CN202026503U - Light emitting diode (LED) skip cycle compensation controlling and driving circuit without electrolytic capacitor - Google Patents
Light emitting diode (LED) skip cycle compensation controlling and driving circuit without electrolytic capacitor Download PDFInfo
- Publication number
- CN202026503U CN202026503U CN2011200659307U CN201120065930U CN202026503U CN 202026503 U CN202026503 U CN 202026503U CN 2011200659307 U CN2011200659307 U CN 2011200659307U CN 201120065930 U CN201120065930 U CN 201120065930U CN 202026503 U CN202026503 U CN 202026503U
- Authority
- CN
- China
- Prior art keywords
- circuit
- led
- pfc
- electrolytic capacitor
- cycle compensation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Rectifiers (AREA)
Abstract
The utility model relates to a light emitting diode (LED) skip cycle compensation controlling and driving circuit without an electrolytic capacitor, which comprises a rectification bridge, a power factor correction (PFC) circuit, a direct current to direct current (DC/DC) conversion circuit, a controller and a skip cycle compensation circuit, wherein one end of the rectification bridge is connected with a single-phase alternating current power gird, and the other end of the skip cycle compensation circuit is sequentially connected with the PFC circuit, the DC/DC conversion circuit and an LED. The skip cycle compensation circuit is connected with the PFC circuit through the controller. The mains supply passes through the rectification bridge and the PFC circuit for rectification and power factor correction, and then passes through the DC/DC conversion circuit to output specific pulse width modulation (PWM) waves so as to control an LED driver, thereby enabling the LED to output scheduled luminous flux. The cycle-crossing compensation circuit and the controller control open and close of a switching tube. The LED skip cycle compensation controlling and driving circuit without the electrolytic capacitor can meet the requirement of PFC, reduces the use of the electrolytic capacitor through the skip cycle compensation circuit so as to prolong service life of an LED driving circuit, and is suitable for solar LED lighting occasion.
Description
Technical field
The utility model belongs to illumination Drive Control Technique field, is specifically related to a kind of no electrolytic capacitor LED and strides cycle compensation control Driver Circuit.
Background technology
In recent years, along with the appearance of semi-conducting material and the breakthrough of light-emitting diode packaging technology, the LED illumination has developed into a kind of new type light source gradually and has obtained extensive use.LED has weak point long, start-up time in life-span, low pressure operation, point-source of light, sound construction, and mercuryless in addition performance of closing no ultra-violet radiation determines the use of LED to have more significance for environmental protection and energy savings.Thereby LED be acknowledged as have development prospect the 4th generation lighting source, the application of LED also expands to general lighting field and special source field gradually from backlight and signal direction indication, become light source and lighting technology the development an important research direction.
LED is the unidirectional conduction device of the low-voltage of a current drives, thereby as the problem of lighting source with regard to needs solution power conversion, drive circuit should reasonably design, and demonstrates fully advantages such as performance LED long-life, high light efficiency, high stability.LED by mains-supplied drives, by adapter and driver two-part structure.Wherein the function of adapter is to realize PFC and AC-DC conversion, realizes filtering and energy storage with regard to needing the bigger electrochemical capacitor of capacitance.Yet the life-span of general electrochemical capacitor has only 5000 hours, does not match with LED50000 hour desired life, becomes to have a strong impact on the LED driveability and the principal element in LED power source integral life-span.
The utility model proposes to utilize and stride the solar LED driving power that the cycle compensation technique realizes, can effectively reduce the use of electrochemical capacitor in the driving power.
Summary of the invention
The purpose of this utility model is to provide a kind of no electrolytic capacitor LED to stride cycle compensation control Driver Circuit, and the conversion by control circuit reaches the purpose of removing rectification DC side electrochemical capacitor, increases the life-span and the reliability of led drive circuit.It is suitable for solar LED illumination applications.
The no electrolytic capacitor LED that the utility model proposes strides cycle compensation control Driver Circuit, by rectifier bridge 2, pfc circuit 3, DC/DC translation circuit 4, controller 6 and stride cycle compensating circuit 7 and form, wherein: rectifier bridge 2 one ends connect single phase alternating current (A.C.) electrical network 1, the other end connects pfc circuit 3 successively, DC/DC translation circuit 4 and LED5, stride cycle compensating circuit 7 and connect pfc circuit by controller 6, civil power carries out rectification and power factor correction through rectifier bridge 2 and pfc circuit 3, again through the specific PWM ripple of DC/DC translation circuit 4 outputs, control LED5 drives, make LED5 realize predetermined luminous flux output, stride cut-offfing of cycle compensating circuit 7 and controller 6 control switch pipes.
In the utility model, above-mentioned each partly circuit all are prior aries, do not appear in the newspapers but each several part circuit such as the utility model mode connected as yet.Connection by the above-mentioned control circuit structure of the utility model can be achieved as follows function:
Normal at line voltage and electric current output, adopt the dicyclo control of conventional output load current and output loading voltage, to reach the purpose that makes output voltage stabilization and constant current control; When curtage requires less than setting, because rectifier DC side no electrolytic capacitor or the inorganic electric capacity of low capacity is only arranged, the additional in addition cycle compensation control circuit of striding, make the PFC switch under these situations be in the complete period conducting state in the next cycle, reach the requirement of output voltage and electric current, make the LED electric current can keep constant.
The utility model is striden the cycle compensation control circuit by additional, can make the constant electric current of LED output, removes rectifier DC side electrochemical capacitor and reduces voltage fluctuation.
The utility model compared with prior art has following advantage:
1) utilizes with the additional cycle compensation control circuit removal rectifier DC side electrochemical capacitor of striding, increase driver life-span and reliability.Improve the led light source overall performance.
2) adopt the cycle manner of comparison, reduce the complexity of fluctuation and system's control of dc voltage.
3) native system can be used for the LED Drive and Control Circuit, realizes driving design and is complementary with the LED life-span, embodies the advantage of LED in application to greatest extent.
4) owing to avoided the use of electrochemical capacitor, thereby make LED drive design volume to reduce that system complexity reduces.
Description of drawings
Fig. 1 is a system architecture diagram of the present utility model.
Fig. 2 is the cycle compensating circuit structure chart of striding of the present utility model.
Fig. 3 is the circuit structure diagram of the utility model embodiment 1.
Number in the figure: 1 is the single phase alternating current (A.C.) electrical network, and 2 is rectifier bridge, and 3 is pfc circuit, and 4 is the DC/DC translation circuit, and 5 is LED, and 6 is controller, and 7 for striding the cycle compensating circuit.
Embodiment
Further specify the utility model in conjunction with the accompanying drawings below by embodiment.
Embodiment 1: as shown in Figure 1-Figure 3, stride cycle compensating circuit 7 and be 20uF metallic film electric capacity, the BUCK circuit that DC/DC translation circuit 4 is formed for IRF540, pfc circuit 3 are the active power factor compensation circuit mode that classical boundary scheme is controlled, and are main power tube with IRF840.Rectifier bridge 2 one ends connect single phase alternating current (A.C.) electrical network 1, the other end connects pfc circuit 3, DC/DC translation circuit 4 and LED5 successively, stride cycle compensating circuit 7 and connect pfc circuit by controller 6, civil power carries out rectification and power factor correction through rectifier bridge 2 and pfc circuit 3, again through the specific PWM ripple of DC/DC translation circuit 4 outputs, control LED5 drives, and makes LED5 realize predetermined luminous flux output, strides cut-offfing of cycle compensating circuit 7 and controller 6 control switch pipes.The utility model is by striding cycle compensating circuit 7, switch opened in certain cycle circuit is charged, and reduces the demand to storage capacitor, thereby can realize replacing electrochemical capacitor with thin-film capacitor.
Claims (1)
1. a no electrolytic capacitor LED strides cycle compensation control Driver Circuit, by rectifier bridge (2), pfc circuit (3), DC/DC translation circuit (4), controller (6) and stride cycle compensating circuit (7) and form, it is characterized in that: rectifier bridge (2) one ends connect single phase alternating current (A.C.) electrical network (1), the other end connects pfc circuit (3) successively, DC/DC translation circuit (4) and LED (5), stride cycle compensating circuit (7) and connect pfc circuit (3) by controller (6), civil power carries out rectification and power factor correction through rectifier bridge (2) and pfc circuit (3), pass through DC/DC translation circuit (4) output PWM ripple again, control LED (5) drives, make LED (5) realize predetermined luminous flux output, stride cut-offfing of cycle compensating circuit (7) and controller (6) control switch pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200659307U CN202026503U (en) | 2011-03-15 | 2011-03-15 | Light emitting diode (LED) skip cycle compensation controlling and driving circuit without electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200659307U CN202026503U (en) | 2011-03-15 | 2011-03-15 | Light emitting diode (LED) skip cycle compensation controlling and driving circuit without electrolytic capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202026503U true CN202026503U (en) | 2011-11-02 |
Family
ID=44851434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200659307U Expired - Lifetime CN202026503U (en) | 2011-03-15 | 2011-03-15 | Light emitting diode (LED) skip cycle compensation controlling and driving circuit without electrolytic capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202026503U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102523654A (en) * | 2011-12-20 | 2012-06-27 | 凹凸电子（武汉）有限公司 | Drive circuit of LED light source, control circuit thereof and control method thereof |
-
2011
- 2011-03-15 CN CN2011200659307U patent/CN202026503U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102523654A (en) * | 2011-12-20 | 2012-06-27 | 凹凸电子（武汉）有限公司 | Drive circuit of LED light source, control circuit thereof and control method thereof |
| US8598792B2 (en) | 2011-12-20 | 2013-12-03 | O2Micro Inc. | Driving circuit for powering LED light sources |
| CN102523654B (en) * | 2011-12-20 | 2014-04-02 | 凹凸电子（武汉）有限公司 | Drive circuit of LED light source, control circuit thereof and control method thereof |
| TWI507081B (en) * | 2011-12-20 | 2015-11-01 | O2Micro Int Ltd | Driving circuit and control circuit for powering light source |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102802318B (en) | Flyback-type quick-start LED (Light-Emitting Diode) drive circuit structure | |
| CN101958660B (en) | Dual-Sepic buck-boost output parallel combined inverter | |
| CN101867297B (en) | Single-phase soft-switching and high-gain boost converter for distributed photovoltaic power generation | |
| CN103997827B (en) | A kind of high efficiency no electrolytic capacitor LED drive power based on Boost circuit | |
| CN101917131B (en) | Cascade Buck-boost high power factor alternating current-direct current (AC-DC) converter and current converting method | |
| CN102665322B (en) | Driving power supply without electrolytic capacitor | |
| CN103997828B (en) | A kind of no electrolytic capacitor LED drive power based on Buck circuit | |
| CN102348319A (en) | Light-emitting diode lamp drive power supply | |
| CN103917017A (en) | Single-stage type non-electrolytic capacitor AC/DC LED constant current drive power source | |
| CN101882881B (en) | Capacitance reducing method and associated devices | |
| CN202514138U (en) | Drive power supply for non-electrolytic capacitor | |
| CN104768291A (en) | Improved Cuk LED drive power source without electrolytic capacitor | |
| CN103762868B (en) | The active valley fill type AC/DC convertor of High Power Factor | |
| CN102548102B (en) | Solar LED (light emitting diode) streetlamp and power supply circuit thereof | |
| CN202310215U (en) | LED lamp driving power supply | |
| CN202026503U (en) | Light emitting diode (LED) skip cycle compensation controlling and driving circuit without electrolytic capacitor | |
| CN104411041A (en) | Long-lifetime LED driving power supply of single-inductor three-port converter | |
| CN203645390U (en) | Charging and discharging circuit used for intelligent photovoltaic LED street lamp | |
| CN215071777U (en) | Wisdom street lamp | |
| CN201803292U (en) | Solar light-emitting diode (LED) yard lamp | |
| CN105915086B (en) | High-efficiency AC/D/C power circuit and its control method and method of supplying power to | |
| TW201427248A (en) | Renewable energy power inverter | |
| CN107401720A (en) | One kind carries stand-by power supply solar LED street lamp | |
| KR200384106Y1 (en) | Led | |
| CN202514135U (en) | Alternating-current driving light emitting diode (LED) circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Lin Yandan Inventor after: Sun Yaojie Inventor after: Song Jieqiong Inventor after: Tong Liqing Inventor after: Qiu Jingjing Inventor before: Lin Yandan Inventor before: Sun Yaojie Inventor before: Song Jieqiong Inventor before: Tong Liqing Inventor before: Qiu Jingjing |
|
| CX01 | Expiry of patent term |
Granted publication date: 20111102 |
|
| CX01 | Expiry of patent term |