公开(公告)号：US06940733B2

公开(公告)日：2005-09-06

申请号：US10646450

申请日：2003-08-22

申请人： David Chalmers Schie ,  Alexander Mednik ,  James Hung Nguyen ,  Sang Ton Ngo ,  Khai Minh Le ,  Wei Gu ,  Larry Kerenyi

发明人： David Chalmers Schie ,  Alexander Mednik ,  James Hung Nguyen ,  Sang Ton Ngo ,  Khai Minh Le ,  Wei Gu ,  Larry Kerenyi

IPC分类号： H02M1/00 ,  H02M1/42 ,  H02M3/158 ,  H02M3/335

CPC分类号： H02M1/4225 ,  H02M3/1588 ,  H02M2001/0022 ,  H02M2001/007 ,  Y02B70/126 ,  Y02B70/1466

摘要： A switch state controller generating a pulse train is used in a power converter utilizing a plurality of converter stages all simultaneously controlled by a single switch controlled by said pulse train. On time of the pulse train is controlled according to an input or interim node characteristic of the supply and period is controlled by a characteristic of the output of the converter. This allows development of AC-to-DC converters, including power-factor-correction converters, and DC to DC converters with high conversion ratio with minimal parts count & high reliability.

摘要翻译： 产生脉冲序列的开关状态控制器被使用在利用由所述脉冲串控制的单个开关同时控制的多个转换器级的功率转换器中。 根据输入或中间节点特性对脉冲序列的启动时间进行控制，周期由转换器的输出特性控制。 这允许开发包括功率因数校正转换器在内的AC-DC转换器，以及具有高转换比的DC-DC转换器，具有最小的部件数量和高可靠性。

公开(公告)号：US06781351B2

公开(公告)日：2004-08-24

申请号：US10283395

申请日：2002-10-28

申请人： Alexander Mednik ,  David Chalmers Schie ,  Wei Gu

发明人： Alexander Mednik ,  David Chalmers Schie ,  Wei Gu

IPC分类号： G05F110

CPC分类号： H02M1/4208 ,  Y02B70/126

摘要： AC/DC cascaded power converters having high DC conversion ratio and improved AC line harmonics provide low input harmonic currents, high power factor and efficient operation for low voltage DC outputs when coupled directly to a source of unfiltered rectified AC voltage. The power converter incorporates an intermediate storage element that provides most or all of the energy storage capacitance within the power converter and a blocking device that enables continuous energy transfer from AC line to output to achieve unity power factor and regulated output while maintaining low AC input current ripple.

摘要翻译： 具有高直流转换比和改进的交流线路谐波的AC / DC级联功率转换器在直接耦合到未滤波的整流交流电压源时提供低输入谐波电流，高功率因数和低电压直流输出的高效运行。 功率转换器包括中间存储元件，其提供功率转换器内的大部分或全部能量存储电容，以及阻塞装置，其能够实现从AC线到输出的连续能量传递，以实现单位功率因数和稳压输出，同时保持低AC输入电流 波纹。

公开(公告)号：US07622820B1

公开(公告)日：2009-11-24

申请号：US12107832

申请日：2008-04-23

申请人： Aleksandar Prodic ,  Zhenyu Zhao ,  David Chalmers Schie

发明人： Aleksandar Prodic ,  Zhenyu Zhao ,  David Chalmers Schie

IPC分类号： H02M3/337

CPC分类号： H02M3/158 ,  H02M1/088 ,  H02M2001/0012 ,  H02M2003/1566 ,  Y10T307/406 ,  Y10T307/461

摘要： A switch-mode power supply (SMPS) with auto-tuning using limit-cycle oscillation response evaluation provides optimized performance with reduced capacitance and inductance requirements for a given design. During operation of the SMPS, parameters of the converter are extracted, and the feedback and/or feed-forward compensation is adjusted to either hold the loop bandwidth of the converter near the critical bandwidth of the output capacitors, or maintain output voltage transients within a specified limit. The compensator response is either periodically updated, or is updated in response to an event, such as detection of a transient voltage spike having a characteristic that exceeds one or more predetermined thresholds.

摘要翻译： 使用极限周期振荡响应评估的具有自整定功能的开关电源（SMPS）为给定设计降低了电容和电感要求，提供了优化的性能。 在SMPS运行期间，提取转换器的参数，并且调整反馈和/或前馈补偿以保持转换器在输出电容器的临界带宽附近的环路带宽，或将输出电压瞬变保持在一个 指定限制。 补偿器响应周期性地更新或响应于诸如检测到具有超过一个或多个预定阈值的特性的瞬态电压尖峰的事件被更新。

公开(公告)号：US06958920B2

公开(公告)日：2005-10-25

申请号：US10838820

申请日：2004-05-04

申请人： Alexander Mednik ,  David Chalmers Schie ,  James Hung Nguyen ,  Wei Gu

发明人： Alexander Mednik ,  David Chalmers Schie ,  James Hung Nguyen ,  Wei Gu

IPC分类号： H02M3/335

CPC分类号： H02M3/33523

摘要： A switching power converter and method of controlling an output voltage thereof using predictive sensing of magnetic flux provides a low-cost switching power converter via primary-side control using a primary-side winding. An integrator generates a voltage that represents flux within a magnetic element by integrating a primary-side winding voltage. A detection circuit detects the end of a half-cycle of post-conduction resonance that occurs in the power magnetic element subsequent to zero energy level in the power magnetic element. The integrator voltage is stored at the end of the half-cycle and is used to determine a sampling point prior to or equal to the start of post-conduction resonance in a subsequent switching cycle of the power converter. The primary-side winding voltage is then sampled at the sampling point, providing an indication of the output voltage of the power converter by which the output voltage of the converter can be controlled.

摘要翻译： 开关功率转换器和使用磁通量预测传感来控制其输出电压的方法通过使用初级侧绕组的初级侧控制提供低成本开关功率转换器。 积分器通过积分初级侧绕组电压产生表示磁性元件内的磁通的电压。 检测电路检测在功率磁性元件中的零能级之后发生在功率磁性元件中的后传导谐振的半周期的结束。 积分器电压在半周期结束时被存储，并且用于在功率转换器的后续切换周期中确定等于或等于后导通谐振开始之后的采样点。 然后在采样点对初级侧绕组电压进行采样，提供功率转换器的输出电压的指示，通过该指示可以控制转换器的输出电压。

公开(公告)号：US06771679B2

公开(公告)日：2004-08-03

申请号：US09859570

申请日：2001-05-16

申请人： David Chalmers Schie

发明人： David Chalmers Schie

IPC分类号： H01S300

CPC分类号： H01S5/062 ,  H01S5/0427 ,  H01S5/0617 ,  H01S5/06213 ,  H01S5/0683

摘要： An apparatus and method for programmable control of laser diode modulation and operating point provides control for laser diodes having widely varying characteristics, such as laser diodes from a variety of manufacturers. Operating a wide variety of lasers is useful for implementation of a device independent integrated circuit for control of a laser diode. Laser diode maximum AC drive levels, AC input circuit response and DC operating point are programmed via a programmable storage coupled via control circuits to a drive amplifier and a bias circuit. The laser diode modulation control may be combined with laser diode bias control in a single integrated circuit, providing a single-chip solution for laser diode transceiver module manufacturers. The programmable storage may be one-time programmable for factory customization of laser diode transceiver module diodes, or may be an electrically alterable storage.

摘要翻译： 用于激光二极管调制和操作点的可编程控制的装置和方法为具有广泛变化特性的激光二极管提供控制，例如来自各种制造商的激光二极管。 操作各种激光器对于实现用于控制激光二极管的独立于设备的集成电路是有用的。 激光二极管最大交流驱动电平，交流输入电路响应和直流工作点通过可编程存储器编程，通过控制电路耦合到驱动放大器和偏置电路。 激光二极管调制控制可以与单个集成电路中的激光二极管偏置控制相结合，为激光二极管收发器模块制造商提供单芯片解决方案。 可编程存储器可以是一次性可编程的，用于工厂定制激光二极管收发器模块二极管，或者可以是电可更改的存储器。