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21. 发明申请

US20080001553A1 Gate driver topology for maximum load efficiency 有权
标题翻译：门驱动器拓扑，以实现最大负载效率
公开(公告)号：US20080001553A1
公开(公告)日：2008-01-03
申请号：US11479675
申请日：2006-06-30
申请人： Weihong Qiu , Ben Dowlat , Rami Abou-Hamze , Steven Laur
发明人： Weihong Qiu , Ben Dowlat , Rami Abou-Hamze , Steven Laur
IPC分类号： H05B41/36
CPC分类号： H03K17/6871 , H02M3/1588 , H03K17/0822 , Y02B70/1466
摘要： A circuit comprises a first input for receiving a supply voltage and a second input for receiving a sensed current signal from an output of a DC to DC converter. The circuit also includes an output voltage for providing an adjustable drive voltage to a drive circuit. The circuit additionally includes circuitry for adjusting the drive voltage responsive to supply voltage and the sensed current signal.
摘要翻译：电路包括用于接收电源电压的第一输入端和用于从DC至DC转换器的输出端接收感测的电流信号的第二输入端。电路还包括用于向驱动电路提供可调驱动电压的输出电压。电路还包括用于响应于电源电压和所感测的电流信号来调节驱动电压的电路。

22. 发明申请

US20070013356A1 PWM controller with dual-edge modulation using dual ramps 有权
标题翻译： PWM控制器采用双路斜坡调制
公开(公告)号：US20070013356A1
公开(公告)日：2007-01-18
申请号：US11318081
申请日：2005-12-23
申请人： Weihong Qiu , Zhixiang Liang , Robert Isham , Ben Dowlat , Rami Abou-Hamze
发明人： Weihong Qiu , Zhixiang Liang , Robert Isham , Ben Dowlat , Rami Abou-Hamze
IPC分类号： G05F1/00
CPC分类号： H02M3/1584 , H02M3/1588 , H02M2001/0025 , H02M2003/1566 , Y02B70/1466
摘要： A dual-edge modulation controller including first and second ramp circuits, first and second comparators, an error amplifier and pulse control logic. The first ramp circuit provides a leading-edge ramp synchronous with a clock. The error amplifier compares a feedback signal with a reference and provides a compensation signal. The first comparator compares the leading-edge ramp with the compensation signal and asserts a set signal. The second ramp circuit provides a trailing-edge ramp that begins ramping when the set signal is asserted. The second comparator compares the trailing-edge ramp with the compensation signal and asserts a reset signal. The pulse control logic asserts a PWM signal when the set signal is asserted and de-asserts the PWM signal when the reset signal is asserted. The controller may control multiple phases with current balancing. The slew rate of the ramps may be adjusted based on the number of PWM signal asserted.
摘要翻译：包括第一和第二斜坡电路，第一和第二比较器，误差放大器和脉冲控制逻辑的双边缘调制控制器。第一个斜坡电路提供与时钟同步的前沿斜坡。误差放大器将反馈信号与参考值进行比较，并提供补偿信号。第一个比较器将前沿斜坡与补偿信号进行比较，并置位一个置位信号。第二斜坡电路提供一个后沿斜坡，当设定信号被断言时开始斜坡。第二个比较器将后沿斜坡与补偿信号进行比较，并确定复位信号。当置位信号置位时，脉冲控制逻辑置位PWM信号，并在复位信号置位时取消置位PWM信号。控制器可以通过电流平衡控制多个相。斜坡的转换速率可以根据断言的PWM信号的数量进行调整。

23. 发明申请

US20060238179A1 Semi-clockless, cascaded, current-mode power regulator having high noise immunity and arbitrary phase count 有权
标题翻译：半无时钟，级联，电流模式功率调节器，具有高抗噪性和任意相位数
公开(公告)号：US20060238179A1
公开(公告)日：2006-10-26
申请号：US11185353
申请日：2005-07-20
申请人： Matthew Harris , Weihong Qiu
发明人： Matthew Harris , Weihong Qiu
IPC分类号： G05F1/00
CPC分类号： H02M3/1584 , H02M2001/0048 , Y02B70/1491
摘要： A semi-clockless, cascaded, current-mode regulator has a first regulator that receives a clock signal from a controller. By ‘semi-clockless’ is meant that a clock signal is applied to the first of a cascaded plurality of regulators, and that as a result of the cascading of clock delay circuits in each of the regulators, the remaining regulators receive sequentially delayed versions of the clock signal applied to the first regulator. The regulators are coupled to control the operations of associated pulse width modulation controlled switching circuits. Outputs of the switching circuits are combined to realize a multi-phase output voltage.
摘要翻译：半无时钟级联电流模式调节器具有从控制器接收时钟信号的第一调节器。 “半无时钟”是指时钟信号被施加到级联的多个调节器中的第一个，并且由于每个调节器中的时钟延迟电路的级联，其余调节器接收顺序延迟的时钟信号施加到第一调节器。耦合调节器以控制相关的脉宽调制控制开关电路的操作。组合开关电路的输出以实现多相输出电压。

24. 发明授权

US06819575B1 AC/DC switch mode power supply with power factor correction using direct energy transfer concept 有权
标题翻译： AC / DC开关模式电源，采用直接能量转换概念进行功率因数校正
公开(公告)号：US06819575B1
公开(公告)日：2004-11-16
申请号：US10202794
申请日：2002-07-25
申请人： Issa Batarseh , Peter Kornetzky , Shiguo Luo , Weihong Qiu
发明人： Issa Batarseh , Peter Kornetzky , Shiguo Luo , Weihong Qiu
IPC分类号： H02M3335
CPC分类号： H02M1/4258 , Y02B70/126 , Y02P80/112
摘要： Power Factor Correction (PFC) “flyboost” cell, with a transformer having primary winding connected to input power and secondary winding connected to output rectifier, which has both functions of a flyback transformer and boost inductor. Combining the flyboost cell with DC/DC conversion cells, forms a single-stage PFC converters. Both cells share one main switch and one controller. Letting the flyboost cell operate at Discontinuous Conduction Mode, requires a simple control for high power factor. Through flyboost cell, part of output power is processed once by main switch, and is referred to as direct power transfer (DPT), which will significantly improve efficiency. The flyboost cell will automatically limit the DC bus voltage through flyboost transformer turn ratio. The converters are suitable for universal voltage applications.
摘要翻译：功率因数校正（PFC）“flyboost”单元，具有连接到输入功率的初级绕组的变压器和连接到输出整流器的次级绕组，其具有回扫变压器和升压电感器的功能。将flyboost单元与DC / DC转换单元相结合，形成单级PFC转换器。两个单元共享一个主开关和一个控制器。让飞行单元在不连续导通模式下工作，需要对高功率因数的简单控制。通过flyboost单元，输出功率的一部分由主开关处理一次，称为直接功率传输（DPT），这将显着提高效率。 flyboost单元将通过flyboost变压器匝数比自动限制直流母线电压。这些转换器适用于通用电压应用。

25. 发明授权

US08901832B2 LED driver system with dimmer detection 有权
标题翻译： LED驱动器系统，具有调光检测功能
公开(公告)号：US08901832B2
公开(公告)日：2014-12-02
申请号：US13536892
申请日：2012-06-28
申请人： Weihong Qiu , Rakesh Anumula , Fred F. Greenfeld
发明人： Weihong Qiu , Rakesh Anumula , Fred F. Greenfeld
IPC分类号： H05B37/00
CPC分类号： H05B33/0815
摘要： An LED driver system including an input receiving a rectified AC conductive angle modulated voltage on a rectified node, a converter, a low-pass filter, and AC detector, and a driver network. The converter is coupled to the rectified node and includes a power switching device coupled to a switching node, in which the power switching device is controlled to convert the rectified AC conductive angle modulated voltage to an output voltage and output current. The low-pass filter is configured to filter voltage of the switching node to provide a filtered voltage. The AC detector receives the filtered voltage and provides a current sense signal indicative thereof. The driver network controls duty cycle of the power switching device based on the current sense signal.
摘要翻译：一种LED驱动器系统，包括在整流节点上接收经整流的AC导电角度调制电压的输入，转换器，低通滤波器和AC检测器以及驱动器网络。转换器耦合到整流节点，并且包括耦合到开关节点的功率开关装置，其中控制功率开关装置将整流的AC导电角调制电压转换为输出电压和输出电流。低通滤波器被配置为对开关节点的电压进行滤波以提供滤波电压。 AC检测器接收经过滤波的电压并提供指示其的电流检测信号。驱动器网络基于电流检测信号来控制功率开关器件的占空比。

26. 发明授权

US08723500B2 System and method for preventing controller induced pulse skipping at low duty cycle operations 有权
标题翻译：用于在低占空比操作下防止控制器感应脉冲跳跃的系统和方法
公开(公告)号：US08723500B2
公开(公告)日：2014-05-13
申请号：US13235586
申请日：2011-09-19
申请人： Michael Jason Houston , Weihong Qiu , Emil Chen
发明人： Michael Jason Houston , Weihong Qiu , Emil Chen
IPC分类号： H02M3/156
CPC分类号： H02M3/1588 , H02M2001/0025 , Y02B70/1466
摘要： A voltage regulator generates a regulated output voltage responsive to an input voltage and drive control signals. An error amplifier generates an error voltage signal responsive to the regulated output voltage and a reference voltage. A PWM modulator generates a PWM control signal responsive to the error voltage signal, a ramp voltage and an inverse of the reference voltage. Control circuitry within the PWM modulator maintains the error voltage signal applied to the PWM modulator at substantially a same DC voltage level over the reference voltage operating range and maintains the error voltage signal above a minimum value of the ramp voltage. Driver circuitry generates the drive control signals responsive to the PWM control signal.
摘要翻译：电压调节器根据输入电压和驱动控制信号产生稳定的输出电压。误差放大器响应于调节的输出电压和参考电压产生误差电压信号。 PWM调制器响应于误差电压信号，斜坡电压和参考电压的反相器产生PWM控制信号。 PWM调制器内的控制电路将在PWM调制器上施加的误差电压信号保持在与参考电压工作范围基本相同的直流电压电平，并将误差电压信号保持在斜坡电压的最小值以上。驱动器电路根据PWM控制信号产生驱动控制信号。

27. 发明申请

US20120235630A1 CHARGING SYSTEM WITH ADAPTIVE POWER MANAGEMENT 审中-公开
标题翻译：具有自适应电力管理的充电系统
公开(公告)号：US20120235630A1
公开(公告)日：2012-09-20
申请号：US13421836
申请日：2012-03-15
申请人： Weihong Qiu , Xiaozhou Zhou , Jun Liu , Bertram J. Rodgers, III
发明人： Weihong Qiu , Xiaozhou Zhou , Jun Liu , Bertram J. Rodgers, III
IPC分类号： H02J7/00 , H02M7/02
CPC分类号： H02J7/022 , H02J7/045
摘要： An embodiment of a charger may include an input, at least one switch having a first node coupled to a reference voltage, a current sensor coupled between the input and a second node of the at least one switch, an output coupled to a third node of the at least one switch, and a charge controller coupled to the input to determine an input voltage, to the current sensor to determine an input current and to control inputs of the at least one switch. The at least one switch may be responsive to control signals supplied by the charge controller to the control inputs thereof to control voltage and current at the output of the charger. The charge controller may be responsive to the input voltage and the input current to produce the control signals in a manner that maximizes electrical power drawn at the input.
摘要翻译：充电器的实施例可以包括输入，具有耦合到参考电压的第一节点的至少一个开关，耦合到所述至少一个开关的输入端和第二节点之间的电流传感器，耦合到所述至少一个开关的第三节点的输出所述至少一个开关以及与所述输入端耦合以确定输入电压的充电控制器，所述电流传感器确定输入电流并控制所述至少一个开关的输入。至少一个开关可以响应于由充电控制器提供给其控制输入的控制信号，以控制充电器输出端的电压和电流。充电控制器可以响应输入电压和输入电流以产生控制信号，使得最大化在输入端的电功率。

28. 发明申请

US20110204947A1 METHOD AND APPARATUS FOR ADAPTIVELY MODIFYING A PULSE WIDTH OF A PULSE WIDTH MODULATED OUTPUT 有权
标题翻译：用于自适应调制脉冲宽度调制输出的脉冲宽度的方法和装置
公开(公告)号：US20110204947A1
公开(公告)日：2011-08-25
申请号：US12858181
申请日：2010-08-17
申请人： Weihong Qiu , Chun Cheung , Emil Chen
发明人： Weihong Qiu , Chun Cheung , Emil Chen
IPC分类号： H03K5/04
CPC分类号： H03K5/1565 , H03K7/08
摘要： Systems, methods, and apparatus for improving steady state operation of a pulse width modulator during transient and soft start events are described herein. An apparatus can include a phase component configured to adaptively modify a pulse width of a first pulse width modulated (PWM) output signal based on a pulse width of a PWM input signal. Further, the apparatus can include a power stage component configured to source at least one of a voltage or a current to a load based on the first PWM output signal. In one example, the phase component can be configured to linearly extend the pulse width of the first PWM output signal based on the pulse width of the PWM input signal. In another example, the phase component can be configured to adaptively modify the pulse width of the first PWM output signal based on a predetermined maximum pulse width.
摘要翻译：这里描述了用于在瞬态和软启动事件期间改善脉宽调制器的稳态操作的系统，方法和装置。装置可以包括相位分量，其被配置为基于PWM输入信号的脉冲宽度自适应地修改第一脉宽调制（PWM）输出信号的脉冲宽度。此外，该装置可以包括功率级组件，其被配置为基于第一PWM输出信号将至少一个电压或电流发送到负载。在一个示例中，相位分量可以被配置为基于PWM输入信号的脉冲宽度线性地扩展第一PWM输出信号的脉冲宽度。在另一示例中，相位分量可以被配置为基于预定的最大脉冲宽度自适应地修改第一PWM输出信号的脉冲宽度。

29. 发明授权

US07906948B2 Threshold voltage monitoring and control in synchronous power converters 有权
标题翻译：同步电源转换器的阈值电压监控与控制
公开(公告)号：US07906948B2
公开(公告)日：2011-03-15
申请号：US12116092
申请日：2008-05-06
申请人： Weihong Qiu , Noel B. Dequina
发明人： Weihong Qiu , Noel B. Dequina
IPC分类号： G05F1/613 , G05F1/656
CPC分类号： H02M3/1588 , Y02B70/1466
摘要： A method of providing threshold voltage monitoring and control in synchronous power converters is disclosed. The method establishes a threshold voltage level for at least one of an upper gate and a lower gate power switch in a synchronous power converter. The threshold voltage levels indicate switching delay times are present in the upper and lower gate power switches. The method detects body diode conduction levels for both the upper and lower gate power switches. When at least one of the detected body diode conduction levels exceed a prescribed body diode conduction level, the method adjusts the threshold voltage level for at least one of the upper and lower gate power switches to reduce a body diode conduction time for the at least one of the upper and lower gate power switches.
摘要翻译：公开了一种在同步电源转换器中提供阈值电压监测和控制的方法。该方法为同步电力转换器中的上栅极和下栅极功率开关中的至少一个建立阈值电压电平。阈值电压指示开关延迟时间存在于上，下栅极电源开关中。该方法检测上下栅极电源开关的体二极管导通电平。当检测到的身体二极管导通电平中的至少一个超过规定的体二极管导通电平时，该方法调整上和下栅极功率开关中的至少一个的阈值电压电平，以减少至少一个的二极管导体时间的上，下门电源开关。

30. 发明授权

US07782031B2 Power supply control 有权
标题翻译：电源控制
公开(公告)号：US07782031B2
公开(公告)日：2010-08-24
申请号：US12006703
申请日：2008-01-04
申请人： Weihong Qiu , Shangyang Xiao , Jun Liu
发明人： Weihong Qiu , Shangyang Xiao , Jun Liu
IPC分类号： G05F3/16 , G05F1/00
CPC分类号： G06F1/26 , H01F3/14 , H01F17/04 , H02M3/1584
摘要： A method includes simultaneously driving a load via first and second magnetically coupled regulator phases for a first duration, uncoupling one of the phases from the load after the first duration, and, after uncoupling the one phase from the load, allowing a current through the one phase to decay. For example, such a method allows energy stored in the uncoupled phase to be recaptured to the output transient response of a power supply.
摘要翻译：一种方法包括通过第一和第二磁耦合调节器相位同时驱动负载第一持续时间，在第一持续时间之后从负载中解耦耦合相中的一个，并且在将一个相与负载分离后，允许电流通过一个相衰变。例如，这种方法允许存储在非耦合相中的能量被重新捕获到电源的输出瞬态响应。

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