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91. 发明授权

US07579816B2 Single feedback input for regulation at both positive and negative voltage levels 有权
标题翻译：单反馈输入用于正负电压电平的调节
公开(公告)号：US07579816B2
公开(公告)日：2009-08-25
申请号：US11348367
申请日：2006-02-07
申请人： Albert Mien-Yee Wu
发明人： Albert Mien-Yee Wu
IPC分类号： G05F1/00
CPC分类号： H02M3/157
摘要： A voltage regulator provides a regulated output load voltage at either a positive level or an inverted level relative to an input supply voltage. A switching circuit and control circuit are formed on an integrated circuit having a single pin for coupling to regulator feedback signal. The feedback signal is applied directly to the feedback pin during both positive voltage level regulation and inverted voltage level regulation. The feedback signal may be produced by a feedback circuit comprising an impedance element formed in the integrated circuit.
摘要翻译：电压调节器提供相对于输入电源电压处于正电平或反相电平的稳压输出负载电压。开关电路和控制电路形成在具有用于耦合到调节器反馈信号的单个引脚的集成电路上。在正电压电平调节和反相电压调节期间，反馈信号直接施加到反馈引脚。反馈信号可以由包括在集成电路中形成的阻抗元件的反馈电路产生。

92. 发明授权

US07548041B2 Power management circuit and methodology for battery-powered systems 有权
标题翻译：电池供电系统的电源管理电路和方法
公开(公告)号：US07548041B2
公开(公告)日：2009-06-16
申请号：US11024473
申请日：2004-12-30
申请人： Roger A. Zemke , David B. Bell
发明人： Roger A. Zemke , David B. Bell
IPC分类号： H02J7/00
CPC分类号： H02J7/0068
摘要： A power management system including a battery-powered application, in which an input current is supplied by a source of current that may be a current-constrained source, such as a USB port, to a battery for charging the battery and to an application load. Battery charging current is supplied to the battery for a period of time based on magnitude of battery charging current, so that charging current of lesser magnitude is applied to the battery for a greater period of time. In accord with one implementation, battery charging current is determined by monitoring the difference between a programmed charging current, dependent on battery type, and magnitude of current used by the load. Change of battery charging current due to voltage mode charging, when charge current begins to drop as the battery approaches full charge, is detected, and in response, the charging period is set to a fixed charging period based on the battery.
摘要翻译：一种电源管理系统，包括电池供电的应用，其中输入电流由可能是电流受限的源（例如USB端口）的电流源提供给用于对电池充电的电池和应用负载。基于电池充电电流的大小，电池充电电流被提供给电池一段时间，使得较小的充电电流被更长时间地应用于电池。根据一个实施方案，通过监视编程的充电电流（取决于电池类型）和负载所使用的电流的大小之间的差异来确定电池充电电流。检测到当电池接近满充电时充电电流开始下降时由于电压模式充电而导致的电池充电电流的变化，作为响应，基于电池将充电期间设定为固定的充电期间。

93. 发明授权

US07545173B2 Level shift delay equalization circuit and methodology 有权
标题翻译：电平移位延迟均衡电路和方法
公开(公告)号：US07545173B2
公开(公告)日：2009-06-09
申请号：US11315146
申请日：2005-12-23
申请人： Burt Lee Price
发明人： Burt Lee Price
IPC分类号： H03K19/0175
CPC分类号： H03K19/0013 , H03K19/00323
摘要： Transition delays in a level shift circuit are equalized by generating a first signal related to the state of the input signal, a second signal inversely related to the state of the input signal, and a third signal that is reciprocal to the second signal. Upon transition of the input signal from a high state to a low state, the third signal is selected for controlling the output until the first signal attains a high state. The first signal is selected for controlling the output when it has reached a high state after the input signal transition. The first signal remains selected upon transition of the input signal from a high state to a low state. Thus, output delays are equalized and reduced to the shortest delay.
摘要翻译：通过产生与输入信号的状态相关的第一信号，与输入信号的状态相反的第二信号和与第二信号相反的第三信号，使电平移位电路中的转换延迟相等。在将输入信号从高状态转换到低状态时，选择第三信号以控制输出，直到第一信号达到高状态。选择第一个信号以在输入信号转换后达到高电平状态时控制输出。当输入信号从高状态转变到低状态时，第一信号保持选择。因此，输出延迟被均衡并且减小到最短的延迟。

94. 发明申请

US20090121770A1 METHOD FOR CLAMPING A SEMICONDUCTOR REGION AT OR NEAR GROUND 审中-公开
标题翻译：用于夹紧或接近半导体区域的方法
公开(公告)号：US20090121770A1
公开(公告)日：2009-05-14
申请号：US12033600
申请日：2008-02-19
申请人： Samuel Patrick Rankin , Robert C. Dobkin
发明人： Samuel Patrick Rankin , Robert C. Dobkin
IPC分类号： H03K5/08
CPC分类号： G05F3/265 , H01L27/0248
摘要： A clamping circuit clamps a voltage received by an n-type semiconductor region without using a Schottky transistor. The clamping circuit includes a current mirror as well as first and second bipolar transistors. The current mirror receives a first current and supplies a second current in response. The first current is received by the first bipolar transistor, and the second current is received by the second bipolar transistor. The difference between the base-emitter junction voltages of the first and second bipolar transistors, in part, defines the voltage at which the n-type region is clamped. To start-up the circuit properly, current is withdrawn from the base/gate terminals of the transistors disposed in the current mirror. The circuit optionally includes a pair of cross-coupled transistors to reduce the output impedance and improve the power supply rejection ratio.
摘要翻译：钳位电路钳位由n型半导体区域接收的电压，而不使用肖特基晶体管。钳位电路包括电流镜以及第一和第二双极晶体管。电流镜接收第一电流并提供响应的第二电流。第一电流由第一双极晶体管接收，第二电流由第二双极晶体管接收。第一和第二双极晶体管的基极 - 发射极结电压之间的差异部分地限定了n型区域被钳位的电压。为了正确启动电路，从设置在电流反射镜中的晶体管的基极/栅极端子取出电流。该电路可选地包括一对交叉耦合的晶体管，以减少输出阻抗并提高电源抑制比。

95. 发明授权

US07502723B1 Asymmetric minor hysteresis loop model and circuit simulator including the same 有权
标题翻译：非对称小磁滞回线模型和电路模拟器包括相同
公开(公告)号：US07502723B1
公开(公告)日：2009-03-10
申请号：US11216008
申请日：2005-09-01
申请人： Michael Thomas Engelhardt
发明人： Michael Thomas Engelhardt
IPC分类号： G06F7/60 , G06F17/50
CPC分类号： G06F17/5036
摘要： The present disclosure relates to simulating inductors wound on a ferromagnetic core as the magnetic material saturates. In one application, the present disclosure is advantageously used to model the asymmetric minor hysteresis loops commonly traversed by the output inductor of a switch mode power supply. An advantage of the subject matter of the disclosure is that it allows practical nonlinear inductors to be modeled in a computationally lightweight manner without conventional non-physical behavior under asymmetric minor hysteresis loop traversals. The disclosure is also conveniently applicable to practical ferromagnetic core materials because, in one particular implementation, the input parameters to the model are the core's coercive force (Hc), remnant magnetization flux density (Br), and saturation flux density (Bs).
摘要翻译：本公开涉及当磁性材料饱和时模拟缠绕在铁磁芯上的电感器。在一个应用中，本公开有利地用于对通常由开关模式电源的输出电感器穿过的非对称次级磁滞回线进行建模。本公开的主题的优点在于，其允许在非对称的小磁滞回线遍历下，以计算轻量级的方式对实际的非线性电感进行建模而无需常规的非物理行为。本发明也适用于实际的铁磁芯材料，因为在一个具体实施方式中，模型的输入参数是核心的矫顽力（Hc），剩余磁通密度（Br）和饱和磁通密度（Bs）。

96. 发明申请

US20080297122A1 Advanced current-mode control for switched regulators 有权
标题翻译：开关稳压器的高级电流模式控制
公开(公告)号：US20080297122A1
公开(公告)日：2008-12-04
申请号：US11802960
申请日：2007-05-29
申请人： Xunwei Zhou , Randy G. Flatness
发明人： Xunwei Zhou , Randy G. Flatness
IPC分类号： G05F1/10
CPC分类号： H02M3/156 , H02M3/1588 , Y02B70/1466
摘要： A voltage regulator includes an input connectable to a voltage source and an output connectable to a load. The voltage regulator includes an inductor coupled to the output, a switch between the input and the inductor, and a current control loop configured to control the duty cycle of the switch to regulate voltage at the output, wherein the duty cycle being based on both a peak and valley threshold level of current flowing through the inductor.
摘要翻译：电压调节器包括可连接到电压源的输入端和可连接到负载的输出端。电压调节器包括耦合到输出的电感器，在输入端和电感器之间的开关，以及电流控制回路，其被配置为控制开关的占空比以调节输出端的电压，其中占空比基于峰值和谷值电流流经电感的电流。

97. 发明申请

US20080231257A1 Method and apparatus for measuring the voltage of a power source 有权
标题翻译：用于测量电源电压的方法和装置
公开(公告)号：US20080231257A1
公开(公告)日：2008-09-25
申请号：US11717126
申请日：2007-03-13
申请人： James Michael Williams
发明人： James Michael Williams
IPC分类号： G01R15/18
CPC分类号： G01R19/2506 , G01R31/362 , G01R31/3658 , G01R31/40
摘要： Various concepts and techniques are disclosed for measuring the voltage of a power source. An apparatus includes a voltage metering circuit and a transformer having a first winding coupled to the voltage metering circuit and a second winding for coupling to a power source.
摘要翻译：公开了用于测量电源电压的各种概念和技术。一种装置包括电压计量电路和具有耦合到电压计量电路的第一绕组和用于耦合到电源的第二绕组的变压器。

98. 发明授权

US07417509B2 Spread spectrum modulation of a clock signal for reduction of electromagnetic interference 有权
标题翻译：扩展时钟信号的频谱调制，以减少电磁干扰
公开(公告)号：US07417509B2
公开(公告)日：2008-08-26
申请号：US11366590
申请日：2006-03-03
申请人： Michael Alfred Kultgen
发明人： Michael Alfred Kultgen
IPC分类号： H03L7/00
CPC分类号： H04B15/04
摘要： A spread spectrum frequency modulated oscillator circuit usable as a clock comprises a reference component such as a resistor, a voltage controlled oscillator and a first circuit coupled to the reference component and voltage controlled oscillator and configured to supply a first control signal to the oscillator to cause the oscillator to oscillate at a frequency corresponding to a value of the reference component. A second circuit configured to supply a random signal to the oscillator causes the frequency of the oscillator to dither. To cause the oscillator to exhibit random frequency modulation that is fast enough to reduce EMI but not too fast for controlled devices such as switching regulators to track, the oscillator includes a third circuit configured to control (1) a rate of change of the oscillator frequency such that the rate of change is a fixed percentage of the oscillator frequency, and (2) an amount of frequency change in the oscillator frequency such that the amount of frequency change is a fixed percentage of the oscillator frequency.
摘要翻译：可用作时钟的扩谱频率调制振荡器电路包括诸如电阻器，压控振荡器和耦合到参考部件和压控振荡器的第一电路的参考部件，并且被配置为向振荡器提供第一控制信号以引起振荡器以对应于参考分量的值的频率振荡。被配置为向振荡器提供随机信号的第二电路导致振荡器的频率抖动。为了使振荡器呈现出足够快的随机频率调制以减少EMI，但对于诸如开关稳压器之间的受控设备来说不太快，振荡器包括被配置为控制（1）振荡器频率的变化率的第三电路使得变化率是振荡器频率的固定百分比，和（2）振荡器频率的频率变化量，使得频率变化量是振荡器频率的固定百分比。

99. 发明授权

US07414561B1 Gradient insensitive split-core digital to analog converter 有权
标题翻译：梯度不敏感的分裂芯数转换器
公开(公告)号：US07414561B1
公开(公告)日：2008-08-19
申请号：US11704441
申请日：2007-02-08
申请人： James Lee Brubaker
发明人： James Lee Brubaker
IPC分类号： H03M1/68
CPC分类号： H03M1/0682 , H03M1/682 , H03M1/747 , H03M1/765
摘要： Digital to analog converter circuits and methods are provided for producing an analog output voltage indicative of a digital input signal with at least partial insensitivity to error gradients. Described are split-core resistive elements, which include a plurality of one-dimensional or multi-dimensional resistive strings, that may be used to reduce or substantially eliminate the effects that error gradients have on the linearity of the analog output voltages of a resistive string or interpolating amplifier DACs. The resistor strings that make up the split-core resistive elements are configured in such a manner that combining respective output voltages from each of the resistor strings results in an analog output voltage that is at least partially insensitive to the effects of error gradients.
摘要翻译：提供数模转换器电路和方法用于产生表示对错误梯度至少部分不敏感的数字输入信号的模拟输出电压。描述的是分离电阻元件，其包括多个一维或多维电阻串，其可用于减少或基本上消除误差梯度对电阻串的模拟输出电压的线性的影响或内插放大器DAC。构成分离电阻元件的电阻串以这样的方式配置，即组合来自每个电阻器串的各个输出电压导致对误差梯度的影响至少部分不敏感的模拟输出电压。

100. 发明授权

US07414302B2 Flashless lead frame with horizontal singulation 有权
标题翻译：无闪烁引线框架，水平分割
公开(公告)号：US07414302B2
公开(公告)日：2008-08-19
申请号：US11500359
申请日：2006-08-08
申请人： David Pruitt
发明人： David Pruitt
IPC分类号： H01L23/495 , H01L23/48
CPC分类号： H01L23/49503 , H01L21/4842 , H01L2924/0002 , H01L2924/00
摘要： A lead frame is configured for use with a singulation apparatus that eliminates flash. A die pad is attached to sides of the frame by tie bars and peripheral portions. The peripheral portions have cutout sections defining openings that are bridged by lead frame segments. The apparatus applies a downward force to the lead frame segments and translates the downward force to a horizontal force applied to the tie bars. The singulation process confines movement of the lead frame metal to within the plane of the lead frame.
摘要翻译：引线框架被配置为与消除闪光的单片设备一起使用。模具垫通过连杆和周边部分附接到框架的侧面。周边部分具有限定由引线框架段桥接的开口的切口部分。该装置向引线框架段施加向下的力并将向下的力平移到施加到连接杆的水平力。分割过程将引线框架金属的运动限制在引线框架的平面内。

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