CN204377187U - A kind of LED Modular street lamp with single-stage PFC control circuit - Google Patents
A kind of LED Modular street lamp with single-stage PFC control circuit Download PDFInfo
- Publication number
- CN204377187U CN204377187U CN201420810292.0U CN201420810292U CN204377187U CN 204377187 U CN204377187 U CN 204377187U CN 201420810292 U CN201420810292 U CN 201420810292U CN 204377187 U CN204377187 U CN 204377187U
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- China
- Prior art keywords
- circuit
- stage pfc
- control circuit
- pfc control
- semiconductor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/72—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps in street lighting
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- Led Devices (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Dc-Dc Converters (AREA)
Abstract
The utility model is a kind of LED Modular street lamp with single-stage PFC control circuit, comprise power circuit and at least one single-stage PFC control circuit, the power input of each described single-stage PFC control circuit is all attempted by the output of described power circuit, and the output of this single-stage PFC control circuit each is respectively independently LED load and powers; The utility model overall structure is simple, adopts multiple single-stage PFC circuit in parallel to be that LED light source module is powered, can reduce the power of single control chip IC1, thus reduce costs, improve stability and the fail safe of whole circuit; The favorable expandability of circuit, according to the demand of the LED light source of different capacity, only need increase or reduce the quantity of corresponding single-stage PFC circuit, and make range of application of the present utility model wider, production cost is lower.
Description
Technical field
The utility model relates to LED illumination circuit engineering field, is specifically related to a kind of LED Modular street lamp with single-stage PFC control circuit.
Background technology
Along with the development of LED technology, at lighting field because having the advantages such as light efficiency is high, energy consumption is low, light is soft, being used on a large scale, having been replaced traditional incandescent lamp gradually.The high-power PFC chip of the many employings of existing LED control circuit one is as control chip, power for multiple LED light source module at the output of control circuit simultaneously, control difficulty is large, if one or more LED light source module lost efficacy, the electric current caused in other LED light source module is increased, shorten its useful life, if PFC chip breaks down simultaneously, whole LED light source module will be made to use, and high-power PFC chip cost is high, be not easy to large-scale application promote, simultaneously because prior art present, the power of single PFC chip often can not meet the demand of some superpower applications.
Utility model content
The utility model, for the deficiencies in the prior art, proposes a kind of structure simple, adopts multiple single-stage PFC circuit in parallel, for LED light source module is powered respectively, when not improving single PFC chip power, can meet the demand that high-power LED light source is powered, concrete technical scheme is as follows:
A kind of LED Modular street lamp with single-stage PFC control circuit, comprise power circuit and at least one single-stage PFC control circuit, the power input of each described single-stage PFC control circuit is all attempted by the output of described power circuit, and the output of this single-stage PFC control circuit each is respectively independently LED load and powers; Described single-stage PFC control circuit is provided with transformer T1 and control chip IC1, one end of described transformer T1 primary coil connects described power circuit, the other end is connected on the drain electrode of metal-oxide-semiconductor Q1, ground connection after the source electrode series resistor R15 of this metal-oxide-semiconductor Q1, the source electrode of this metal-oxide-semiconductor Q1 is also connected on the sheet choosing end of described control chip IC1, and the grid of this metal-oxide-semiconductor Q1 is connected on the control end of described control chip IC1; The described former limit of transformer T1 is also provided with leakage inductance magnetic test coil, and an end of this leakage inductance magnetic test coil is connected on the feedback end of described control chip IC1, other end ground connection; The two ends of the secondary coil of described transformer T1 are circuit output end.
The utility model is work like this: in single-stage PFC control circuit circuit, control chip IC1 output pulse signal, driven MOS pipe Q1 conducting, alternating source is produced on the former limit of transformer T1, under the effect of transformer T1, the secondary out-put supply of transformer T1, for LED light source module is powered, while transformer T1 works, leakage inductance coil by the signal feedback that detects to coremaking sheet IC1, this control chip IC1, according to the size of feedback signal, completes the control to metal-oxide-semiconductor Q1, realizes LED light source module constant current-supplying;
In the utility model, according to LED light source module power and quantity, select multiple single-stage PFC control circuit to be respectively LED light source module to power, the power of single control chip IC1 can be reduced, reduce costs, time a control chip IC1 breaks down wherein simultaneously, other LED light source module also can normally work, use the utility model more reliable, range of application is wider.
For better realizing the utility model, may further be:
Diode D3 is also connected with between the drain electrode of described transformer T1 primary coil and metal-oxide-semiconductor Q1, the positive pole of this diode D3 is connected between the drain electrode of described transformer T1 primary coil and metal-oxide-semiconductor Q1, negative pole is connected on the output of described power circuit after electric capacity C7, and at the two ends of this electric capacity C7, also cross-over connection has resistance R11.The setting of electric capacity C7 can increase the utilance to power supply, makes whole circuit efficiency higher simultaneously.
The beneficial effects of the utility model are: overall structure is simple, adopts multiple single-stage PFC circuit in parallel to be that LED light source module is powered, can reduce the power of single control chip IC1, thus reduce costs, improve stability and the fail safe of whole circuit; The favorable expandability of circuit, according to the demand of the LED light source of different capacity, only need increase or reduce the quantity of corresponding single-stage PFC circuit, and make range of application of the present utility model wider, production cost is lower.
Accompanying drawing explanation
Fig. 1 is structured flowchart of the present utility model;
Fig. 2 is electrical block diagram of the present utility model.
Embodiment
Below in conjunction with drawings and the specific embodiments, the utility model is described in further detail.
As depicted in figs. 1 and 2: a kind of LED Modular street lamp with single-stage PFC control circuit, comprise power circuit and three single-stage PFC control circuits, wherein power circuit is bridge rectifier, the power input of each described single-stage PFC control circuit is all attempted by the output of described power circuit, and the output of this single-stage PFC control circuit each is respectively independently LED load and powers, described single-stage PFC control circuit is provided with transformer T1 and control chip IC1, one end of described transformer T1 primary coil connects described power circuit, the other end is connected on the drain electrode of metal-oxide-semiconductor Q1, diode D3 is also connected with between the drain electrode of described transformer T1 primary coil and metal-oxide-semiconductor Q1, the positive pole of this diode D3 is connected between the drain electrode of described transformer T1 primary coil and metal-oxide-semiconductor Q1, negative pole is connected on the output of described power circuit after electric capacity C7, at the two ends of this electric capacity C7, also cross-over connection has resistance R11, ground connection after the source electrode series resistor R15 of this metal-oxide-semiconductor Q1, the source electrode of this metal-oxide-semiconductor Q1 is also connected on the sheet choosing end of described control chip IC1, the grid of this metal-oxide-semiconductor Q1 is connected on the control end of described control chip IC1, the described former limit of transformer T1 is also provided with leakage inductance magnetic test coil, and an end of this leakage inductance magnetic test coil is connected on the feedback end of described control chip IC1, the two ends of the secondary coil of described transformer T1 are connected in LED light source module after current rectifying and wave filtering circuit.
Claims (2)
1. the LED Modular street lamp with single-stage PFC control circuit, comprise power circuit and at least one single-stage PFC control circuit, it is characterized in that: the power input of each described single-stage PFC control circuit is all attempted by the output of described power circuit, the output of this single-stage PFC control circuit each is respectively independently LED load and powers;
Described single-stage PFC control circuit is provided with transformer T1 and control chip IC1, one end of described transformer T1 primary coil connects described power circuit, the other end is connected on the drain electrode of metal-oxide-semiconductor Q1, ground connection after the source electrode series resistor R15 of this metal-oxide-semiconductor Q1, the source electrode of this metal-oxide-semiconductor Q1 is also connected on the sheet choosing end of described control chip IC1, and the grid of this metal-oxide-semiconductor Q1 is connected on the control end of described control chip IC1;
The described former limit of transformer T1 is also provided with leakage inductance magnetic test coil, and an end of this leakage inductance magnetic test coil is connected on the feedback end of described control chip IC1, other end ground connection;
The two ends of the secondary coil of described transformer T1 are circuit output end.
2. be with the LED Modular street lamp of single-stage PFC control circuit according to claim 1, it is characterized in that: between the drain electrode of described transformer T1 primary coil and metal-oxide-semiconductor Q1, be also connected with diode D3, the positive pole of this diode D3 is connected between the drain electrode of described transformer T1 primary coil and metal-oxide-semiconductor Q1, negative pole is connected on the output of described power circuit after electric capacity C7, and at the two ends of this electric capacity C7, also cross-over connection has resistance R11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420810292.0U CN204377187U (en) | 2014-12-19 | 2014-12-19 | A kind of LED Modular street lamp with single-stage PFC control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420810292.0U CN204377187U (en) | 2014-12-19 | 2014-12-19 | A kind of LED Modular street lamp with single-stage PFC control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204377187U true CN204377187U (en) | 2015-06-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420810292.0U Expired - Fee Related CN204377187U (en) | 2014-12-19 | 2014-12-19 | A kind of LED Modular street lamp with single-stage PFC control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204377187U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106896291A (en) * | 2016-12-25 | 2017-06-27 | 惠州三华工业有限公司 | A kind of utilization single- stage PFC+DC DC synchronous bucks are leaked hunting the device of sense |
-
2014
- 2014-12-19 CN CN201420810292.0U patent/CN204377187U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106896291A (en) * | 2016-12-25 | 2017-06-27 | 惠州三华工业有限公司 | A kind of utilization single- stage PFC+DC DC synchronous bucks are leaked hunting the device of sense |
| CN106896291B (en) * | 2016-12-25 | 2019-05-10 | 惠州三华工业有限公司 | It is a kind of to be leaked hunting the device of sense using single- stage PFC+DC-DC synchronous buck |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150603 Termination date: 20161219 |