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51. 发明专利

JP2006136190A Regulator, method and circuit for controlling it, and method of adjusting voltage impressed to load terminal 审中-公开
标题翻译：用于控制其的调节器，方法和电路以及调整加载端子的电压的方法
公开(公告)号：JP2006136190A
公开(公告)日：2006-05-25
申请号：JP2005233131
申请日：2005-08-11
申请人： Linear Technol Corp , リニアーテクノロジーコーポレイションLinear Technology Corporation
发明人： CHEUNG EUGENE LAU , HOUK TALBOOT MEAD
IPC分类号： H02M3/155
CPC分类号： H02M3/156
摘要： PROBLEM TO BE SOLVED: To effect pulse width modulation that connects a load output terminal to a power supply terminal.
SOLUTION: In response to a first level of a pulse width modulated signal, a load is disconnected from the power supply terminal, a steady-state load voltage is preserved on a capacitor connected between the load output terminal and the power supply terminal, and steady-state load current information is held on a capacitor within a feedback loop. In response to a second level of the pulse width modulated signal, the load is reconnected to the power supply terminal, and a load voltage and a current instantaneously resume at their correct steady-state values.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：实现将负载输出端子连接到电源端子的脉宽调制。解决方案：响应于脉冲宽度调制信号的第一级，负载与电源端子断开，在连接在负载输出端子和电源端子之间的电容器上保持稳态负载电压并且稳态负载电流信息被保持在反馈回路内的电容器上。响应于脉冲宽度调制信号的第二电平，负载被重新连接到电源端子，并且负载电压和电流在其正确的稳态值瞬时恢复。版权所有（C）2006，JPO＆NCIPI

52. 发明专利

JP5377676B2 High linearity digital variable gain amplifier 有权
公开(公告)号：JP5377676B2
公开(公告)日：2013-12-25
申请号：JP2012006257
申请日：2012-01-16
申请人：リニアーテクノロジーコーポレイションLinear Technology Corporation
发明人：セレメタドリン
IPC分类号： H03F1/22 , H03G3/10 , H03F1/32 , H03F3/343 , H03G1/00
CPC分类号： H03F3/45103 , H03F1/22 , H03F1/3211 , H03F1/34 , H03F3/211 , H03F3/3432 , H03F3/4508 , H03F3/45197 , H03F2203/45024 , H03F2203/45031 , H03F2203/45056 , H03F2203/45134 , H03F2203/45221 , H03F2203/45244 , H03F2203/45288 , H03F2203/45311 , H03F2203/45352 , H03F2203/45731 , H03G1/0088
摘要： Variable gain amplifiers offering high frequency response with improved linearity and reduced power dissipation are provided. An amplifier is disclosed that is constructed from a one-stage topology with multiple signal paths and compensation networks for improved linearity and stable operation. In this amplifier, improved performance is obtained by replacing single transistor components with enhanced active devices which incorporate local negative feedback. One embodiment of the invention is a transconductance enhancement circuit that improves transconductance and input impedance relative to the prior art. A further development is an enhanced active cascode circuit that provides improved linearity. A high frequency bipolar transistor switch is also disclosed that incorporates lateral PNP transistors as high frequency switches with improved OFF-state to ON-state impedance ratio to realize a variable gain function. These circuits are combined in an amplifier circuit that provides variable gain and high frequency performance, with improved linearity, gain, and input impedance.

53. 发明专利

JP5319048B2 Circuit and method, and circuitry for controlling the regulator for driving a plurality of light emitting devices 有权
公开(公告)号：JP5319048B2
公开(公告)日：2013-10-16
申请号：JP2005222844
申请日：2005-08-01
申请人：リニアーテクノロジーコーポレイションLinear Technology Corporation
发明人：マーク・アール・ビチュニック , スティーブン・エル・マーティン
IPC分类号： G09G3/14
CPC分类号： H05B33/0815 , H05B33/0827
摘要： High efficiency drive circuitry for a group of parallel-connected light emitting devices, in which each device is driven in series by a respective source of bias current. The maximum voltage drop among the group of biased light emitting devices is determined and in response, a control voltage to drive all the light emitting device at the lowest effective voltage for the LED group is produced.

55. 发明专利

JP5075384B2 System and method for reducing the input current in the photo flash charger 有权
公开(公告)号：JP5075384B2
公开(公告)日：2012-11-21
申请号：JP2006263687
申请日：2006-09-28
申请人：リニアーテクノロジーコーポレイションLinear Technology Corporation
发明人：エム．ウーアルバート , エム．ピートキーウィクススティーブン
IPC分类号： H02M3/28
CPC分类号： H02J7/0068 , Y10T307/696

58. 发明专利

JP4485576B2 Power over Ethernet (registered trademark) analog power management in the system 有权
公开(公告)号：JP4485576B2
公开(公告)日：2010-06-23
申请号：JP2007543060
申请日：2005-10-20
申请人：リニアーテクノロジーコーポレイションLinear Technology Corporation
发明人：スタインマン，ジョン・アーサー，ジュニア
IPC分类号： H04B3/02 , H04B3/44 , H04L12/28
CPC分类号： H04L12/10

59. 发明专利

JP2010057361A Voltage mode feedback burst mode circuit 审中-公开
标题翻译：电压模式反馈脉冲模式电路
公开(公告)号：JP2010057361A
公开(公告)日：2010-03-11
申请号：JP2009281054
申请日：2009-12-10
申请人： Linear Technol Corp , リニアーテクノロジーコーポレイションLinear Technology Corporation
发明人： DWELLEY DAVID M
IPC分类号： H02M3/155 , H02M3/156
CPC分类号： H02M3/156
摘要： PROBLEM TO BE SOLVED: To provide a voltage mode feedback switch adjusting circuit which is able to automatically come in and go out of a burst mode.
SOLUTION: A switch adjuster makes a pulse-width modulation oscillator inactive by means of a fixed minimum non-zero duty cycle oscillator and provides a minimum ON-cycle to a power source switch in a switch oscillator, when a load current is low. This, further, lowers a required duty cycle generated by the pulse-width modulator. When the pulse-width modulator is driven so low that the zero-duty cycle is required, a digital logic receiving a duty cycle of the pulse-width modulator instructs the switch adjuster to enter the burst mode and to stop operation. This principle can be applied to either a non-modulation switch adjuster or a slightly altered synchronization switch adjuster. Additionally, the principle can be applied to both of a step-down configuration and a step-up configuration.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种电压模式反馈开关调节电路，其能够自动进入并跳出突发模式。
解决方案：开关调节器通过固定的最小非零占空比振荡器使脉冲宽度调制振荡器无效，并在开关振荡器中为电源开关提供最小的导通周期，当负载电流为低。这进一步降低了由脉冲宽度调制器产生的所需占空比。当脉冲宽度调制器被驱动得如此低以至需要零占空比时，接收脉冲宽度调制器占空比的数字逻辑指令开关调节器进入脉冲串模式并停止工作。该原理可以应用于非调制开关调节器或稍微改变的同步开关调节器。此外，该原理可以应用于降压配置和升压配置两者。版权所有（C）2010，JPO＆INPIT

60. 发明专利

JP2009507461A Modulation of the peak charging current for burst mode conversion 有权
公开(公告)号：JP2009507461A
公开(公告)日：2009-02-19
申请号：JP2008529032
申请日：2006-07-13
申请人：リニアーテクノロジーコーポレイションLinear Technology Corporation
发明人：ベルチ，マーク・アンソニー
IPC分类号： H02M3/155 , G05F3/26
CPC分类号： H02M3/1582 , H02M2001/0032 , Y02B70/16
摘要：４スイッチ昇降圧コンバータのバーストモード動作中において、入力電圧および出力電圧を検出することができ、入力電圧と出力電圧との間の差が規定範囲内であるとき、事前設定されたピーク充電電流しきい値レベルを変調することができる。バーストモード充電サイクルは、変調されたピーク充電しきい値レベルに達し、設定ピークレベルにて遮断されるまで進行する。その後、電荷転送サイクルおよび放電サイクルに進み得る。

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