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31. 发明授权

US07385376B2 Voltage regulator with high voltage protection 有权
标题翻译：稳压器具有高压保护功能
公开(公告)号：US07385376B2
公开(公告)日：2008-06-10
申请号：US11312074
申请日：2005-12-20
申请人： Alireza Zolfaghari
发明人： Alireza Zolfaghari
IPC分类号： G05F5/08 , G05F1/56
CPC分类号： G05F1/575
摘要： A method for regulating a voltage in an integrated circuit device includes providing a first regulated output based upon a first voltage input range and subsequently receiving the first regulated output and providing a second regulated output based upon a second voltage input range of the first regulated output. A circuit is further provided that operates accordingly. Additionally, a clipper circuit is provided at the input to protect for over voltage conditions that may results, for example, from a charging battery to cause an output voltage of the battery to substantially exceed ordinary output voltage levels.
摘要翻译：一种用于调节集成电路器件中的电压的方法包括：基于第一电压输入范围提供第一调节输出，随后接收第一调节输出，并且基于第一调节输出的第二电压输入范围提供第二调节输出。还提供了相应地进行操作的电路。此外，在输入端提供了一个限幅器电路，以保护可能导致例如从充电电池导致电池的输出电压基本上超过普通输出电压电平的过电压条件。

32. 发明授权

US6005362A Method and system for ride-through of an adjustable speed drive for voltage sags and short-term power interruption 失效
标题翻译：用于电压暂降和短期电源中断的可调速驱动器的穿越方法和系统
公开(公告)号：US6005362A
公开(公告)日：1999-12-21
申请号：US248769
申请日：1999-02-12
申请人： Prasad N. Enjeti , Jose L. Duran-Gomez
发明人： Prasad N. Enjeti , Jose L. Duran-Gomez
IPC分类号： H02M5/458 , H02M7/217 , H02P27/08 , G05F5/08 , H02M5/44
CPC分类号： H02P1/029 , H02M5/458 , H02M7/217 , H02P27/08 , H02M2001/0022
摘要： In one embodiment of the present invention, a system for ride-through of an adjustable speed drive for voltage sags is provided. The system comprises an adjustable speed drive including a three phase electric utility, a diode rectifier, a dc-link, an inverter, and a motor. Coupled to the adjustable speed drive is a ride-through circuit which includes a controller having a first input and a second input, the first input operable to receive the voltage from each phase of the three phase electric utility and determine the magnitude and phase of the voltage sag, and the second input operable to receive the dc-link voltage to ensure that the rated dc-link voltage is not exceeded. Also included is an IGBT coupled to an output of the controller and operable to switch on and off rapidly based on the amount of voltage sag. An inductor associated with the IGBT and operable to store energy when the IGBT is switched on and to transfer energy to the dc-link when the IGBT is off is also included. This maintains the dc-link voltage to provide ride-through operation of the adjustable speed drive.
摘要翻译：在本发明的一个实施例中，提供了一种用于电压骤降的可调速驱动器的穿越系统。该系统包括可调速驱动器，其包括三相电力公司，二极管整流器，直流链路，逆变器和电动机。耦合到可调速驱动器是一种穿越电路，其包括具有第一输入和第二输入的控制器，第一输入可操作以从三相电力公用设施的每个相接收电压，并且确定电压骤降，第二输入可操作以接收直流链路电压，以确保不超过额定直流链路电压。还包括耦合到控制器的输出端并且可操作以基于电压暂降量快速接通和断开的IGBT。与IGBT相关联的电感器，并且可以用于在IGBT导通时存储能量并且在IGBT关断时将能量传递到dc链路。这保持了直流链路电压以提供可调速驱动器的穿越操作。

33. 发明授权

US5994886A Internal step-down power supply circuit of semiconductor device 失效
标题翻译：半导体器件的内部降压电源电路
公开(公告)号：US5994886A
公开(公告)日：1999-11-30
申请号：US926463
申请日：1997-09-10
申请人： Naoharu Shinozaki
发明人： Naoharu Shinozaki
IPC分类号： G11C11/413 , G05F1/46 , G05F5/08 , G11C11/401 , G11C11/407 , H01L21/822 , H01L27/04
CPC分类号： G05F1/465
摘要： An internal step-down power supply circuit for lowering an external power supply voltage supplied from outside to an internal power supply voltage in a semiconductor device includes a circuit for generating the internal power supply voltage in response to a control voltage, potential regulation circuits for a normal operation and for a test operation, respectively, having fuse elements for making it possible to regulate the potential of the control circuit, and potential control circuits disposed for the normal operation and for the test operation, respectively, for controlling the potential of the control voltage on the basis of the output of the corresponding potential regulation circuit. The external power supply voltage is used as a power supply of the potential regulation circuit for the normal operation and the internal power supply voltage is used as a power supply of the potential regulation circuit for the test operation. This circuit construction can reduce a DC path current in a fuse circuit for regulating the potential of the internal step-down voltage power supply voltage and can provide low power consumption and stable operations.
摘要翻译：一种用于将从外部供应的外部电源电压降低到半导体器件中的内部电源电压的内部降压电源电路包括：用于响应于控制电压产生内部电源电压的电路，用于分别具有用于调节控制电路的电位的熔丝元件和用于正常操作和测试操作的电位控制电路的正常操作和测试操作，用于控制控制电位电压基于相应电位调节电路的输出。外部电源电压用作正常工作的电位调节电路的电源，内部电源电压用作用于测试操作的电位调节电路的电源。该电路结构可以减小熔丝电路中的DC路径电流，以调节内部降压电压电压的电位，并且可以提供低功耗和稳定的操作。

34. 发明授权

US5801522A Power limit circuit for computer system 失效
标题翻译：电脑系统功率限制电路
公开(公告)号：US5801522A
公开(公告)日：1998-09-01
申请号：US720211
申请日：1996-09-26
申请人： Philip James McKenzie
发明人： Philip James McKenzie
IPC分类号： G05F5/08 , G06F1/26
CPC分类号： G06F1/26
摘要： A method for controlling the power level of a computer system or the like provides a dual power range feature which allows a power supply to be used over a wide range of AC input voltages. The power control circuit employs a detector for the RMS voltage of the input power line, and a detector for the AC input current at the power line. These detected levels are applied to a multiplier to provide an indication of power input, multiplier output is compared with a reference to produce a control for the output power of the power supply. The duty cycle of an oscillator for an AC-to-DC conversion for a power factor control circuit within the power supply is the controlled element, using pulse width modulation. A dual power range is provided so that for low AC line voltages, where the AC line current would tend to be high, a lower power limit is in effect, then for higher AC line voltages, where AC line current is proportionally lower for a given power level, a higher power limit is allowed. This is accomplished by a simple and efficient circuit, in an example embodiment; when the RMS voltage of the AC input exceeds a certain level, the values of resistors in a voltage divider within the RMS voltage detector circuit are changed so that a different power limit is provided which is in excess of the first power limit. The switchover from one power limit to another is done by a non-linear switch device such as a diode turning on and adding a resistor in the voltage divider.
摘要翻译：用于控制计算机系统等的功率电平的方法提供双功率范围特征，其允许在宽范围的AC输入电压上使用电源。功率控制电路使用用于输入电力线的RMS电压的检测器和用于电力线上的AC输入电流的检测器。这些检测电平被施加到乘法器以提供功率输入的指示，乘法器输出与参考相比较以产生用于电源的输出功率的控制。用于电源内的功率因数控制电路的AC到DC转换的振荡器的占空比是使用脉宽调制的受控元件。提供双功率范围，使得对于交流线路电流趋于较高的低AC线路电压，实际上功率限制较低，则对于较高的交流线路电压，对于给定的交流线路电流，其中交流线路电流成比例地较低功率级别，允许更高的功率限制。这在一个示例性实施例中通过简单而有效的电路实现; 当AC输入的RMS电压超过一定电平时，RMS电压检测器电路内的分压器中的电阻值被改变，从而提供超过第一功率极限的不同功率限制。从一个功率限制到另一个功率限制的切换是通过非线性开关器件（例如二极管导通）和在分压器中增加一个电阻来完成的。

35. 发明授权

US5684392A System for extending operating time of a battery-operated electronic device 失效
标题翻译：延长电池供电电子设备工作时间的系统
公开(公告)号：US5684392A
公开(公告)日：1997-11-04
申请号：US538661
申请日：1995-10-03
申请人： Chi Shih Chang , Jonathan James Hurd , Stephen Francis Newton
发明人： Chi Shih Chang , Jonathan James Hurd , Stephen Francis Newton
IPC分类号： G05F5/08 , G06F1/08 , H02J7/00
CPC分类号： H02J7/0063 , G06F1/08 , H02J7/0065
摘要： A system supplies power to and controls the frequency of electronic circuitry. The system comprises a DC source for supplying power to the electronic circuitry and a voltage controlled oscillator powered by the DC source. An output of the oscillator provides a system clock for the electronic circuitry such that as a voltage of the DC source continuously drops, the operating voltage of the electronic circuitry and oscillator continuously drops and the frequency of the system clock continuously drops in a manner corresponding to the continuous drop in operating voltage. Thus, the oscillator supplies an operating frequency tailored to the operating voltage to permit the electronic circuitry to operate at high speed.
摘要翻译：系统为电子电路供电并控制频率。该系统包括用于向电子电路供电的DC源和由DC源供电的压控振荡器。振荡器的输出为电子电路提供系统时钟，使得当DC电源的电压连续下降时，电子电路和振荡器的工作电压连续下降，并且系统时钟的频率以对应于工作电压连续下降。因此，振荡器提供适合于工作电压的工作频率，以允许电子电路以高速运行。

36. 发明授权

US5541500A Power supply arrangement comprising a direct voltage monitoring circuit 失效
标题翻译：电源装置包括直流电压监控电路
公开(公告)号：US5541500A
公开(公告)日：1996-07-30
申请号：US714582
申请日：1990-07-16
申请人： Burghard Krahl
发明人： Burghard Krahl
IPC分类号： G05F5/08 , H02H1/00 , H02H3/00 , H02H3/20 , H02H3/24
CPC分类号： H02H3/243 , H02H1/0069 , H02H3/202 , H02H3/207
摘要： Power supply arrangement comprising a direct voltage monitoring circuit. A power supply arrangement comprising a direct voltage monitoring circuit for at least two different-polarity direct voltages connected to a common reference potential, and including a signal transmission element. The monitoring circuit arrangement has an enhanced accuracy of response with limited circuitry and cost. A series connection of a zener diode and a resistor is connected in shunt with each direct voltage. The junction point of each zener diode and resistor is connected to the base of a transistor. A first electrode of each transistor is connected to the signal transmission element and a second electrode.
摘要翻译：电源装置包括直流电压监控电路。一种电源装置，包括用于连接到公共参考电位的至少两个不同极性直流电压的直流电压监视电路，并且包括信号传输元件。监控电路装置具有增强的响应准确度，并且有限的电路和成本。齐纳二极管和电阻器的串联连接与每个直流电压分流。每个齐纳二极管和电阻的连接点连接到晶体管的基极。每个晶体管的第一电极连接到信号传输元件和第二电极。

37. 发明授权

US5424629A Power circuit for a semiconductor apparatus 失效
标题翻译：半导体装置的电源电路
公开(公告)号：US5424629A
公开(公告)日：1995-06-13
申请号：US865363
申请日：1992-04-08
申请人： Atsushi Fujiwara , Akinori Shibayama
发明人： Atsushi Fujiwara , Akinori Shibayama
IPC分类号： G05F3/24 , G05F5/08
CPC分类号： G05F3/247
摘要： A power circuit for a semiconductor apparatus comprising an internal power voltage generating circuit generating an internal power voltage, an external power voltage detecting circuit, a power voltage switching circuit switching the internal power voltage to the external power voltage in response to the output of the external power voltage detecting circuit, and a switching signal setting circuit. The output of the power voltage switching circuit is the internal power voltage when power is first applied to the semiconductor device. The switching signal setting circuit provides the correct power voltage switching signals quickly to the power voltage switching circuit when power is applied and the external power voltage is not inputted to the apparatus at the early stage of power application.
摘要翻译：一种用于半导体装置的电源电路，包括产生内部电源电压的内部电源电压产生电路，外部电源电压检测电路，电源电压切换电路，响应于外部的输出将内部电源电压切换到外部电源电压电源电压检测电路和开关信号设定电路。电源电压切换电路的输出是当第一次向半导体器件供电时的内部电源电压。开关信号设定电路在供电时向电源电压切换电路提供正确的电源电压切换信号，并且在电源应用的早期阶段未将外部电源电压输入到设备。

38. 发明授权

US5198747A Liquid crystal display driver and driver method 失效
标题翻译：液晶显示驱动和驱动方法
公开(公告)号：US5198747A
公开(公告)日：1993-03-30
申请号：US517989
申请日：1990-05-02
申请人： Michael H. Haight
发明人： Michael H. Haight
IPC分类号： G05F3/30 , G05F5/08 , G09G3/36 , H03M1/76
CPC分类号： G09G3/36 , G05F3/30 , G09G3/3696 , H03M1/76 , G09G2320/041
摘要： An LCD drive circuit includes a voltage divider circuitry which generates a plurality of voltages (V.sub.1 -V.sub.5) in response to a reference voltage. A substantially constant reference voltage is generated by a band-gap reference circuit (22). A digital-to-analog converter (32) allows the voltages to be adjusted responsive to digital control signals.
摘要翻译： LCD驱动电路包括分压电路，其响应于参考电压产生多个电压（V1-V5）。由带隙基准电路（22）产生基本恒定的参考电压。数模转换器（32）允许响应于数字控制信号来调节电压。

39. 发明授权

US4775829A On-chip voltage stabilizing circuit 失效
标题翻译：片上稳压电路
公开(公告)号：US4775829A
公开(公告)日：1988-10-04
申请号：US125900
申请日：1987-11-27
申请人： Gerhard Achstaetter
发明人： Gerhard Achstaetter
IPC分类号： G05F3/22 , G05F5/08
CPC分类号： G05F3/22
摘要： In order to substantially suppress the noise of an integrated constant-voltage source, an integrated circuit includes an RC low-pass filter having its capacitor connected between an external chip terminal and an external ground, while the remainder of the circuit is disposed on the integrated circuit chip. The resistor of the RC low-pass filter is connected to the constant voltage of a constant-voltage source, and the output of the RC low-pass filter is coupled to the base of a transistor connected ahead of emitter-follower transistors as in a Darlington circuit. The supply voltages are obtained from the emitters of the emitter-follower transistors. A constant-current source driven by the output of the RC low-pass filter via a second resistor serves as a sink for a constant current.
摘要翻译：为了基本上抑制集成的恒定电压源的噪声，集成电路包括一个RC低通滤波器，其具有连接在外部芯片端子和外部接地之间的电容器，而其余的电路设置在集成的电路芯片。 RC低通滤波器的电阻连接到恒压源的恒定电压，RC低通滤波器的输出端连接到与发射极跟随器晶体管相连的晶体管的基极，如达林顿电路。电源电压从发射极跟随器晶体管的发射极获得。通过第二个电阻由RC低通滤波器的输出驱动的恒流源用作恒定电流的吸收器。

40. 发明授权

US4771226A Voltage regulator for low voltage, discharging direct current power source 失效
标题翻译：低压稳压器，直流电源放电
公开(公告)号：US4771226A
公开(公告)日：1988-09-13
申请号：US11032
申请日：1987-02-05
申请人： Byron Jones
发明人： Byron Jones
IPC分类号： G05F1/565 , G05F5/08
CPC分类号： G05F1/565
摘要： A voltage regulator powered by an electrical power source having a discharging voltage characteristic and regulating the voltage applied to an electrical load from the power source includes a stable reference voltage source, a sensor for sensing the voltage applied to the load, an error signal generator for generating an error signal related to the difference between the sensed and reference voltages, and a voltage control connected in series with the electrical load and responding to the error signal to control the voltage applied to the load as the power source discharges. The invention is particularly useful when the power source is a single cell battery and the load is a direct current motor. Embodiments of the invention may apply a substantially constant or an increasing voltage to a load as the source voltage declines according to its discharge characteristic. Embodiments of apparatus according to the invention may be conveniently and economically built using commercially available integrated circuits and transistors.
摘要翻译：由具有放电电压特性并调节从电源施加到电负载的电压供电的电压调节器包括稳定的参考电压源，用于感测施加到负载的电压的传感器，用于产生与感测和参考电压之间的差异相关的误差信号，以及与电负载串联连接的电压控制，并响应于误差信号，以控制当电源放电时施加到负载的电压。当电源是单电池并且负载是直流电动机时，本发明特别有用。当源电压根据其放电特性而下降时，本发明的实施例可以对负载施加基本上恒定的或增加的电压。根据本发明的设备的实施例可以使用市售的集成电路和晶体管方便和经济地构建。

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