CN103813577A - Self-oscillation LED (Light Emitting Diode) driving system and semiconductor lighting device - Google Patents

Self-oscillation LED (Light Emitting Diode) driving system and semiconductor lighting device Download PDF

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CN103813577A
CN103813577A CN 201210459804 CN201210459804A CN103813577A CN 103813577 A CN103813577 A CN 103813577A CN 201210459804 CN201210459804 CN 201210459804 CN 201210459804 A CN201210459804 A CN 201210459804A CN 103813577 A CN103813577 A CN 103813577A
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device
unit
power
semiconductor
supply
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CN 201210459804
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CN103813577B (en )
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王耀海
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欧普照明股份有限公司
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Abstract

The invention discloses a self-oscillation LED (Light Emitting Diode) driving system and a semiconductor lighting device. The driving system comprises a rectifying device, for connecting an external power supply and performing rectification and smoothing; a starting device, for connecting the rectifying device; a power unit, which is connected with the starting device and comprises a power supply control unit for controlling the power supply to a load; a switch unit, for controlling the power supply control unit; a signal control unit, wherein the auxiliary winding of an inductive element is connected with resistive and capacitive elements to form into self-oscillation so as to control the switch unit. The semiconductor light source driving system and the semiconductor lighting device provided by the invention are simple in structure and low in cost.

Description

—种自激振荡LED驱动系统及半导体照明装置 - kind of self-oscillation of the semiconductor LED driving system and the illumination device

[0001] 技术领域 [0001] Technical Field

本发明涉及一种半导体光源的驱动系统,且更具体来说,涉及一种自激振荡LED驱动系统及半导体照明装置。 The present invention relates to a semiconductor light source driving system, and more particularly, to a self-oscillation driving system and semiconductor LED lighting apparatus.

[0002] 背景技术 [0002] BACKGROUND OF THE INVENTION

半导体光源(LED)是第三代半导体材料制作的光源和显示器件,具有耗电量少、寿命长、无污染、色彩丰富、可控性强等特点,是照明光源及光产业的一次革命。 The semiconductor light source (LED) is a semiconductor material of the third-generation light source and a display device having less power consumption, long life, pollution-free, rich colors, controllability and other characteristics, and a light source illumination industrial revolution. 随着LED的发展,越来越多的LED照明产品涌入市场。 With the development of LED, more and more LED lighting products into the market. LED的电子驱动部分是LED照明产品中一个不可缺少的组成部分。 LED driving portion is an electronic LED lighting an indispensable component.

[0003]目前LED市场,LED照明终端售价仍高于传统灯泡与节能灯,降价已成为扩大市场接受度的关键。 [0003] It LED market, LED lighting terminal price is still higher than traditional light bulbs and energy-saving lamps, price has become the key to the expansion of market acceptance. 随着LED颗粒价格的不断下降,电子驱动部分的价格比例越显重要,目前市场上所普及使用的LED驱动线路大都采用IC控制,其主要缺点就是价格成本较高。 With the falling prices of LED particles, the ratio of the price of the electronic driver portion becomes more important, popular on the market today mostly used in the LED driving circuit uses a control IC, its main drawback is the higher cost price.

[0004] 因此,如何提供一种结构简单、成本低的半导体光源驱动系统成为半导体领域发展的突出问题。 [0004] Therefore, how to provide a simple, low-cost semiconductor light source driving system of the outstanding problems the development field of semiconductors. 针对现有技术中存在的问题,本方案提出一种自激振荡LED驱动系统及半导体照明装置是半导体光源驱动系统技术领域目前急待解决的问题之一。 For the problems in the prior art, the present embodiment provides a self-oscillation driving system and semiconductor LED lighting device is one of a semiconductor light source driving BACKGROUND systems currently pressing problem.

[0005] 发明内容 [0005] SUMMARY OF THE INVENTION

本发明的目的是提供一种结构简单,应用范围非常宽,成本低廉的主要针对LED照明产品中的电子驱动线路。 Object of the present invention is to provide a simple structure, a wide range of applications, mainly for low cost electronic drive circuit of the LED lighting products. 本发明使用较少元器件实现LED的电子驱动部分,大大减少了元器件数量和成本,使电子驱动部分占LED照明系统中的比例大幅度缩小,并具结构简单、成本低、效率损失减少的特点。 The present invention is implemented using fewer components electronic LED driving portion, greatly reducing the number and cost of components, the proportion of the electronic driving system part of the LED lighting greatly reduced, and with a simple structure, low cost, reducing the loss of efficiency features.

[0006] 本发明实施例提供了一种自激振荡LED驱动系统,所述驱动系统包括:整流装置,用于连接外部电源,进行整流和滤波;启动装置,连接整流装置;供电装置,与启动装置连接,供电装置包括供电控制单元对负载进行供电控制;开关单元对供电控制单元进行控制;信号控制单元,由感性元件的副绕连接阻性及容性元件构成自激振荡对开关单元进行控制。 [0006] Example embodiments provide a self-oscillation LED driving system of the present invention, the drive system comprising: a rectifying means for connection to an external power source, rectifying and filtering; activating means connected to the rectifying means; power supply device, starting with means connected to the power supply device includes a power supply control unit controlling supply load; a switching unit power supply control unit controls; signal control unit by the sub-winding inductive element connected resistive and capacitive elements constituting the self-excited oscillation of the switching unit controls .

[0007] 根据本发明实施例,所述信号控制单元由感性元件(202)的副绕(201)串联容性元件(203)和阻性元件(204)构成自激振荡对开关单元(300)进行控制。 [0007] According to an embodiment of the present invention, the inductive element by a signal control unit (202) secondary winding (201) series capacitive element (203) and the resistive element (204) constituting the self-excited oscillation of the switching unit (300) control.

[0008] 根据本发明实施例,所述开关单元(300)的第一端(301)与信号控制单元之阻性元件(204)的第二端连接。 [0008] According to an embodiment of the present invention, a second end connected to a first end (301) of the switch unit (300) with a resistive element (204) a signal of the control unit.

[0009] 根据本发明实施例,所述信号控制单元由感性元件(202)、二极管(401)和容性元件(402)构成,其中,二极管(401)的第一端和容性元件(402)的第一端连接,容性元件(402)的第二端与感性元件(202)的第一端连接,而感性元件(202)的第二端、二极管(401)的第二端连接于开关元件(300)的第二端(302)。 [0009] According to an embodiment of the present invention, the inductive element by a signal control unit (202) Diodes (401) and a capacitive element (402), and wherein the diode (401) and a first end of the capacitive element (402 ) connected to a first end, a first end connected to the capacitive element (402) and a second end of the inductive element (202) and the second end of the inductive element (202), a diode (401) connected to the second end a second end (302) of the switching element (300).

[0010] 根据本发明实施例,所述启动装置包含阻性元件(101)、二极管(102),其中,阻性元件(101)的第一端连接于整流装置,阻性元件(101)的第二端连接于二极管(102)的第一端,而二极管(102)的第二端接地。 [0010] According to an embodiment of the present invention, the actuating means comprises a resistive element (101), a diode (102), wherein the resistive element (101) a first end connected to the rectifying means, resistive element (101) a second terminal connected to a first terminal of the diode (102), the diode (102) to a second end.

[0011] 一种半导体照明装置,包括: 半导体光源负载; [0011] A semiconductor lighting device comprising: a semiconductor light source load;

整流装置,用于连接外部电源,进行整流和滤波; Rectifier means for connection to an external power source, rectifying and filtering;

启动装置,连接整流装置; Starting means connected to the rectifying means;

供电装置,与启动装置连接,供电装置包括供电控制单元对负载进行供电控制; 开关单元对供电控制单元进行控制; Power supply means connected to the activation means, the power supply device includes a power supply control unit controlling supply load; switching unit controls the power supply control unit;

信号控制单元,由感性元件的副绕连接阻性及容性元件构成自激振荡对开关单元进行控制。 A signal control unit by the secondary winding of the inductive element is connected resistive and capacitive elements constituting the self-excited oscillation of the switching control unit.

[0012] 根据本发明实施例,所述负载为单个或多个LED组。 [0012] According to an embodiment of the present invention, the load is a single or a plurality of LED groups.

[0013] 根据本发明实施例,所述LED组的构成方式包括但不限于串联连接或并联连接或串并联连接的混合型连接结构来电连接。 [0013] According to an embodiment of the present invention, said embodiment constituting the LED group include, but not limited to a series type hybrid connector connection structure or connected in parallel, or electrically connected.

[0014] 根据以下参考附图对本发明的描述,本发明的其他目标和效用将变得显而易见,并且读者可全面了解本发明。 [0014] According to the following description of the invention with reference to the accompanying drawings, other objects and utilities of the present invention will become apparent, and the reader can fully understand the present invention.

[0015] 附图说明 [0015] BRIEF DESCRIPTION OF DRAWINGS

图1是LED驱动系统模块结构连接示意图; FIG. 1 is a block configuration LED driving system connection diagram;

图2是根据本发明实施例的LED驱动系统电路图; FIG 2 is a circuit diagram of a LED driving system according to an embodiment of the present invention;

图3是根据本发明实施例的LED驱动系统之供电装置结构示意图; FIG 3 is a schematic diagram of the LED driving power supply system of the embodiment of the present invention, the device structure embodiment;

图4是根据本发明实施例的LED驱动系统启动阶段工作示意图; FIG 4 is a LED drive system startup phase of operation a schematic embodiment of the present invention;

图5是根据本发明实施例的LED驱动系统第一储能阶段工作示意图; FIG 5 is a schematic view of the working stage of the first energy storage LED drive system of the present invention;

图6是根据本发明实施例的LED驱动系统释能阶段工作示意图; FIG 6 is a diagram of a system able to release phase of the drive according to an embodiment of the present invention, LED;

图7是根据本发明实施例的LED驱动系统第二储能阶段工作示意图。 FIG 7 is a schematic diagram according to the operating phase of the second energy storage system of the embodiment of the LED driver of the present invention.

[0016] 在上述附图中,相同附图标记指示相同、相似或相应的元件或功能。 [0016] In the drawings, like reference numerals designate the same, similar or corresponding elements or functions.

[0017] 具体实施方式 [0017] DETAILED DESCRIPTION

下文将参照图式通过实施例来详细描述本发明的具体实施例。 Hereinafter, specific embodiments of the present invention is described in detail by way of examples with reference to the drawings.

[0018] 本发明使用较少元器件实现LED的电子驱动部分,大大减少了元器件数量和成本,使电子驱动部分占LED照明系统中的比例大幅度缩小。 [0018] implemented using fewer components LED driving electronic part of the present invention, greatly reducing the number and cost of components, the proportion of the electronic driving system part of the LED lighting greatly reduced.

[0019] 图1是本发明所述自激振荡LED驱动系统模块结构连接示意图。 [0019] FIG. 1 is a LED driving system connection diagram of the modular structure of the present invention is self-oscillating.

[0020] 整流装置,用于连接外部电源,进行整流和滤波; [0020] The rectifying means for connection to an external power source, rectifying and filtering;

启动装置,连接整流装置; Starting means connected to the rectifying means;

供电装置,与启动装置连接,供电装置包括供电控制单元对负载进行供电控制; 开关单元对供电控制单元进行控制; Power supply means connected to the activation means, the power supply device includes a power supply control unit controlling supply load; switching unit controls the power supply control unit;

信号控制单元,由感性元件的副绕连接阻性及容性元件构成自激振荡对开关单元进行控制。 A signal control unit by the secondary winding of the inductive element is connected resistive and capacitive elements constituting the self-excited oscillation of the switching control unit.

[0021 ] 图2是根据本发明实施例的LED驱动系统电路图。 [0021] FIG. 2 is a circuit diagram of a LED driving system according to an embodiment of the present invention.

[0022] 具体而言,在本发明实施例中,整流装置10,其一端连接至由外部提供的包含有保险丝11的交流(AC)电源,而另一端(输出端)13连接至负载装置40 ; [0022] Specifically, in the embodiment of the present invention, the rectifying device 10, which comprises one end connected to the externally provided with a current (AC) power fuse 11, and the other end (an output terminal) 13 is connected to a load device 40 ;

启动装置20,用于连接整流装置10 ; Activation means 20, 10 for connecting the rectifying means;

供电装置30,与启动装置20连接,通过感性元件202经由副绕201连接阻性元件204及容性元件203,作为开关元件300的控制部分,对供电装置30连接的负载装置40进行供电控制,用于当驱动系统连接有负载装置40时,配合整流装置10对负载装置40进行供电,且供电装置30的第一输出端31和第二端输出端32连接至负载装置40。 Power supply means 30, 20 connected to the activation means, the inductive element is connected by a resistive element 204 and capacitive element 203 via the secondary winding 201 202, a control section 300 of the switching element, the power supply device 30 to the load device 40 connected to the power supply control, when the drive system is connected to a load device 40, with the commutator 10 supplies power to the load device 40, and a first output terminal of the power supply device 31 and the second end 30 of the output 32 connected to a load device 40.

[0023] 在图2中,外部交流(AC)电源(例如,120VAC)可以为商业AC线路电压,并且当如图2中所示的将桥式二极管12 (包含四个单极管D1、D2、D3、D4)应用于整流装置10时,可以将输入的AC电压输出为全波整流电压,并将合适的电流提供给负载装置40。 [0023] In FIG. 2, an external alternating current (AC) power source (e.g., 120VAC) may be a commercial AC line voltage, and as shown when the diode bridge shown in FIG. 12 (comprising four unipolar transistors D1, D2 , D3, D4) is applied to the rectifying device 10, the input AC voltage is full-wave rectified output voltage, and the appropriate current to the load device 40.

[0024] 在本文中,外部提供的包含有保险丝11的交流(AC)电源,其输入电压范围为交流(AC)电源120V/50〜 60Hz〜240V/50〜 60Hz,输入电压范围为直流(DC)电源12V〜400V。 [0024] As used herein, an externally supplied with alternating current (AC) power fuse 11, the input voltage range of current (AC) power supply 120V / 50~ 60Hz~240V / 50~ 60Hz, DC input voltage range (DC ) power 12V~400V.

[0025] 如图2所示,在本方案中,使用少量元器件组合形成自激振荡线路,结合降压线路,构成一个LED电子驱动器。 [0025] As shown in FIG 2, in this embodiment, the components are combined to form a small amount of self-excited oscillation circuit, a buck circuit in combination, constitute a LED drive electronics. 即在一个感性元件上使用副绕作为一个开关元件的控制信号输入,中间串联一个阻性元件和一个容性元件作为控制信号输入的大小及时间,使用一个二极管作为容性元件的充放电控制,使用该感性元件连接一个二极管和一个容性元件产生直流输出。 I.e., in about one inductive element as a sub-element of the switching control signal input, intermediate and in series with a resistive element and a capacitive element as a size control signal input time, charge and discharge control using a diode as a capacitive element, the inductive element is connected using a diode and a capacitive element generates a DC output.

[0026] 具体而言,在本实施例中,启动装置20包含阻性元件101、二极管102,其中,阻性元件101的第一端连接于整流装置10的一端,阻性元件101的第二端连接于二极管102的第一端,而二极管102的第二端接地。 The second [0026] Specifically, in the present embodiment, the actuation device 20 comprises a resistive element 101, a diode 102, wherein a first end of the resistive element 101 is connected to one end 10 of the rectifying means, resistive element 101 end is connected to a first terminal of the diode 102, diode 102 and a second end grounded.

[0027] 供电装置30包含感性元件201和202、容性元件203、阻性元件204、开关元件300、二极管401以及容性元件402,其中,二极管401的第一端与启动装置20之阻性元件101的第一端与连接,阻性元件101的第二端分别与阻性元件204的第二端以及开关元件300的第一端301连接,启动装置20之二极管102的第二端与开关元件300的第三端303连接并接地,容性元件203的第一端与感性元件201第一端连接,感性元件201第二端则接地,容性元件203的第二端与阻性元件204的第一端连接,感性元件202的第一端与容性元件402的第二端连接,感性元件202的第二端与二极管401的第二端以及开关元件300的第二端302连接。 [0027] The device 30 comprises a power supply 201 and an inductive element 202, capacitive element 203, resistive element 204, switching element 300, capacitive element 402 and the diode 401, wherein the first terminal of the diode 401 and the start of the resistive means 20 a second switch end connected to the first end 101 and second end 101, respectively, and a second end of the switching element 301 is connected to a first terminal of the resistive element 204 of resistive element 300, the actuating means 20 of the diode element 102 the third element is connected to ends 303,300 and a ground, a first end 203 and a first end of the inductive element 201 connected to the capacitive element, the second end of the inductive element 201 is grounded, a second terminal of the capacitive element 203 and resistive element 204 connecting a first end, a first end of the inductive element 202 and the second end of the capacitive element 402 is connected to a second end of the inductive element 202 is connected to a second end 302 and a second end 300 of the switching element 401 is a diode.

[0028] 负载装置40包含及负载单元501,其中,供电装置30的容性元件402与负载单元501并联连接。 [0028] 40 and the load device comprises a load cell 501, wherein the capacitive element 30 of the power supply device 402 is connected in parallel with the load cell 501.

[0029] 如图2所示,在本方案中,使用少量元器件组合形成自激振荡线路,结合降压线路,构成一个LED电子驱动器。 [0029] As shown in FIG 2, in this embodiment, the components are combined to form a small amount of self-excited oscillation circuit, a buck circuit in combination, constitute a LED drive electronics. 即在一个感性元件202上使用副绕201,即感性元件201作为一个开关元件300的控制信号输入,中间串联一个阻性元件204和一个容性元件203作为控制信号输入的大小及时间,使用一个二极管401作为容性元件402的充电及放电控制,使用该感性元件202接一个二极管401和一个容性元件402产生直流输出。 I.e., used on a inductive element 202 about 201, i.e., the inductive element 201 as a control signal input switching element 300, the intermediate element 204 in series with a resistive and a capacitive element 203 as the size and timing control signal input using a as the charging diode 401 and discharging the capacitive control element 402 using the inductive element 202 connected to a diode 401 and a capacitive element 402 generates a DC output.

[0030] 故,进一步的,如图3所示,在本方案中供电装置30可包括信号控制单元、开关单元以及供电控制单元,通过信号控制单元控制信号输入的大小及时间,并依据开关单元对负载装置进行供电控制。 [0030] Therefore, further, as shown, in this embodiment the supply device 30 may include a signal control unit, a control unit and a power supply switch unit, the size and timing signal control unit control signal input, and based on the switching unit 3 control means supplies power to the load. 其中,信号控制单元包含副绕201、容性元件203和阻性元件204,由感性元件202的副绕201串联容性元件203和阻性元件204构成自激振荡对开关单元300进行控制,其中,二极管401的第一端和容性元件402的第一端连接,容性元件402的第二端与感性元件202的第一端连接,而感性元件202的第二端、二极管401的第二端连接于开关元件300的第二端302。 Wherein the control unit comprises a sub-signal around 201, capacitive element 203 and resistive element 204, 204 constitute a self-excited oscillation of the switching unit 300 is controlled by the inductive element 201 about the sub-series capacitive element 203 and resistive element 202, wherein , a first terminal of the diode 401 and the capacitive element 402 is connected to a first end, a second end of the capacitive element 402 and inductive element 202 is connected to a first end, a second end of the inductive element 202 of the second diode 401 a second end connected to the end 302 of the switching element 300.

[0031] 此外,开关单元,包括一开关元件300,连接于启动装置20以及供电装置30的供电控制单元,其中,开关元件300的第一端301与信号控制单元之阻性元件204的第二端连接;供电控制单元,包括一感性元件202、二极管401和容性元件402,连接于上述开关单元和负载装置40,用于依据开关单元对负载装置40进行供电控制。 [0031] Further, the switching unit, comprising a switching element 300 is connected to the power supply control unit 20 and the power supply starting means 30 of the apparatus, wherein a first end of the switching element 300 and resistive element 301 of the signal control unit 204 of the second terminal; power supply control unit 202 comprises an inductive element, a capacitive element 402 and the diode 401 is connected to the switching unit 40 and the load device, for controlling the power supply to the load device 40 based on the switching unit.

[0032] 其中,供电控制单元对负载进行供电控制; [0032] wherein the power supply control unit controlling supply power to the load;

开关单元对供电控制单元进行控制; Switching unit for controlling the power supply control unit;

信号控制单元,由感性元件的副绕连接阻性及容性元件构成自激振荡对开关单元进行控制。 A signal control unit by the secondary winding of the inductive element is connected resistive and capacitive elements constituting the self-excited oscillation of the switching control unit.

[0033] 因此,在本发明实施例中,通过使用感性元件副绕连接一个阻性元件和一个容性元件作为一个开关元件的控制部分,形成一个自激振荡线路,并且该感性元件和开关元件与负载(LED)串联,并将该感性元件和开关元件连接处作为正电压输出段,该输出端还串联 [0033] Accordingly, the inductive element and the switching element in the embodiment of the present invention, a winding connected to a resistive element and a capacitive element by using the inductive element as a sub-control section of a switching element, a self-oscillation circuit is formed, and load (LED) connected in series, and a positive voltage output section of the inductive element and a switching element is connected at the output terminal also connected in series

有一个二极管。 There is a diode.

[0034] 进一步的,在本发明中,供电装置30的输出电流范围20mA〜300mA,输出电压范围12疒300V。 [0034] Further, in the present invention, the power supply means 30 output current range 20mA~300mA, the output voltage range of 12 epileptic 300V.

[0035] 在图2中,具体而言在本方案中,负载装置40为单个或多个LED组。 [0035] In FIG. 2, specifically, in the present embodiment, the load device 40 is a single or a plurality of LED groups. 负载装置40可以是包括至少一个LED的光源501,并且可以包括具有各种电连接关系的多个LED。 The load device 40 may include at least one LED light source 501, and may include a plurality of LED's having various electrical connection relationship. 在图2中,构成负载装置40的多个LED以串联连接的状态示出,但负载装置40中所包括的多个LED也可以根据应用LED的应用系统而以串联连接或并联连接或串并联连接的混合型连接结构来电连接。 In FIG. 2, a plurality of LED constituting the load device 40 connected in series in a state shown, the load may be connected in series or in parallel, or in series-parallel LED application system according to the application apparatus 40 comprises a plurality of LED's in the hybrid connection structure electrically connected.

[0036] 进一步的,在本发明实施例中,所述启动装置20用于在启动时(S卩,在输入电压Vin初始施加时)使供电装置30中的开关元件300处于导通状态。 [0036] Further, in the embodiment of the present invention, the starting device 20 is used at the start (S Jie, when the input voltage Vin is initially applied) the switching element 300 of the power supply device 30 is in the ON state. 所述供电控制装置30包括信号控制单元、供电控制单元、信号发生单元及开关单元,所述供电控制单元中的感性元件202用于接收输入电压并且在所述开关单元的控制下进行储能和释能。 The power supply control means includes a signal control unit 30, the power supply control unit, a signal generating unit and the switching unit, the power supply control unit for the inductive element 202 receives an input voltage and store energy under the control of the switching unit and release energy. 所述信号发生单元受所述供电控制单元中的感性元件的感应产生感应信号,用于控制所述开关单元的导通和截止。 The signal sensing unit by the power supply control unit generating the inductive element generates a sensing signal for controlling the switching unit is turned on and off. 所述供电控制单元中的二极管401用于根据所述供电控制单元中的感性元件的储能和释能不同地向所述负载装置(半导体光源)供电。 A diode unit according to the power supply control 401 can release energy storage and the power supply control unit to different inductive element supply device (semiconductor light source) to the load.

[0037]启动阶段:如图4所示,当本发明所述的半导体光源驱动系统连接到直流输入电压Vin后,Vin通过阻性元件101和开关元件300的基极301以及发射极303进行放电产生电流II,使开关元件300的集电极302和发射极303导通。 [0037] The start-up phase: 4, when the semiconductor light source driving system according to the present invention is connected to the DC input voltage Vin, Vin through the resistive element 101 and the switching element 300 of the base electrode 301 and an emitter 303 are discharged generating a current II, the switching element 300 of the collector 302 and emitter 303 is turned on. Vin通过容性元件402和负载单元501,感性元件202和开关元件300的集电极302和发射极303进行放电产生电流12。 Vin by the capacitive element 402 and the load unit 501, inductive element 202 and the emitter of the switching element and the collector 303 300 302 12 discharge current. 此后,本发明所述的半导体光源驱动系统进入第一储能阶段。 Thereafter, the semiconductor light source driving system according to the present invention enters the first energy storage stage.

[0038] 第一储能阶段:如图5所示,12通过容性元件402,容性元件402开始充电,同时12通过负载,半导体光源负载开始发光,12再通过感性元件202,感性元件202储能并在其两端产生电压V2,同时信号发生单元201受感性元件202感应产生感应电动势VI,Vl通过容性元件203、阻性元件204和开关元件300的基极301及发射极303进行放电产生电流13。13对容性元件203进行充电。 [0038] The first energy storing phase: 5, 12 through the capacitive element 402, capacitive element 402 begins to charge, while through the load 12, the load starts to emit light semiconductor light source 12 through the inductive element 202, inductive element 202 and the storage voltage V2 is generated at both ends thereof, while the receiving signal generating unit 201, the inductive element 202 generates an induced electromotive force induced VI, Vl 203 by the capacitive element, the resistive element 204 and the switching element 300 of the base 301 and the emitter electrode 303 13.13 pairs of capacitive current discharge element 203 is charged. 容性元件203两端产生图示方向电压V3。 It is generated across the capacitive element 203 in the direction shown voltage V3. 随着V3的上升,13下降,并且随之使得关元件300截止。 With the rise of V3, 13 is lowered, and with it so that the switching element 300 is turned off. 然而,由于流过感性元件202的电流不能突变,因此该电流通过二极管401流动到半导体光源负载单元501和容性元件402,并且使感性元件202两端电压V2反向。 However, since the current flowing through the inductive element 202 can not be mutated, so that the current flows through the diode 401 to the semiconductor light source unit 501 and the load capacitive element 402, the inductive element 202 and the voltage V2 across the reverse. 此后,本发明所述的半导体光源驱动系统进入释能阶段。 Thereafter, the semiconductor light source driving system according to the present invention into the discharge phases.

[0039] 释能阶段:如图6所示,信号发生单元201受感性元件202感应产生的感应电动势Vl同样反向。 [0039] The discharge phases: shown in Figure 6, the signal generating unit 201 receiving an induced electromotive force induced Vl inductive element 202 is also reversed. Vl通过二极管102、阻性元件204、容性元件203进行放电产生电流14。 Vl 102, resistive element 204, capacitive element 203 are discharged through the diode 14 generates a current. 开关元件300截止。 The switching element 300 is turned off. 感性元件202两端电压V2通过二极管401与容性元件402和半导体光源负载单元501进行放电,感性元件202释能,同时为容性元件402充电产生电压V5。 Inductive element 202 at both ends of the voltage V2 through the diode 401 and the capacitive element 402 and the semiconductor light source load discharge unit 501, the inductive element 202 can be released, while producing voltage V5 is charged capacitive element 402. 电流14对容性元件203反向充电产生反向电压V4。 Current 14 oppositely charged capacitive element 203 generates a reverse voltage V4. 在感性元件202两端电压V2下降至低于容性元件402两端电压V5时,停止释能。 Declines below the voltage across the capacitive element 402 at V5 voltage V2 across the inductive element 202 stops discharging. 此后,本发明所述的半导体光源驱动系统进入第二储能阶段。 Thereafter, the semiconductor light source driving system according to the present invention into the second storage stage. 该第二储能阶段与所述第一储能阶段有所不同,在该第二储能阶段中,所述半导体光源负载V发光。 The second energy storage phase is different from the first energy storage phase, the second energy storage phase, the V emitting semiconductor light source load.

[0040] 第二储能阶段:如图7所示,容性元件402两端电压V5通过半导体光源负载单元501放电,容性元件203两端电压V4通过阻性元件204、开关元件300的基极301和发射极303和信号发生单元的感性元件201进行放电,产生电流15,使开关元件300的集电极302和发射极303导通。 [0040] The second energy storage stage: 7, the voltage across the capacitive element 402 by a semiconductor light source load V5 discharge unit 501, the voltage across the capacitive element 203 V4 204 through a resistive element, the switching element 300 of the group 301 and the emitter electrode 303 and the signal generating unit 201 to discharge the inductive element to generate a current 15, the switching element 300 of the collector 302 and emitter 303 is turned on. Vin通过感性元件202和开关元件300的集电极302和发射极303进行放电产生电流12。 Vin through the inductive element 202 and the emitter of the switching element and the collector 303 300 302 12 discharge current. 感性元件202储能,在其两端产生电压V2。 An inductive energy storage element 202, a voltage V2 at both ends thereof. 接下来,参考第一储能阶段图中的供电控制单元和开关单元来继续描述。 Next, with reference to the first storage stage of FIG control unit and the power supply switching unit described is continued. 信号发生单元的感性元件201受感性元件202感应产生感应电动势VI,Vl通过容性元件203、阻性元件204和开关元件300的基极301及发射极303进行放电产生电流13。13对容性元件203进行充电。 Inductive element signal generating means 201 is induced by the inductive element 202 induced electromotive force VI, Vl 203 by the capacitive element, the resistive element 204 and the switching element 300 of the base 301 and emitter electrode 303, a capacitive discharge current 13.13 pairs element 203 is charged. 容性元件203两端产生图示方向电压V3。 It is generated across the capacitive element 203 in the direction shown voltage V3. 随着V3的上升,13下降,并且随之使得开关元件300截止。 With the rise of V3, 13 is lowered, and with it the switching element 300 is turned off. 然而由于流过感性元件202的电流不能突变,因此该电流通过二极管401流动到半导体光源负载单元501,并且使感性元件202两端电压V2反向。 However, since the current flowing through the inductive element 202 can not be mutated, so that the current flows through the diode 401 to the semiconductor light source load unit 501, the inductive element 202 and the voltage V2 across the reverse. 此后,本发明所述的半导体光源驱动系统再次进入释能阶段。 Thereafter, the semiconductor light source driving system according to the present invention, re-enter the discharge phases.

[0041] 然后,本发明所述的半导体光源驱动系统从释能阶段再次进入第二储能阶段,如此循环。 [0041] Then, the semiconductor light source driving system according to the present invention from a discharging phase to the second energy storage phase again, so the cycle.

[0042] 上述实施例只是例示性的,并且不希望它们限制本发明的技术方法。 [0042] The above-described embodiments are merely illustrative and are not intended to limit their art methods of the invention. 虽然已参照优选实施例详细描述了本发明,但所属领域的技术人员将了解,可在不偏离本发明技术方法的精神和范畴的情况下修改或等同替换本发明的技术方法,这些修改和等同替换也属于本发明权利要求书的保护范畴。 While there has been described in detail the present invention with reference to preferred embodiments, those skilled in the art will appreciate, may be modified or equivalents art methods of the present invention without departing from the spirit and scope of the technical methods of the present invention, modifications and equivalents Alternatively the claims also belong to the scope of protection of the claims of the present invention.

Claims (8)

  1. 1.一种自激振荡LED驱动系统,包括: 整流装置,用于连接外部电源,进行整流和滤波; 启动装置,连接整流装置; 供电装置,与启动装置连接,供电装置包括供电控制单元对负载进行供电控制; 开关单元对供电控制单元进行控制; 信号控制单元,由感性元件的副绕连接阻性及容性元件构成自激振荡对开关单元进行控制。 1. A self-oscillating LED driving system, comprising: rectifying means for connection to an external power source, rectifying and filtering; activating means connected to the rectifying means; power supply means connected to the activation means, the power supply device includes a power supply to a load control unit for power control; switching unit controls the power supply control unit; signal control unit by the sub-winding inductive element connected resistive and capacitive elements constituting the self-excited oscillation of the switching control unit.
  2. 2.如权利要求1所述的驱动系统,所述信号控制单元由感性元件(202)的副绕(201)串联容性元件(203 )和阻性元件(204 )构成自激振荡对开关单元(300 )进行控制。 2. The drive system according to claim 1, the inductive element by a signal control unit (202) secondary winding (201) series capacitive element (203) and the resistive element (204) constituting the self-excited oscillation of the switching unit (300) is controlled.
  3. 3.如权利要求1所述的驱动系统,所述开关单元(300)的第一端(301)与信号控制单元之阻性元件(204)的第二端连接。 The drive system of claim 1, a second end connected to a first end (301) of the switch unit (300) with a resistive element (204) a signal of the control unit.
  4. 4.如权利要求1所述的驱动系统,所述信号控制单元由感性元件(202)、二极管(401)和容性元件(402)构成,其中,二极管(401)的第一端和容性元件(402)的第一端连接,容性元件(402)的第二端与感性元件(202)的第一端连接,而感性元件(202)的第二端、二极管(401)的第二端连接于开关元件(300)的第二端(302)。 4. The drive system according to claim 1, the inductive element by a signal control unit (202) Diodes (401) and a capacitive element (402), and wherein the diode (401) and a first end of the capacitive element (402) connected to a first end, a first end connected to the capacitive element (402) and a second end of the inductive element (202) and the second end of the inductive element (202), a diode (401) a second a second end (302) connected to the switch terminal element (300).
  5. 5.如权利要求1所述的驱动系统,所述启动装置包含阻性元件(101)、二极管(102),其中,阻性元件(101)的第一端连接于整流装置,阻性元件(101)的第二端连接于二极管(102)的第一端,而二极管(102)的第二端接地。 5. The drive system according to claim 1, the resistive element comprises a resistive element means (101), a diode (102), wherein the resistive element (101) a first end connected to the rectifying means, the activation ( 101) second end is connected to a first terminal of the diode (102), the diode (102) to a second end.
  6. 6.一种半导体照明装置,包括: 半导体光源负载; 整流装置,用于连接外部电源,进行整流和滤波; 启动装置,连接整流装置; 供电装置,与启动装置连接,供电装置包括供电控制单元对负载进行供电控制; 开关单元对供电控制单元进行控制; 信号控制单元,由感性元件的副绕连接阻性及容性元件构成自激振荡对开关单元进行控制。 A semiconductor lighting device, comprising: a semiconductor light source load; rectifying means for connection to an external power source, rectifying and filtering; activating means connected to the rectifying means; power supply means connected to the activation means, the power supply device includes a power supply control unit load power supply control; switching unit controls the power supply control unit; signal control unit by the sub-winding inductive element connected resistive and capacitive elements constituting the self-excited oscillation of the switching control unit.
  7. 7.如权利要求6所述的半导体照明装置,所述负载为单个或多个LED组。 The semiconductor lighting device according to claim 6, the load is a single or a plurality of LED groups.
  8. 8.如权利要求6所述的半导体照明装置,所述LED组的构成方式包括但不限于串联连接或并联连接或串并联连接的混合型连接结构来电连接。 8. The semiconductor lighting device according to claim 6, the LED group constituting manner including but not limited to a series type hybrid connector connection structure or connected in parallel, or electrically connected.
CN 201210459804 2012-11-15 2012-11-15 A self-excited oscillation drive system and led semiconductor lighting device CN103813577B (en)

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