公开(公告)号：US08907592B2

公开(公告)日：2014-12-09

申请号：US13048730

申请日：2011-03-15

Applicant: Jin Hu ,  Lei Du ,  Yuancheng Ren ,  Junming Zhang ,  Zhijun Ye

Inventor： Jin Hu ,  Lei Du ,  Yuancheng Ren ,  Junming Zhang ,  Zhijun Ye

IPC: H05B37/02 ,  H05B33/08

CPC classification number: H05B33/0827 ,  H05B33/0809 ,  H05B33/0812 ,  Y02B20/341

Abstract: Embodiments of LED driver circuits and the associated methods are disclosed herein. In one embodiment, the LED driver circuit comprises a switch-mode converter, a controller, a feedback circuit, and a gating circuit. The feedback circuit includes a current balance circuit. The gating circuit is responsive to both a current feedback signal and a voltage feedback signal and is configured to select one of them as the feedback signal.

Abstract translation: LED驱动器电路和相关方法的实施例在此公开。 在一个实施例中，LED驱动器电路包括开关模式转换器，控制器，反馈电路和门控电路。 反馈电路包括电流平衡电路。 门控电路响应于电流反馈信号和电压反馈信号，并且被配置为选择它们中的一个作为反馈信号。

公开(公告)号：US08645753B2

公开(公告)日：2014-02-04

申请号：US13335643

申请日：2011-12-22

Applicant: Eric Yang ,  ZhengXing Li ,  Yuancheng Ren

Inventor： Eric Yang ,  ZhengXing Li ,  Yuancheng Ren

IPC: G06F11/00

CPC classification number: H02M3/156 ,  H02H9/001

Abstract: The present disclosure discloses a power system with hot-swap with a buck converter. The power system comprises a front stage, a hot-swap stage and a load stage; wherein the hot-swap stage comprises: a buck converter having a switch operate at ON/OFF state to provide a desired output voltage to the load stage with low power loss and optimized thermal design.

Abstract translation: 本公开公开了一种具有降压转换器的热插拔的电力系统。 电力系统包括前级，热插拔级和负载级; 其中所述热插拔级包括：降压转换器，其具有在ON / OFF状态下操作的开关，以便以低功率损耗和优化的热设计向所述负载级提供期望的输出电压。

公开(公告)号：US20120293141A1

公开(公告)日：2012-11-22

申请号：US13474545

申请日：2012-05-17

Applicant: Bo Zhang ,  Yuancheng Ren ,  Junming Zhang ,  James C. Moyer ,  Eric Yang

Inventor： Bo Zhang ,  Yuancheng Ren ,  Junming Zhang ,  James C. Moyer ,  Eric Yang

IPC: G05F1/70

CPC classification number: H02M1/4233 ,  H02M1/083 ,  H02M2001/0054 ,  Y02B70/126 ,  Y02B70/1491

Abstract: A bridgeless PFC (power factor correction) converter with improved efficiency is disclosed. The bridgeless PFC converter comprises: input terminals configured to receive an input AC power supply; an output terminal configured to provide power supply; a high frequency bridge arm comprising a first switch and a third switch coupled between the output terminal and a ground node; a low frequency bridge arm comprising a second switch and a fourth switch coupled between the output terminal and the ground node; an inductor coupled between the input AC power supply and the high frequency bridge arm; and a control circuit configured to control the switching of switches in the high frequency bridge arm and the low frequency bridge arm.

Abstract translation: 公开了一种提高效率的无桥PFC（功率因数校正）转换器。 所述无桥PFC转换器包括：被配置为接收输入AC电源的输入端; 输出端子，被配置为提供电源; 高频桥臂，包括耦合在输出端和接地节点之间的第一开关和第三开关; 低频桥臂，包括耦合在所述输出端子和所述接地节点之间的第二开关和第四开关; 耦合在输入交流电源和高频桥臂之间的电感器; 以及控制电路，被配置为控制高频桥臂和低频桥臂中的开关的切换。

公开(公告)号：US08164218B2

公开(公告)日：2012-04-24

申请号：US12505399

申请日：2009-07-17

Applicant: Naixing Kuang ,  Lei Du ,  Junming Zhang ,  Yuancheng Ren

Inventor： Naixing Kuang ,  Lei Du ,  Junming Zhang ,  Yuancheng Ren

IPC: H02J1/10 ,  G05F1/577

CPC classification number: H02M3/158 ,  H02M2001/009 ,  Y10T307/414 ,  Y10T307/50

Abstract: SIMO power converters and associated methods of control are disclosed herein. In one embodiment, a method of converting a signal input signal into multiple output signals includes supplying power to a plurality of output terminals based on a signal input signal, detecting a voltage at individual output terminals, determining an arithmetic relationship between the detected voltages of the output terminals, and adjusting the power supplied to the plurality of output terminals based at least in part on the determined arithmetic relationship between the detected voltages of the output terminals.

Abstract translation: 本文公开了SIMO功率转换器和相关联的控制方法。 在一个实施例中，将信号输入信号转换为多个输出信号的方法包括基于信号输入信号向多个输出端子供电，检测各个输出端子处的电压，确定检测到的电压的算术关系 输出端子，并且至少部分地基于所确定的输出端子的检测电压之间的算术关系来调整提供给多个输出端子的功率。

公开(公告)号：US20120001603A1

公开(公告)日：2012-01-05

申请号：US13175543

申请日：2011-07-01

Applicant: Qian Ouyang ,  Yuancheng Ren

Inventor： Qian Ouyang ,  Yuancheng Ren

IPC: G05F1/10

CPC classification number: H02M3/1588 ,  H02M2001/0025 ,  Y02B70/1466

Abstract: A voltage regulator with adaptive hysteretic control. The voltage regulator may include a top switch (e.g., MOSFET) configured to couple a power supply supplying an input voltage to a load. An adaptive hysteretic control circuit of the voltage regulator may turn on the top switch when the feedback voltage reaches the low threshold and turn off the top switch when the feedback voltage reaches the high threshold. The adaptive hysteretic control circuit may adjust the upper and lower threshold to make the voltage regulator working like a constant on time control circuit in steady state. When a step down transient happens, the top switch could be turned off when the output voltage reaches the upper threshold, and when a step up transient happens, the top switch could be turned on when the output voltage reaches the lower threshold, it makes the voltage regulator working like a hysteretic control circuit.

Abstract translation: 具有自适应迟滞控制的电压调节器。 电压调节器可以包括被配置为将提供输入电压的电源耦合到负载的顶部开关（例如，MOSFET）。 当反馈电压达到低阈值时，电压调节器的自适应迟滞控制电路可以接通顶部开关，并且当反馈电压达到高阈值时关闭顶部开关。 自适应迟滞控制电路可以调节上限和下限阈值，使电压调节器工作在恒定的导通时间控制电路处于稳定状态。 当降压瞬变发生时，当输出电压达到上限阈值时，顶部开关可以关闭，当升压瞬变发生时，当输出电压达到下限阈值时，顶部开关可以导通， 电压调节器像滞后控制电路一样工作。

公开(公告)号：US20110285301A1

公开(公告)日：2011-11-24

申请号：US13110719

申请日：2011-05-18

Applicant: Naixing Kuang ,  Lei Du ,  Junming Zhang ,  Yuancheng Ren

Inventor： Naixing Kuang ,  Lei Du ,  Junming Zhang ,  Yuancheng Ren

IPC: H05B37/02

CPC classification number: H05B33/0809 ,  H05B33/0845

Abstract: 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.

Abstract translation: 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：US08063570B2

公开(公告)日：2011-11-22

申请号：US12166140

申请日：2008-07-01

Applicant: Junming Zhang ,  Yuancheng Ren ,  Kaiwei Yao ,  Eric Yang

Inventor： Junming Zhang ,  Yuancheng Ren ,  Kaiwei Yao ,  Eric Yang

IPC: H05B37/02 ,  H05B41/36

CPC classification number: H05B41/2855

Abstract: A CCFL inverter circuit integrates a feedback circuit and protection circuit together. For both in-phase and out-of-phase applications, sensed lamp voltages can be used for open lamp and short lamp detection and sensed currents can be used for open lamp detection. The driving circuit adjusts the open lamp frequency by using a duty cycle control signal so that the driving circuit can always achieve the desired lamp voltage gain.

Abstract translation: CCFL逆变电路将反馈电路和保护电路集成在一起。 对于同相和异相应用，感测的灯电压可用于开灯和短灯检测，并且感测电流可用于开灯检测。 驱动电路通过使用占空比控制信号来调节开路频率，使得驱动电路总能达到期望的灯电压增益。

公开(公告)号：US20110228570A1

公开(公告)日：2011-09-22

申请号：US13048660

申请日：2011-03-15

Applicant: En Li ,  Junming Zhang ,  Yuancheng Ren

Inventor： En Li ,  Junming Zhang ,  Yuancheng Ren

IPC: H02M3/335

CPC classification number: H02M3/156

Abstract: Switching mode power supplies with primary side control and associated methods of control are disclosed. In one embodiment, a signal with input voltage information and a signal with both input voltage information and output voltage information are provided to a subtracter to generate a feedback signal that is indicative of the output voltage. The feedback signal is then used to control the switching mode power supply.

Abstract translation: 公开了具有初级侧控制和相关控制方法的开关电源。 在一个实施例中，具有输入电压信息的信号和具有输入电压信息和输出电压信息两者的信号被提供给减法器以产生指示输出电压的反馈信号。 然后将反馈信号用于控制开关模式电源。

公开(公告)号：US20110110123A1

公开(公告)日：2011-05-12

申请号：US12944568

申请日：2010-11-11

Applicant: En Li ,  Junming Zhang ,  Yuancheng Ren

Inventor： En Li ,  Junming Zhang ,  Yuancheng Ren

IPC: H02M3/335

CPC classification number: H02M3/33507 ,  H02M1/44 ,  H02M3/33523

Abstract: 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.

Abstract translation: 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：US20110002068A1

公开(公告)日：2011-01-06

申请号：US12829890

申请日：2010-07-02

Applicant: Jin Hu ,  Junming Zhang ,  Yuancheng Ren

Inventor： Jin Hu ,  Junming Zhang ,  Yuancheng Ren

IPC: H02H5/00

CPC classification number: H02M1/32 ,  H02M3/33523

Abstract: A switching regulator with fault protection and method thereof. The switching regulator comprises a switching circuit, a control circuit, a fault detection circuit and a fault timer. The fault detection circuit is electrically coupled to the switching circuit to detect whether a fault condition exists and generate a fault signal accordingly. The fault timer starts to time once the fault signal becomes valid, and is reset when the fault signal becomes invalid. If the fault time reaches a first time threshold, the control circuit is disabled, and the switch in the switching circuit is turned off.

Abstract translation: 一种具有故障保护的开关调节器及其方法。 开关调节器包括开关电路，控制电路，故障检测电路和故障定时器。 故障检测电路电耦合到开关电路以检测是否存在故障状况并相应地产生故障信号。 一旦故障信号有效，故障定时器开始计时，当故障信号无效时复位。 如果故障时间达到第一时间阈值，则禁止控制电路，并切换开关电路中的开关。