CN203261551U - Control circuit for automatic restart of drive chip of electronic ballast - Google Patents
Control circuit for automatic restart of drive chip of electronic ballast Download PDFInfo
- Publication number
- CN203261551U CN203261551U CN2013202710129U CN201320271012U CN203261551U CN 203261551 U CN203261551 U CN 203261551U CN 2013202710129 U CN2013202710129 U CN 2013202710129U CN 201320271012 U CN201320271012 U CN 201320271012U CN 203261551 U CN203261551 U CN 203261551U
- Authority
- CN
- China
- Prior art keywords
- resistance
- chip
- control circuit
- autoboot
- electric ballast
- 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 - Fee Related
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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 Arrangements For Discharge Lamps (AREA)
Abstract
The utility model discloses a control circuit for an automatic restart of a drive chip of an electronic ballast. The control circuit comprises a low-voltage end restart control unit connected with a low-voltage end of a light tube and a high-voltage end restart control unit connected with a high-voltage end of the light tube. The low-voltage end restart control unit is connected with an IC power end of the driving chip of the electronic ballast, and the high-voltage end restart control unit is connected with an enable of the driving chip of the electronic ballast. The control circuit is available for the automatic restart of any lamp cap, thereby avoiding a restart failure possibly occurring in a traditional circuit while achieving the automatic restart of products after any one of tubes of multiple tubes is replaced, and ensuring the safety of the driving chip of the electronic ballast, and is suitable for promotion and use.
Description
Technical field
The utility model relates to electric ballast, particularly a kind of control circuit that drives the chip autoboot for electric ballast.
Background technology
Electric ballast refers to adopt electronic technology to drive electric light source, makes it to produce the electronic equipment of required illumination, and is multiplex in fluorescent lamp, along with the development of illuminating industry, the requirement of electric ballast also improved constantly.
In the electric ballast use procedure, fluorescent tube occurs when unusual, and electric ballast will play a protective role.In some illumination occasions, be not suitable for disconnecting main power source and restart ballast.In this case, just require to change behind the fluorescent tube electric ballast drive chip can autoboot.
The general fluorescent tube low side of only ballast being exported of electric ballast that has at present the autoboot function carries out controlling of sampling, realizes the autoboot function.As shown in Figure 1, when taking off fluorescent tube Lamp, fluorescent tube B end disconnects with circuit, and triode S1 base voltage is set up, triode S1 conducting, thus drag down the output voltage of Vcc-IC, turn-offed the IC power supply.When connecting fluorescent tube, fluorescent tube B holds line attachment, and filament resistance is less, can be similar to 0 Europe than resistance R 1, R2, and this moment, triode S1 base voltage was 0V, and S1 turn-offs.Vcc voltage raises, and IC(is that electric ballast drives chip) service restoration, fluorescent tube restarts.
Yet phenomenon is not restarted in the easy appearance when the access fluorescent tube of this mode: during the access fluorescent tube, if B holds first place in circuit, when A held contact well or do not have line attachment, product can enter guard mode.Thereby make this replacing fluorescent tube restart disabler.Be connected in series in the mode at two lamps, also only have fluorescent tube B end to have access and restart function, and A end and another fluorescent tube all can not be realized autoboot.
In view of this, prior art is still waiting to improve and improve.
The utility model content
In view of above-mentioned the deficiencies in the prior art part, the purpose of this utility model is to provide a kind of and drives the control circuit of chip autoboot for electric ballast, is intended to solve in the prior art that electric ballast drives the problem that chip can not be realized autoboot behind the lamp tube replacement.
In order to achieve the above object, the utility model has been taked following technical scheme:
A kind of control circuit for electric ballast driving chip autoboot comprises:
Restart control unit with the low-pressure end that the fluorescent tube low-pressure end links to each other, wherein, also comprise:
Restart control unit with the high-pressure side that the fluorescent tube high-pressure side links to each other;
Described low-pressure end is restarted the IC feeder ear of control unit connecting electronic ballast driver chip, and described high-pressure side is restarted the Enable Pin of control unit connecting electronic ballast driver chip.
Described control circuit for electric ballast driving chip autoboot wherein, also comprises: one is used for preventing that electric ballast from driving the trigger element of the Enable Pin false triggering of chip; The Enable Pin of described trigger element connecting electronic ballast driver chip and electric ballast drive the low side drive end of chip.
Described control circuit for electric ballast driving chip autoboot, wherein, described high-pressure side is restarted control unit and is comprised: the 3rd resistance, the 4th resistance, the 5th resistance and the second electric capacity; One side and the external power source input of the two ends connecting tube high-pressure side of described the 3rd resistance, the opposite side of described fluorescent tube high-pressure side is successively by the 4th resistance and the 5th grounding through resistance, and the two ends of the second electric capacity connect respectively the Enable Pin of the 4th resistance and electric ballast driving chip.
Described control circuit for electric ballast driving chip autoboot wherein, also comprises one the 6th resistance, and the two ends of described the 6th resistance are Enable Pin and the ground of connecting electronic ballast driver chip respectively.
Described control circuit for electric ballast driving chip autoboot, wherein, described trigger element comprises: the first diode, the 7th resistance, the 8th resistance, the 3rd electric capacity and the second triode;
The low side drive end of the anodal connecting electronic ballast driver chip of described the first diode, negative pole are connected to the base stage of the second triode successively by the 7th resistance, the 8th resistance; The 3rd electric capacity be arranged on and the 7th resistance between; The grounded emitter of the second triode, the Enable Pin of collector electrode connecting electronic ballast driver chip.
Described control circuit for electric ballast driving chip autoboot, wherein, described the second triode is NPN type triode.
Beneficial effect:
Compared to prior art, the utility model provides is used for the control circuit that electric ballast drives the chip autoboot, is applicable to the autoboot of arbitrary lamp holder.Thereby what solved that traditional circuit may occur restarts the disabler problem, has realized simultaneously product autoboot function behind arbitrary lamp tube replacement of many fluorescent tubes, has guaranteed that electric ballast drives the fail safe of chip, is fit to promote the use of.
Description of drawings
Fig. 1 is the schematic diagram that existing electric ballast drives the re-starting control circuit of chip.
Fig. 2 is the circuit diagram of the embodiment of the control circuit that drives the chip autoboot for electric ballast of the present utility model.
Embodiment
The utility model provides a kind of control circuit that drives the chip autoboot for electric ballast, for making the purpose of this utility model, technical scheme and effect clearer, clear and definite, referring to the accompanying drawing embodiment that develops simultaneously the utility model is further described.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
The utility model provides is used for control circuit that electric ballast drives the chip autoboot and comprises that the low-pressure end that links to each other with the fluorescent tube low-pressure end restarts control unit and restart control unit with the high-pressure side that links to each other with the fluorescent tube high-pressure side, described low-pressure end is restarted the IC feeder ear VCC-IC of control unit connecting electronic ballast driver chip, and described high-pressure side is restarted the Enable Pin of control unit connecting electronic ballast driver chip.
Further, described control circuit for electric ballast driving chip autoboot comprises that also one is used for preventing that electric ballast from driving the trigger element of the Enable Pin false triggering of chip; The Enable Pin of described trigger element connecting electronic ballast driver chip and electric ballast drive the low side drive end of chip.
Please continue to consult Fig. 2, Fig. 2 is the circuit diagram of the embodiment of the control circuit that drives the chip autoboot for electric ballast of the present utility model, as shown in the figure, described high-pressure side is restarted control unit 100 and is comprised: the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5 and the second capacitor C 2; A side and the external power source input VDD of the two ends connecting tube high-pressure side A of described the 3rd resistance R 3, the opposite side of described fluorescent tube high-pressure side A is successively by the 4th resistance R 4 and the 5th resistance R 5 ground connection, and the two ends of the second capacitor C 2 connect respectively the Enable Pin En of the 4th resistance R 4 and electric ballast driving chip.
Specifically, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5 and the second capacitor C 2 have formed an easy fluorescent tube access detection line, during the access fluorescent tube, the Enable Pin En point that electric ballast drives chip can detect a pulse signal, and being used for triggering IC(is electric ballast driving chip) autoboot.The 3rd resistance R 3 is from the bus sampling of circuit, and the 3rd resistance R 3, the 4th resistance R 4 and the 5th resistance R 5 form a voltage divider, and the second capacitor C 2 is sampling capacitance, and fluorescent tube high-pressure side A equivalence is a switch of voltage divider.When changing fluorescent tube, the 3rd resistance R 3, fluorescent tube high-pressure side A, the 4th resistance R 4 and the 5th resistance R 5 form path, 2 chargings of the second capacitor C, and the Enable Pin En point that drives chip at electric ballast detects a pulse signal, is used for triggering the autoboot of IC.Described high-pressure side is restarted control unit can also comprise one the 6th resistance R 6, and the two ends of described the 6th resistance R 6 are Enable Pin En and the ground of connecting electronic ballast driver chip respectively.
In addition, it is prior art that the low-pressure end that links to each other with the fluorescent tube low-pressure end is restarted control unit, and it can referring to the related content of background technology, just no longer be done and give unnecessary details here.
Further, described trigger element comprises: the first diode D1, the 7th resistance R 7, the 8th resistance R 8, the 3rd capacitor C 3 and the second triode S2;
The low side drive end LVG of the anodal connecting electronic ballast driver chip of described the first diode D1, negative pole are connected to the base stage of the second triode S2 successively by the 7th resistance R 7, the 8th resistance R 8; The 3rd capacitor C 3 be arranged on and the 7th resistance R 7 between; The grounded emitter of the second triode S2, the Enable Pin En of collector electrode connecting electronic ballast driver chip.
Specifically, after circuit is restarted, half-bridge circuit V1, V2 starts working, the gate drive signal of lower pipe V2 drives the Enable Pin En point current potential of chip by the first diode D1, the 7th resistance R 7, the 8th resistance R 8, the 3rd capacitor C 3 and the second triode S2 locking electric ballast, the Enable Pin En point that keeps electric ballast to drive chip is electronegative potential in course of normal operation, prevents misoperation.
In the present embodiment, described the second triode S2 is NPN type triode.
In sum, the control circuit that is used for electric ballast driving chip autoboot that the utility model provides, it comprises: restart control unit with the low-pressure end that the fluorescent tube low-pressure end links to each other, and the high-pressure side that links to each other with the fluorescent tube high-pressure side is restarted control unit; Wherein said low-pressure end is restarted the IC feeder ear of control unit connecting electronic ballast driver chip, and described high-pressure side is restarted the Enable Pin of control unit connecting electronic ballast driver chip.Of the present utility modelly drive the control circuit of chip autoboot for electric ballast, be applicable to the autoboot of arbitrary lamp holder.Thereby what solved that traditional circuit may occur restarts the disabler problem, has realized simultaneously product autoboot function behind arbitrary lamp tube replacement of many fluorescent tubes, has guaranteed that electric ballast drives the fail safe of chip, is fit to promote the use of.
Be understandable that; for those of ordinary skills; can be equal to replacement or change according to the technical solution of the utility model and utility model design thereof, and all these changes or replacement all should belong to the protection range of the appended claim of the utility model.
Claims (6)
1. one kind is used for the control circuit that electric ballast drives the chip autoboot, comprising:
Restart control unit with the low-pressure end that the fluorescent tube low-pressure end links to each other, it is characterized in that, also comprise:
Restart control unit with the high-pressure side that the fluorescent tube high-pressure side links to each other;
Described low-pressure end is restarted the IC feeder ear of control unit connecting electronic ballast driver chip, and described high-pressure side is restarted the Enable Pin of control unit connecting electronic ballast driver chip.
2. the control circuit for electric ballast driving chip autoboot according to claim 1 is characterized in that, also comprises: one is used for preventing that electric ballast from driving the trigger element of the Enable Pin false triggering of chip; The Enable Pin of described trigger element connecting electronic ballast driver chip and electric ballast drive the low side drive end of chip.
3. the control circuit for electric ballast driving chip autoboot according to claim 1 is characterized in that described high-pressure side is restarted control unit and comprised: the 3rd resistance, the 4th resistance, the 5th resistance and the second electric capacity; One side and the external power source input of the two ends connecting tube high-pressure side of described the 3rd resistance, the opposite side of described fluorescent tube high-pressure side is successively by the 4th resistance and the 5th grounding through resistance, and the two ends of the second electric capacity connect respectively the Enable Pin of the 4th resistance and electric ballast driving chip.
4. the control circuit for electric ballast driving chip autoboot according to claim 3 is characterized in that, also comprises one the 6th resistance, and the two ends of described the 6th resistance are Enable Pin and the ground of connecting electronic ballast driver chip respectively.
5. the control circuit for electric ballast driving chip autoboot according to claim 2 is characterized in that described trigger element comprises: the first diode, the 7th resistance, the 8th resistance, the 3rd electric capacity and the second triode;
The low side drive end of the anodal connecting electronic ballast driver chip of described the first diode, negative pole are connected to the base stage of the second triode successively by the 7th resistance, the 8th resistance; The 3rd electric capacity be arranged on and the 7th resistance between; The grounded emitter of the second triode, the Enable Pin of collector electrode connecting electronic ballast driver chip.
6. the control circuit for electric ballast driving chip autoboot according to claim 5 is characterized in that described the second triode is NPN type triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202710129U CN203261551U (en) | 2013-05-17 | 2013-05-17 | Control circuit for automatic restart of drive chip of electronic ballast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202710129U CN203261551U (en) | 2013-05-17 | 2013-05-17 | Control circuit for automatic restart of drive chip of electronic ballast |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203261551U true CN203261551U (en) | 2013-10-30 |
Family
ID=49474081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202710129U Expired - Fee Related CN203261551U (en) | 2013-05-17 | 2013-05-17 | Control circuit for automatic restart of drive chip of electronic ballast |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203261551U (en) |
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2013
- 2013-05-17 CN CN2013202710129U patent/CN203261551U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131030 Termination date: 20210517 |