公开(公告)号：US20160035644A1

公开(公告)日：2016-02-04

申请号：US14630239

申请日：2015-02-24

Applicant: LINEAR TECHNOLOGY CORPORATION

Inventor： Edward William Olsen ,  Leonard Shtargot ,  David Roy Ng ,  Jeffrey Kingan Witt

IPC: H01L23/367 ,  H01L23/48 ,  H01L25/065 ,  H01L23/31 ,  H01L23/00

CPC classification number: H01L23/3675 ,  H01L21/268 ,  H01L21/2855 ,  H01L21/2885 ,  H01L21/3105 ,  H01L21/486 ,  H01L21/56 ,  H01L21/76802 ,  H01L21/76879 ,  H01L23/3107 ,  H01L23/36 ,  H01L23/3736 ,  H01L23/4334 ,  H01L23/481 ,  H01L23/49827 ,  H01L23/49861 ,  H01L23/5384 ,  H01L23/5389 ,  H01L24/19 ,  H01L24/24 ,  H01L24/32 ,  H01L24/82 ,  H01L24/83 ,  H01L2224/04105 ,  H01L2224/16245 ,  H01L2224/19 ,  H01L2224/29111 ,  H01L2224/2912 ,  H01L2224/2919 ,  H01L2224/32245 ,  H01L2224/73253 ,  H01L2224/73267 ,  H01L2224/83005 ,  H01L2224/83801 ,  H01L2224/8385 ,  H01L2924/01029 ,  H01L2924/10253 ,  H01L2924/14

Abstract: An integrated circuit package may include a semiconductor die, a heat spreader, and encapsulation material. The semiconductor die may contain an electronic circuit and exposed electrical connections to the electronic circuit. The heat spreader may be thermally-conductive and may have a first outer surface and a second outer surface substantially parallel to the first outer surface. The first outer surface may be affixed to all portions of a silicon side of the semiconductor die in a thermally-conductive manner. The encapsulation material may be non-electrically conductive and may completely encapsulate the semiconductor die and the heat spreader, except for the second surface of the heat spreader. The second surface of the heat spreader may be solderable and may form part of an exterior surface of the integrated circuit package.

Abstract translation: 集成电路封装可以包括半导体管芯，散热器和封装材料。 半导体管芯可以包含电子电路和暴露的电连接到电子电路。 散热器可以是导热的并且可以具有基本上平行于第一外表面的第一外表面和第二外表面。 第一外表面可以以导热方式固定到半导体管芯的硅侧的所有部分。 除了散热器的第二表面之外，封装材料可以是不导电的，并且可以完全封装半导体管芯和散热器。 散热器的第二表面可以是可焊接的并且可以形成集成电路封装的外表面的一部分。

公开(公告)号：USRE45798E1

公开(公告)日：2015-11-10

申请号：US14473745

申请日：2014-08-29

Applicant: LINEAR TECHNOLOGY CORPORATION

Inventor： David M. Thomas ,  Alfio Zanchi

IPC: H03M1/20 ,  H04B17/10

CPC classification number: H04B17/102 ,  H03M1/0673 ,  H03M1/74

Abstract: Circuits and methods for converting a signal from analog to digital. A random number generator provides a random number to a memory. The memory is preconfigured to include codes of predetermined digital to analog (DAC) configurations that provide the maximum amount of DAC gradient suppression. At least one Flash reference generation DAC (FRGD) has an input coupled to the memory unit and an output providing a reference voltage level for its respective Flash comparator. The Flash comparators compare the analog input signal to their respective reference voltage and provide a digital output signal based on the comparison.

Abstract translation: 用于将信号从模拟转换成数字的电路和方法。 随机数生成器为存储器提供随机数。 存储器被预配置为包括提供DAC梯度抑制的最大量的预定数模（DAC）配置的代码。 至少一个闪存参考生成DAC（FRGD）具有耦合到存储器单元的输入和为其各自的闪存比较器提供参考电压电平的输出。 闪存比较器将模拟输入信号与其各自的参考电压进行比较，并根据比较提供数字输出信号。

公开(公告)号：US09176163B2

公开(公告)日：2015-11-03

申请号：US13448075

申请日：2012-04-16

Applicant: Jeffrey Lynn Heath ,  Harry Joseph Kleeburg ,  Heath Dixon Stewart

Inventor： Jeffrey Lynn Heath ,  Harry Joseph Kleeburg ,  Heath Dixon Stewart

IPC: G01F1/00 ,  G01P5/10 ,  G01F1/688 ,  G01F1/698

CPC classification number: G01P5/02 ,  G01F1/688 ,  G01F1/698 ,  G01P1/00 ,  G01P5/10

Abstract: An anemometer and method for analyzing fluid flow is described. In one embodiment, a transistor sensor is heated by applying power to cause its base-emitter junction to rise from an ambient first temperature to a second temperature. The power is removed, and the Vbe is measured at intervals as the junction cools. The Vbe equates to a temperature of the junction. The temperature exponentially decreases, and the time constant of the decay corresponds to the fluid flow velocity. A best fit curve analysis is performed on the temperature decay curve, and the time constant of the exponential decay is derived by a data processor. A transfer function correlates the time constant to the fluid flow velocity. The transistor is thermally coupled to a metal rod heat sink extending from the package, and the characteristics of the rod are controlled to adjust the performance of the anemometer.

Abstract translation: 描述了用于分析流体流动的风速计和方法。 在一个实施例中，通过施加功率来加热晶体管传感器，以使其基极 - 发射极结从环境温度升至第二温度。 功率被去除，并且Vbe在接头冷却时间隔测量。 Vbe等于交界处的温度。 温度指数下降，衰减的时间常数对应于流体流速。 对温度衰减曲线进行最佳拟合曲线分析，数据处理器得出指数衰减的时间常数。 传递函数将时间常数与流体流速相关联。 晶体管热耦合到从封装延伸的金属棒散热器，并且控制棒的特性以调节风速计的性能。

公开(公告)号：US09106202B2

公开(公告)日：2015-08-11

申请号：US14189652

申请日：2014-02-25

Applicant: Linear Technology Corporation

Inventor： Petrus M. Stroet

IPC: H03H7/48 ,  H03H7/21 ,  H04B15/02

CPC classification number: H03H7/21 ,  H04B15/02

Abstract: A poly-phase filter receives inphase input signals I and Ī and quadrature input signals Q and Q, and provides inphase output signals Iout and Iout and quadrature output signals Qout and Qout. The capacitance of each variable capacitor connected to the terminals providing inphase output signals Iout and Iout is and the capacitance of each variable capacitor connected to the terminals providing quadrature output signals Qout and Qout, are different in value, and preferably by twice a predetermined value. This is because adjustment to the capacitance values may be made to each set of variable capacitors by the predetermined value.

Abstract translation: 多相滤波器接收同相输入信号I和Ī和正交输入信号Q和Q，并提供同相输出信号Iout和Iout以及正交输出信号Qout和Qout。 连接到提供同相输出信号Iout和Iout的端子的每个可变电容器的电容是连接到提供正交输出信号Qout和Qout的端子的每个可变电容器的电容值，并且优选地是预定值的两倍。 这是因为可以通过预定值对每组可变电容器调整电容值。

公开(公告)号：US09104418B2

公开(公告)日：2015-08-11

申请号：US14526271

申请日：2014-10-28

Applicant: DUST NETWORKS, INC.

Inventor： Brett Warneke ,  Maxim Moiseev

IPC: G06F1/32 ,  H04W52/02 ,  G06F9/44 ,  H03L7/18 ,  G06F9/445

CPC classification number: G06F1/3243 ,  G06F1/12 ,  G06F1/14 ,  G06F1/3234 ,  G06F1/3237 ,  G06F1/3287 ,  G06F1/3293 ,  G06F9/44505 ,  H03L5/02 ,  H03L7/18 ,  H04B1/0003 ,  H04W52/0203 ,  H04W52/0209 ,  Y02D10/171 ,  Y02D70/00 ,  Y02D70/122 ,  Y02D70/144 ,  Y02D70/22

Abstract: A device reduces its energy consumption using a relatively lower frequency and lower power secondary oscillator to maintain timing information when a higher frequency and higher power primary oscillator is inactivated. The secondary oscillator maintains timing information at a higher resolution than the period of the oscillator, so as to conserve synchronization when the higher frequency, higher power primary oscillator is inactivated. In some embodiments, a microsequencer is programmably configured to control an integrated radio receiver and transmitter using less power than an associated microprocessor would use to perform the same functions. In other embodiments, flexible event timing facilitates the merging of wake-up events to reduce the energy consumed by wake-up operations in the device.

公开(公告)号：US20150207423A1

公开(公告)日：2015-07-23

申请号：US14160831

申请日：2014-01-22

Applicant: Linear Technology Corporation

Inventor： Niranjan Ganesh Kumar

IPC: H02M3/335 ,  H02M1/08

CPC classification number: H02M3/33592 ,  H02M3/33553 ,  H02M2001/0009 ,  H02M2001/0032 ,  Y02B70/1475 ,  Y02B70/16

Abstract: A forward converter has a primary side containing a PWM controller for controlling switching of a power switch and has a secondary side coupled to the primary side via a transformer. The secondary side includes a forward transistor and a catch transistor. A secondary side switch controller controls switching of the forward transistor and the catch transistor without communication from the primary side. The secondary side switch controller detects the rising and falling of the voltages at the ends of the secondary winding to control the switching of the forward and catch transistors. A delay locked loop (DLL) is provided in the secondary side switch controller that turns on the catch transistor when the power switch is turned off and turns off the catch transistor at a predetermined time before the power switch is turned on. A separate circuit controls the catch transistor during a discontinuous mode.

Abstract translation: 正向转换器具有包含用于控制功率开关的开关的PWM控制器的初级侧，并且具有经由变压器耦合到初级侧的次级侧。 次级侧包括正向晶体管和捕获晶体管。 次级侧开关控制器控制正向晶体管和捕获晶体管的开关，而不与初级侧通信。 次级侧开关控制器检测次级绕组端部的电压的上升和下降以控制正向和捕获晶体管的切换。 在次级侧开关控制器中提供延迟锁定环（DLL），其在电源开关断开时接通捕获晶体管，并且在电源开关接通之前的预定时间关闭捕获晶体管。 单独的电路在不连续模式期间控制捕获晶体管。

公开(公告)号：US09078317B1

公开(公告)日：2015-07-07

申请号：US14332830

申请日：2014-07-16

Applicant: Linear Technology Corporation

Inventor： Keith D. Szolusha

IPC: H05B37/02 ,  H05B33/08

CPC classification number: H05B33/0815

Abstract: An LED driver uses a positive-to-floating boost converter topology to generate a negative voltage −Vee relative to ground. The converter receives an input voltage. Vin from a power supply. One end of an output inductor is coupled to ground, and the other end of the inductor is coupled between a highside switch and a low side switch. The bottom terminal of the lowside switch generates −Vee. The anode end of an LED string is coupled to Vin and the cathode end is coupled to −Vee. The converter detects the LED current and regulates the switching duty cycle so that the LED current is equal to a target current. This is more efficient than coupling the anode end of an LED string to ground and the cathode end to −Vee. A conventional buck controller IC may be used.

Abstract translation: LED驱动器使用正浮置升压转换器拓扑来产生相对于地的负电压。 转换器接收输入电压。 Vin从电源。 输出电感器的一端耦合到地，并且电感器的另一端耦合在高侧开关和低侧开关之间。 低端开关的底端产生-Vee。 LED串的阳极端耦合到Vin，阴极端耦合到-Vee。 转换器检测LED电流并调节开关占空比，使LED电流等于目标电流。 这比将LED串的阳极端耦合到地和阴极端更有效。 可以使用传统的降压控制器IC。

公开(公告)号：US09072147B2

公开(公告)日：2015-06-30

申请号：US14264518

申请日：2014-04-29

Applicant: Linear Technology Corporation

Inventor： Keith D. Szolusha ,  Joshua W. Caldwell ,  Bryan Legates

IPC: H05B33/08 ,  H05B41/28

CPC classification number: H05B33/0851 ,  H05B33/0809 ,  H05B33/0815 ,  H05B33/0818 ,  H05B41/28 ,  Y02B20/346 ,  Y02B20/347

Abstract: In a method for controlling a current regulator for dimming an LED load, a dimming signal has a duty cycle that controls the LED ON-time and LED OFF time at a fixed frequency. The regulator is controlled by the dimming signal to only supply current to the LED load during the LED ON-time. The regulator includes an inductor. The inductor current at the end of an ON-time is detected and its value is stored. During the OFF-time, the inductor is pre-charged to the current level matching the stored value, while the regulator's feedback loop is frozen during the OFF-time to not change its feedback control signal. Upon the next ON-time, the regulator begins supplying current to the LED load with the pre-charged inductor current, so there is no initial decrease in the delivered LED current. Therefore, the current pulse magnitudes are constant even with very low duty cycles.

Abstract translation: 在用于控制用于调光LED负载的电流调节器的方法中，调光信号具有以固定频率控制LED接通时间和LED关闭时间的占空比。 调光器由调光信号控制，以便在LED接通时间期间仅向LED负载提供电流。 调节器包括电感器。 检测接通时间结束时的电感电流，并存储其值。 在关断期间，电感器预充电到与存储值匹配的电流电平，而稳压器的反馈环路在关断时间冻结，不改变其反馈控制信号。 在下一个导通时间后，调节器开始向预充电电感电流的LED负载供电，因此LED电流的传送没有初始减少。 因此，即使在非常低的占空比下，当前脉冲幅度也是恒定的。

公开(公告)号：US09041254B2

公开(公告)日：2015-05-26

申请号：US13325959

申请日：2011-12-14

Applicant: Eko Tan Lisuwandi ,  Thilani Imanthika Dissanayake Bogoda

Inventor： Eko Tan Lisuwandi ,  Thilani Imanthika Dissanayake Bogoda

IPC: H01F27/42 ,  H02J5/00

CPC classification number: H02J50/12 ,  H02J5/005 ,  H02J7/025 ,  Y10T307/43

Abstract: A circuit and method for wirelessly coupling an electrical energy between an electrical energy source and at least one load is provided. The circuit comprises a primary unit and at least one secondary unit. The primary unit includes an input node for receiving an input voltage produced by the energy source; a transmitter circuit including a transmitter coil configured to generate an electromagnetic field; and a regulator. The regulator is configured to sense a current consumption of the primary unit, determine a gradient of the current consumption with respect to different input voltages, and determine an optimal input voltage based on the gradient. The at least one secondary unit comprises a receiver circuit and a load. The receiver unit includes a coil that wirelessly and inductively couples with the electromagnetic field of the primary unit to receive power therefrom. The receiver unit further includes a regulator circuit configured to provide a constant power to an output node.

Abstract translation: 提供了一种用于在电能源和至少一个负载之间无线耦合电能的电路和方法。 电路包括主单元和至少一个次单元。 主单元包括用于接收由能量源产生的输入电压的输入节点; 发射机电路，包括被配置为产生电磁场的发射器线圈; 和监管机构。 调节器被配置为感测主单元的电流消耗，确定相对于不同输入电压的电流消耗的梯度，并且基于该梯度确定最佳输入电压。 所述至少一个次级单元包括接收器电路和负载。 接收器单元包括线圈，其与主单元的电磁场无线地并且感应地耦合以从其接收功率。 接收器单元还包括调节器电路，其被配置为向输出节点提供恒定的功率。

公开(公告)号：US09026809B2

公开(公告)日：2015-05-05

申请号：US13668943

申请日：2012-11-05

Applicant: Linear Technology Corporation

Inventor： Michael Paul

IPC: G06F1/26 ,  H04L12/10 ,  H02H11/00

CPC classification number: G06F1/26 ,  H02H11/002 ,  H04L12/10

Abstract: A system for combining power to a load in a Powered Device (PD) using Power Over Ethernet (PoE) receives power from a first channel and power from a second channel, via four pairs of wires. A MOSFET bridge for each channel is initially disabled. A bridge controller IC simultaneously senses all the voltages and controls the bridge MOSFETs. The bridge controller IC also contains a first PoE handshaking circuit. A second PoE handshaking circuit is external to the bridge controller IC and operates independently. The body diodes in the MOSFET bridge initially couple the first channel to the second PoE handshaking circuit while isolating the second channel. The second handshaking circuit then couples the first channel to the load. The first handshaking circuit then carries out a PoE handshaking routine for the second channel. Ultimately, the bridge controller controls the bridge MOSFETs to couple both channels to the load.

Abstract translation: 使用以太网供电（PoE）的动力设备（PD）中的负载组合电力的系统通过四对电线从第一通道接收电力并从第二通道接收电力。 最初禁用每个通道的MOSFET桥。 桥式控制器IC同时感测所有电压并控制桥式MOSFET。 桥接控制器IC还包含第一个PoE握手电路。 第二个PoE握手电路在桥接控制器IC的外部，独立运行。 MOSFET桥接器中的体二极管首先将第一通道耦合到第二PoE握手电路，同时隔离第二通道。 然后，第二握手电路将第一通道耦合到负载。 然后，第一握手电路对第二通道执行PoE握手程序。 最终，桥式控制器控制桥式MOSFET将两个通道耦合到负载。