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1.发明授权公开(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
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。
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2.发明申请公开(公告)号：US20050231176A1
公开(公告)日：2005-10-20
申请号：US10827492
申请日：2004-04-20
Applicant: Yu-Fen Liao , Cheng-Hsuan Fan
Inventor： Yu-Fen Liao , Cheng-Hsuan Fan
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。
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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。
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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。
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5.发明授权Load-dependent frequency jittering circuit and load-dependent frequency jittering method 有权负载相关的频率抖动电路和负载相关的频率抖动方法公开(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。
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Patent Agency Ranking
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
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。
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公开(公告)号：US07535690B2
公开(公告)日：2009-05-19
申请号：US11518446
申请日：2006-09-11
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
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。
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公开(公告)号：US06703885B1
公开(公告)日：2004-03-09
申请号：US10245390
申请日：2002-09-18
Applicant: Cheng-Hsuan Fan , Jing-Meng Liu
Inventor： Cheng-Hsuan Fan , Jing-Meng Liu
IPC: H03L500
CPC classification number: G05F1/56
Abstract: In a trimmer method and device, a reference signal of a target circuit is compared with a test signal, and a binary count output is generated according to result of the comparison. Thereafter, according to logic states of bits of the binary count output, electrical conduction through passive components that are coupled to the target circuit and that correspond respectively to the bits of the binary count output are selectively enabled and disabled so as to adjust the reference signal. The above steps are repeated by varying the binary count output until the reference signal approximates the test signal. Thereafter, fuses coupled to the passive components are melted selectively in a single fuse-melting operation so as to maintain the enabled and disabled states of electrical conduction through the passive components in order to set the reference signal to be approximate to the test signal.
Abstract translation: 在微调方法和装置中，将目标电路的参考信号与测试信号进行比较，并根据比较结果生成二进制计数输出。 此后，根据二进制计数输出的位的逻辑状态，选择性地使能和禁止耦合到目标电路并且分别对应于二进制计数输出的位的无源分量的电传导，以便调整参考信号 。 通过改变二进制计数输出重复上述步骤，直到参考信号近似于测试信号。 此后，耦合到无源部件的熔丝在单熔丝熔化操作中选择性熔化，以便通过无源部件保持启用和禁用的导电状态，以将参考信号设置为接近测试信号。
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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
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。
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10.发明申请Light-load efficiency improving method and apparatus for a flyback converter 有权用于反激式转换器的轻载效率改进方法和装置公开(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。
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