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1. 发明授权

US07072198B2 DC/DC converter having improved regulation 有权
标题翻译： DC / DC转换器具有改进的调节
公开(公告)号：US07072198B2
公开(公告)日：2006-07-04
申请号：US10681887
申请日：2003-10-09
申请人： James L. Krug , David W. Evans , J. Patrick Kawamura
发明人： James L. Krug , David W. Evans , J. Patrick Kawamura
IPC分类号： H02M7/217
CPC分类号： H02M3/156 , H02M2001/0025
摘要： A switching mode converter, having a switching transistor and an inductor, has a discontinuity detector coupled to the inductor which detects when the converter enters the discontinuous mode. The discontinuity detector determines the portion of the cycle of the switching transistor in which the converter is in the discontinuous mode. A feedback controller is coupled to the output of the converter and to the discontinuity detector which alters a feedback control signal of the converter.
摘要翻译：具有开关晶体管和电感器的开关模式转换器具有耦合到电感器的不连续检测器，其检测转换器何时进入不连续模式。不连续检测器确定转换器处于不连续模式的开关晶体管的周期部分。反馈控制器耦合到转换器的输出和改变转换器的反馈控制信号的不连续检测器。

2. 发明授权

US07061214B2 Single inductor dual output buck converter with frequency and time varying offset control 有权
标题翻译：单电感双输出降压转换器，具有频率和时变偏移控制
公开(公告)号：US07061214B2
公开(公告)日：2006-06-13
申请号：US10722270
申请日：2003-11-25
申请人： Valerian Mayega , Jun Chen , James L. Krug , David W. Evans
发明人： Valerian Mayega , Jun Chen , James L. Krug , David W. Evans
IPC分类号： G05F1/577
CPC分类号： H02M3/156 , H02M3/155
摘要： A single-inductor dual-output buck converter and control method that facilitates power conversion by converting a single DC power source/supply into two separate DC outputs, each of which can be configured to provide a selected/desired voltage by selection of respective duty cycles. The topology of the inverter includes a pair of diodes or switches that can selectively re-circulate inductor current. The converter is generally operated at a fixed frequency with four stages of operation. A first and third stage of operation provide power to a first and second output, respectively. A second and fourth stage of operation re-circulate inductor current and can partially recharge a battery type power source. The power output for each stage (voltage and current) can be selectively obtained by computing and employing appropriate time periods for the stages of operation that correspond to appropriate duty cycles.
摘要翻译：单电感双输出降压转换器和控制方法，通过将单个DC电源/电源转换为两个独立的直流输出来促进功率转换，每个直流输出可以被配置为通过选择相应的占空比来提供选定/期望的电压。逆变器的拓扑结构包括一对二极管或开关，可以选择性地重新循环电感电流。转换器通常以固定频率工作，具有四个操作阶段。第一和第三操作阶段分别为第一和第二输出提供电力。第二和第四阶段的操作重新循环电感电流，并且可以部分地为电池型电源充电。可以通过对与适当的占空比相对应的操作阶段计算和采用适当的时间周期来选择性地获得每个级的电力输出（电压和电流）。

3. 发明授权

US06686729B1 DC/DC switching regulator having reduced switching loss 有权
标题翻译： DC / DC开关稳压器具有降低的开关损耗
公开(公告)号：US06686729B1
公开(公告)日：2004-02-03
申请号：US10271121
申请日：2002-10-15
申请人： J. Patrick Kawamura , James L. Krug , David W. Evans
发明人： J. Patrick Kawamura , James L. Krug , David W. Evans
IPC分类号： G05F140
CPC分类号： H03K17/04163 , H02M3/155 , H02M2001/0048 , H03K2217/0036 , Y02B70/1491
摘要： A DC/DC switching regulator has a semiconductor switch coupled to an inductor, a first capacitor and a rectifier. A circuit to improve the switching efficiency of the semiconductor switch has a transmission gate coupled between the gate of the semiconductor switch and a second capacitor. The transmission gate is turned ON only when the gate of the semiconductor switch is about to make a positive or negative transition and isolated from the first and second voltage sources. A portion of the charge stored in the parasitic capacitance of the gate of the semiconductor switch can be stored in the second capacitor and reused to partially drive the semiconductor switch from the second to the first ON/OFF state. A further embodiment employs this technique with a synchronous rectifier in the regulator circuit.
摘要翻译： DC / DC开关调节器具有耦合到电感器，第一电容器和整流器的半导体开关。用于提高半导体开关的开关效率的电路具有耦合在半导体开关的栅极和第二电容器之间的传输栅极。只有当半导体开关的栅极将要进行正或负的转换并且与第一和第二电压源隔离时，传输门才被接通。存储在半导体开关的栅极的寄生电容中的电荷的一部分可以存储在第二电容器中并重新用于将半导体开关从第二导通/断开状态部分地驱动。另一实施例在调节器电路中采用该技术与同步整流器。

4. 发明授权

US06515880B1 Soft-start control for DC/DC switching regulators 有权
标题翻译： DC / DC开关稳压器的软启动控制
公开(公告)号：US06515880B1
公开(公告)日：2003-02-04
申请号：US10090175
申请日：2001-10-19
申请人： David W. Evans , J. Patrick Kawamura , James L. Krug
发明人： David W. Evans , J. Patrick Kawamura , James L. Krug
IPC分类号： H02M710
CPC分类号： H02M1/36
摘要： Startup operation of a DC/DC switching regulator is controlled by providing a first signal (MAXDC) whose waveform has a duty cycle that varies over time, providing a second signal (620, 622) indicative of a load condition of the regulator, and combining the first and second signals to produce a third signal (312, 311). The third signal is used to control a power switch (231, 324) of the regulator.
摘要翻译：通过提供其波形具有随时间变化的占空比的第一信号（MAXDC）来控制DC / DC开关调节器的启动操作，提供指示调节器的负载状态的第二信号（620,622），以及组合第一和第二信号以产生第三信号（312,311）。第三个信号用于控制调节器的电源开关（231,324）。

5. 发明授权

US07224085B2 Single inductor dual output buck converter 有权
标题翻译：单电感双输出降压转换器
公开(公告)号：US07224085B2
公开(公告)日：2007-05-29
申请号：US10714103
申请日：2003-11-14
申请人： Jun Chen , Valerian Mayega , David W. Evans , James L. Krug
发明人： Jun Chen , Valerian Mayega , David W. Evans , James L. Krug
IPC分类号： H02J1/00
CPC分类号： H02M3/1588 , H02M2001/009 , Y02B70/1466 , Y10T307/707
摘要： A single-inductor dual-output buck converter facilitates power conversion by converting a single DC power source/supply into two separate DC outputs, each of which can be configured to provide a selected/desired voltage. The converter includes a single inductor and three power switches, which control operation of the converter. The converter has four basic stages of operation in which power is initially supplied to a first output that also stores charge. Subsequently, the stored charge of the first output is employed to provide power to a second output.
摘要翻译：单电感双输出降压转换器通过将单个DC电源/电源转换为两个独立的直流输出来促进功率转换，每个直流输出可以配置为提供所选择的/所需的电压。该转换器包括单个电感器和三个电源开关，用于控制转换器的工作。转换器具有四个基本操作阶段，其中电源最初被提供给也存储电荷的第一输出。随后，采用第一输出的存储电荷为第二输出提供电力。

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