公开(公告)号：US09148933B2

公开(公告)日：2015-09-29

申请号：US13813723

申请日：2010-12-16

Applicant: Liang'an Ge

Inventor： Liang'an Ge

IPC: H05B41/00 ,  H05B37/02 ,  H05B33/08

CPC classification number: H05B37/02 ,  H05B33/0815 ,  H05B33/0887

Abstract: The present invention discloses a power supply circuit for multi-path light-emitting diode (LED) loads. The two ports of the second diode are connected in parallel with the first switch tube, and the two ports of the forth diode are connected in parallel with the second switch tube. The conduction mode of the second and forth diodes is controlled by controlling the switch status of the first and second switch tubes. When the system is on a normal state, the first and second switch tubes are both switched off. When the load output of any path needs to be turned off, the corresponding switch tube should be controlled to switch on, which makes the diode connected in parallel with the switch tube short-circuited. The present invention can avoid a strong impulse current produced in filtering capacitor when the load of any path is directly short-circuited. Therefore, the present invention can reduce the current stress in circuits, improve the reliability of circuits, and reduce the cost.

Abstract translation: 本发明公开了一种用于多路径发光二极管（LED）负载的电源电路。 第二二极管的两个端口与第一开关管并联连接，并且第二二极管的两个端口与第二开关管并联连接。 通过控制第一和第二开关管的开关状态来控制第二和第二二极管的导通模式。 当系统处于正常状态时，第一和第二开关管都断开。 当任何路径的负载输出需要关闭时，相应的开关管应被控制为接通，这使二极管与开关管并联连接短路。 本发明可以避免当任何路径的负载被直接短路时在滤波电容器中产生的强脉冲电流。 因此，本发明可以减小电路中的电流应力，提高电路的可靠性，降低成本。

公开(公告)号：US20130154482A1

公开(公告)日：2013-06-20

申请号：US13814771

申请日：2010-12-31

Applicant: Liang'an Ge ,  Xiaoli Yao

Inventor： Liang'an Ge ,  Xiaoli Yao

IPC: H05B37/02

CPC classification number: H05B37/02 ,  H05B33/0815 ,  H05B33/0887 ,  Y02B20/341

Abstract: A open-circuit protection circuit of a constant current driving circuit for light emitting diodes is disclosed, which includes that: a transformer (Ta1), which has at least one secondary winding (WT1), is connected to at least two load branches (A1,A2); a commutating loop is composed of each load branches (A1, A2) and one secondary winding (WT1), wherein the secondary winding (WT1) has tap ends; a current sharing transformer (T1) is set in two neighbor load branch (A1, A2); each load branch (A1, A2) is separately connected to one open-circuit protection module (10). The open circuit protection module (10) includes: a detection control unit (101), used for outputting a control signal to a processing unit (102) when the detection control unit detects that the output voltages of each load branch (A1, A2) or the voltages proportionate to the output voltages are not less than a corresponding preset threshold; the processing unit (102), used for shorting one secondary sub winding (WT11, WT12) in the corresponding load branch (A1, A2) and a sharing current winding (W1) of the current sharing transformer (T1) in series with the secondary sub winding (WT11, WT12) when receiving the control signal. With the embodiments of the present invention, the cost and the bulk of the current sharing transformer (T1) can be reduced.

Abstract translation: 公开了一种用于发光二极管的恒流驱动电路的开路保护电路，其包括：具有至少一个次级绕组（WT1）的变压器（Ta1）连接到至少两个负载分支（A1 ，A2）; 一个换向回路由每个负载分支（A1，A2）和一个次级绕组（WT1）组成，其中次级绕组（WT1）具有抽头端; 在两个相邻负载分支（A1，A2）中设置电流共享变压器（T1）; 每个负载分支（A1，A2）分别连接到一个开路保护模块（10）。 开路保护模块（10）包括：检测控制单元（101），用于当检测控制单元检测到每个负载分支（A1，A2）的输出电压时，将控制信号输出到处理单元（102） 或与输出电压成比例的电压不小于相应的预设阈值; 用于将相应的负载分支（A1，A2）中的一个次级次级绕组（WT11，WT12）与电流共享变压器（T1）的共享电流绕组（W1）与次级系统串联的短路处理单元（102） 子绕组（WT11，WT12）接收到控制信号。 利用本发明的实施例，可以减小电流共享变压器（T1）的成本和体积。

公开(公告)号：US08866394B2

公开(公告)日：2014-10-21

申请号：US13519476

申请日：2010-12-09

Applicant: Xinke Wu ,  Liang'an Ge

Inventor： Xinke Wu ,  Liang'an Ge

IPC: H05B37/00 ,  H05B33/08 ,  H05B37/02

CPC classification number: H05B33/0815 ,  H05B33/0818 ,  H05B37/02

Abstract: A drive circuit for realizing accurate constant current of multiple LEDs is disclosed. The drive circuit comprises a high-frequency impulse Alternating Current (AC) power carrying N circuit units with same structure. Each of the circuit unit comprises a rectifier filter circuit, a blocking capacitor C1 and two LED loads. The rectifier filter circuit comprises two independent half-wave rectifier circuits, and two filter capacitors. Each of the two half-wave rectifier circuits comprises two diodes connected in series to supply power for the corresponding LED load. The filter capacitor is connected in parallel with the two ends of an LED load respectively, and the blocking capacitor C1 is connected in series with the input end of the rectifier filter circuit. The circuit also comprises N−1 equalizing transformers, each of which connects in series between two adjacent circuit units. A drive circuit for constant output current of multiple LEDs with high efficient, low cost and great flow equalization is provided in the embodiment of the invention. When the differential voltage of the two LED loads is large, high efficiency can also be achieved.

Abstract translation: 公开了一种用于实现多个LED的精确恒定电流的驱动电路。 驱动电路包括具有相同结构的N个电路单元的高频脉冲交流（AC）电力。 每个电路单元包括整流滤波电路，阻塞电容器C1和两个LED负载。 整流滤波电路包括两个独立的半波整流电路和两个滤波电容器。 两个半波整流电路中的每一个包括串联连接的两个二极管，用于为相应的LED负载供电。 滤波电容器分别与LED负载的两端并联连接，隔离电容器C1与整流滤波电路的输入端串联连接。 电路还包括N-1个均衡变压器，每个变压器串联连接在两个相邻的电路单元之间。 在本发明的实施例中提供了用于具有高效，低成本和大流量均衡的多个LED的恒定输出电流的驱动电路。 当两个LED负载的差分电压大时，也可以实现高效率。

公开(公告)号：US20140191670A1

公开(公告)日：2014-07-10

申请号：US14000501

申请日：2011-07-21

Applicant: Liang'an Ge ,  Xiaoli Yao

Inventor： Liang'an Ge ,  Xiaoli Yao

IPC: H05B33/08

CPC classification number: H05B33/0815 ,  H05B33/0827 ,  H05B33/0866 ,  Y02B20/347

Abstract: Provided is a circuit for adjusting light-emitting diode (LED) current; the circuit comprises: a single-output constant current source (21), a multi-path LED output circuit (22) and a control bus (20) connected to the multi-path LED output circuit (22); any given LED output circuit comprises: a load circuit (23), an adjustment circuit (24), a current regulation circuit (25) and an adjustment control circuit (26). The circuit for adjusting LED current provided in the technical solution of the present invention adjusts the current of each LED output circuit via the load circuit, the adjustment circuit, the current regulation circuit and the adjustment control circuit, thus adjusting characteristic parameters such as color, color temperature, color rendering index, brightness and the like of the LED light source, thereby avoiding the problem of high cost caused by using multi-path constant current DC/DC circuit to adjust the current of each path.

Abstract translation: 提供了用于调节发光二极管（LED）电流的电路; 该电路包括：单输出恒流源（21），连接到多路LED输出电路（22）的多路LED输出电路（22）和控制总线（20）。 任何给定的LED输出电路包括：负载电路（23），调节电路（24），电流调节电路（25）和调节控制电路（26）。 本发明的技术方案中提供的用于调节LED电流的电路通过负载电路，调节电路，电流调节电路和调节控制电路调节每个LED输出电路的电流，从而调整诸如颜色， 色温，显色指数，亮度等，从而避免了使用多路恒流DC / DC电路调节各路径的电流引起的成本高的问题。

公开(公告)号：US08629664B2

公开(公告)日：2014-01-14

申请号：US13511059

申请日：2010-11-15

Applicant: Liang'an Ge ,  Xiaoli Yao ,  Guichao Hua ,  Xinke Wu ,  Lijun Ren

Inventor： Liang'an Ge ,  Xiaoli Yao ,  Guichao Hua ,  Xinke Wu ,  Lijun Ren

IPC: H02M3/24 ,  G05F1/14

CPC classification number: H05B33/0815 ,  H02M3/33523 ,  H02M2001/0064 ,  H02M2001/008 ,  H05B33/0827 ,  Y10T307/414

Abstract: A multi-path constant current drive circuit includes a DC/AC converter, a main transformer and at least two rectifying and filtering units. The main transformer includes at least one assistant side winding with a tap; together with the assistant side winding of the main transformer, each of the at least two rectifying and filtering units respectively forms a power supply loop; each power supply loop includes a first rectifying loop and a second rectifying loop, which are relatively used for the rectification of the positive and the negative half-cycle alternating voltage; a current-equalizing transformer is arranged between the adjacent first power supply loop and second power supply loop, the windings of the current-equalizing transformer are respectively in the rectifying loops contained in the first power supply loop and the second power supply loop, thus realizing the current equalization between the different rectifying loops in which the adjacent rectifying and filtering units are contained. The multi-path constant current drive circuit performs a good current equalization, and can reduce the volume of the current-equalizing transformer and decrease the cost.

Abstract translation: 多路恒流驱动电路包括DC / AC转换器，主变压器和至少两个整流滤波单元。 主变压器包括至少一个带有水龙头的辅助侧绕组; 连同主变压器的辅助侧绕组，至少两个整流滤波单元中的每一个分别形成电源回路; 每个电源回路包括第一整流回路和第二整流回路，其相对用于正和负半周期交流电压的整流; 在相邻的第一电源回路和第二电源回路之间布置有电流均衡变压器，电流均衡变压器的绕组分别在包含在第一电源回路和第二电源回路中的整流回路中，从而实现 其中包含相邻整流和滤波单元的不同整流回路之间的电流均衡。 多路恒流驱动电路实现良好的电流均衡，可以减小电流均衡变压器的体积，降低成本。

公开(公告)号：US20130285625A1

公开(公告)日：2013-10-31

申请号：US13995817

申请日：2011-08-23

Applicant: Liang'an Ge ,  Guichao Hua ,  Xiaoli Yao ,  Yang Liu

Inventor： Liang'an Ge ,  Guichao Hua ,  Xiaoli Yao ,  Yang Liu

IPC: H05B33/08

CPC classification number: H05B33/0815 ,  H05B33/0827 ,  Y02B20/347

Abstract: A load driving device and system, and a limiting point control method and device. The load driving device comprising: a voltage/current regulative main circuit placed under the control of an output current controller, for use in conducting a voltage conversion on an input voltage, and in supplying electric power to a subsequent load unit; a sampling unit connected to an output terminal of the main circuit, for use in sampling an output feature parameter of the main circuit; the output current controller, for use in controlling a limiting point of the main circuit, and on the basis of the adjustment direction of the limiting point and on changes of the output feature parameters of the main circuit before and after an adjustment, determining a steady working point for the main circuit, and controlling the main circuit to work at the steady working point. The load driving device and system enable an increase in driver reliability and a reduction in circuit complexity.

Abstract translation: 负载驱动装置和系统，以及限制点控制方法和装置。 所述负载驱动装置包括：电压/电流调节主电路，其设置在输出电流控制器的控制下，用于对输入电压进行电压转换，并向随后的负载单元供电; 连接到主电路的输出端的采样单元，用于对主电路的输出特性参数进行采样; 输出电流控制器，用于控制主电路的限制点，并且基于限制点的调节方向以及调整之前和之后的主电路的输出特征参数的变化，确定稳定的 主电路工作点，控制主电路工作在稳定工作点。 负载驱动装置和系统能够提高驱动器的可靠性和降低电路复杂度。

公开(公告)号：US09155141B2

公开(公告)日：2015-10-06

申请号：US13511049

申请日：2010-11-15

Applicant: Liang'an Ge ,  Xiaoli Yao ,  Guichao Hua ,  Xinke Wu ,  Lijun Ren

Inventor： Liang'an Ge ,  Xiaoli Yao ,  Guichao Hua ,  Xinke Wu ,  Lijun Ren

IPC: H02J1/00 ,  H02J3/00 ,  H05B33/08 ,  H02M3/335 ,  H02M1/00

CPC classification number: H05B33/0815 ,  H02M3/33523 ,  H02M2001/0064 ,  H02M2001/008 ,  H05B33/0827 ,  Y10T307/414

Abstract: A multi-path constant current driving circuit. In the multi-path constant current driving circuit, a current sharing transformer (T31, T32, T33, T3(n−1)) is provided in power supply circuits which are provided with adjacent rectifier and filter units (Z31, Z32, Z33, Z3n). A first winding of the current sharing transformer (T31, T32, T33, T3(n−1)) is connected between a first terminal of a secondary winding of a first power supply circuit and the rectifier and filter unit (Z31, Z32, Z33, Z3n) of the first power supply circuit. A second winding of the current sharing transformer (T31, T32, T33, T3(n−1)) is connected between a first terminal of a secondary winding of a second power supply circuit and the rectifier and filter unit (Z31, Z32, Z33, Z3n) of the second power supply circuit. In-phase current flows through the dotted terminal of the first winding and the synonym terminal of the second winding of the current sharing transformer (T31, T32, T33, T3(n−1)). The current sharing transformer (T31, T32, T33, T3(n−1)) is used for sharing the current between the power supply circuits which are provided with the adjacent rectifier and filter units (Z31, Z32, Z33, Z3n ). The driving circuit is provided with high current sharing efficiency, a small size and a low cost.

Abstract translation: 多路恒流驱动电路。 在多路恒流驱动电路中，在配置有相邻的整流器和滤波器单元（Z31，Z32，Z33，...，Z33，...）的电源电路中设置电流共享变压器（T31，T32，T33，T3（n-1） Z3n）。 电流共享变压器（T31，T32，T33，T3（n-1））的第一绕组连接在第一电源电路的次级绕组的第一端和整流器和滤波器单元（Z31，Z32，Z33 ，Z3n）。 电流共享变压器（T31，T32，T33，T3（n-1））的第二绕组连接在第二电源电路的次级绕组的第一端和整流器和滤波器单元（Z31，Z32，Z33 ，Z3n）。 同相电流流过第一绕组的虚线端子和电流共享变压器（T31，T32，T33，T3（n-1））的第二绕组的同义端子。 电流共享变压器（T31，T32，T33，T3（n-1））用于共享设置有相邻整流器的电源电路和滤波器单元（Z31，Z32，Z33，Z3n）之间的电流。 驱动电路具有高的分流效率，体积小，成本低。

公开(公告)号：US20130093348A1

公开(公告)日：2013-04-18

申请号：US13806413

申请日：2010-11-12

Applicant: Liang'an Ge ,  Xiaoli Yao ,  Guichao Hua ,  Lijun Ren

Inventor： Liang'an Ge ,  Xiaoli Yao ,  Guichao Hua ,  Lijun Ren

IPC: H05B37/02

CPC classification number: H05B37/02 ,  H02M1/081 ,  H02M2005/2937 ,  H05B33/0815 ,  H05B33/0845 ,  H05B33/0857 ,  Y02B20/346

Abstract: A method, an apparatus and a system for controlling a light source are disclosed. The method comprises: receiving a dimming command, determining the dimming item specified by the dimming command (201); determining the corresponding chopping type and/or the range of the chopping phase angle according to the dimming item (202); and controlling the regulation switch according to the determined chopping type and/or the range of the chopping phase angle in order to output the voltage containing a chopping voltage (203). The method, the apparatus and the system can achieve the regulation functions for the light source color and/or the luminance etc.

Abstract translation: 公开了一种用于控制光源的方法，装置和系统。 该方法包括：接收调光命令，确定由调光命令（201）指定的调光项目; 根据调光项目（202）确定相应的斩波类型和/或斩波相位角的范围; 以及根据确定的斩波类型和/或斩波相位角的范围来控制调节开关，以便输出包含斩波电压（203）的电压。 该方法，装置和系统可以实现光源颜色和/或亮度等的调节功能。

公开(公告)号：US20130088169A1

公开(公告)日：2013-04-11

申请号：US13700352

申请日：2010-11-10

Applicant: Liang'an Ge ,  Xiaoli Yao ,  Guichao Hua ,  Lijun Ren

Inventor： Liang'an Ge ,  Xiaoli Yao ,  Guichao Hua ,  Lijun Ren

IPC: G05F1/10 ,  H05B37/02

CPC classification number: G05F1/10 ,  H05B33/0815 ,  H05B33/0827 ,  H05B37/02 ,  Y02B20/347

Abstract: A constant-current Light Emitting Diode (LED) driver circuit is provided, and the circuit includes: an output voltage adjustable circuit and at least one path of LED load, wherein the output voltage adjustable circuit comprises: a switch converting main circuit, an output characteristic parameter sampling circuit, and an output voltage controller. The output voltage controller is used to adjust the output voltage of the switch converting main circuit according to the variation relationship between the sampling signal output by the output characteristic parameter sampling circuit and the output voltage, determine the adjustive direction of the output voltage magnitude of the switch converting main circuit according to the change of the sampling signal, adjust the magnitude of the output voltage of the switch converting main circuit according to the preset step, and finally make the output voltage equal to the voltage of one path of LED load with the highest voltage or the difference between the output voltage and the voltage of one path of LED load voltage with the highest voltage within the predetermined range. The present solution implements reducing the connection complexity and power dissipation on the base of controlling the multi-path constant-current LED.

Abstract translation: 提供恒流发光二极管（LED）驱动器电路，该电路包括：输出电压可调节电路和至少一个LED负载路径，其中输出电压可调电路包括：开关转换主电路，输出 特征参数采样电路和输出电压控制器。 输出电压控制器用于根据输出特性参数采样电路输出的采样信号与输出电压之间的变化关系来调节开关转换主电路的输出电压，确定输出电压幅度的调节方向 根据采样信号的变化开关转换主电路，根据预设步骤调整开关转换主电路的输出电压幅值，最后使输出电压等于LED负载的一路径电压 最高电压或输出电压与LED负载电压的一个路径的电压之间的差异，具有在预定范围内的最高电压。 本解决方案在控制多路恒流LED的基础上降低了连接复杂性和功耗。

公开(公告)号：US20120274291A1

公开(公告)日：2012-11-01

申请号：US13511059

申请日：2010-11-15

Applicant: Liang'an Ge ,  Xiaoli Yao ,  Guichao Hua ,  Xinke Wu ,  Lijun Ren

Inventor： Liang'an Ge ,  Xiaoli Yao ,  Guichao Hua ,  Xinke Wu ,  Lijun Ren

IPC: G05F1/577

CPC classification number: H05B33/0815 ,  H02M3/33523 ,  H02M2001/0064 ,  H02M2001/008 ,  H05B33/0827 ,  Y10T307/414

Abstract: A multi-path constant current drive circuit includes a DC/AC converter, a main transformer and at least two rectifying and filtering units. The main transformer includes at least one assistant side winding with a tap; together with the assistant side winding of the main transformer, each of the at least two rectifying and filtering units respectively forms a power supply loop; each power supply loop includes a first rectifying loop and a second rectifying loop, which are relatively used for the rectification of the positive and the negative half-cycle alternating voltage; a current-equalizing transformer is arranged between the adjacent first power supply loop and second power supply loop, the windings of the current-equalizing transformer are respectively in the rectifying loops contained in the first power supply loop and the second power supply loop, thus realizing the current equalization between the different rectifying loops in which the adjacent rectifying and filtering units are contained. The multi-path constant current drive circuit performs a good current equalization, and can reduce the volume of the current-equalizing transformer and decrease the cost.

Abstract translation: 多路恒流驱动电路包括DC / AC转换器，主变压器和至少两个整流滤波单元。 主变压器包括至少一个带有水龙头的辅助侧绕组; 连同主变压器的辅助侧绕组，至少两个整流滤波单元中的每一个分别形成电源回路; 每个电源回路包括第一整流回路和第二整流回路，其相对用于正和负半周期交流电压的整流; 在相邻的第一电源回路和第二电源回路之间布置有电流均衡变压器，电流均衡变压器的绕组分别在包含在第一电源回路和第二电源回路中的整流回路中，从而实现 其中包含相邻整流和滤波单元的不同整流回路之间的电流均衡。 多路恒流驱动电路实现良好的电流均衡，可以减小电流均衡变压器的体积，降低成本。