公开(公告)号：US20110305055A1

公开(公告)日：2011-12-15

申请号：US13069534

申请日：2011-03-23

Applicant: JHIH-DA HSU ,  CHIA-YO YEH ,  CHOU-SHENG WANG ,  YING-CHIEH SU ,  RUI-HONG LU

Inventor： JHIH-DA HSU ,  CHIA-YO YEH ,  CHOU-SHENG WANG ,  YING-CHIEH SU ,  RUI-HONG LU

IPC: H02M7/217

CPC classification number: H02M3/33592 ,  Y02B70/1475

Abstract: An adaptive synchronous rectification control circuit and a control method are developed. The control circuit comprises an adaptive circuit that generates a reference signal in response to a detection signal of a power converter. A clamped circuit clamps the reference signal at a threshold voltage if the reference signal equals or is greater than the threshold voltage. A switching circuit generates a control signal to control a synchronous switch of the power converter in response to the detection signal and the reference signal. The control method generates the reference signal in response to the detection signal. The reference signal is clamped at the threshold voltage if the reference signal equals or is greater than the threshold voltage. The method further generates the control signal to control the synchronous switch of the power converter in response to the detection signal and the reference signal.

Abstract translation: 开发了自适应同步整流控制电路和控制方法。 控制电路包括响应于功率转换器的检测信号产生参考信号的自适应电路。 如果参考信号等于或大于阈值电压，钳位电路将参考信号钳位在阈值电压。 切换电路响应于检测信号和参考信号产生控制信号以控制功率转换器的同步开关。 控制方法响应于检测信号产生参考信号。 如果参考信号等于或大于阈值电压，则参考信号被钳位在阈值电压。 该方法还响应于检测信号和参考信号产生控制信号以控制功率转换器的同步开关。

公开(公告)号：US07426120B2

公开(公告)日：2008-09-16

申请号：US11287268

申请日：2005-11-28

Applicant: Ta-Yung Yang ,  Rui-Hong Lu ,  Chuh-Ching Li ,  Feng-Cheng Tsao ,  Pei-Sheng Tsu

Inventor： Ta-Yung Yang ,  Rui-Hong Lu ,  Chuh-Ching Li ,  Feng-Cheng Tsao ,  Pei-Sheng Tsu

IPC: H02M3/335

CPC classification number: H02M3/33523 ,  Y02B70/1433

Abstract: The present invention provides a switching control circuit having a valley voltage detector to achieve the soft switching and improve the efficiency of a power converter. The switching control circuit includes a control circuit coupled to the feedback signal to generate a switching signal. Through an output circuit, the switching signal drives a switching device for switching a transformer and regulating the output of the power converter. The valley voltage detector is coupled to an auxiliary winding of the transformer for generating a control signal in response to the voltage of the transformer. The control signal is used for enabling the switching signal. The switching signal further turns on the switching device in response to a valley voltage across the switching device.

Abstract translation: 本发明提供一种具有谷值电压检测器的开关控制电路，以实现软开关并提高功率转换器的效率。 开关控制电路包括耦合到反馈信号的控制电路以产生开关信号。 通过输出电路，开关信号驱动用于切换变压器并调节功率转换器的输出的开关装置。 谷值电压检测器耦合到变压器的辅助绕组，以响应于变压器的电压产生控制信号。 控制信号用于启用切换信号。 开关信号进一步响应于开关器件上的谷值电压而导通开关器件。

公开(公告)号：US08816753B2

公开(公告)日：2014-08-26

申请号：US13073862

申请日：2011-03-28

Applicant: Rui-Hong Lu ,  Han-Chung Tai ,  Hsin-Chih Chiang

Inventor： Rui-Hong Lu ,  Han-Chung Tai ,  Hsin-Chih Chiang

IPC: H01H37/76 ,  G11C17/18

CPC classification number: G11C17/18 ,  G11C17/16

Abstract: A trim circuit for a power supply controller includes: a control circuit; at least a capacitance type programmable circuit connection; and a switching circuit, under control of the control circuit, the switching circuit selectively coupling the capacitance type programmable circuit connection to anyone of an operation voltage and a programming voltage, for determining a programming state of the capacitance type programmable circuit connection.

Abstract translation: 电源控制器的微调电路包括：控制电路; 至少电容式可编程电路连接; 以及开关电路，在所述控制电路的控制下，所述开关电路将所述电容式可编程电路连接选择性地耦合到任何操作电压和编程电压，以确定所述电容型可编程电路连接的编程状态。

公开(公告)号：US08780515B2

公开(公告)日：2014-07-15

申请号：US13218650

申请日：2011-08-26

Applicant: Chia-Liang Chien ,  Rui-Hong Lu

Inventor： Chia-Liang Chien ,  Rui-Hong Lu

IPC: H02H3/20 ,  H02H3/24 ,  H02H9/04

CPC classification number: H02H7/12 ,  H02M1/32 ,  H02M3/33507

Abstract: A control circuit with protection circuit for power supply according to the present invention comprises a peak-detection circuit and a protection circuit. The peak-detection circuit detects an AC input voltage and generates a peak-detection signal. The protection circuit comprises an over-voltage protection circuit. The over-voltage protection circuit generates an over-voltage protection signal in response to the peak-detection signal. The protection circuit generates a reset signal to reduce the output of the power supply in response to the over-voltage protection signal. The present invention can protect the power supply in response to the AC input voltage effectively through the peak-detection circuit.

Abstract translation: 根据本发明的具有电源保护电路的控制电路包括峰值检测电路和保护电路。 峰值检测电路检测交流输入电压并产生峰值检测信号。 保护电路包括过电压保护电路。 过电压保护电路响应峰值检测信号产生过电压保护信号。 保护电路产生复位信号，以响应过电压保护信号减小电源的输出。 本发明可以通过峰值检测电路有效地响应于AC输入电压来保护电源。

公开(公告)号：US08559196B2

公开(公告)日：2013-10-15

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：US08164928B2

公开(公告)日：2012-04-24

申请号：US12819340

申请日：2010-06-21

Applicant: Li Lin ,  Rui-Hong Lu

Inventor： Li Lin ,  Rui-Hong Lu

IPC: H02M3/335

CPC classification number: H02M3/33515 ,  H02M3/33523

Abstract: A method and an apparatus of operating a primary-side-regulation power converter at both continuous current mode and discontinuous current mode are provided. The apparatus includes a switching circuit, a signal generator, a correlation circuit, and a feedback modulator. The signal generator generates a half signal and a second sampling pulse in response to a switching signal. The correlation circuit receives the half signal, the second sampling pulse and a switching-current signal for generating a modulating current. The feedback modulator modulates a feedback signal in response to the modulating current, a detection signal and the switching signal. The detection signal obtained from a transformer is correlated to an output voltage of the primary-side-regulation power converter. An on-period of the half signal is half of an on-period of the switching signal. The switching-current signal is sampled at a falling-edge of the half signal.

Abstract translation: 提供了在连续电流模式和不连续电流模式下操作初级侧调节功率转换器的方法和装置。 该装置包括开关电路，信号发生器，相关电路和反馈调制器。 信号发生器响应于切换信号产生半信号和第二采样脉冲。 相关电路接收半信号，第二采样脉冲和用于产生调制电流的开关电流信号。 反馈调制器响应调制电流，检测信号和开关信号调制反馈信号。 从变压器获得的检测信号与初级侧调节功率转换器的输出电压相关。 半信号的导通周期是开关信号的导通周期的一半。 开关电流信号在半信号的下降沿进行采样。

公开(公告)号：US20110267850A1

公开(公告)日：2011-11-03

申请号：US12819340

申请日：2010-06-21

Applicant: Li Lin ,  Rui-Hong Lu

Inventor： Li Lin ,  Rui-Hong Lu

IPC: H02M3/335

CPC classification number: H02M3/33515 ,  H02M3/33523

Abstract: A method and an apparatus of operating a primary-side-regulation power converter at both continuous current mode and discontinuous current mode are provided. The apparatus includes a switching circuit, a signal generator, a correlation circuit, and a feedback modulator. The signal generator generates a half signal and a second sampling pulse in response to a switching signal. The correlation circuit receives the half signal, the second sampling pulse and a switching-current signal for generating a modulating current. The feedback modulator modulates a feedback signal in response to the modulating current, a detection signal and the switching signal. The detection signal obtained from a transformer is correlated to an output voltage of the primary-side-regulation power converter. An on-period of the half signal is half of an on-period of the switching signal. The switching-current signal is sampled at a falling-edge of the half signal.

Abstract translation: 提供了在连续电流模式和不连续电流模式下操作初级侧调节功率转换器的方法和装置。 该装置包括开关电路，信号发生器，相关电路和反馈调制器。 信号发生器响应于切换信号产生半信号和第二采样脉冲。 相关电路接收半信号，第二采样脉冲和用于产生调制电流的开关电流信号。 反馈调制器响应调制电流，检测信号和开关信号调制反馈信号。 从变压器获得的检测信号与初级侧调节功率转换器的输出电压相关。 半信号的导通周期是开关信号的导通周期的一半。 开关电流信号在半信号的下降沿进行采样。

公开(公告)号：US20070200633A1

公开(公告)日：2007-08-30

申请号：US11357044

申请日：2006-02-21

Applicant: Cheng-Sung Chen ,  Ta-Yung Yang ,  Rui-Hong Lu

Inventor： Cheng-Sung Chen ,  Ta-Yung Yang ,  Rui-Hong Lu

IPC: H03L7/085

CPC classification number: H03L7/00 ,  H02M3/156 ,  H02M3/1563

Abstract: The present invention provides a synchronous switching control circuit for variable switching frequency power converters. It comprises a first circuit to generate a first signal in response to an input synchronous signal of a power converter. A second circuit is coupled to the first circuit to generate a second signal in accordance with the frequency of the first signal. Only when the first signal is operated in a specific frequency range, the synchronous operation is allowed. An oscillation circuit is connected to the first circuit and the second circuit to receive the first signal and the second signal to generate an oscillation signal. The oscillation signal is utilized to enable the switching signal of the power converter. The switching signal is thus synchronized with the input synchronous signal in response to the enable of the second signal. Otherwise, the switching signal will be free running.

Abstract translation: 本发明提供一种用于可变开关频率功率转换器的同步开关控制电路。 它包括响应于功率转换器的输入同步信号产生第一信号的第一电路。 第二电路耦合到第一电路，以根据第一信号的频率产生第二信号。 只有当第一个信号在特定频率范围内工作时，允许同步操作。 振荡电路连接到第一电路和第二电路以接收第一信号和第二信号以产生振荡信号。 振荡信号用于使能功率转换器的开关信号。 因此，响应于第二信号的使能，切换信号与输入同步信号同步。 否则，切换信号将自由运行。

公开(公告)号：US20070109820A1

公开(公告)日：2007-05-17

申请号：US11274125

申请日：2005-11-16

Applicant: Ta-Yung Yang ,  Rui-Hong Lu ,  Chuh-Ching Li ,  Feng-Cheng Tsao ,  Tso-Min Chen

Inventor： Ta-Yung Yang ,  Rui-Hong Lu ,  Chuh-Ching Li ,  Feng-Cheng Tsao ,  Tso-Min Chen

IPC: H02M3/335

CPC classification number: H02M3/33507 ,  Y02B70/1433

Abstract: The present invention provides a power converter having a phase lock circuit for quasi-resonant soft switching. The power converter includes a first circuit coupled to the feedback signal to generate a switching signal for switching a switching device and regulating the output of the power converter. A second circuit is coupled to an auxiliary winding of the transformer for generating a voltage signal in response to the voltage of the transformer. A phase lock circuit generates a control signal to enable the switching signal in accordance with the voltage signal. The switching signal further turns on the switching device in response to a valley voltage across the switching device.

Abstract translation: 本发明提供一种具有用于准谐振软开关的锁相电路的功率转换器。 功率转换器包括耦合到反馈信号的第一电路以产生用于切换开关装置并调节功率转换器的输出的开关信号。 第二电路耦合到变压器的辅助绕组，以响应于变压器的电压产生电压信号。 锁相电路根据电压信号产生控制信号以使能切换信号。 开关信号进一步响应于开关器件上的谷值电压而导通开关器件。

公开(公告)号：US06418002B1

公开(公告)日：2002-07-09

申请号：US09607029

申请日：2000-06-29

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

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

IPC: H02H300

CPC classification number: G06F1/28 ,  G06F1/30 ,  H02H3/20 ,  H02H3/207 ,  H02H3/247 ,  H02H7/1227

Abstract: A power supply supervisor having a line voltage detector is used to monitor a power supply. A peak detector detects the line voltage by measuring the PWM switching signal in the secondary of the transformer. A logic circuit couples to the peak detector and the under-voltage detector, etc. to generate a power good (PG) signal when the power supply outputs meet the specifications. The logic circuit outputs a FAIL signal to turn off the power supply when an abnormal situation, such as over-voltage, occurs. Furthermore, when AC power is lost or turned off, the logic circuit detects a low line voltage and generates a power-down-warning PG signal before the output voltages are disabled. When an abnormal situation occurs before the low line voltage is detected, the logic circuit latches the power supply in a power off state. If the abnormal situation occurs after the low line voltage is detected, the logic circuit turns off the power outputs, but disables the latch function. In the meantime, a time delay circuit is applied to postpone the power off status, in which the time delay limits the duty cycle of power outputs and protects the power supply from over-stress damage.

Abstract translation: 具有线路电压检测器的电源管理器用于监视电源。 峰值检测器通过测量变压器次级中的PWM开关信号来检测线路电压。 当电源输出满足规格时，逻辑电路耦合到峰值检测器和欠压检测器等，以产生电源良好（PG）信号。 当发生异常情况（如过电压）时，逻辑电路输出FAIL信号以关闭电源。 此外，当交流电源丢失或关闭时，逻辑电路检测到低电压电压，并且在禁用输出电压之前产生掉电警告PG信号。 当在检测到低线电压之前发生异常情况时，逻辑电路将电源锁定在断电状态。 如果在检测到低电压电压后发生异常情况，则逻辑电路关闭电源输出，但禁用锁存功能。 同时延时电路用于推迟断电状态，延时限制电源输出的占空比，保护电源免受过度应力损坏。