公开(公告)号：US06836415B1

公开(公告)日：2004-12-28

申请号：US10465161

申请日：2003-06-18

Applicant: Ta-yung Yang ,  Chem-Lin Chen ,  Jenn-yu G. Lin ,  Song-Yi Lin

Inventor： Ta-yung Yang ,  Chem-Lin Chen ,  Jenn-yu G. Lin ,  Song-Yi Lin

IPC: H02M3335

CPC classification number: H02M3/33507 ,  H01F2038/026 ,  H02M2001/0006

Abstract: The present invention provides a primary-side regulated PWM controller with improved load regulation. In every PWM cycle, a built-in feedback voltage samples and holds a flyback voltage from the auxiliary winding of the transformer via a sampling switch and generates a feedback voltage accordingly. A bias current sink pulls a bias current that is proportional to the feedback voltage. Via a detection resistor, the bias current will produce a voltage drop to compensate the voltage drop of an output rectifying diode as the output load changes. According to the present invention, the bias current can enable the PWM controller to regulate the output voltage very precisely without using a secondary feedback circuit.

Abstract translation: 本发明提供了具有改进的负载调节的初级侧调节PWM控制器。 在每个PWM周期中，内置的反馈电压通过采样开关采样并保持来自变压器的辅助绕组的反激电压，并产生相应的反馈电压。 偏置电流吸收器提供与反馈电压成比例的偏置电流。 通过检测电阻，当输出负载变化时，偏置电流将产生电压降，以补偿输出整流二极管的电压降。 根据本发明，偏置电流可使PWM控制器非常精确地调节输出电压，而不使用次级反馈电路。

公开(公告)号：US06768655B1

公开(公告)日：2004-07-27

申请号：US10357842

申请日：2003-02-03

Applicant: Ta-yung Yang ,  Chern-Lin Chen ,  Jenn-yu G. Lin

Inventor： Ta-yung Yang ,  Chern-Lin Chen ,  Jenn-yu G. Lin

IPC: H02M3335

CPC classification number: H02M1/4225 ,  H02M2001/0032 ,  Y02B70/126 ,  Y02B70/16 ,  Y02P80/112

Abstract: The present invention discloses a ZCS discontinuous mode PFC controller having a power saving modulator. The controller turns on through the feedback resistor and the parasitic diode of the controller, thus eliminating the need for a startup resistor. To achieve ZCS, the inductor current is released to zero, while the switching signal is off, before the next switching cycle starts. In order to decrease the switching frequency for light load conditions, an off-time delay is inserted right before the start of every switching cycle. The off-time delay is modulated to be the function of the feedback voltage and supply voltage. When the supply voltage is lower than the limit voltage, the off-time delay will decrease to inhibit the decrease of a switching frequency therefore prevents a low supply voltage. The switching frequency is decreased in accordance with the decrease of the load. Consequently, the switching losses and power consumption for light load and no load conditions are reduced.

Abstract translation: 本发明公开了一种具有省电调制器的ZCS不连续模式PFC控制器。 控制器通过反馈电阻和控制器的寄生二极管接通，因此无需启动电阻。 为了实现ZCS，在下一个开关周期开始之前，电感电流释放为零，而开关信号关闭。 为了降低轻负载条件的开关频率，在每个开关周期开始之前插入关断时间延迟。 关断时间延迟被调制为反馈电压和电源电压的函数。 当电源电压低于极限电压时，关断时间延迟将降低，以抑制开关频率的降低，从而防止低电源电压。 开关频率根据负载的减小而减小。 因此，减轻了轻负载和无负载条件下的开关损耗和功耗。

公开(公告)号：US06674656B1

公开(公告)日：2004-01-06

申请号：US10065532

申请日：2002-10-28

Applicant: Ta-yung Yang ,  Jenn-yu G. Lin

Inventor： Ta-yung Yang ,  Jenn-yu G. Lin

IPC: H02M3335

CPC classification number: H02M3/33523 ,  H02M2001/0022 ,  H02M2001/0025

Abstract: A PWM controller having a saw-limiter for power limit without input voltage sensing. The saw-limiter has an adder, a reference voltage, a scaler and a saw-tooth signal that is generated by the PWM oscillator. The saw-limiter produces a saw-limited voltage. The PWM controller will turn off its output when the current-sense input signal of the PWM controller is higher than the saw-limited voltage. The saw-limited voltage is equal to the reference voltage while a PWM switching period starts. After that, the amplitude of the saw-limited voltage will gradually increase until it reaches its maximum voltage. Subsequently, a saw-tooth like waveform is generated for the saw-limited voltage. The slope of the current-sense input signal is proportional to the line voltage. Therefore, a higher line voltage creates a sharp slope for the current-sense input signal, which will be restricted by a lower saw-limited voltage and produces a shorter PWM signal. The PWM signal will be turned off once the voltage of the current sense input signal is higher than the saw limited voltage. In terms of power limit, using the saw-limiter the power limit will be lower when the line voltage is higher. By properly selecting the value of the scaler an identical output power limit for the low line and high line voltage input can be achieved.

Abstract translation: 一个PWM控制器，具有无限制输入电压检测功率限制器。 锯限制器具有由PWM振荡器产生的加法器，参考电压，定标器和锯齿信号。 锯限制器产生锯限电压。 当PWM控制器的电流检测输入信号高于锯限电压时，PWM控制器将关闭其输出。 在PWM开关周期开始时，锯限电压等于参考电压。 之后，锯限制电压的幅度将逐渐增加，直到达到其最大电压。 随后，锯锯状电压产生锯齿形波形。 电流检测输入信号的斜率与线路电压成比例。 因此，较高的线路电压会为电流检测输入信号产生尖锐的斜率，这将受到较低的锯限制电压的限制，并产生较短的PWM信号。 一旦电流检测输入信号的电压高于锯限制电压，PWM信号将被关闭。 在功率限制方面，使用锯限制器，当线路电压较高时，功率限制将较低。 通过适当选择缩放器的值，可以实现低线路和高线路电压输入的相同输出功率限制。

公开(公告)号：US06661679B1

公开(公告)日：2003-12-09

申请号：US10065531

申请日：2002-10-28

Applicant: Ta-yung Yang ,  Jenn-yu G. Lin

Inventor： Ta-yung Yang ,  Jenn-yu G. Lin

IPC: H02M114

CPC classification number: H02M1/40 ,  H01F2038/026 ,  H02M3/33523 ,  H02M2001/0032 ,  Y02B70/16

Abstract: An adaptive off-time modulator of a PWM controller is provided for power saving in the light-load and no-load conditions. The maximum on-time is kept as a constant and a bias current of the oscillator in the PWM controller is moderated to achieve the off-time modulation. Reduction of the bias current increases the off-time of the switching period. The bias current is a function of the supply voltage and the feedback voltage, which is derived from a voltage feedback loop. A threshold voltage defines the level of the light load. A limit voltage defines the low level of the supply voltage. A bias current synthesizer generates the bias current. Once the feedback voltage is decreased lower than the threshold voltage, the bias current is reduced linearly and the off-time of the switching period is increased gradually. When the supply voltage is lower than the limit voltage, the bias current increases and determines a maximum off-time of the switching period. The maximum on-time and off-time of the switching period determines the PWM frequency. As the limit voltage varies in every switching cycle, the frequency spectrum of PWM signal spreads in light-load and no-load conditions; and therefore, the acoustic noise is suppressed. The feedback voltage and the supply voltage determine the switching period of the PWM signal. The maximum on-time is kept constant and the switching period is increased by increasing the off-time, such that the magnetic components, such as inductors and transformers, are prevented from being saturated.

Abstract translation: 提供PWM控制器的自适应关断时间调制器，用于轻负载和无负载条件下的功率节省。 将最大导通时间保持为恒定，并且调节PWM控制器中的振荡器的偏置电流以实现关断时间调制。 偏置电流的减小增加了开关周期的关断时间。 偏置电流是由电压反馈回路导出的电源电压和反馈电压的函数。 阈值电压定义轻负载的电平。 极限电压定义电源电压的低电平。 偏置电流合成器产生偏置电流。 一旦反馈电压降低到低于阈值电压，则偏置电流线性减小，并且切换周期的关闭时间逐渐增加。 当电源电压低于极限电压时，偏置电流增加并确定开关周期的最大关断时间。 开关周期的最大导通时间和关断时间决定了PWM频率。 随着每个开关周期的限制电压变化，PWM信号的频谱在轻负载和空载条件下扩展; 因此抑制声学噪声。 反馈电压和电源电压决定了PWM信号的开关周期。 最大导通时间保持恒定，并且通过增加关断时间来增加开关周期，使得防止诸如电感器和变压器的磁性部件饱和。

公开(公告)号：US20110038183A1

公开(公告)日：2011-02-17

申请号：US12748548

申请日：2010-03-29

Applicant: Ta-Yung Yang ,  Shao-Chun Huang ,  Chen-Hui Chan ,  Jenn-Yu G. Lin

Inventor： Ta-Yung Yang ,  Shao-Chun Huang ,  Chen-Hui Chan ,  Jenn-Yu G. Lin

IPC: H02M3/335

CPC classification number: H02M3/33523 ,  H02M3/156 ,  H02M3/157

Abstract: A switching regulator of a power converter is provided and includes a feedback-input circuit, a programming circuit, and a peak-current-threshold circuit. The feedback-input circuit is coupled to a terminal of the switching regulator for receiving a feedback signal. The feedback-input circuit is operated in a first range of a terminal signal. The programming circuit is coupled to the terminal for generating a programming signal. The programming signal is operated in a second range of the feedback signal. The peak-current-threshold circuit generates a threshold signal in accordance with the programming signal. The feedback signal is coupled to regulate the output of the power converter, and the threshold signal is coupled to limit a peak switching current of the power converter.

Abstract translation: 提供了功率转换器的开关稳压器，并且包括反馈输入电路，编程电路和峰值电流阈值电路。 反馈输入电路耦合到开关稳压器的端子，用于接收反馈信号。 反馈输入电路在终端信号的第一范围内工作。 编程电路耦合到终端以产生编程信号。 编程信号在反馈信号的第二范围内工作。 峰值电流阈值电路根据编程信号产生阈值信号。 耦合反馈信号以调节功率转换器的输出，并且阈值信号被耦合以限制功率转换器的峰值切换电流。

公开(公告)号：US20100232187A1

公开(公告)日：2010-09-16

申请号：US12720096

申请日：2010-03-09

Applicant: Ta-Yung YANG ,  Wei-Hsuan HUANG ,  Chuh-Ching LI ,  Rui-Hong LU ,  Jenn-Yu G. LIN

Inventor： Ta-Yung YANG ,  Wei-Hsuan HUANG ,  Chuh-Ching LI ,  Rui-Hong LU ,  Jenn-Yu G. LIN

IPC: H02M3/335

CPC classification number: H02M3/33507 ,  H02M2001/0032 ,  Y02B70/16

Abstract: A control circuit of a power converter for light-load power saving according to the present invention comprises a first feedback circuit coupled to an output voltage of the power converter to receive a first feedback signal. A second feedback circuit is coupled to the output voltage to receive a second feedback signal. A control circuit generates a switching signal for switching a transformer of the power converter and regulating the output voltage of the power converter in response to the first feedback signal and the second feedback signal. The switching signal is generated in accordance with the first feedback signal when an output load is high. The switching signal is generated in accordance with the second feedback signal during a light-load condition.

Abstract translation: 根据本发明的用于轻载省电的功率转换器的控制电路包括耦合到功率转换器的输出电压的第一反馈电路以接收第一反馈信号。 第二反馈电路耦合到输出电压以接收第二反馈信号。 控制电路响应于第一反馈信号和第二反馈信号产生用于切换功率转换器的变压器的开关信号并调节功率转换器的输出电压。 当输出负载高时，根据第一反馈信号产生开关信号。 在轻负载状态期间根据第二反馈信号产生开关信号。

公开(公告)号：US20100123449A1

公开(公告)日：2010-05-20

申请号：US12346901

申请日：2008-12-31

Applicant: Ta-Yung Yang ,  Jenn-Yu G. Lin ,  Yi-Chi Lin ,  Cheng-Chi Hsueh

Inventor： Ta-Yung Yang ,  Jenn-Yu G. Lin ,  Yi-Chi Lin ,  Cheng-Chi Hsueh

IPC: G05F1/44

CPC classification number: G08C19/16 ,  H02M5/2573 ,  Y10T307/832

Abstract: A wall control interface for power management includes a transmitting circuit that generates a switching signal to control a switch and achieve a phase modulation to a power line signal in response to a transmitting-data. A receiving circuit is coupled to detect the phase of the power line signal for generating a data signal and a receiving-data in response to the phase of the power line signal. The receiving circuit further generates a control signal to control power of a load in accordance with the data signal or the receiving-data. The phase modulation is achieved by controlling a turn-on angle of the power line signal. The switch remains in a turn-on state during the normal condition, which achieves good power and low current harmonic. The phase modulation is only performed during the communication of the power management.

Abstract translation: 用于电力管理的墙壁控制接口包括产生开关信号以控制开关并且响应于发送数据实现对电力线信号的相位调制的发送电路。 接收电路被耦合以检测用于响应于电力线信号的相位的数据信号和接收数据的电力线信号的相位。 接收电路还根据数据信号或接收数据产生控制负载的功率的控制信号。 通过控制电力线信号的接通角来实现相位调制。 在正常情况下，开关保持导通状态，实现良好的功率和低电流谐波。 相位调制仅在电源管理通讯期间进行。

公开(公告)号：US20080225560A1

公开(公告)日：2008-09-18

申请号：US11684642

申请日：2007-03-12

Applicant: Ta-yung Yang ,  Rui-Hong Lu ,  Jenn-Yu G. Lin

Inventor： Ta-yung Yang ,  Rui-Hong Lu ,  Jenn-Yu G. Lin

IPC: H02M7/48

CPC classification number: H02J1/102 ,  H02M3/1584 ,  Y10T307/25 ,  Y10T307/406 ,  Y10T307/461 ,  Y10T307/74 ,  Y10T307/747 ,  Y10T307/766 ,  Y10T307/826 ,  Y10T307/865 ,  Y10T307/937

Abstract: A switching controller for parallel power converters is disclosed. The switching controller includes an input circuit coupled to an input terminal of the switching controller to receive an input signal. An integration circuit is coupled to the input circuit to generate an integration signal in response to the pulse width of the input signal. A control circuit generates a switching signal for switching the power converters. The switching signal is enabled in response to the enabling of the input signal. A programmable delay time is generated between the input signal and the switching signal. The pulse width of the switching signal is determined in response to the integration signal.

Abstract translation: 公开了并联电力转换器的开关控制器。 开关控制器包括耦合到开关控制器的输入端以接收输入信号的输入电路。 积分电路耦合到输入电路以响应于输入信号的脉冲宽度产生积分信号。 控制电路产生用于切换功率转换器的开关信号。 响应于输入信号的使能，使能开关信号。 在输入信号和开关信号之间产生可编程延迟时间。 响应于积分信号确定开关信号的脉冲宽度。

公开(公告)号：US20080180262A1

公开(公告)日：2008-07-31

申请号：US11627052

申请日：2007-01-25

Applicant: Ta-yung Yang ,  Jenn-Yu G. Lin

Inventor： Ta-yung Yang ,  Jenn-Yu G. Lin

IPC: G08B21/00

CPC classification number: H04B3/54 ,  H04B2203/547 ,  H04B2203/5491 ,  Y10T307/625

Abstract: A power supply system is introduced herein. The power supply system includes a power converter to supply a power source to an electronic circuit through an output cable of the power supply. A communication unit is coupled to the output cable of the power supply to develop a communication channel between the power converter and the electronic circuit in order to report the status of the power converter to the electronic circuit.

Abstract translation: 本文介绍电源系统。 电源系统包括电源转换器，用于通过电源的输出电缆向电子电路提供电源。 通信单元耦合到电源的输出电缆，以在功率转换器和电子电路之间开发通信信道，以便将功率转换器的状态报告给电子电路。

公开(公告)号：US07355250B2

公开(公告)日：2008-04-08

申请号：US11222707

申请日：2005-09-08

Applicant: Chih-Feng Huang ,  Ta-yung Yang ,  Jenn-yu G. Lin ,  Tuo-Hsin Chien

Inventor： Chih-Feng Huang ,  Ta-yung Yang ,  Jenn-yu G. Lin ,  Tuo-Hsin Chien

IPC: H01L23/62 ,  H01L29/76 ,  H01L29/94 ,  H01L31/062 ,  H01L31/113

CPC classification number: H01L27/0262

Abstract: An electrostatic discharge (ESD) device with a parasitic silicon controlled rectifier (SCR) structure and controllable holding current is provided. A first distance is kept between a first N+ doped region and a first P+ doped region, and a second distance is kept between a second P+ doped region and a third N+ doped region. In addition, the holding current of the ESD device can be set to a specific value by modulating the first distance and the second distance. The holding current is in inverse proportion to the first distance and the second distance.

Abstract translation: 提供具有寄生可控硅整流器（SCR）结构和可控保持电流的静电放电（ESD）器件。 在第一N +掺杂区域和第一P +掺杂区域之间保持第一距离，并且在第二P +掺杂区域和第三N +掺杂区域之间保持第二距离。 此外，通过调制第一距离和第二距离，可以将ESD装置的保持电流设定为特定值。 保持电流与第一距离和第二距离成反比。