公开(公告)号：US08593841B2

公开(公告)日：2013-11-26

申请号：US13289274

申请日：2011-11-04

申请人： Siran Wang ,  Yuancheng Ren ,  Junming Zhang ,  En Li

发明人： Siran Wang ,  Yuancheng Ren ,  Junming Zhang ,  En Li

IPC分类号： H02J3/12 ,  G05F1/00 ,  H02M3/335

CPC分类号： H02M3/335

摘要： A compensation circuit and method for constant current regulation of switching mode power supply are disclosed. The ringing waveform of a feedback signal, indicative of the output current of the power supply, causes error. To eliminate the error, a current source charges a capacitor in response to a demagnetizing oscillation signal indicative of the error caused by the ringing waveform of the feedback signal. The voltage across the capacitor is compared to a reference signal to generate a more accurate signal indicative of the conductive time of a secondary diode in a secondary winding of the switching mode power supply. This more accurate signal is inputted to a logic circuit to generate a constant current control signal to control a power switch of the power supply.

摘要翻译： 公开了一种用于开关电源的恒流调节的补偿电路和方法。 指示电源的输出电流的反馈信号的振铃波形引起误差。 为了消除误差，电流源响应于指示由反馈信号的振铃波形引起的误差的去磁振荡信号对电容器充电。 将电容器两端的电压与参考信号进行比较，以产生指示开关模式电源的次级绕组中次级二极管的导通时间的更准确的信号。 该更准确的信号被输入到逻辑电路以产生恒定电流控制信号以控制电源的电源开关。

公开(公告)号：US08581518B2

公开(公告)日：2013-11-12

申请号：US13110719

申请日：2011-05-18

申请人： Naixing Kuang ,  Lei Du ,  Junming Zhang ,  Yuancheng Ren

发明人： Naixing Kuang ,  Lei Du ,  Junming Zhang ,  Yuancheng Ren

IPC分类号： H05B37/02

CPC分类号： H05B33/0809 ,  H05B33/0845

摘要： Triac dimmer compatible switching mode power supplies used as LED drivers are disclosed herein. A PFC controller is configured in the switching mode power supplies. With the PFC controller, the current keeping the triac in the on-state is supplied by the DC/DC converter, and the LC resonance is reduced.

摘要翻译： 本文公开了用作LED驱动器的Triac调光器兼容的开关模式电源。 在开关模式电源中配置了PFC控制器。 使用PFC控制器，保持三端双向可控硅开关电流的电流由DC / DC转换器提供，LC谐振减小。

公开(公告)号：US08498135B2

公开(公告)日：2013-07-30

申请号：US12944568

申请日：2010-11-11

申请人： En Li ,  Junming Zhang ,  Yuancheng Ren

发明人： En Li ,  Junming Zhang ,  Yuancheng Ren

IPC分类号： H02M3/335

CPC分类号： H02M3/33507 ,  H02M1/44 ,  H02M3/33523

摘要： Embodiments of circuits and methods for a switching mode power supply are described in detail herein. In one embodiment, a switching mode power supply includes a transformer having a primary winding and a secondary winding to supply power to a load, a feedback circuit that generates a feedback signal that varies in relation to the load on the secondary winding, a switching circuit coupled to the primary winding to control current flow through the primary winding, and a control circuit coupled to the switching circuit to control the on/off status of switching circuit in response to the feedback signal and the current flow through the primary winding. The control circuit comprises a spectrum shaping circuit configured to generate a spectrum shaping signal in response to the feedback signal. The spectrum shaping signal can then be used to regulate the switching frequency and the spectrum shaping range.

摘要翻译： 本文详细描述了开关模式电源的电路和方法的实施例。 在一个实施例中，开关模式电源包括具有初级绕组和次级绕组以向负载供电的变压器，产生相对于次级绕组上的负载变化的反馈信号的反馈电路，开关电路 耦合到初级绕组以控制通过初级绕组的电流;以及控制电路，其耦合到开关电路，以响应于反馈信号和通过初级绕组的电流来控制开关电路的接通/断开状态。 该控制电路包括频谱整形电路，该频谱整形电路被配置为响应于反馈信号产生频谱整形信号。 频谱整形信号可用于调节开关频率和频谱整形范围。

公开(公告)号：US08472217B2

公开(公告)日：2013-06-25

申请号：US12720396

申请日：2010-03-09

申请人： En Li ,  Junming Zhang ,  Yuancheng Ren

发明人： En Li ,  Junming Zhang ,  Yuancheng Ren

IPC分类号： H02H7/122

CPC分类号： H02M3/33523

摘要： A switching mode power supply with a multi-mode controller is provided. The switching mode power supply may include a transformer having a primary winding and a secondary winding to supply power to a load. A feedback circuit may be included to generate a feedback signal that varies in relation to the load on the secondary winding. The multi-mode controller may include a switching circuit, a frequency control circuit and a current limiting circuit. The switching circuit may be coupled to the primary winding to control current flow through the primary winding. The frequency control circuit may control a switching frequency of the switching circuit based on the feedback signal. The current limiting circuit may limit current flow through the primary winding by causing the switching circuit to suspend current flow through the primary winding when the current reaches a peak current limit that is set based on the feedback signal.

摘要翻译： 提供了具有多模式控制器的开关模式电源。 开关模式电源可以包括具有初级绕组和次级绕组以向负载供电的变压器。 可以包括反馈电路以产生相对于次级绕组上的负载而变化的反馈信号。 多模式控制器可以包括开关电路，频率控制电路和限流电路。 开关电路可以耦合到初级绕组以控制通过初级绕组的电流。 频率控制电路可以基于反馈信号来控制开关电路的开关频率。 当电流达到基于反馈信号设定的峰值电流限制时，限流电路可以通过使开关电路暂停通过初级绕组的电流来限制通过初级绕组的电流。

公开(公告)号：US08247984B2

公开(公告)日：2012-08-21

申请号：US12755341

申请日：2010-04-06

申请人： Yuancheng Ren ,  Lei Du ,  Yong Huang

发明人： Yuancheng Ren ,  Lei Du ,  Yong Huang

IPC分类号： H05B37/02

CPC分类号： H05B33/0818

摘要： An LED circuit is disclosed. The circuit senses the average current flowing through the LED. The sensed signal is compensated and modulated. The modulated signal is then used to control the ON/OFF state of a switch that supplies power to the LED.

摘要翻译： 公开了一种LED电路。 该电路感测流过LED的平均电流。 感测的信号被补偿和调制。 然后调制信号用于控制向LED供电的开关的ON / OFF状态。

公开(公告)号：US20110227493A1

公开(公告)日：2011-09-22

申请号：US13048699

申请日：2011-03-15

申请人： Lei Du ,  Bairen Liu ,  Kaiwei Yao ,  Junming Zhang ,  Yuancheng Ren

发明人： Lei Du ,  Bairen Liu ,  Kaiwei Yao ,  Junming Zhang ,  Yuancheng Ren

IPC分类号： H05B37/02

CPC分类号： H05B33/0818 ,  H05B33/0848

摘要： Light emitting diode (LED) dimming and driver systems and associated methods of control are disclosed herein. In one embodiment, a system comprises a PFC stage and an LED driver stage. The LED driver stage comprises an isolated converter and a controller responsive to a dimming signal to dim LED strings for backlight. The controller also regulates an output current of the isolated converter.

摘要翻译： 本文公开了发光二极管（LED）调光和驱动器系统及相关的控制方法。 在一个实施例中，系统包括PFC级和LED驱动级。 LED驱动器级包括隔离转换器和响应于调光信号的控制器以使用于背光的LED灯串变暗。 控制器还调节隔离转换器的输出电流。

公开(公告)号：US20110199793A1

公开(公告)日：2011-08-18

申请号：US13016592

申请日：2011-01-28

申请人： Naixing Kuang ,  Lei Du ,  Junming Zhang ,  Yuancheng Ren

发明人： Naixing Kuang ,  Lei Du ,  Junming Zhang ,  Yuancheng Ren

IPC分类号： H02M3/335

CPC分类号： H05B33/0815

摘要： The present technology are directed to switching mode power supplies with primary side control. In one embodiment, the switching mode power supply provides an equivalent current signal which represents a load current. The equivalent current signal is then used to control a switching circuit in the switching mode power supply.

摘要翻译： 本技术涉及具有初级侧控制的开关电源。 在一个实施例中，开关模式电源提供表示负载电流的等效电流信号。 然后，等效电流信号用于控制开关电源中的开关电路。

公开(公告)号：US20110182095A1

公开(公告)日：2011-07-28

申请号：US13010528

申请日：2011-01-20

申请人： Eric Yang ,  Yuancheng Ren ,  Junming Zhang ,  Lei Miao

发明人： Eric Yang ,  Yuancheng Ren ,  Junming Zhang ,  Lei Miao

IPC分类号： H02M7/217

CPC分类号： H02M7/217 ,  H01L24/48 ,  H01L24/49 ,  H01L25/072 ,  H01L25/074 ,  H01L2224/48091 ,  H01L2224/48137 ,  H01L2224/48145 ,  H01L2224/48177 ,  H01L2224/48247 ,  H01L2224/49113 ,  H01L2224/49171 ,  H01L2924/00014 ,  H01L2924/13091 ,  H01L2924/14 ,  H01L2924/19041 ,  H02M7/003 ,  H01L2924/00 ,  H01L2224/45099 ,  H01L2224/45015 ,  H01L2924/207 ,  H01L2924/00012

摘要： The present technology discloses a package for a synchronous rectifier module, and also discloses synchronous rectification circuits and power supply adapters. The synchronous rectification circuit co-packages the synchronous rectifier and the driver into one single package. The single package simplifies the external circuitry and reduces potential electromagnetic interferences.

摘要翻译： 本技术公开了一种用于同步整流器模块的封装，还公开了同步整流电路和电源适配器。 同步整流电路将同步整流器和驱动器共同封装成单个封装。 单个封装简化了外部电路并减少了潜在的电磁干扰。

公开(公告)号：US20110084677A1

公开(公告)日：2011-04-14

申请号：US12873072

申请日：2010-08-31

申请人： Yang Shi ,  Junming Zhang ,  Yuancheng Ren

发明人： Yang Shi ,  Junming Zhang ,  Yuancheng Ren

IPC分类号： G05F1/10

CPC分类号： H02M3/156 ,  H02M3/33507 ,  H02M2001/0032 ,  Y02B70/16

摘要： Switching mode power supplies (SMPS) that can operate in a control mode for a normal load condition and operate with a burst-mode controller for a light load condition are disclosed herein. In one embodiment, a method for controlling the switching mode power supply includes when the load is in a light load condition, the switching mode power supply is controlled by a burst-mode controller.

摘要翻译： 这里公开了可以在正常负载条件的控制模式下操作并且用于轻负载条件的突发模式控制器操作的开关模式电源（SMPS）。 在一个实施例中，用于控制开关模式电源的方法包括当负载处于轻负载状态时，开关模式电源由突发模式控制器控制。

公开(公告)号：US07915833B2

公开(公告)日：2011-03-29

申请号：US12036778

申请日：2008-02-25

申请人： Wei Chen ,  Yuancheng Ren ,  Junming Zhang ,  Lei Du

发明人： Wei Chen ,  Yuancheng Ren ,  Junming Zhang ,  Lei Du

IPC分类号： H05B37/02

CPC分类号： H05B41/2821 ,  H05B41/2824

摘要： An inverter comprising a low-side switching element in series with a first primary winding; a high-side switching element in series with a second primary winding, where the combination of the low-side switching element and first primary winding is connected in parallel with the combination of the high-side switching element and the second primary winding; and a clamping capacitor having one terminal connected to the first primary winding and having a second terminal connected to the second primary winding. Other embodiments are described and claimed.

摘要翻译： 一种逆变器，包括与第一初级绕组串联的低侧开关元件; 高侧开关元件与第二初级绕组串联的高侧开关元件，其中低侧开关元件和第一初级绕组的组合与高侧开关元件和第二初级绕组的组合并联连接; 以及钳位电容器，其具有连接到所述第一初级绕组的一个端子，并且具有连接到所述第二初级绕组的第二端子。 描述和要求保护其他实施例。