 当调光水平小于预定水平时，时间变长。
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