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公开(公告)号：US5485109A
公开(公告)日：1996-01-16
申请号：US241505
申请日：1994-05-12
摘要： A three terminal control circuit for a low dropout voltage regulator having a PNP pass transistor is provided. The control circuit is capable of pulling the base-drive point down to a voltage of 3.0 volts or less to permit a current limiting resistor to be inserted between the base drive point and the base of the PNP pass transistor. The control circuit includes a pair of small-valued capacitors for providing stable operation with different output capacitors. The control circuit can also be used with p-channel FET pass transistors.
摘要翻译： 提供一种具有PNP传输晶体管的低压差稳压器的三端控制电路。 控制电路能够将基极驱动点拉低至3.0伏或更小的电压，以允许限流电阻器插入在PNP传输晶体管的基极驱动点和基极之间。 该控制电路包括一对小值电容器，用于提供与不同输出电容器的稳定操作。 控制电路也可以与p沟道FET传输晶体管一起使用。
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公开(公告)号：US4843302A
公开(公告)日：1989-06-27
申请号：US189479
申请日：1988-05-02
申请人： Robert C. Dobkin , Carl T. Nelson
发明人： Robert C. Dobkin , Carl T. Nelson
IPC分类号： G05F3/30
CPC分类号： G05F3/30 , Y10S323/907
摘要： A non-linear temperature correction circuit is provided which utilizes, in one embodiment, a pair of semiconductor elements such as a pair of transistors electrically connected to a common biasing current having a negative temperature coefficient and a negative temperature coefficient voltage is applied between the bases of the transistors. The output of one of the transistors is a non-linear output current which is non-linear with respect to temperature and where the output current has an inflection point.
摘要翻译： 提供一种非线性温度校正电路，其在一个实施例中利用一对半导体元件，例如一对晶体管，其电连接到具有负温度系数和负温度系数电压的公共偏置电流，在基极 的晶体管。 一个晶体管的输出是非线性输出电流，其相对于温度是非线性的，并且其中输出电流具有拐点。
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公开(公告)号：US5274323A
公开(公告)日：1993-12-28
申请号：US785483
申请日：1991-10-31
摘要： A three terminal control circuit for a low dropout voltage regulator having a PNP pass transistor is provided. The control circuit is capable of pulling the base drive point down to a voltage of 3.0 volts or less to permit a current limiting resistor to be inserted between the base drive point and the base of the PNP pass transistor. The control circuit includes a pair of small-valued capacitors for providing stable operation with different output capacitors. The control circuit can also be used with p-channel FET pass transistors.
摘要翻译： 提供一种具有PNP传输晶体管的低压差稳压器的三端控制电路。 控制电路能够将基极驱动点拉低至3.0伏或更小的电压，以允许限流电阻器插入在PNP传输晶体管的基极驱动点和基极之间。 该控制电路包括一对小值电容器，用于提供与不同输出电容器的稳定操作。 控制电路也可以与p沟道FET传输晶体管一起使用。
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4.发明授权Arrangement for cancelling the input bias current, at picoampere levels, in an integrated circuit 失效在集成电路中以微微安培级别取消输入偏置电流的布置
公开(公告)号：US4575685A
公开(公告)日：1986-03-11
申请号：US637389
申请日：1984-08-03
申请人： Robert C. Dobkin , George Erdi , Carl T. Nelson
发明人： Robert C. Dobkin , George Erdi , Carl T. Nelson
CPC分类号： H03F1/56 , H03F3/45479
摘要： An arrangement for cancelling the input bias current, at picoampere levels, in linear integrated circuits such as operational amplifiers, comparators, and the like is disclosed herein. This arrangement utilizes circuitry including a tracking transistor which is virtually independent of the presence or absence of leakage current in the overall integrated circuit, even at relatively high temperatures, for example 125.degree. C., where leakage current can be most significant.
摘要翻译： 本文公开了用于在诸如运算放大器，比较器等的线性集成电路中以微微安平级取消输入偏置电流的装置。 这种布置使用包括跟踪晶体管的电路，该跟踪晶体管实际上与整个集成电路中是否存在泄漏电流无关，即使在相对较高的温度（例如125℃）下，漏电流可能是最大的。
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5.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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公开(公告)号：US5334928A
公开(公告)日：1994-08-02
申请号：US98461
申请日：1993-07-27
摘要： A three terminal control circuit for a low dropout voltage regulator having a PNP pass transistor is provided. The control circuit is capable of pulling the base drive point down to a voltage of 3.0 volts or less to permit a current limiting resistor to be inserted between the base drive point and the base of the PNP pass transistor. The control circuit includes a pair of small-valued capacitors for providing stable operation with different output capacitors. The control circuit can also be used with p-channel FET pass transistors.
摘要翻译： 提供一种具有PNP传输晶体管的低压差稳压器的三端控制电路。 控制电路能够将基极驱动点拉低至3.0伏或更小的电压，以允许限流电阻器插入在PNP传输晶体管的基极驱动点和基极之间。 该控制电路包括一对小值电容器，用于提供与不同输出电容器的稳定操作。 控制电路也可以与p沟道FET传输晶体管一起使用。
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7.发明授权
公开(公告)号：US5589761A
公开(公告)日：1996-12-31
申请号：US472538
申请日：1995-06-07
申请人： Carl T. Nelson , Robert Essaff
发明人： Carl T. Nelson , Robert Essaff
IPC分类号： H01L27/04 , H01L21/822 , H02J1/10 , H02M1/00 , H02M1/36 , H02M3/155 , H02M3/335 , H03K17/00 , H03K17/04 , H03K17/042 , H03K17/0422 , H03K17/16 , H03K19/013 , G05F1/575
CPC分类号： H02M1/36 , H02M3/155 , H02M3/33507 , H03K17/04213 , H03K17/0422 , H02J2001/104 , H02M1/32 , H02M2001/009 , H03K2217/0036
摘要： A dual polarity voltage regulator circuit that is capable of regulating either positive or negative voltages is disclosed. The regulator circuitry of the present invention provides dual polarity regulation while requiring only one additional pin over a single polarity regulator. The present invention utilizes a single error amplifier, a negative feedback network, and an overshoot recovery circuit in providing dual polarity regulation. One advantage of the negative feedback network of the present invention is that the regulator circuit uses the same error amplifier (i.e., only one error amplifier) to regulate both positive and negative input voltages. The negative feedback network actively affects signals input into the error amplifier during negative regulation, but is essentially disabled during positive regulation. Thus, positive and negative voltage regulation are provided using a single error amplifier that retains its multiple functions (for example, oscillator frequency shifting, overshoot improvement and loop frequency compensation).
摘要翻译： 公开了能够调节正或负电压的双极性调压电路。 本发明的调节器电路提供双极性调节，同时在单个极性调节器上仅需要一个附加引脚。 本发明利用单误差放大器，负反馈网络和过冲恢复电路来提供双极性调节。 本发明的负反馈网络的一个优点是调节器电路使用相同的误差放大器（即，仅一个误差放大器）来调节正输入电压和负输入电压。 负反馈网络在负调节期间主动影响输入到误差放大器的信号，但在正调节期间基本上禁用。 因此，使用保持其多个功能的单个误差放大器（例如，振荡器频率偏移，过冲改善和环路频率补偿）来提供正和负电压调节。
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公开(公告)号：US5305192A
公开(公告)日：1994-04-19
申请号：US786718
申请日：1991-11-01
申请人： Anthony K. Bonte , Carl T. Nelson
发明人： Anthony K. Bonte , Carl T. Nelson
IPC分类号： H02M3/335
CPC分类号： H02M3/33507
摘要： Control circuits for a switching voltage regulator circuit which uses magnetic flux sensing are provided. These circuits can be used to improve output voltage regulation by reducing parasitic effects inherently present in magnetic flux-sensed feedback switching voltage regulator designs.
摘要翻译： 提供了使用磁通检测的开关稳压电路的控制电路。 这些电路可用于通过减少磁通量感测反馈开关电压调节器设计中固有地存在的寄生效应来改善输出电压调节。
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9.发明授权Apparatus and method using waveform shaping for reducing high frequency noise from switching inductive loads 失效使用波形整形降低开关感性负载的高频噪声的装置和方法
公开(公告)号：US5952817A
公开(公告)日：1999-09-14
申请号：US840017
申请日：1997-04-24
IPC分类号： H02M3/155 , H03K17/082 , H03K17/16 , G05F1/40 , H02T1/10
CPC分类号： H03K17/0826 , H03K17/16 , Y10T307/352
摘要： A low-noise switching regulator and a method for driving an inductive load, employing current slew control and voltage slew control, is provided. Open and closed loop embodiments, as well as first and higher order slewing, are also provided.
摘要翻译： 提供了采用电流转换控制和电压转换控制的低噪声开关调节器和用于驱动感性负载的方法。 还提供了开环和闭环实施例，以及第一和更高阶回转。
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10.发明授权Circuits and methods for increasing switch turn-off speed in high-speed switching regulator drive circuits 失效在高速开关稳压器驱动电路中增加开关截止速度的电路和方法
公开(公告)号：US5668493A
公开(公告)日：1997-09-16
申请号：US488071
申请日：1995-06-07
申请人： Carl T. Nelson , Robert Essaff
发明人： Carl T. Nelson , Robert Essaff
IPC分类号： H01L27/04 , H01L21/822 , H02J1/10 , H02M1/00 , H02M1/36 , H02M3/155 , H02M3/335 , H03K17/00 , H03K17/04 , H03K17/042 , H03K17/0422 , H03K17/16 , H03K19/013 , H03K5/08
CPC分类号： H02M1/36 , H02M3/155 , H02M3/33507 , H03K17/04213 , H03K17/0422 , H02J2001/104 , H02M1/32 , H02M2001/009 , H03K2217/0036
摘要： Circuits and methods are provided for increasing the turn-off switching speed of a high-speed integrated circuit, bipolar switching regulator. The regulator The circuit runs at megahertz frequencies, yet is efficient as previously available bipolar integrated circuit switching regulators operating at much lower frequencies. The increased speed switch turn-off circuitry prevents the switch from spending too much time in a high power state (which would slow the switch down), increases the stability of the switch as compared with previously known designs. In a preferred embodiment, the circuitry includes a PNP transistor and a diode-connected transistor with their base-emitter circuits coupled to form a loop with the base-emitter circuit of a NPN transistor and the base-collector circuit of the switch to limit the on state voltage of the switch and control its depth of saturation. A capacitor is connected across the diode-connected transistor to reduce instabilities due to ringing caused by delays in the feedback loop.
摘要翻译： 提供电路和方法来提高高速集成电路，双极开关调节器的关断开关速度。 调节器电路以兆赫兹频率运行，但效率如以前提供的双极型集成电路开关稳压器的工作频率低得多。 增加的速度开关关断电路防止开关在高功率状态下花费太多时间（这将减慢开关减小），与先前已知的设计相比，增加了开关的稳定性。 在优选实施例中，电路包括PNP晶体管和二极管连接的晶体管，其基极 - 发射极电路被耦合以与NPN晶体管的基极 - 发射极电路和开关的基极 - 集电极电路形成环路，以限制 开关的状态电压并控制其饱和度。 电容器连接在二极管连接的晶体管上，以减少由于反馈回路中的延迟引起的振铃引起的不稳定性。
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