CN203352876U - Driver circuit of energy saving lamp - Google Patents
Driver circuit of energy saving lamp Download PDFInfo
- Publication number
- CN203352876U CN203352876U CN 201320344047 CN201320344047U CN203352876U CN 203352876 U CN203352876 U CN 203352876U CN 201320344047 CN201320344047 CN 201320344047 CN 201320344047 U CN201320344047 U CN 201320344047U CN 203352876 U CN203352876 U CN 203352876U
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- Prior art keywords
- saving lamp
- chip
- control module
- drive control
- pin
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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
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model discloses a driver circuit of an energy saving lamp, and belongs to the lighting technology field. The driver circuit comprises a drive control module and a rectifier/filter module and the like, wherein an AC power is rectified and filtered by the rectifier/filter module and then supplies the drive control module with power; and the drive control module comprises a driver chip, and resistors, capacitors and diodes which are connected with pins of the driver chip, an output terminal of the drive control module is connected with the energy saving lamp, and the energy saving lamp is supplied with a stable voltage. The whole driver circuit is controlled by the driver chip, and the driver circuit is advantaged by few components, good line stabilization and high output efficiency and the like.
Description
Technical field
The utility model relates to a kind of driving circuit of energy-saving lamp, belongs to lighting technical field.
Background technology
Electricity-saving lamp is a kind of illuminating ordinary appliances, is widely used in household, enterprise, communal facility etc.The defects such as form because traditional circuit adopts the discrete components and parts mostly, exist line component more, delivery efficiency is low, and track stability, consistency are poor.
The utility model content
The purpose of this utility model is to provide the driving circuit of energy-saving lamp that a kind of component number is few, track stability good, delivery efficiency is high.
To achieve these goals, solution of the present utility model is:
Driving circuit of energy-saving lamp, comprise drive control module, rectification filtering module etc., AC power is by after the rectification filtering module rectifying and wave-filtering, for the drive control module power supply, drive control module comprises resistance, electric capacity and the diode etc. that drive chip and be connected with its each pin, the output of drive control module is connected with electricity-saving lamp, for electricity-saving lamp provides stable voltage.
Above-mentioned rectification filtering module comprises rectifier bridge stack, and the filter circuit be comprised of filter inductance and electrochemical capacitor, and AC power is direct current by the rectifier bridge stack rectification, then by filter inductance and electrochemical capacitor, carries out filtering, for driving chip power supply.
The electricity-saving lamp chip that above-mentioned driving chip selection model is UBA2211XT/UBA2024/UBA2213.
The concussion resistance that the resistance of above-mentioned drive control module comprises and drives chip RC pin to be connected, and the sample resistance be connected with driving chip SENSE pin.
The electric capacity of above-mentioned drive control module comprises and the concussion electric capacity that drives chip RC pin to be connected, be connected on the filter capacitor of concussion resistance and earth terminal, be connected on the bootstrap capacitor and the sampling capacitor that drive chip FS pin, and control capacitance warm-up time be connected with driving chip SW pin.
The diode of above-mentioned drive control module comprises the diode be connected between vdd voltage end and sampling capacitor, and is connected to the voltage-stabiliser tube between earth terminal and sampling capacitor.
Drive the output of chip to be connected with electricity-saving lamp by resonant inductance.
The input of circuit initial end AC power, pass through rectification filtering module, the AC electric current is converted into to the DC electric current, the DC electric current is through electrochemical capacitor, after filter inductance filtering, input drives chip HV pin, electric current is by the inner chip power pin powered of giving of core driving chip, make and drive chip to trigger and start normal operation, after driving the chip normal operation, by OUT pin output high_frequency sine wave, electric current forms resonance through resonant inductance and resonant capacitance, resonance potential punctures filament and by lamp tube starting, electric current is got back to line input by fluorescent tube and is formed loop, the work thereby whole circuit goes round and begins again, realize illumination.
The utility model adopts and drives chip to open the control driving circuit of energy-saving lamp, compared with prior art, has following advantage:
1, drive the degree of integration of chip higher, the components and parts that periphery need to be built are less, and volume is also less, is different from discrete component in the past, and the components and parts of chip periphery all can adopt the encapsulation of SMD(paster), both facilitated to produce and also reduced space;
2, drive chip to carry out the RMS Current Control to drive circuit, by adjustment, drive the height of chip internal operating frequency to guarantee that line current is stable, continue output;
3, drive chip that the over-temperature protection function is provided, when drive circuit, because circuit causes excess Temperature extremely, thereby drive chip automatically to enter protected mode and turn-off chip, stop output.
The accompanying drawing explanation
Fig. 1 is the block diagram of the driving circuit of energy-saving lamp of the present embodiment;
Fig. 2 is the schematic diagram of the driving circuit of energy-saving lamp of the present embodiment.
Embodiment
As shown in Figure 1, driving circuit of energy-saving lamp, comprise rectification filtering module 1, drive control module 2 etc., AC power is by after rectification filtering module 1 rectifying and wave-filtering, for drive control module 2 power supplies, drive control module 2 comprises resistance, electric capacity and the diode etc. that drive chip U1 and be connected with its each pin, the output of drive control module 2, be that the OUT pin is connected with electricity-saving lamp 3, for electricity-saving lamp 3 provides stable voltage.
As shown in Figure 2, above-mentioned rectification filtering module 2 comprises rectifier bridge stack DB1, and the filter circuit be comprised of filter inductance L1 and electrochemical capacitor C1, and AC power is direct current by rectifier bridge stack DB1 rectification, then carry out filtering by filter inductance L1 and electrochemical capacitor C1, for driving chip U1 power supply.
In the present embodiment, above-mentioned driving chip U1 selects the electricity-saving lamp chip that model is UBA2211XT.The resistance of above-mentioned drive control module 2 comprises the concussion resistance R 1 be connected with the RC pin that drives chip U1, and the sample resistance R2 be connected with the SENSE pin that drives chip U1.
The electric capacity of above-mentioned drive control module 2 comprises the concussion capacitor C 3 be connected with the RC pin that drives chip U1, be connected on the filter capacitor C2 of concussion resistance R 1 and earth terminal SGND, be connected on bootstrap capacitor C7 and the sampling capacitor C8 of the FS pin that drives chip U1, and control capacitance C9 warm-up time be connected with the SW pin that drives chip U1.
The diode of above-mentioned drive control module 2 comprises the diode D5 be connected between vdd voltage end and sampling capacitor C8, and is connected to the voltage-stabiliser tube D6 between earth terminal PGND and sampling capacitor C8.
Drive the OUT pin of chip UI to be connected with electricity-saving lamp 3 by resonant inductance L2.
The input of circuit initial end AC power, by rectifier bridge stack DB1, the AC electric current is converted into to the DC electric current, the DC electric current is through electrochemical capacitor C1, after filter inductance L1 filtering, input drives the HV pin of chip U1, electric current is by driving chip U1 inner to the chip power pin powered, make and drive chip U1 to trigger and start normal operation, after driving chip U1 normal operation, by OUT pin output high_frequency sine wave, electric current forms resonance through resonant inductance L2 and resonance capacitor C 6, resonance potential punctures filament and by lamp tube starting, electric current is got back to line input by fluorescent tube and is formed loop, the work thereby whole circuit goes round and begins again, realize illumination.
Above-mentioned driving chip U1 mode of operation:
1. powering mode: when the VDD pin that drives chip U1 powers on, press liter, drive chip U1, by inner current source, filter capacitor C2 is started to charging, voltage on filter capacitor C2 has reached the starting resistor that drives chip U1, and the current source of chip internal (for starting) is closed automatically.Drive the inner integrated two MOSFET of chip U1 to start to carry out conducting in turn, carry out switch output energy, sampling capacitor C8 is from driving the output sampling alternating current of chip U1, be converted into direct current by the semi-bridge rectifier module formed by diode D5 and voltage-stabiliser tube D6, continue to driving chip U1 power supply.
2. the startup stage of driving chip U1: when driving chip U1 supply pin VDD powers on, pressure holding is continuous rises, the startup stage of driving chip U1 to enter into, the startup stage drive two MOSFET(of chip U1 inside to be called upper and lower half-bridge MOSFET) conducting in turn, at first be that lower half-bridge MOSFET conducting is arranged, now go up half-bridge MOSFET and close.Bootstrap capacitor C7 is charged simultaneously.Drive chip U1 starting resistor when the upper voltage of pin VDD surpasses, drive chip U1 to enter preheating mode.
3. vibration is controlled: frequency of oscillation is controlled and is based on the 555 timer modules that drive chip U1 inner integrated.Concussion resistance R 1 and concussion capacitor C 3 are depended in the generation of self-oscillation electric current, and drive the difference engine of chip U1 inside to be used for controlling duty ratio, half that is frequency of oscillation by the set of frequency of half-bridge.
4. preheat mode: the voltage on filter capacitor C2 surpasses starting resistor, and overheat protector is not triggered simultaneously, drive the current source of chip U1 inside start to warm-up time control capacitance C9 charged.Drive the preheating operation transconductance amplifier of chip U1 inside to start working, the half-bridge starting oscillation.U1 monitors preheat curent by detecting the upper electric current passed through of sample resistance R2.The time length of preheating has the size of control capacitance C9 appearance value warm-up time to determine, the voltage on warm-up time control capacitance C9 equals VSW (ph), and warm-up phase finishes.
5. light a fire and the stabilization sub stage: warm-up phase enters the triggering stage after finishing, when the voltage on warm-up time control capacitance C9 reaches 0.6*VH (RC), ignition phase finishes, and electricity-saving lamp 3 is lit and enters stationary operational phase, and now electricity-saving lamp 3 is normally luminous, drive chip U1 output energy, electric current flows back to circuit itself through electricity-saving lamp 3 filaments, fluorescent tube, forms a circuit cycle, also gives simultaneously and drives chip U1 continued power, guarantee to drive chip U1 normal operation, maintain energy output.
Claims (7)
1. driving circuit of energy-saving lamp, it is characterized in that: comprise drive control module, rectification filtering module, AC power is by after the rectification filtering module rectifying and wave-filtering, for the drive control module power supply, drive control module comprises resistance, electric capacity and the diode that drives chip and be connected with its each pin, the output of drive control module is connected with electricity-saving lamp, for electricity-saving lamp provides stable voltage.
2. driving circuit of energy-saving lamp as claimed in claim 1, it is characterized in that: above-mentioned rectification filtering module comprises rectifier bridge stack, and the filter circuit formed by filter inductance and electrochemical capacitor, AC power is direct current by the rectifier bridge stack rectification, then carry out filtering by filter inductance and electrochemical capacitor, for driving chip power supply.
3. driving circuit of energy-saving lamp as claimed in claim 1, is characterized in that: the electricity-saving lamp chip that above-mentioned driving chip selection model is UBA2211XT/UBA2024/UBA2213.
4. driving circuit of energy-saving lamp as claimed in claim 1, is characterized in that: the concussion resistance that the resistance of above-mentioned drive control module comprises and drives chip RC pin to be connected, and the sample resistance be connected with driving chip SENSE pin.
5. driving circuit of energy-saving lamp as claimed in claim 1, it is characterized in that: the electric capacity of above-mentioned drive control module comprises and the concussion electric capacity that drives chip RC pin to be connected, be connected on the filter capacitor of concussion resistance and earth terminal, be connected on the bootstrap capacitor and the sampling capacitor that drive chip FS pin, and control capacitance warm-up time be connected with driving chip SW pin.
6. driving circuit of energy-saving lamp as claimed in claim 1, it is characterized in that: the diode of above-mentioned drive control module comprises the diode be connected between vdd voltage end and sampling capacitor, and is connected to the voltage-stabiliser tube between earth terminal and sampling capacitor.
7. driving circuit of energy-saving lamp as claimed in claim 1, is characterized in that: drive the output of chip to be connected with electricity-saving lamp by resonant inductance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320344047 CN203352876U (en) | 2013-06-17 | 2013-06-17 | Driver circuit of energy saving lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320344047 CN203352876U (en) | 2013-06-17 | 2013-06-17 | Driver circuit of energy saving lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203352876U true CN203352876U (en) | 2013-12-18 |
Family
ID=49752719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320344047 Expired - Fee Related CN203352876U (en) | 2013-06-17 | 2013-06-17 | Driver circuit of energy saving lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203352876U (en) |
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2013
- 2013-06-17 CN CN 201320344047 patent/CN203352876U/en not_active Expired - Fee Related
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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: 20131218 Termination date: 20190617 |
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| CF01 | Termination of patent right due to non-payment of annual fee |