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1.再颁专利Phase shift modulation-based control of amplitude of AC voltage output produced by double-ended DC-AC converter circuitry for powering high voltage load such as cold cathode fluorescent lamp 失效由双端直流 - 交流转换器电路产生的交流电压输出振幅的相移调制控制，为高压负载供电，如冷阴极荧光灯公开(公告)号：USRE43808E1
公开(公告)日：2012-11-20
申请号：US12547882
申请日：2009-08-26
IPC分类号： H05B41/16
CPC分类号： H05B41/2824 , H05B41/3927
摘要： A double-ended, DC-AC converter supplies AC power to a load, such as a cold cathode fluorescent lamp used to back-light a liquid crystal display. First and second converter stages generate respective first and second sinusoidal voltages having the same frequency and amplitude, but having a controlled phase difference therebetween. By employing a voltage controlled delay circuit to control the phase difference between the first and second sinusoidal voltages, the converter is able to vary the amplitude of the composite voltage differential produced across the opposite ends of the load. The converter may be either voltage fed or current fed.
摘要翻译： 双端DC-AC转换器为负载提供交流电源，例如用于背光液晶显示器的冷阴极荧光灯。 第一和第二转换器级产生具有相同频率和幅度的相应的第一和第二正弦电压，但是它们之间具有受控的相位差。 通过采用电压控制延迟电路来控制第一和第二正弦电压之间的相位差，转换器能够改变在负载的相对端产生的复合电压差的振幅。 转换器可以是电压馈送或电流馈送。
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2.发明授权DC-AC converter having phase-modulated, double-ended, full-bridge topology for powering high voltage load such as cold cathode fluorescent lamp 失效DC-AC转换器具有用于为诸如冷阴极荧光灯等高压负载供电的相位调制双端全桥拓扑公开(公告)号：US07564193B2
公开(公告)日：2009-07-21
申请号：US11175488
申请日：2005-07-06
IPC分类号： H05B41/24
CPC分类号： H05B41/2828 , H05B41/3927
摘要： A phase-modulated, double-ended, full-bridge topology-based DC-AC converter supplies AC power to a load, such as a cold cathode fluorescent lamp used to back-light a liquid crystal display. First and second converter stages generate respective first and second sinusoidal voltages having the same frequency and amplitude, but having a controlled phase difference therebetween. By employing a voltage controlled delay circuit to control the phase difference between the first and second sinusoidal voltages, the converter is able to vary the amplitude of the composite voltage differential produced across the opposite ends of the load.
摘要翻译： 一个基于相位调制，双端，全桥拓扑的DC-AC转换器为负载供电，如用于背光液晶显示器的冷阴极荧光灯。 第一和第二转换器级产生具有相同频率和幅度的相应的第一和第二正弦电压，但是它们之间具有受控的相位差。 通过采用电压控制延迟电路来控制第一和第二正弦电压之间的相位差，转换器能够改变在负载的相对端产生的复合电压差的振幅。
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3.发明授权Controller and driver architecture for double-ended circuitry for powering cold cathode fluorescent lamps 失效用于为冷阴极荧光灯供电的双端电路的控制器和驱动器架构公开(公告)号：US07075247B2
公开(公告)日：2006-07-11
申请号：US10927756
申请日：2004-08-27
CPC分类号： H05B41/282
摘要： A distributed controller and DC voltage switch-driver system supplies AC power to a cold cathode fluorescent lamp of the type used to backlight a liquid crystal display. The system includes a local controller and lamp operation-monitoring subsystem, which generates two pairs of low voltage drive signals. These drive signals are distributed over low voltage wires to respective pairs of step-up transformer-driving switches installed at opposite ends of the lamp. The high voltage AC outputs of the two transformers have the same frequency, but opposite phase, to reduce the voltage ratings of the components that are installed at the opposite ends of the lamp. The use of low voltage connections from the local controller to driver circuitry at the far end of the lamp serves to reduce the cost of the components, and results in lower emitted noise and lower energy lost to capacitive coupling.
摘要翻译： 分布式控制器和直流电压开关驱动器系统为用于背光液晶显示器的冷阴极荧光灯提供交流电源。 该系统包括本地控制器和灯操作监控子系统，其产生两对低压驱动信号。 这些驱动信号通过低压电线分布到安装在灯的相对端的各对升压变压器驱动开关。 两个变压器的高压交流输出具有相同的频率，但相反的相位，以降低安装在灯的两端的部件的额定电压。 使用从本地控制器到灯的远端的驱动器电路的低压连接用于降低部件的成本，并且导致较低的发射噪声，并降低电容耦合损耗的能量。
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4.发明授权DC-AC converter having phase-modulated, double-ended, half-bridge topology for powering high voltage load such as cold cathode fluorescent lamp 失效DC-AC转换器具有用于为诸如冷阴极荧光灯等高压负载供电的相位调制双端半桥拓扑公开(公告)号：US07560872B2
公开(公告)日：2009-07-14
申请号：US11175486
申请日：2005-07-06
CPC分类号： H05B41/3927 , H05B41/2828
摘要： A phase-modulated, double-ended, half-bridge topology-based DC-AC converter supplies AC power to a load, such as a cold cathode fluorescent lamp used to back-light a liquid crystal display. First and second converter stages generate respective first and second sinusoidal voltages having the same frequency and amplitude, but having a controlled phase difference therebetween. By employing a voltage controlled delay circuit to control the phase difference between the first and second sinusoidal voltages, the converter is able to vary the amplitude of the composite voltage differential produced across the opposite ends of the load.
摘要翻译： 一个基于相位调制，双端，半桥拓扑的DC-AC转换器为负载供电，如用于背光液晶显示器的冷阴极荧光灯。 第一和第二转换器级产生具有相同频率和幅度的相应的第一和第二正弦电压，但是它们之间具有受控的相位差。 通过采用电压控制延迟电路来控制第一和第二正弦电压之间的相位差，转换器能够改变在负载的相对端产生的复合电压差的振幅。
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5.发明授权Phase shift modulation-based control of amplitude of AC voltage output produced by double-ended DC-AC converter circuitry for powering high voltage load such as cold cathode fluorescent lamp 失效由双端直流 - 交流转换器电路产生的交流电压输出振幅的相移调制控制，为高压负载供电，如冷阴极荧光灯公开(公告)号：US07368880B2
公开(公告)日：2008-05-06
申请号：US11046976
申请日：2005-01-31
IPC分类号： H05B41/16
CPC分类号： H05B41/2824 , H05B41/3927
摘要： A double-ended, DC-AC converter supplies AC power to a load, such as a cold cathode fluorescent lamp used to back-light a liquid crystal display. First and second converter stages generate respective first and second sinusoidal voltages having the same frequency and amplitude, but having a controlled phase difference therebetween. By employing a voltage controlled delay circuit to control the phase difference between the first and second sinusoidal voltages, the converter is able to vary the amplitude of the composite voltage differential produced across the opposite ends of the load. The converter may be either voltage fed or current fed.
摘要翻译： 双端DC-AC转换器为负载提供交流电源，例如用于背光液晶显示器的冷阴极荧光灯。 第一和第二转换器级产生具有相同频率和幅度的相应的第一和第二正弦电压，但是它们之间具有受控的相位差。 通过采用电压控制延迟电路来控制第一和第二正弦电压之间的相位差，转换器能够改变在负载的相对端产生的复合电压差的振幅。 转换器可以是电压馈送或电流馈送。
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6.发明授权System and method of maintaining gain linearity of variable frequency modulator 有权保持可变频率调制器增益线性的系统和方法公开(公告)号：US08786377B2
公开(公告)日：2014-07-22
申请号：US13537708
申请日：2012-06-29
IPC分类号： H03K7/08 , H03K7/06 , H03K7/10 , H03K3/0231 , H02M3/156
CPC分类号： H03K7/08 , H02M3/156 , H02M3/1563 , H03K3/0231 , H03K7/06 , H03K7/10
摘要： A variable frequency modulator including a compensation network, first and second pulse control networks and a linearity controller. The compensation network is configured to provide a compensation signal indicative of an output load condition. The first pulse control network is configured to initiate pulses on a pulse control signal and to adjust operating frequency based on changes of the compensation signal. The second pulse control network is configured to terminate the pulses on the pulse control signal based on a predetermined timing parameter. The linearity controller is configured to adjust timing of terminating the pulses based on a predetermined steady state operating frequency and an actual operating frequency to maintain modulator gain at a constant level.
摘要翻译： 一种包括补偿网络，第一和第二脉冲控制网络和线性控制器的可变频率调制器。 补偿网络被配置为提供表示输出负载条件的补偿信号。 第一脉冲控制网络被配置为在脉冲控制信号上启动脉冲，并且基于补偿信号的变化来调整工作频率。 第二脉冲控制网络被配置为基于预定的定时参数终止脉冲控制信号上的脉冲。 线性控制器被配置为基于预定的稳态工作频率和实际工作频率来调整终止脉冲的定时，以将调制器增益维持在恒定水平。
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7.发明申请SYSTEM AND METHOD OF BALANCED SLOPE COMPENSATION FOR SWITCH MODE REGULATORS 有权用于开关模式调节器的平衡斜率补偿系统和方法公开(公告)号：US20130293212A1
公开(公告)日：2013-11-07
申请号：US13536831
申请日：2012-06-28
IPC分类号： G05F1/46
CPC分类号： H02M3/157 , H02M2001/0025
摘要： A modulator with balanced slope compensation including a control network, a slope compensation network, an offset network and an adjust network. The control network receives a feedback signal indicative of an output voltage and provides a loop control signal. The slope compensation network develops a slope compensation signal. The offset network determines a DC offset of the slope compensation signal. The adjust network combines the DC offset, the slope compensation signal and the loop control signal to provide a balanced slope compensated control signal. The DC offset may be determined as a peak of the slope compensation signal. The slope compensation signal may be developed based on the output voltage and a pulse control signal, in which the pulse control signal is developed using the balanced slope compensated control signal.
摘要翻译： 具有平衡斜率补偿的调制器，包括控制网络，斜率补偿网络，偏移网络和调整网络。 控制网络接收表示输出电压的反馈信号并提供回路控制信号。 坡度补偿网络产生斜率补偿信号。 偏移网络确定斜率补偿信号的直流偏移。 调整网络组合了直流偏移，斜率补偿信号和回路控制信号，以提供平衡的斜率补偿控制信号。 DC偏移可以被确定为斜率补偿信号的峰值。 可以基于输出电压和脉冲控制信号来开发斜率补偿信号，其中使用平衡斜率补偿控制信号显示脉冲控制信号。
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8.发明授权System and method for determining output voltage level information from phase voltage for switched mode regulator controllers 有权用于从开关模式调节器控制器的相电压确定输出电压电平信息的系统和方法公开(公告)号：US08299764B2
公开(公告)日：2012-10-30
申请号：US12700103
申请日：2010-02-04
IPC分类号： G05F1/613
CPC分类号： H02M3/156 , H02M2001/0022
摘要： A controller integrated circuit for a switched mode regulator which converts an input voltage to an output voltage. The controller includes a phase pin, a modulation circuit and a filter. The modulation circuit is configured to regulate the output voltage using the input voltage and output voltage level information. The filter has an input coupled to the phase pin and an output providing the output voltage level information which approximates the output voltage based on phase pin voltage. Various filters are contemplated, including passive and active low pass filters and the like. A regulator using such a controller is disclosed. A method of determining a voltage level of an output voltage includes receiving a phase voltage from a phase pin coupled to the phase node, and filtering the phase voltage to provide an output sense voltage having a voltage level approximating the voltage level of the output voltage.
摘要翻译： 一种用于将输入电压转换为输出电压的开关模式调节器的控制器集成电路。 控制器包括相位引脚，调制电路和滤波器。 调制电路被配置为使用输入电压和输出电压电平信息来调节输出电压。 滤波器具有耦合到相位引脚的输入端和提供基于相位引脚电压近似输出电压的输出电压电平信息的输出。 涵盖了各种滤波器，包括无源和有源低通滤波器等。 公开了一种使用这种控制器的调节器。 确定输出电压的电压电平的方法包括从耦合到相位节点的相位引脚接收相电压，以及对相电压进行滤波以提供具有接近输出电压的电压电平的电压电平的输出感测电压。
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9.发明申请SYSTEM AND METHOD FOR DETECTION AND COMPENSATION OF AGGRESSIVE OUTPUT FILTERS FOR SWITCHED MODE POWER SUPPLIES 有权用于切换模式电源的缓冲输出滤波器的检测和补偿的系统和方法公开(公告)号：US20110260703A1
公开(公告)日：2011-10-27
申请号：US12894395
申请日：2010-09-30
IPC分类号： G05F1/44
CPC分类号： H02M3/1563
摘要： A controller for a switched mode power supply converting an input voltage to a regulated output voltage according to one embodiment includes a control network and a detection network. The control network develops a pulse width control signal for regulating a level of the output voltage. The detection network detects a phase lag of the output voltage and adjusts operation of the control network based on the phase lag. The phase lag may be determined from any parameter incorporating phase shift, such as the output voltage or the compensation voltage. Various alternative schemes are disclosed for adjusting the control loop, including, but not limited to, adding slope compensation, adjusting window resistance or window current, adding adjustment current to adjust ripple voltage, adjusting ripple transconductance, and adjusting ripple capacitance. Digital and analog compensation adjustment schemes are disclosed.
摘要翻译： 根据一个实施例的用于将输入电压转换为稳定输出电压的开关模式电源的控制器包括控制网络和检测网络。 控制网络开发用于调节输出电压电平的脉冲宽度控制信号。 检测网络检测输出电压的相位滞后，并根据相位滞后调整控制网络的运行。 可以从包含相移的任何参数（例如输出电压或补偿电压）确定相位滞后。 公开了用于调整控制回路的各种替代方案，包括但不限于：添加斜率补偿，调整窗口电阻或窗口电流，增加调节电流以调整纹波电压，调整纹波跨导和调整纹波电容。 公开了数字和模拟补偿调整方案。
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公开(公告)号：US09300202B2
公开(公告)日：2016-03-29
申请号：US13536862
申请日：2012-06-28
CPC分类号： H02M3/156 , H02M3/1588 , H02M2001/0025 , H02M2001/0032 , H02M2003/1566 , Y02B70/1466 , Y02B70/16
摘要： A regulator system with dynamic droop including a regulator control network which is adapted to control regulation of an output voltage to a reference level, a DC droop network which provides a droop signal to modify the reference level based on output load according to a predetermined DC load line, and a dynamic droop network which adjusts the droop signal to delay recovery to the predetermined DC load line within an AC load line tolerance in response to a load transient. A transient reduction network may be included to reduce transient overshoot for load insertion or release depending upon duty cycle type. The dynamic droop network adjusts the droop signal to optimize utilization of an AC delay parameter while transitioning between an AC offset voltage allowance and the predetermined DC load line.
摘要翻译： 具有动态下降的调节器系统，其包括调节器控制网络，其适于将输出电压调节到参考电平; DC下降网络，其根据预定的DC负载输出负载来提供下垂信号以修改参考电平 线路和动态下降网络，其调节下降信号以响应于负载瞬变在AC负载线路公差内延迟恢复到预定DC负载线路。 可以包括瞬态还原网络以减少负载插入或释放的瞬态过冲，这取决于占空比类型。 动态下垂网络调整下垂信号以优化AC延迟参数的利用率，同时在AC偏移电压容限和预定DC负载线之间转换。
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