公开(公告)号：US08508145B2

公开(公告)日：2013-08-13

申请号：US13396609

申请日：2012-02-15

申请人： Chung-Che Yu ,  Shih-Chung Huang ,  Chien-Pang Hung ,  Chih-Shun Lee

发明人： Chung-Che Yu ,  Shih-Chung Huang ,  Chien-Pang Hung ,  Chih-Shun Lee

IPC分类号： H05B37/02

CPC分类号： H02M7/53871 ,  H05B41/2825 ,  H05B41/2828 ,  Y02B20/186 ,  Y02B70/1441

摘要： A fluorescent lamp device includes a frequency generator for generating a pulse signal, a driver circuit coupled to said frequency generator for generating at least one driving signal according to said pulse signal, a half bridge power switch unit coupled to the driver circuit, a resonant tank coupled to the half bridge power switch unit, and a fluorescent lamp coupled to the resonant tank.

摘要翻译： 荧光灯装置包括用于产生脉冲信号的频率发生器，耦合到所述频率发生器的驱动电路，用于根据所述脉冲信号产生至少一个驱动信号;耦合到驱动电路的半桥功率开关单元，谐振槽 耦合到半桥功率开关单元，以及耦合到谐振槽的荧光灯。

公开(公告)号：US08384297B2

公开(公告)日：2013-02-26

申请号：US12858662

申请日：2010-08-18

申请人： Jonathan Robert Quayle ,  Venkatesh Chitta

发明人： Jonathan Robert Quayle ,  Venkatesh Chitta

IPC分类号： H05B41/36

CPC分类号： H05B41/295 ,  H05B41/2825 ,  H05B41/3925 ,  H05B41/3927

摘要： An electronic ballast for driving a gas discharge lamp comprises an inverter circuit, a resonant tank circuit, and a control circuit operable to determine an approximation of a resonant frequency of the resonant tank circuit and to control the inverter circuit in response to the approximation of the resonant frequency. The control circuit determines the approximation of the resonant frequency by adjusting an operating frequency of a high-frequency inverter output voltage provided to the resonant tank circuit from a frequency above the resonant frequency down towards the resonant frequency, measuring the magnitude of a lamp voltage across the lamp, and storing the present value of the operating frequency as the resonant frequency when the magnitude of the lamp voltage reaches a maximum value. The control circuit may control the operating frequency of the inverter output voltage in response to the approximation of the resonant frequency and a target intensity of the lamp.

摘要翻译： 用于驱动气体放电灯的电子镇流器包括逆变器电路，谐振回路和控制电路，其可操作以确定谐振回路的谐振频率的近似值，并且响应于近似的 谐振频率。 控制电路通过从谐振频率以上的频率向谐振频率调节提供给谐振回路的高频逆变器输出电压的工作频率，来测定谐振频率的近似值，测量灯电压的幅度 并且当灯电压的大小达到最大值时将工作频率的当前值作为谐振频率存储。 响应于谐振频率和灯的目标强度的近似，控制电路可以控制逆变器输出电压的工作频率。

公开(公告)号：US08063670B2

公开(公告)日：2011-11-22

申请号：US12619198

申请日：2009-11-16

申请人： Sehat Sutardja

发明人： Sehat Sutardja

IPC分类号： H03K3/00

CPC分类号： H03K17/691 ,  H03K17/18 ,  H03K17/6871 ,  H03K17/6877 ,  H05B41/2825 ,  Y10S315/07

摘要： A transistor driver includes a sender module configured to generate a power input signal. A converter module includes a transformer including a first side and a second side. The first side of the transformer is configured to receive the power input signal. A rectifier is connected to the second side of the transformer. The converter module is configured to generate an output signal at an output of the rectifier. A first receiver module is connected to each of the second side of the transformer and the output of the rectifier. The first receiver module is configured to transition a first transistor between an ON state and an OFF state based on a first signal received from the second side of the transformer.

摘要翻译： 晶体管驱动器包括被配置为产生电力输入信号的发送器模块。 A转换器模块包括包括第一侧和第二侧的变压器。 变压器的第一侧配置为接收电源输入信号。 整流器连接到变压器的第二侧。 转换器模块被配置为在整流器的输出处产生输出信号。 第一接收器模块连接到变压器的第二侧和整流器的输出端。 第一接收器模块被配置为基于从变压器的第二侧接收的第一信号而在导通状态和断开状态之间转换第一晶体管。

公开(公告)号：US07746002B2

公开(公告)日：2010-06-29

申请号：US10597310

申请日：2005-01-19

申请人： Johannes Maria Van Meurs ,  Dorota Barbara Pawelek

发明人： Johannes Maria Van Meurs ,  Dorota Barbara Pawelek

IPC分类号： H05B37/02

CPC分类号： H05B41/2825

摘要： A high frequency driver for a gas discharge lamp is supplied with a DC voltage. The driver converts the input DC voltage to an AC voltage and supplies the AC voltage to a load, which comprises a gas discharge lamp, an inductor connected in series with the lamp and a capacitor connected in parallel to the lamp. The AC voltage has a first high frequency during ignition of the lamp and a second high frequency during normal operation of the lamp after its ignition. The first frequency is higher than the second frequency by a ratio of at least 2.2. By modulating the frequency of the AC voltage the ratio can be increased while still complying with EMI and RFI requirements.

摘要翻译： 用于气体放电灯的高频驱动器被提供有直流电压。 驱动器将输入直流电压转换为交流电压，并将交流电压提供给负载，该负载包括气体放电灯，与灯串联的电感器和与灯并联连接的电容器。 在灯点火期间，AC电压具有第一高频，并且在其点火之后在灯的正常操作期间具有第二高频。 第一频率比第二频率高至少2.2的比率。 通过调制交流电压的频率可以提高比率，同时仍然符合EMI和RFI要求。

公开(公告)号：US20100060327A1

公开(公告)日：2010-03-11

申请号：US12619198

申请日：2009-11-16

申请人： Sehat Sutardja

发明人： Sehat Sutardja

IPC分类号： H03K3/00 ,  H05B41/36

CPC分类号： H03K17/691 ,  H03K17/18 ,  H03K17/6871 ,  H03K17/6877 ,  H05B41/2825 ,  Y10S315/07

摘要： A transistor driver includes a sender module configured to generate a power input signal. A converter module includes a transformer including a first side and a second side. The first side of the transformer is configured to receive the power input signal. A rectifier is connected to the second side of the transformer. The converter module is configured to generate an output signal at an output of the rectifier. A first receiver module is connected to each of the second side of the transformer and the output of the rectifier. The first receiver module is configured to transition a first transistor between an ON state and an OFF state based on a first signal received from the second side of the transformer.

摘要翻译： 晶体管驱动器包括被配置为产生电力输入信号的发送器模块。 A转换器模块包括包括第一侧和第二侧的变压器。 变压器的第一侧配置为接收电源输入信号。 整流器连接到变压器的第二侧。 转换器模块被配置为在整流器的输出处产生输出信号。 第一接收器模块连接到变压器的第二侧和整流器的输出端。 第一接收器模块被配置为基于从变压器的第二侧接收的第一信号而在导通状态和断开状态之间转换第一晶体管。

公开(公告)号：US07615934B2

公开(公告)日：2009-11-10

申请号：US11608088

申请日：2006-12-07

申请人： Ta-yung Yang

发明人： Ta-yung Yang

IPC分类号： H05B37/02

CPC分类号： H05B41/2856 ,  H05B41/2825 ,  H05B41/2828 ,  Y10S315/05

摘要： The present invention provides a low-cost ballast circuit for fluorescent lamps. A resonant circuit has a transformer to operate the fluorescent lamp. The fluorescent lamp is connected in series with a first winding of the transformer. A first transistor and a second transistor are coupled to switch the resonant circuit. A second winding and a third winding of the transformer are used for generating control signals in response to a switching current of the resonant circuit. Furthermore, the present invention achieves soft operation for the first transistor and the second transistor.

摘要翻译： 本发明提供一种用于荧光灯的低成本镇流器电路。 谐振电路具有用于操作荧光灯的变压器。 荧光灯与变压器的第一绕组串联连接。 耦合第一晶体管和第二晶体管以切换谐振电路。 变压器的第二绕组和第三绕组用于响应谐振电路的开关电流产生控制信号。 此外，本发明实现了第一晶体管和第二晶体管的软操作。

公开(公告)号：US20090273953A1

公开(公告)日：2009-11-05

申请号：US12387499

申请日：2009-05-04

申请人： Li-Jun Zhao ,  Tong Zhou

发明人： Li-Jun Zhao ,  Tong Zhou

IPC分类号： H02M7/5375

CPC分类号： H05B41/2825 ,  G09G3/3406

摘要： An inverter includes a pulse width modulation (PWM) circuit, a direct current (DC) voltage input terminal, a storage capacitor, a first transformer, a soft start circuit, and a first transistor. The PWM circuit includes a first output terminal. The first transformer includes a first primary winding. The first primary winding includes a first terminal and a second terminal capable of being grounded via the storage capacitor. The soft start circuit includes an inductor and a first capacitor. A gate electrode of the first transistor is connected to the first output terminal. A source electrode of the first transistor is connected to the first terminal of the first transformer via the inductor. A drain electrode of the first transistor is connected to the DC voltage input terminal and connected to the source electrode via the capacitor.

摘要翻译： 逆变器包括脉冲宽度调制（PWM）电路，直流（DC）电压输入端子，存储电容器，第一变压器，软启动电路和第一晶体管。 PWM电路包括第一输出端子。 第一变压器包括第一初级绕组。 第一初级绕组包括能够经由存储电容器接地的第一端子和第二端子。 软启动电路包括电感器和第一电容器。 第一晶体管的栅电极连接到第一输出端。 第一晶体管的源电极通过电感器连接到第一变压器的第一端子。 第一晶体管的漏电极连接到直流电压输入端子，并通过电容器连接到源电极。

公开(公告)号：US20090224692A1

公开(公告)日：2009-09-10

申请号：US12398030

申请日：2009-03-04

申请人： Dong-Hun Lee ,  Jae-Soon Choi

发明人： Dong-Hun Lee ,  Jae-Soon Choi

IPC分类号： H05B37/02

CPC分类号： H05B41/2825

摘要： An inverter driver controls an inverter that supplies driving voltages to a plurality of discharge lamps. The inverter driver includes a first amplifier having an output terminal, a second amplifier having an output terminal connected to the output terminal of the first amplifier, and a capacitor connected between the output terminal and a ground source. The first amplifier outputs only a negative current corresponding to the maximum value among the driving voltages supplied to the plurality of discharge lamps, and the second amplifier outputs a current corresponding to the maximum value among the driving currents flowing through the plurality of discharge lamps. Such inverter driver controls the inverter according to a voltage of the capacitor.

摘要翻译： 逆变器驱动器控制向多个放电灯提供驱动电压的逆变器。 逆变器驱动器包括具有输出端的第一放大器，具有连接到第一放大器的输出端的输出端的第二放大器和连接在输出端和地源之间的电容器。 第一放大器仅输出与提供给多个放电灯的驱动电压中的最大值对应的负电流，并且第二放大器输出对应于流过多个放电灯的驱动电流中的最大值的电流。 这种逆变器驱动器根据电容器的电压来控制逆变器。

公开(公告)号：US07541749B2

公开(公告)日：2009-06-02

申请号：US11329068

申请日：2006-01-11

申请人： Masakazu Ushijima

发明人： Masakazu Ushijima

IPC分类号： H05B37/02

CPC分类号： H05B41/282 ,  H02M7/53832 ,  H05B41/2825 ,  Y02B20/183 ,  Y02B20/185 ,  Y02B70/1441

摘要： A highly stable current-mode resonant inverter circuit operates by detecting resonance current in the secondary side circuit. The inverter circuit comprises a step-up transformer with a secondary winding connected to a secondary side circuit with a capacitive component. The leakage inductance and the secondary winding and the capacitive component compose a series resonant circuit. The inverter circuit is configured to detect a current flowing through the secondary winding or capacitive component in the secondary side circuit, and determine a switching timing in response to the detected current. The determined switching timing allows the inverter circuit to oscillate self-excitedly at a resonance frequency of the series resonant circuit.

摘要翻译： 通过检测次级侧电路中的谐振电流来操作高度稳定的电流模式谐振逆变器电路。 逆变器电路包括升压变压器，其次级绕组连接到具有电容部件的次级侧电路。 漏电感和次级绕组和电容元件构成串联谐振电路。 逆变器电路被配置为检测流过次级侧电路中的次级绕组或电容分量的电流，并且响应于检测到的电流来确定切换定时。 所确定的开关时序允许逆变器电路以串联谐振电路的谐振频率自激振荡。

公开(公告)号：US07474064B2

公开(公告)日：2009-01-06

申请号：US11832644

申请日：2007-08-01

申请人： Ting-Cheng Lai ,  Masakazu Ushijima

发明人： Ting-Cheng Lai ,  Masakazu Ushijima

IPC分类号： G05F1/00

CPC分类号： H05B41/2825 ,  H05B41/392 ,  Y10S315/07

摘要： A lamp driving circuit includes a step-up transformer, a detector, and a controller. The step-up transformer includes a primary winding, and a secondary winding configured to cooperate with a discharge lamp to form a tank circuit that generates a tank current. The detector is adapted for detecting current magnitude of current flowing through the discharge lamp, and outputs a detecting signal corresponding to the current magnitude. The controller receives the detecting signal from the detector, and generates a drive signal for driving the step-up transformer. The controller includes a capacitor, and configures a waveform of the drive signal by controlling charging of the capacitor based on a calculation value that corresponds to a frequency of the drive signal, a start-setting value, and a difference between the detecting signal and a current-setting signal.

摘要翻译： 灯驱动电路包括升压变压器，检测器和控制器。 升压变压器包括初级绕组和次级绕组，其被配置为与放电灯协作以形成产生罐电流的储能电路。 检测器适用于检测流过放电灯的电流的电流大小，并输出对应于电流大小的检测信号。 控制器从检测器接收检测信号，并产生用于驱动升压变压器的驱动信号。 控制器包括电容器，并且通过基于与驱动信号的频率对应的计算值，开始设定值以及检测信号与a的值之间的差来控制电容器的充电来配置驱动信号的波形 电流设定信号。