CN201878407U - Electronic ballast with active power factor correcting self-protection - Google Patents
Electronic ballast with active power factor correcting self-protection Download PDFInfo
- Publication number
- CN201878407U CN201878407U CN2010206211431U CN201020621143U CN201878407U CN 201878407 U CN201878407 U CN 201878407U CN 2010206211431 U CN2010206211431 U CN 2010206211431U CN 201020621143 U CN201020621143 U CN 201020621143U CN 201878407 U CN201878407 U CN 201878407U
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- power factor
- circuit
- ballast
- pin
- chip
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- 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.)
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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
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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
- 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 utility model belongs to the field of illumination technology, and relates to an electronic ballast, in particular to an electronic ballast with the active power factor correction self-protection. The electronic ballast comprises a power factor correcting circuit with an IR2166 type chip and a ballast control circuit; the electronic ballast has high-power factor and low total harmonic distortion and powerful protection function, thus the service life of the ballast is greatly prolonged; under the abnormal fault condition, the ballast can automatically start self-protection and has a restarting function. The electronic ballast with active power factor correction self-protection has high power factor, can preheat by frequency conversion, can perform self-protection in abnormal fault and can restart after the fault is eliminated.
Description
Technical field
The utility model belongs to lighting technical field, relates to a kind of electric ballast, especially a kind of electric ballast with Active Power Factor Correction self-shield.
Background technology
At present, the fluorescent lamp ballast great majority are electric ballasts in the existing technology.Advantage such as electric ballast has energy-conservation, no ac stroboflash and hum, low pressure build-up of luminance are good, in light weight.It is made up of rectification circuit, circuits for triggering, HF switch oscillator and LC resonant tank etc. usually.When the fracture of the loose contact of fluorescent tube pin, tube filament, the weak discharge of fluorescent tube glimmer that anomaly such as build-up of luminance and mains switch impact does not occur, unusual overvoltage appears because of current break causes inductance coil, damage electronic component, particularly the switching oscillator power tube causes electric ballast to damage.Thereby the reliability that improves electric ballast is current production and the key problem in technology applied.
Fusing fuse reaction speed commonly used at present is slow, and poor reliability can not play a protective role to unusual damage.In recent years; some producers have proposed new departure; adopt the fluorescent lamp starter to absorb overvoltage pulse; it is parallel to the fluorescent lamp starter of two serial connections on the resonant capacitance; after abnormal pressure occurring; starter discharge and two electrodes are connected; but the starter electrode of this scheme is an on-off action; self cause a high-frequency current again; the impact of voltage is unfavorable for protecting electric ballast, influences lamp tube service life; and power factor is not high, touches after the fault such as bad and recovers that just often ballast can't self-starting overcurrent, under-voltage, filament breaking and connecting occurring.Therefore be necessary to develop a kind of novel electronic ballast, make it have High Power Factor, energy frequency converting and preheating, and the effect that can when abnormal failure occurring, carry out self-protection effectively and after fault is eliminated, restart automatically.
Summary of the invention
The utility model is at prior art problems; a kind of High Power Factor that has is provided; can frequency converting and preheating, and can when abnormal failure occurring, carry out self-protection effectively and the electric ballast of the Active Power Factor Correction self-shield that after fault is eliminated, restarts automatically.
In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:
Described a kind of electric ballast with Active Power Factor Correction self-shield; comprise that the chip model is circuit of power factor correction and the ballast control circuit of IR2166, have High Power Factor and low total harmonic distortion (THD) and powerful defencive function and prolong ballast useful life greatly.Under following abnormal failure condition, restart function can be protected and have to ballast automatically.
Described circuit of power factor correction is by starting resistance R
SUPPLY, capacitor C VCC2, MOSFET pipe MHS, MLS, MPFC form, be connected with VCC, HO, LO and the PPC pin of chip I R2166 respectively, be used to boost and regulate VD, produce sinusoidal current (low THD) and make electric current and AC-input voltage homophase (High Power Factor) by the break-make of controlling the MOSFET pipe;
Described ballast control circuit comprises oscillator, half-bridge drive circuit, chip I R2166 and fault secure circuit.Described oscillator is made up of resistance R T, RPH and capacitor C T, and resistance R T, RPH are in parallel to be connected to ground, to connect to form with RT, RPH, the CT pin of chip I R2166 with capacitor C T; Described half-bridge drive circuit is made up of charge pump and MOSFET pipe MHS, the MLS that capacitor C SUNB, C17, diode DCP1, DCP2 form, and described MOSFET pipe MHS, MLS are connected with HO, the LO pin of chip I R2166 respectively; Described fault secure circuit is to be connected with the CS pin of IR2166 by resistance R CS by low side MOSFET pipe source electrode, forms the network of dividing potential drop, filtering and the SD pin of chip I R2166 connects to form by resistance R PU, RSD and capacitor C SD1.
Further, described ballast also includes rectification circuit.
Further, described circuit of power factor correction is the break-make generation sinusoidal current by control MOSFET pipe, improves power factor.
Further, described ballast control circuit is to control pre-thermal oscillation frequency by the oscillator of being made up of resistance R T, RPH and capacitor C T.
Further, described ballast control circuit is to judge that by detecting voltage on the CS pin whether lamp the fault of hard switching, under-voltage, overcurrent occurs, then controls ballast as if breaking down and quits work.
Further, described ballast control circuit is to judge that by the voltage that detects on the SD pin whether lamp lamp longevity end fault occurs, then controls ballast as if breaking down and quits work.
Further, described ballast control circuit is whether to have changed fluorescent tube after breaking down by the voltage judgement on the detection SD pin, can control ballast after the replacing and restart automatically.
Further, described ballast control circuit is to judge whether to occur the under voltage fault by the voltage that detects on the VBUS pin, then controls ballast as if breaking down and quits work.
A kind of operation principle with electric ballast of Active Power Factor Correction self-shield described in the utility model is: after ballast powers on; chip I R2166Vcc pin charges by resistance capacitance; reaching under-voltage threshold rear drive oscillator and MOSFET plumber does; charge pump circuit continues to electric capacity charging and then driven MOS FET, realizes boosting and regulating direct voltage.Enter preheating mode then, control generator work, the enough current preheating filaments of control half-bridge drive circuit output under the frequency of adaptation, and give capacitor C PH charging, after reaching the triggering threshold values, charging enters trigger mode.This moment, frequency dropped to the frequency of LC load, and voltage of both ends of lamp significantly rises up to reaching trigger voltage and triggering the lamp starting, and ballast enters operational mode.In the running, chip I R2166 detects the voltage on its each pin in real time, judge whether to occur faults such as overcurrent, under-voltage, hard switching, the end of lamp longevity, when detecting fault, enter fault mode and ballast is quit work, restart ballast after fault has been eliminated up to detecting.
Advantage of the present utility model is: a kind of electric ballast with Active Power Factor Correction self-shield is provided; it is adjustable that the circuit structure of the IR2166 chip design of adopting can obtain higher power factor, pre-heat frequency and running frequency, and the overcurrent threshold voltage is adjustable.Also have fluorescent tube simultaneously and trigger the failure protection, filament failure protection, the protection of lamp longevity, and dc bus under-voltage reset and automatic restart function.
Description of drawings
Fig. 1 is a kind of system configuration block diagram with electric ballast of Active Power Factor Correction self-shield described in the utility model;
Fig. 2 is a kind of circuit theory diagrams with electric ballast of Active Power Factor Correction self-shield described in the utility model.
The division mark is as follows in the accompanying drawing: 1, rectification circuit; 2, circuit of power factor correction; 3, oscillating circuit; 4, fluorescent tube; 5, chip I R2166; 6, half-bridge drive circuit; 7, fault secure circuit; 8, ballast control circuit.
Embodiment
Shown in attached Fig. 1 and 2, a kind of block diagram with electric ballast of Active Power Factor Correction self-shield is that IR2166 is that core constitutes in conjunction with peripheral circuit with the chip model, comprises circuit of power factor correction 2 and ballast control circuit 8.Described circuit of power factor correction 2 is by starting resistance R
SUPPLY, capacitor C VCC2, MOSFET pipe MHS, MLS, MPFC form, be connected with VCC, HO, LO and the PPC pin of chip I R2166 respectively.Pass through starting resistance R through the alternating voltage after rectification circuit 1 rectification
SUPPLYBe connected with the VCC pin of IR2166, described VCC pin meets capacitor C VCC2 to ground, MOSFET pipe MHS base stage, MOSFET pipe MLS base stage, MOSFET pipe MPFC are connected with HO, LO, the PFC pin of IR2166 respectively, and MOSFET pipe MHS source electrode is connected with MOSFET pipe MLS drain electrode.Described ballast control circuit 8 comprises oscillating circuit 3, half-bridge drive circuit 6 and fault secure circuit 7.Described oscillating circuit 3 is made up of resistance R T, RPH, capacitor C T, is connected with RT, RPH, the CT pin of IR2166 respectively; Described half-bridge drive circuit 6 is made up of charge pump and MOSFET pipe MHS, the MLS that capacitor C SUNB, C17, diode DCP1, DCP2 form, described capacitor C SUNB is connected with VCC, the COM pin of IR2166 respectively, diode DCP1 negative pole is connected with the VCC pin of IR2166, positive pole is connected with negative pole and the capacitor C 17 of diode DCP2, and capacitor C 17 is connected with MOSFET pipe MHS source electrode.Described fault secure circuit 7 comprises network and the IR2166 of MOSFET pipe MLS source electrode by resistance R CS, RPU, RSD, capacitor C SD1 composition dividing potential drop, filtering; MOSFET pipe MLS source electrode is connected with resistance R CS; resistance R CS, capacitor C SD1 are connected with CS, the SD pin of IR2166; capacitor C SD1 is connected with resistance R SD, RPU, and resistance R SD, RPU are connected with the two ends of fluorescent tube 4 respectively.
Claims (3)
1. the electric ballast with Active Power Factor Correction self-shield is characterized in that, comprises circuit of power factor correction (2) and ballast control circuit (8);
Described circuit of power factor correction (2) is by starting resistance R
SUPPLY, capacitor C VCC2, MOSFET pipe MHS, MLS, MPFC form, be connected with VCC, HO, LO and the PPC pin of chip I R2166 (5) respectively;
Described ballast control circuit (8) comprises oscillating circuit (3), half-bridge drive circuit (6), chip I R2166 (5) and fault secure circuit (7); Described oscillating circuit (3) is made up of resistance R T, RPH and capacitor C T, is connected with RT, RPH, the CT pin of chip I R2166 (5) respectively; Described half-bridge drive circuit (6) is made up of charge pump and MOSFET pipe MHS, the MLS that capacitor C SUNB, C17, diode DCP1, DCP2 form, and described MOSFET pipe MHS, MLS are connected with HO, the LO pin of chip I R2166 (5) respectively.
2. the electric ballast with Active Power Factor Correction self-shield according to claim 1; it is characterized in that; described fault secure circuit (7) is to be connected with the CS pin of chip I R2166 (5) by resistance R CS by low side MOSFET pipe source electrode, forms the network of dividing potential drop, filtering and the SD pin of chip I R2166 (5) connects to form by resistance R PU, RSD and capacitor C SD1.
3. the electric ballast with Active Power Factor Correction self-shield according to claim 1 is characterized in that, also comprises rectification circuit (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206211431U CN201878407U (en) | 2010-11-24 | 2010-11-24 | Electronic ballast with active power factor correcting self-protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206211431U CN201878407U (en) | 2010-11-24 | 2010-11-24 | Electronic ballast with active power factor correcting self-protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201878407U true CN201878407U (en) | 2011-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206211431U Expired - Fee Related CN201878407U (en) | 2010-11-24 | 2010-11-24 | Electronic ballast with active power factor correcting self-protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201878407U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106374923A (en) * | 2016-08-18 | 2017-02-01 | 芯海科技（深圳）股份有限公司 | High-precision ADC reference voltage calibration system and calibration method |
-
2010
- 2010-11-24 CN CN2010206211431U patent/CN201878407U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106374923A (en) * | 2016-08-18 | 2017-02-01 | 芯海科技（深圳）股份有限公司 | High-precision ADC reference voltage calibration system and calibration method |
| CN106374923B (en) * | 2016-08-18 | 2020-03-17 | 芯海科技（深圳）股份有限公司 | High-precision ADC reference voltage calibration system and calibration method |
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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 |
Granted publication date: 20110622 Termination date: 20141124 |
|
| EXPY | Termination of patent right or utility model |