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1. 发明授权

US09692294B2 Main switch control circuit in power factor correction circuit 有权
公开(公告)号：US09692294B2
公开(公告)日：2017-06-27
申请号：US14764605
申请日：2013-12-04
申请人： INVENTRONICS (HANGZHOU), INC.
发明人： Delai Jiang , Liang'an Ge , Lian Wu
IPC分类号： H02M1/42
CPC分类号： H02M1/4208 , H02M1/4225 , Y02B70/126 , Y02P80/112
摘要： A control circuit in a power factor correction (PFC) circuit includes: a multiplier, used for multiplying a voltage sampling signal by a feedback signal, and outputting a first signal; and a waveform generating module, used for generating a second signal related to a filter capacitor connected in parallel to an input end and/or an output end of a rectifier bridge. A control signal for controlling a state of a main switch transistor is generated by using the first signal, the second signal, and a current sampling signal of the main switch transistor in the PFC circuit.

2. 发明授权

US09148933B2 Power supply circuit for multi-path light-emitting diode (LED) loads 有权
标题翻译：用于多路径发光二极管（LED）负载的电源电路
公开(公告)号：US09148933B2
公开(公告)日：2015-09-29
申请号：US13813723
申请日：2010-12-16
申请人： Liang'an Ge
发明人： Liang'an Ge
IPC分类号： H05B41/00 , H05B37/02 , H05B33/08
CPC分类号： H05B37/02 , H05B33/0815 , H05B33/0887
摘要： 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.
摘要翻译：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。

3. 发明授权

US08659919B2 Circuit to improve light load power factor of power supply 有权
标题翻译：电路改善电源的轻载功率因数
公开(公告)号：US08659919B2
公开(公告)日：2014-02-25
申请号：US12896259
申请日：2010-10-01
申请人： Guichao Hua , Xiaoli Yao , Liangan Ge , Lijun Ren
发明人： Guichao Hua , Xiaoli Yao , Liangan Ge , Lijun Ren
IPC分类号： H02M1/14 , H02M1/42
CPC分类号： H02M1/4225 , H02J7/041 , H02J7/345 , H02M2001/0032 , Y02B40/90 , Y02B70/126 , Y02B70/16 , Y02P80/112
摘要： A circuit to improve the power factor of a power supply at light load, the circuit including a rectifier bridge, a filter positioned before or after the rectifier bridge, a logic control and power drive circuit, a switching transistor, a light load detecting circuit configured to output a control signal to the logic control and power drive circuit which controls the switching transistor to conduct when a heavy load is experienced and to cut off when a light load is experienced, in order to control the working status of the filter capacitor, and a power factor correction circuit.
摘要翻译：一种提高轻载电源功率因数的电路，该电路包括整流桥，位于整流桥之前或之后的滤波器，逻辑控制和功率驱动电路，开关晶体管，轻载检测电路配置向控制开关晶体管导通的逻辑控制和电力驱动电路输出控制信号，以便在经历轻负载时切断，以便控制滤波电容器的工作状态，以及功率因数校正电路。

4. 发明申请

US20140021875A1 AUXILIARY POWER SUPPLY CIRCUIT OF TWO WIRE DIMMER 有权
标题翻译：两线调光器的辅助电源电路
公开(公告)号：US20140021875A1
公开(公告)日：2014-01-23
申请号：US14008438
申请日：2011-08-29
申请人： Delai Jiang , Jianhua Zou , Guichao Hua
发明人： Delai Jiang , Jianhua Zou , Guichao Hua
IPC分类号： H05B37/02
CPC分类号： H05B37/02 , H02M1/081 , H02M5/293 , H02M2001/0006 , H05B39/04
摘要： An auxiliary power supply circuit of a two wire dimmer, comprising: an auxiliary source capacitor (20) and a cutoff switch (30) constituting a series branch, a chopper switch (10) parallel-connected to the series branch, and a control device (40) connected to the chopper switch (10) and to the cutoff switch (30). The control device (40) measures an auxiliary source voltage and receives a chopper voltage control signal (Vg), and outputs signals (V1 and V2), on the basis of the result of a comparison between the auxiliary source voltage and a preset voltage and of the state of the chopper voltage control signal (Vg), to control the on and off of the chopper switch (10) and of the cutoff switch (30) for controlling the charging of the auxiliary source capacitor (20). The auxiliary power supply circuit has low losses, high efficiency, and is not limited by minimum chopper angle, and has low electromagnetic interference.
摘要翻译：一种双线调光器的辅助电源电路，包括：辅助源电容器（20）和构成串联分支的截止开关（30），与串联分支并联的斩波开关（10），以及控制装置（40）连接到斩波开关（10）和断开开关（30）。控制装置（40）根据辅助电源电压和预设电压之间的比较结果，测量辅助电源电压并接收斩波电压控制信号（Vg），并输出信号（V1和V2），以及的斩波电压控制信号（Vg）的状态，以控制用于控制辅助源电容器（20）的充电的斩波开关（10）和截止开关（30）的导通和截止。辅助电源电路损耗低，效率高，不受最小切割角度的限制，电磁干扰低。

5. 发明申请

US20130320871A1 HIGH EFFICIENCY CONSTANT CURRENT LED DRIVER 有权
标题翻译：高效率恒流LED驱动器
公开(公告)号：US20130320871A1
公开(公告)日：2013-12-05
申请号：US13901982
申请日：2013-05-24
申请人： INVENTRONICS (HANGZHOU), INC.
发明人： Liangan Ge , Xiaoli Yao , Guichao Hua
IPC分类号： H05B33/08
CPC分类号： H05B33/0815 , H05B33/0827 , Y02B20/348
摘要： The present invention discloses a high efficiency constant current LED driver, which comprises a rectification bridge, a PFC main circuit, an isolated DC/DC converter, a PFC controller and a PFC bus control circuit. Since the input voltage is an intermediate PFC bus voltage, which varies with the output voltage of the DC/DC converter. When the isolated DC/DC converter is an LLC resonant circuit, the operating frequency of the LLC circuit is close to the resonant frequency within a wide output voltage range. Thus, the gain range and the operating frequency is narrow, and can enable the constant current module to work with a high efficiency at a wide output voltage range. When the isolated DC/DC converter is a symmetric half bridge, or an asymmetric half bridge or a full bridge circuit, the duty cycle of DC/DC circuit is close to 50% within a wide output voltage range. Thus, the changing range of the duty cycle of the DC/DC converter will be narrow and can improve the efficiency dramatically.
摘要翻译：本发明公开了一种高效率恒流LED驱动器，其包括整流桥，PFC主电路，隔离DC / DC转换器，PFC控制器和PFC总线控制电路。由于输入电压是中间PFC总线电压，其随着DC / DC转换器的输出电压而变化。当隔离的DC / DC转换器是LLC谐振电路时，LLC电路的工作频率接近于宽输出电压范围内的谐振频率。因此，增益范围和工作频率窄，可以使恒流模块在宽输出电压范围内以高效率工作。当隔离式DC / DC转换器为对称半桥，或非对称半桥或全桥电路时，DC / DC电路的占空比在宽输出电压范围内接近50％。因此，DC / DC转换器的占空比的变化范围将变窄，并且可以显着提高效率。

6. 发明申请

US20130154482A1 OPEN-CIRCUIT PROTECTION CIRCUIT OF CONSTANT CURRENT DRIVING CIRCUIT FOR LIGHT EMITTING DIODES 有权
标题翻译：用于发光二极管的恒流驱动电路的开路保护电路
公开(公告)号：US20130154482A1
公开(公告)日：2013-06-20
申请号：US13814771
申请日：2010-12-31
申请人： Liang'an Ge , Xiaoli Yao
发明人： Liang'an Ge , Xiaoli Yao
IPC分类号： H05B37/02
CPC分类号： H05B37/02 , H05B33/0815 , H05B33/0887 , Y02B20/341
摘要： 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.
摘要翻译：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。

7. 发明授权

US09590487B2 Method and circuit for reducing ripple of current output by current source 有权
标题翻译：降低电流源电流输出纹波的方法和电路
公开(公告)号：US09590487B2
公开(公告)日：2017-03-07
申请号：US14768120
申请日：2013-12-10
申请人： INVENTRONICS (HANGZHOU), INC.
发明人： Xiaoli Yao , Liang'an Ge
IPC分类号： G05F1/56 , H02M1/14 , H05B33/08
CPC分类号： H02M1/14 , H05B33/0815 , H05B33/089 , Y02B20/347
摘要： Disclosed are a method and circuit for reducing a ripple of a current output by a current source. The circuit for reducing a ripple of a current output by a current source comprises a tube with adjustable impedance and a control circuit. The control circuit detects a direct current output by the current source to obtain a first signal which is in proportion to the direct current, and by comparing an instantaneous value of the first signal with an amplitude value of a set signal, controlling the increase of the impedance of the tube with adjustable impedance when the instantaneous value of the first signal is greater than the amplitude value of the set signal, so as to enable the amplitude value of the first signal to not exceed the amplitude value of the set signal and then enable the amplitude value of the current output by the current source to not exceed the amplitude value of the set current of the set signal, so that the purpose of reducing the ripple of the direct current output by the current source is finally achieved.
摘要翻译：公开了一种用于减少电流源的电流输出纹波的方法和电路。用于减小电流源的电流输出纹波的电路包括具有可调阻抗的管和控制电路。控制电路检测由电流源输出的直流电流，得到与直流成比例的第一信号，并将第一信号的瞬时值与设定信号的振幅值进行比较，当第一信号的瞬时值大于设定信号的振幅值时，具有可调阻抗的管的阻抗，以使第一信号的振幅值不超过设定信号的振幅值，然后使能由电流源输出的电流振幅值不超过设定信号的设定电流的幅度值，从而最终达到减小电流源直流输出波动的目的。

8. 发明申请

US20150381028A1 METHOD AND CIRCUIT FOR REDUCING RIPPLE OF CURRENT OUTPUT BY CURRENT SOURCE 有权
标题翻译：用于减少电流源电流纹波的方法和电路
公开(公告)号：US20150381028A1
公开(公告)日：2015-12-31
申请号：US14768120
申请日：2013-12-10
申请人： INVENTRONICS (HANGZHOU), INC.
发明人： Xiaoli YAO , Liang'an GE
IPC分类号： H02M1/14
CPC分类号： H02M1/14 , H05B33/0815 , H05B33/089 , Y02B20/347
摘要： Disclosed are a method and circuit for reducing a ripple of a current output by a current source. The circuit for reducing a ripple of a current output by a current source comprises a tube with adjustable impedance and a control circuit. The control circuit detects a direct current output by the current source to obtain a first signal which is in proportion to the direct current, and by comparing an instantaneous value of the first signal with an amplitude value of a set signal, controlling the increase of the impedance of the tube with adjustable impedance when the instantaneous value of the first signal is greater than the amplitude value of the set signal, so as to enable the amplitude value of the first signal to not exceed the amplitude value of the set signal and then enable the amplitude value of the current output by the current source to not exceed the amplitude value of the set current of the set signal, so that the purpose of reducing the ripple of the direct current output by the current source is finally achieved.
摘要翻译：公开了一种用于减少电流源的电流输出纹波的方法和电路。用于减小电流源的电流输出纹波的电路包括具有可调阻抗的管和控制电路。控制电路检测由电流源输出的直流电流，得到与直流成比例的第一信号，并将第一信号的瞬时值与设定信号的振幅值进行比较，当第一信号的瞬时值大于设定信号的振幅值时，具有可调阻抗的管的阻抗，以使第一信号的振幅值不超过设定信号的振幅值，然后使能由电流源输出的电流的幅度值不超过设定信号的设定电流的幅度值，从而最终实现减小电流源输出的直流电的纹波的目的。

9. 发明授权

US09018845B2 Circuit for adjusting LED current 有权
标题翻译： LED电流调节电路
公开(公告)号：US09018845B2
公开(公告)日：2015-04-28
申请号：US14000501
申请日：2011-07-21
申请人： Liang'an Ge , Xiaoli Yao
发明人： Liang'an Ge , Xiaoli Yao
IPC分类号： H05B37/00 , H05B39/00 , H05B41/00 , H05B33/08
CPC分类号： H05B33/0815 , H05B33/0827 , H05B33/0866 , Y02B20/347
摘要： 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.
摘要翻译：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。

10. 发明授权

US08867250B2 High output current split package A/C adapter 有权
标题翻译：高输出电流分流封装A / C适配器
公开(公告)号：US08867250B2
公开(公告)日：2014-10-21
申请号：US12340671
申请日：2008-12-20
申请人： Guichao Hua
发明人： Guichao Hua
IPC分类号： H02M1/088 , H02M3/156 , H02M3/335 , H02M1/096 , H02M1/00
CPC分类号： H02M3/156 , H02M3/33507 , H02M2001/007
摘要： A power adapter, including an AC input terminal, an AC-DC power converter, a DC-DC power converter, and an output terminal, wherein the AC-DC power converter and the DC-DC power converter are separate components, and wherein the power AC input terminal, AC-DC power converter, DC-DC power converter and the output terminal are connected sequentially via a plurality of cords.
摘要翻译：一种电力适配器，包括AC输入端子，AC-DC电力转换器，DC-DC电力转换器和输出端子，其中AC-DC电力转换器和DC-DC电力转换器是分离的部件，并且其中电源交流输入端子，AC-DC电力转换器，DC-DC电力转换器和输出端子通过多根电源顺序连接。

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