公开(公告)号：US07714551B2

公开(公告)日：2010-05-11

申请号：US11705090

申请日：2007-02-12

Applicant: Cheng-Hsuan Fan ,  Chao-Hsuan Chuang ,  Hung-Che Chou ,  Ching-Hsiang Yang ,  Chih-Ping Tan

Inventor： Cheng-Hsuan Fan ,  Chao-Hsuan Chuang ,  Hung-Che Chou ,  Ching-Hsiang Yang ,  Chih-Ping Tan

IPC: G05F1/40

CPC classification number: G05F1/565

Abstract: A linear voltage regulator comprises a transistor for converting a supply voltage to an output voltage. By directly monitoring the supply voltage and thereby rapidly responding when the supply voltage suffers a ripple, the linear voltage regulator enhances the stability of the output voltage.

Abstract translation: 线性稳压器包括用于将电源电压转换为输出电压的晶体管。 通过直接监控电源电压，从而在电源电压受到纹波时快速响应，线性稳压器可提高输出电压的稳定性。

公开(公告)号：US06747508B2

公开(公告)日：2004-06-08

申请号：US10229160

申请日：2002-08-28

Applicant: Jing-Meng Liu ,  Kent Hwang ,  Chao-Hsuan Chuang ,  Cheng-Hsuan Fan

Inventor： Jing-Meng Liu ,  Kent Hwang ,  Chao-Hsuan Chuang ,  Cheng-Hsuan Fan

IPC: G05F110

CPC classification number: G05F3/262

Abstract: A resistance adjustable of resistance mirror circuit having a master resistor R0, a reference current source terminal providing a current value I0 through the master resistor R0 to ground; a first transistor; a current mirror source terminal providing a current value n I0, through the first transistor to ground; an operational amplifier having a positive terminal connecting to a drain of the first transistor, a negative terminal connecting to the other terminal of the master resistor R0, and an output terminal connecting to a gate of the first transistor; a mirror resistor set composed of a plurality of transistors in parallel each other and having their source electrode connecting to ground. Each transistor of the mirror resistor set has a ratio of channel width over channel length being m-fold of that of the first transistor, where m, n is any positive numbers. Since gates of the transistors connect to the output terminal of the operational amplifier, each of the transistors therefore has an equivalent resistance Req=(1/nm)R0.

Abstract translation: 电阻镜电路的电阻可调，具有主电阻器R0，参考电流源端子通过主电阻器R0接地提供电流值I0; 第一晶体管; 电流镜源端子，通过第一晶体管接地提供电流值n I0; 具有连接到第一晶体管的漏极的正端子的运算放大器，连接到主电阻器R0的另一端子的负极端子和连接到第一晶体管的栅极的输出端子; 由多个彼此并联的晶体管组成并且其源电极连接到地的镜电阻器组。 镜面电阻器组的每个晶体管的沟道宽度与沟道长度的比率与第一晶体管的沟道长度的m倍成正比，其中m，n是任何正数。 由于晶体管的栅极连接到运算放大器的输出端，因此每个晶体管具有等效电阻Req =（1 / nm）R0。

公开(公告)号：US07907377B2

公开(公告)日：2011-03-15

申请号：US12318721

申请日：2009-01-07

Applicant: Cheng-Hsuan Fan ,  Chao-Hsuan Chuang ,  Hung-Che Chou ,  Ching-Hsiang Yang ,  Chih-Ping Tan

Inventor： Cheng-Hsuan Fan ,  Chao-Hsuan Chuang ,  Hung-Che Chou ,  Ching-Hsiang Yang ,  Chih-Ping Tan

IPC: H02H3/00 ,  H02H3/24

CPC classification number: H02H5/041 ,  H02H3/087 ,  H02H3/202

Abstract: For protecting a power system, two or three of over current, thermal and under voltage protection circuits are integrated as one protection circuit but operate independently, and one or more protection points thereof are adjusted dynamically in response to detected condition of the power system. Specifically, using voltage and current conditions in the power system to modify the over current protection and the thermal protection maximizes the performance of the power system and covers the process bias in the circuits.

Abstract translation: 为了保护电力系统，两个或三个过流，过热和欠压保护电路被集成为一个保护电路，但是独立操作，并且响应于电力系统的检测到的状态来动态地调整其一个或多个保护点。 具体来说，使用电力系统中的电压和电流条件修改过电流保护和热保护，最大限度地提高电力系统的性能，并覆盖电路中的过程偏置。

公开(公告)号：US20080298095A1

公开(公告)日：2008-12-04

申请号：US11882637

申请日：2007-08-03

Applicant: Chao-Hsuan Chuang ,  Cheng-Hsuan Fan ,  Hung-Che Chou

Inventor： Chao-Hsuan Chuang ,  Cheng-Hsuan Fan ,  Hung-Che Chou

IPC: H02M3/335

CPC classification number: H02M3/33523 ,  H02M2001/0025 ,  H02M2001/0032 ,  Y02B70/16

Abstract: A flyback converter has a controller to switch a power switch so as to convert an input voltage to an output voltage for a load by monitoring an output voltage dependent signal and a current sensing signal derived from a current flowing through the power switch, a light-load efficiency improving apparatus monitors the load and a supply voltage provided for the controller to selectively clamp the output voltage dependent signal when the load is lower than a first threshold value and the supply voltage is lower than a second threshold value, so as to increase the supply voltage.

Abstract translation: 反激式转换器具有控制器，用于切换电源开关，以便通过监视输出电压相关信号和从流过电源开关的电流得到的电流感测信号将输入电压转换为负载的输出电压， 负载效率改善装置监视负载和为控制器提供的电源电压，以便在负载低于第一阈值并且电源电压低于第二阈值时选择性地钳位输出电压相关信号，从而增加 电源电压。

公开(公告)号：US07180886B2

公开(公告)日：2007-02-20

申请号：US10153784

申请日：2002-05-24

Applicant: Jing-Meng Liu ,  Kent Hwang ,  Chao-Hsuan Chuang ,  Cheng-Hsuan Fan

Inventor： Jing-Meng Liu ,  Kent Hwang ,  Chao-Hsuan Chuang ,  Cheng-Hsuan Fan

IPC: H04J3/06 ,  H04L12/50

CPC classification number: H04L25/4923 ,  H04L7/06 ,  H04L25/4904

Abstract: In a synchronized data communication on a one-wired bus, it transmits and receives a synchronizing signal that segments part of or all proportions of the data signal by use of three electrically distinguishable statuses for the identifier of the synchronizing signal and the logic states of the data signal to increase the endurance of frequency displacement and resist influences of the interference of external conditions, low quality of transmission medium, and limitation of transmission distance and make the reliability and correctness of the signal transmission improve substantially. It is also clearly illustrated the feasibility and simplicity for implementing the one-wired synchronized communication by a plurality of exemplary signal types and a transceiver circuitry.

Abstract translation: 在单线总线上的同步数据通信中，它发送和接收同步信号，该同步信号通过使用用于同步信号的标识符的三个电可区分状态以及数据信号的逻辑状态来分割数据信号的一部分或全部比例 数据信号增加频率位移的耐久性，抵抗外部条件干扰，传输介质质量差，传输距离限制的影响，使信号传输的可靠性和正确性大大提高。 还清楚地示出了通过多个示例性信号类型和收发器电路来实现单线同步通信的可行性和简单性。

公开(公告)号：US06969980B1

公开(公告)日：2005-11-29

申请号：US10850164

申请日：2004-05-21

Applicant: Liang-Pin Tai ,  Kent Hwang ,  Jian-Rong Huang ,  Kuo-Ping Liu ,  Cheng-Hsuan Fan ,  Ko-Cheng Wang ,  Yu-Fan Liao

Inventor： Liang-Pin Tai ,  Kent Hwang ,  Jian-Rong Huang ,  Kuo-Ping Liu ,  Cheng-Hsuan Fan ,  Ko-Cheng Wang ,  Yu-Fan Liao

IPC: G05F1/40 ,  G05F1/44 ,  H02M1/08

CPC classification number: H02M1/08

Abstract: A pulse width modulator includes an amplifier module, a comparator module, and a filter module. The amplifier module receives a feedback voltage signal from a passive network, and generates first and second non-inverted voltage signals and first and second inverted voltage signals in response to the feedback voltage signal. The comparator module receives the first and second non-inverted voltage signals and the first and second inverted voltage signals, and provides first and second differential voltage signals corresponding to the first and second non-inverted voltage signals and the first and second inverted voltage signals. The filter module is coupled between the amplifier module and the comparator module, and is operable so as to attenuate high frequency components of the first and second non-inverted voltage signals. As such, the presence of noise in the feedback voltage signal does not affect differential operation of the comparator module.

Abstract translation: 脉冲宽度调制器包括放大器模块，比较器模块和滤波器模块。 放大器模块从无源网络接收反馈电压信号，并响应于反馈电压信号产生第一和第二非反相电压信号以及第一和第二反相电压信号。 比较器模块接收第一和第二非反相电压信号以及第一和第二反相电压信号，并提供对应于第一和第二非反相电压信号以及第一和第二反相电压信号的第一和第二差分电压信号。 滤波器模块耦合在放大器模块和比较器模块之间，并且可操作以便衰减第一和第二非反相电压信号的高频分量。 因此，反馈电压信号中的噪声的存在不会影响比较器模块的差分工作。

公开(公告)号：US06960902B1

公开(公告)日：2005-11-01

申请号：US10827492

申请日：2004-04-20

Applicant: Yu-Fen Liao ,  Cheng-Hsuan Fan

Inventor： Yu-Fen Liao ,  Cheng-Hsuan Fan

IPC: G05F1/652 ,  G05F1/656 ,  H02M3/158 ,  H03L7/06

CPC classification number: H02M3/1582 ,  H02M2001/0009

Abstract: A conversion circuit for discriminating sourcing current and sinking current utilizes a complementary switch circuit to change the serial loop connected with the output load according to ON/OFF signals, so as to correspond to a sourcing current output and a sinking current output. The conversion circuit also employs a voltage emulation circuit to shift the feedback voltage of both sourcing and sinking current to a suitable positive range, so as to omit a negative power source design. The conversion circuit utilizes a switch control logic circuit to timely blank the partial compared result of the feedback voltage of sinking current to generate correct ON/OFF signals.

Abstract translation: 用于鉴别源电流和吸收电流的转换电路利用互补开关电路根据ON / OFF信号改变与输出负载相连的串联环路，以便对应于源极电流输出和吸收电流输出。 转换电路还采用电压仿真电路将源极和吸收电流的反馈电压移动到合适的正的范围，以省略负电源设计。 该转换电路利用开关控制逻辑电路，及时清除沉入电流反馈电压的部分比较结果，产生正确的ON / OFF信号。

公开(公告)号：US06809616B2

公开(公告)日：2004-10-26

申请号：US10342183

申请日：2003-01-15

Applicant: Jing-Meng Liu ,  Kent Hwang ,  Chao-Hsuan Chuang ,  Cheng-Hsuan Fan

Inventor： Jing-Meng Liu ,  Kent Hwang ,  Chao-Hsuan Chuang ,  Cheng-Hsuan Fan

IPC: H03H1100

CPC classification number: H03H11/485 ,  H03H11/48

Abstract: An inductor equivalent circuit is disclosed. The circuit comprises a reference current source, a first current mirror, a second current mirror, two operational amplifiers OP1 and OP2, a capacitor, a first transistor, a second transistor, a mirror resistor set, and a bypass current source in parallel with the capacitor. An input signal is through OP1 and second transistor to control the reference current source. The first mirror current is then feed-back a signal to the first transistor through an OP2. The current signal makes the drain current of the first transistor lags the input voltage signal by 90° due to the capacitor coupled with the first mirror current source. The mirror resistor set can be resistors having one common terminal grounded, and other terminals each, respectively, coupled with the first and the second transistor and the capacitor, or can be composed of transistors and all of them with gate property biased so that the transistors in the mirror resistor set are operated in an ohmic region. The second mirror current provides an output current of the inductor equivalent circuit for next cascade stage.

Abstract translation: 公开了一种电感器等效电路。 该电路包括参考电流源，第一电流镜，第二电流镜，两个运算放大器OP1和OP2，电容器，第一晶体管，第二晶体管，反射镜电阻器组以及旁路电流源 电容器。 输入信号通过OP1和第二晶体管来控制参考电流源。 然后通过OP2将第一镜电流反馈到第一晶体管。 由于与第一反射镜电流源耦合的电容器，电流信号使得第一晶体管的漏极电流滞留输入电压信号90°。 镜电阻器组可以是具有一个公共端子接地的电阻器，并且其他端子分别与第一和第二晶体管和电容器耦合，或者可以由晶体管组成，并且所有这些端子都具有偏置的栅极特性，使得晶体管 镜面电阻组在欧姆区域工作。 第二镜电流为下一级联级提供电感等效电路的输出电流。

公开(公告)号：US07728571B2

公开(公告)日：2010-06-01

申请号：US11935558

申请日：2007-11-06

Applicant: Chao-Hsuan Chuang ,  Cheng-Hsuan Fan ,  Hung-Che Chou ,  Ching-Hsiang Yang

Inventor： Chao-Hsuan Chuang ,  Cheng-Hsuan Fan ,  Hung-Che Chou ,  Ching-Hsiang Yang

IPC: G05F1/56

CPC classification number: H03K3/72

Abstract: The present invention discloses a load-dependent frequency jittering circuit, comprising: a load condition detection circuit for receiving a switching signal and generating an output according to a load condition; a number generator for receiving the output of the load condition detection circuit and generating a number; a digital to analog converter for converting the output of the number generator to an analog signal; and an oscillator for generating a jittered frequency according to the output of the digital to analog converter.

Abstract translation: 本发明公开了一种负载相关的频率抖动电路，包括：负载状态检测电路，用于接收开关信号并根据负载条件产生输出; 数字发生器，用于接收负载状态检测电路的输出并产生一个数字; 用于将数字发生器的输出转换为模拟信号的数模转换器; 以及用于根据数模转换器的输出产生抖动频率的振荡器。

公开(公告)号：US07570121B2

公开(公告)日：2009-08-04

申请号：US11821498

申请日：2007-06-25

Applicant: Cheng-Hsuan Fan ,  Chao-Hsuan Chuang ,  Hung-Che Chou ,  Ching-Hsiang Yang ,  Chih-Ping Tan

Inventor： Cheng-Hsuan Fan ,  Chao-Hsuan Chuang ,  Hung-Che Chou ,  Ching-Hsiang Yang ,  Chih-Ping Tan

IPC: H03L7/00

CPC classification number: H03L7/06 ,  H03L7/099

Abstract: A frequency jittering control circuit wherein by means of the characteristics of a PLL whose input switches between different frequencies, the output frequency of the PLL swings between the different frequencies to achieve the desired frequency jittering.

Abstract translation: 一种频率抖动控制电路，其中通过PLL的特性，其输入在不同频率之间切换，PLL的输出频率在不同频率之间摆动，以实现期望的频率抖动。