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公开(公告)号：US06580258B2
公开(公告)日：2003-06-17
申请号：US09978120
申请日：2001-10-15
IPC分类号： G05F140
CPC分类号： H02M3/156 , H02M3/1588 , H02M2001/0032 , Y02B70/1466 , Y02B70/16
摘要： A circuit and method for controlling a switching voltage regulator having (1) a switch including one or more switching transistors and (2) an output adapted to supply current at a regulated voltage to a load including an output capacitor. The circuit and method generates a control signal to turn said one or more switching transistors OFF under operating conditions when the voltage at the output is capable of being maintained substantially at the regulated voltage by the charge on the output capacitor. Such a circuit and method increases the efficiency of the regulator circuit particularly at low average current levels.
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2.发明授权Control circuit and method for maintaining high efficiency over broad current ranges in a switching regular circuit 有权用于在开关规则电路中在宽电流范围内保持高效率的控制电路和方法公开(公告)号：US06304066B1
公开(公告)日：2001-10-16
申请号：US09395895
申请日：1999-09-14
IPC分类号： G05F140
CPC分类号： H02M3/156 , H02M3/1588 , H02M2001/0032 , Y02B70/1466 , Y02B70/16
摘要： A circuit and method for controlling a switching voltage regulator having (1) a switch including one or more switching transistors and (2) an output adapted to supply current at a regulated voltage to a load including an output capacitor. The circuit and method generates a control signal to turn said one or more switching transistors OFF under operating conditions when the voltage at the output is capable of being maintained substantially at the regulated voltage by the charge on the output capacitor. Such a circuit and method increases the efficiency of the regulator circuit particularly at low average current levels.
摘要翻译： 一种用于控制开关电压调节器的电路和方法，该开关电压调节器具有（1）包括一个或多个开关晶体管的开关和（2）适于向包括输出电容器的负载提供以调节电压的电流的输出。 该电路和方法产生一个控制信号，以在输出电压能够通过输出电容器上的电荷基本保持在调节电压的工作条件下使所述一个或多个开关晶体管截止。 这种电路和方法特别是在较低的平均电流水平下提高了调节器电路的效率。
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3.发明授权
公开(公告)号：US5731731A
公开(公告)日：1998-03-24
申请号：US786500
申请日：1997-01-21
IPC分类号： H02M3/155 , H02M3/158 , H03K17/693
CPC分类号： H02M3/158 , H02M2001/0032 , Y02B70/16
摘要： Switching regulator circuits and methods are provided in which the output circuit is adaptable to maintain high efficiency over various load current levels. The regulator circuits generate one or more control signals in response to the load current and selectively route a switch driver control signal to one or more switches in the output circuit. The switches differ in their size, such that the most efficient switch can be used at a particular load current level. At low load current levels, the driver control signal is routed to output circuitry with smaller switch devices, which incur smaller driver current losses for a given frequency of operation, thereby increasing the regulator efficiency. At high load current levels, the driver control signal is routed to large switch devices, which incur greater driver current losses for a given frequency of operation, but which have a lower impedance. The regulator thus maintains high efficiency over a wide range of load currents while operating at a constant frequency.
摘要翻译： 提供了开关调节器电路和方法，其中输出电路适用于在各种负载电流水平上保持高效率。 调节器电路响应于负载电流产生一个或多个控制信号，并且选择性地将开关驱动器控制信号路由到输出电路中的一个或多个开关。 这些开关的尺寸不同，使得最高效的开关可以在特定负载电流水平下使用。 在低负载电流电平下，驱动器控制信号被路由到具有较小开关器件的输出电路，这对于给定的操作频率会产生更小的驱动器电流损耗，从而提高了调节器的效率。 在高负载电流水平下，驱动器控制信号被路由到大型开关器件，这对于给定的工作频率而言具有更大的驱动电流损耗，但具有较低的阻抗。 因此，在恒定频率下工作时，稳压器在宽范围的负载电流下保持高效率。
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4.发明授权
公开(公告)号：US5408150A
公开(公告)日：1995-04-18
申请号：US35423
申请日：1993-03-22
申请人： Milton E. Wilcox
发明人： Milton E. Wilcox
IPC分类号： H02M1/00 , H02M1/38 , H02M7/538 , H03K17/06 , H03K17/082 , H03K17/687 , H03F3/20
CPC分类号： H02M7/538 , H02M1/38 , H03K17/063 , H03K17/0822 , H03K17/6871
摘要： A driver circuit and method for alternately driving first and second power transistors is provided. The driver circuit includes shoot-through reduction circuitry for monitoring the gate-to-source voltages of the two power transistors so as to inhibit the turning-ON of each power transistor until the gate-to-source voltage of the other power transistor has fallen to a voltage level indicative of the other transistor being OFF. Additionally, the driver circuit includes a circuit to prevent transient signals from said power transistors from affecting the operation of the driver circuit.
摘要翻译： 提供了用于交替驱动第一和第二功率晶体管的驱动电路和方法。 驱动器电路包括用于监视两个功率晶体管的栅极 - 源极电压的直通式降低电路，以便抑制每个功率晶体管的导通，直到另一个功率晶体管的栅极 - 源极电压下降 到指示其它晶体管截止的电压电平。 此外，驱动器电路包括一个电路，用于防止来自所述功率晶体管的瞬态信号影响驱动器电路的操作。
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公开(公告)号：US4275419A
公开(公告)日：1981-06-23
申请号：US125605
申请日：1980-02-28
申请人： Milton E. Wilcox
发明人： Milton E. Wilcox
CPC分类号： H04N5/455
摘要： A video amplifier, for use with a synchronous detector, employs a first differential amplifier stage, coupled through a level-shifting circuit to the synchronous detector output. A noise-responsive second differential amplifier stage has its output cross connected with the first differential amplifier and is biased to be normally unresponsive. In the event of an inverted noise impulse at the detector output, the second differential amplifier is turned on and its cross-connected output cancels the output of the first differential amplifier, thus canceling the noise impulse. If the noise is strong enough, the output will go into the black video region. This avoids the excess white video noise which results in very undesirable spot blooming.
摘要翻译： 与同步检测器一起使用的视频放大器采用第一差分放大器级，通过电平移位电路耦合到同步检测器输出端。 噪声响应的第二差分放大器级的输出与第一差分放大器交叉连接并被偏置为通常无响应。 在检测器输出处有反相噪声冲击的情况下，第二差分放大器导通，其交叉连接的输出消除第一差分放大器的输出，从而消除噪声冲击。 如果噪声足够强，输出将进入黑色视频区域。 这避免了过多的白色视频噪声，导致非常不希望的斑点开花。
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6.发明授权Differential transistor pair integrated circuit oscillator with L-C tank circuit 失效差分晶体管对集成电路振荡器与L-C电路
公开(公告)号：US4063193A
公开(公告)日：1977-12-13
申请号：US731167
申请日：1976-10-12
申请人： Milton E. Wilcox
发明人： Milton E. Wilcox
CPC分类号： H03K3/2823
摘要： A differential transistor pair has an antiresonant tank connected between collectors. Feedback is achieved using a pair of cross connected zener diodes biased into reverse breakdown. A balanced two-pin version provides paraphase output and an unbalanced single-pin version is available for single phase output. The single pin version can include a current mirror for biasing the zener diodes with constant current. The oscillator can be temperature compensated by means of a temperature programmed current source.
摘要翻译： 差分晶体管对具有连接在收集器之间的反谐振罐。 使用一对偏置于反向击穿的交叉连接的齐纳二极管实现反馈。 平衡的双引脚版本提供了后期输出，单相输出不平衡单引脚版本。 单引脚版本可以包括用于以恒定电流偏置齐纳二极管的电流镜。 振荡器可以通过温度编程的电流源进行温度补偿。
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公开(公告)号：US6127815A
公开(公告)日：2000-10-03
申请号：US260990
申请日：1999-03-01
申请人： Milton E. Wilcox
发明人： Milton E. Wilcox
CPC分类号： H02M3/156 , G05F1/565 , H02M2001/0032 , Y02B70/16
摘要： A switching mode voltage regulator circuit that operates at reduced quiescent current levels is provided. The voltage regulator preferably includes a control circuit and a switching element that connects and disconnects filter circuitry from the control circuit. An error amplifier in the control circuit is placed in a micropower operating state when the regulator is in standby mode to reduce quiescent current.
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8.发明授权Synchronous switching regulator which employs switch voltage-drop for current sensing 失效同步开关稳压器，采用开关电压降电流检测
公开(公告)号：US5847554A
公开(公告)日：1998-12-08
申请号：US878631
申请日：1997-06-13
CPC分类号： H02M3/1588 , H02M2001/0009 , Y02B70/1466
摘要： Synchronous switching regulator circuits with voltage-drop sensing circuitry are presented in which the current sensing element typically in series with a load is eliminated, resulting in reduced dissipative losses and less costly manufacture. Voltage drops are measured across the regulator's synchronous switching element, and, in some cases, also across the regulator's main switching element. Measured voltage drops are used to derive a current analog signal indicative of the amount of current being supplied by the regulator. The current signal is then compared with a threshold value to determine whether the regulator's duty cycle should be varied.
摘要翻译： 提出了具有电压降检测电路的同步开关调节器电路，其中通常与负载串联的电流感测元件被消除，导致减少的耗散损耗和较低成本的制造。 在整个调节器的同步开关元件上测量电压降，并且在某些情况下也通过调节器的主开关元件进行测量。 测量的电压降用于导出指示由调节器提供的电流量的当前模拟信号。 然后将当前信号与阈值进行比较，以确定调节器的占空比是否应该改变。
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公开(公告)号：US4642489A
公开(公告)日：1987-02-10
申请号：US657328
申请日：1984-10-03
申请人： Milton E. Wilcox
发明人： Milton E. Wilcox
CPC分类号： H03K5/26 , H03D13/008 , H03D2200/0047
摘要： A sampled data phase detector is created using a differential amplifier that is provided with a feedback capacitor connected between the output and the inverting input. A reference potential is coupled to the noninverting input. A coupling capacitor is connected between the inverting input and a sampling switch that switches the coupling capacitor alternately between ground and a circuit input terminal. A second switch alternately shorts out the feedback capacitor at the clock rate during the time interval the input capacitor is grounded. In this state both inputs and the output are forced to the reference potential. On the other half of the clock cycle the amplifier input is coupled to sense the data signal. The result is a rectified version of the data signal appearing at the amplifier output. The d-c level of this signal is related to the amplitude and phase of the data signal. A full wave version of the circuit is also disclosed.
摘要翻译： 使用差分放大器创建采样数据相位检测器，该差分放大器设置有连接在输出和反相输入端之间的反馈电容器。 参考电位耦合到同相输入。 耦合电容器连接在反相输入端和采样开关之间，该开关将耦合电容交替地切换到地与电路输入端之间。 在输入电容器接地的时间间隔期间，第二开关以时钟速率交替地短路反馈电容器。 在这种状态下，输入和输出都被强制为参考电位。 在另一半时钟周期，放大器输入被耦合以感测数据信号。 结果是出现在放大器输出端的数据信号的整流版本。 该信号的d-c电平与数据信号的幅度和相位有关。 还公开了全波型的电路。
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公开(公告)号：US4520324A
公开(公告)日：1985-05-28
申请号：US474628
申请日：1983-03-11
CPC分类号： H03F1/223 , H03F3/45188 , H03G1/0029 , H03F2200/306 , H03F2203/45466 , H03F2203/45704
摘要： A circuit is disclosed for operating an MOS transistor in its resistive mode. A cascode transistor is used to clamp the voltage across the resistive transistor to the required level. The circuit gain can be controlled by controlling voltage across the resistive transistor.
摘要翻译： 公开了一种在其电阻模式下操作MOS晶体管的电路。 使用共源共栅晶体管将电阻晶体管两端的电压钳位到所需电平。 可以通过控制电阻晶体管两端的电压来控制电路增益。
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