CN108429449A - A kind of Boost power factor correctors of constant current output - Google Patents
A kind of Boost power factor correctors of constant current output Download PDFInfo
- Publication number
- CN108429449A CN108429449A CN201810421577.8A CN201810421577A CN108429449A CN 108429449 A CN108429449 A CN 108429449A CN 201810421577 A CN201810421577 A CN 201810421577A CN 108429449 A CN108429449 A CN 108429449A
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- CN
- China
- Prior art keywords
- power factor
- boost power
- output
- detection module
- constant current
- Prior art date
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- Pending
Links
- 238000001514 detection method Methods 0.000 claims abstract description 27
- 230000001681 protective effect Effects 0.000 claims description 10
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 7
- 230000005611 electricity Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
-
- 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
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
-
- 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
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
The invention discloses a kind of Boost power factor correctors of constant current output, applied to field of LED drive, including a Boost power factor corrector, output voltage signal detection module and an output current signal detection module there are one being separately connected in the output end of the Boost power factor correctors, the output voltage signal detection module and the output current signal detection module are connect with a signal processing module, the signal processing module is connect with a signal control module, the signal control module is connect with the Boost power factor correctors.The Boost power factor correctors of the constant current output are monopolar lines, and function loss only has level-one that can save energy consumption as the driver of LED light；Since the energy consumption of the Boost power factor correctors of constant current output reduces, its reliability can be improved, since it is monopolar line, component is less, can reduce cost.
Description
Technical field
The invention belongs to field of LED drive technologies, and in particular to a kind of Boost power factor correctors of constant current output.
Background technology
The measure of energy-saving and emission-reduction is carried out in China energetically in recent years.In illuminating industry, LED light is gradually popularized, because of LED light ratio
Traditional tengsten lamp wants energy saving 7~8 times.The light efficiency that the whether energy-efficient index of LED light is LED light is weighed, at present LED light on the market
Light efficiency generally in 100lm/W or so, the space that is also much promoted.In order to improve the light efficiency of LED, main path is to improve
The efficiency of LED driver.Traditional LED driver all uses Boost-Buck topological structures, this is twin-stage circuit, and prime is
Constant pressure output Boost power factor correctors (Constant Voltage Boost Power Factor Correction,
Abbreviation CVBPFC), rear class is DC-DC converter.Two-stage circuit, loss are exactly the sum of two-stage loss, these losses can all become
Heat is wasted.
Therefore, it is urgent to provide a kind of Boost power factor correctors that can be saved energy consumption, reduce cost as LED light
Driver, and then realize further energy-efficient purpose.
Invention content
In order to solve the above problem of the existing technology, the present invention provides a kind of Boost power of constant current output because
Number corrector.
Technical scheme is as follows：
A kind of Boost power factor correctors of constant current output are applied to field of LED drive, including a Boost power
Factor corrector, the output end of the Boost power factor correctors be separately connected there are one output voltage signal detect mould
Block and an output current signal detection module, the output voltage signal detection module and the output current signal detect mould
Block is connect with a signal processing module, and the signal processing module is connect with a signal control module, the signal control
Molding block is connect with the Boost power factor correctors.
Preferably, the Boost power factor correctors of the constant current output further include one for protecting the output electricity
Flow the protective device of signal detection module and the signal processing module, the input terminal and output end of the protective device respectively with
The output end of the output current signal detection module is connected with input terminal.
It is further preferred that the protective device is two concatenated diodes.
Compared with prior art, technical solution provided by the invention has the advantages that or advantage：
1, the Boost power factor correctors of constant current output provided by the invention are monopolar lines, and function loss only has
Level-one, it is more much smaller than two-stage loss as the driver of LED light, realize the purpose for saving energy consumption.
2, since the energy consumption of the Boost power factor correctors of constant current output reduces, the heat that driver comes out is just
Few, heat has lacked the service life for just improving component, to improve reliability.
It is 3, less than the element of two-stage circuit since the Boost power factor correctors of constant current output are single-stage circuits,
Cost can be reduced.
Description of the drawings
Fig. 1 is the structural schematic diagram of the embodiment of the present invention；
Fig. 2 is the connection diagram of protective device in the embodiment of the present invention.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
The every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
Embodiment
As shown in Figure 1, an embodiment of the present invention provides a kind of Boost power factor correctors of constant current output, it is applied to
Field of LED drive, including a Boost power factor corrector 1 connect respectively in the output end of Boost power factor correctors 1
Output voltage signal detection module 2 and an output current signal detection module 3 there are one connecing, output voltage signal detection module
2 and output current signal detection module 3 connect with 4 pieces of a signal processing mould, signal processing module 4 and signal control
Module 5 connects, and signal control module 5 is connect with Boost power factor correctors 1.
The principle of the Boost power factor correctors of the constant current output is：
Output voltage and current signal are detected from the output end of Boost power factor correctors first, then carries out signal
Processing, compares two signals, then the signal after control process, finally feeds back to Boost pfc circuits, forms a closed loop control
System, achievees the purpose that constant current output.
In specific implementation process, in order to provide stable PFC and lower harmonic distortion, the present invention
The minimum output voltage of setting Boost power factor correctors is higher than the 1.42 of the highest alternating voltage of input in embodiment
Times.
In specific implementation process, constant current may be used in the output current signal detection module 3 in the embodiment of the present invention
Diode can also use sample resistance, can also be other components certainly, not limit herein.
In specific implementation process, the output voltage signal detection module 2 in the embodiment of the present invention compares for detecting
The voltage at 3 both ends of output current signal detection module.It can be a comparison circuit, it is of course also possible to be other detections
Component does not limit herein.
In specific implementation process, the signal processing module 4 in the embodiment of the present invention is used to examine output current signal
The detection data for surveying module 3 and output voltage signal detection module 2 is handled, and feeds back to signal control module 5.Therefore,
Signal processing module 4 in the embodiment of the present invention can be a feedback circuit, it is of course also possible to be other processing elements devices
Part does not limit herein.
In specific implementation process, the signal control module 5 in the embodiment of the present invention is used to be based on the signal processing
4 feedack of module controls Boost power factor correctors 1 and carries out boost or depressurization.The type of signal control module 5 has very
It is more, for example can be micro-chip processor, a microcontroller, it can also be a feedback circuit, do not limit herein.
In specific implementation process, due to the Boost power factor correctors of the constant current output in the embodiment of the present invention
Output voltage be high pressure, there are one large capacity filter capacitor C1 for output end, when the Boost power factors school of this constant current output
When positive device (CCBPFC) is applied to LED drivings, even if also having if driver closes on input voltage filter capacitor C1 very high
Residual electricity, and the retention time is also long, because LED is not resistive load, almost without discharge capability.If at this time accidentally
Circuit output terminal shortcircuit can generate very high pulse high current moment, and output current signal detection module 3 can be born not at this time
Firmly high current and burn out change open circuit.In order to avoid there is the above situation, preferably, constant current described in the embodiment of the present invention is defeated
The Boost power factor correctors gone out further include a protective device 6 for protecting the output current signal detection module,
The input terminal and output end of protective device 6 are connect with the output end of output current signal detection module 6 and input terminal respectively, are such as schemed
Shown in 2.It is further preferred that protective device 6 is resistant to big pulse current diode D1, D2 series connection by two in the embodiment of the present invention
It forms.By the way that protective device is arranged, the component for leading to damage because of the residual electricity of short circuit release can be repeatedly protected for a long time.
The present invention is not limited to above-mentioned optional embodiment, anyone can obtain various other under the inspiration of the present invention
The product of form, however, make any variation in its shape or structure, it is every to fall into the claims in the present invention confining spectrum
Technical solution, be within the scope of the present invention.
Claims (3)
1. a kind of Boost power factor correctors of constant current output, which is characterized in that including a Boost PFC
Device is separately connected in the output end of the Boost power factor correctors there are one output voltage signal detection module and one
Output current signal detection module, the output voltage signal detection module and the output current signal detection module are with one
The connection of a signal processing module, the signal processing module are connect with a signal control module, the signal control module and
The Boost power factor correctors connection.
2. the Boost power factor correctors of constant current output according to claim 1, which is characterized in that the constant current is defeated
The Boost power factor correctors gone out further include a protective device for protecting the output current signal detection module,
The input terminal and output end of the protective device connect with the output end of the output current signal detection module and input terminal respectively
It connects.
3. the Boost power factor correctors of constant current output according to claim 2, which is characterized in that the protection dress
It is set to two concatenated diodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810421577.8A CN108429449A (en) | 2018-05-04 | 2018-05-04 | A kind of Boost power factor correctors of constant current output |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810421577.8A CN108429449A (en) | 2018-05-04 | 2018-05-04 | A kind of Boost power factor correctors of constant current output |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108429449A true CN108429449A (en) | 2018-08-21 |
Family
ID=63162376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810421577.8A Pending CN108429449A (en) | 2018-05-04 | 2018-05-04 | A kind of Boost power factor correctors of constant current output |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108429449A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6222746B1 (en) * | 1998-02-09 | 2001-04-24 | Samsung Electronics Co., Ltd. | Power supply device and method with a power factor correction circuit |
| CN102130579A (en) * | 2011-03-18 | 2011-07-20 | 上海交通大学 | Reduced open-loop control based single-stage power factor corrector |
| US20110216565A1 (en) * | 2008-11-11 | 2011-09-08 | Gree Electric Appliances Inc. Of Zhuhai | One-cycle controlled power factor correction method |
| CN203572873U (en) * | 2013-08-14 | 2014-04-30 | 上海耀华称重系统有限公司 | Low-cost overcurrent protection circuit for current detection |
| CN104244512A (en) * | 2014-07-28 | 2014-12-24 | 李玉峰 | Boost type LED drive short circuit overload projecting circuit |
| CN106226682A (en) * | 2016-08-01 | 2016-12-14 | 广东美的制冷设备有限公司 | Power factor corrector and the method for diagnosing faults of current detection circuit, device |
| CN106612068A (en) * | 2015-10-26 | 2017-05-03 | 马少峰 | Power factor correction with constant current output function |
-
2018
- 2018-05-04 CN CN201810421577.8A patent/CN108429449A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6222746B1 (en) * | 1998-02-09 | 2001-04-24 | Samsung Electronics Co., Ltd. | Power supply device and method with a power factor correction circuit |
| US20110216565A1 (en) * | 2008-11-11 | 2011-09-08 | Gree Electric Appliances Inc. Of Zhuhai | One-cycle controlled power factor correction method |
| CN102130579A (en) * | 2011-03-18 | 2011-07-20 | 上海交通大学 | Reduced open-loop control based single-stage power factor corrector |
| CN203572873U (en) * | 2013-08-14 | 2014-04-30 | 上海耀华称重系统有限公司 | Low-cost overcurrent protection circuit for current detection |
| CN104244512A (en) * | 2014-07-28 | 2014-12-24 | 李玉峰 | Boost type LED drive short circuit overload projecting circuit |
| CN106612068A (en) * | 2015-10-26 | 2017-05-03 | 马少峰 | Power factor correction with constant current output function |
| CN106226682A (en) * | 2016-08-01 | 2016-12-14 | 广东美的制冷设备有限公司 | Power factor corrector and the method for diagnosing faults of current detection circuit, device |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180821 |
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| RJ01 | Rejection of invention patent application after publication |