CN106102239A - A kind of LED energy-saving driving system based on power amplification circuit - Google Patents
A kind of LED energy-saving driving system based on power amplification circuit Download PDFInfo
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- CN106102239A CN106102239A CN201610525366.XA CN201610525366A CN106102239A CN 106102239 A CN106102239 A CN 106102239A CN 201610525366 A CN201610525366 A CN 201610525366A CN 106102239 A CN106102239 A CN 106102239A
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- pole
- audion
- electric capacity
- control chip
- circuit
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- 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
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- 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]
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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
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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Abstract
The invention discloses a kind of LED energy-saving driving system based on power amplification circuit, it is characterized in that: main by control chip U2, transformator T, the power circuit being connected with control chip U2 respectively and frequency adjustment circuit, the diode D4 that P pole is connected with frequency adjustment circuit, N pole is connected with the VS pin of control chip U2 etc. forms.The present invention uses the integrated chip of GR6953 as control chip and to combine peripheral circuit, makes the present invention form a half-bridge control structure, thus reduces the startup power consumption of the present invention, makes the present invention more energy-conservation.The present invention can export high-power, thus meets the demand that multiple LED works simultaneously.
Description
Technical field
The present invention relates to a kind of drive system, specifically refer to a kind of LED energy-saving driving system based on power amplification circuit.
Background technology
At present, due to LED have that energy consumption is low, the feature such as length in service life and safety and environmental protection, had become as people
One of main product of life lighting.Along with improving constantly of people's awareness of saving energy, people's horsepower requirements to LED drive system
More and more higher, this brings new challenge to LED drive system.But, traditional LED drive system power consumption on startup
The biggest, it is impossible to meet the energy saving requirement of people.
Summary of the invention
It is an object of the invention to solve the defect that current LED drive system power consumption on startup is bigger, it is provided that one
Plant LED energy-saving driving system based on power amplification circuit.
The purpose of the present invention is by following technical proposals reality: a kind of energy-conservation drivetrain of LED based on power amplification circuit
System, mainly by control chip U2, transformator T, the power circuit being connected with control chip U2 respectively and frequency adjustment circuit, P
The diode D4 that pole is connected with frequency adjustment circuit, N pole is connected with the VS pin of control chip U2, positive pole and control chip
The PGND pipe of the electric capacity C3 that SGND pin is connected, negative pole is connected with frequency adjustment circuit of U2, one end and control chip U2
The resistance R3 of ground connection while foot is connected, the other end is connected with frequency adjustment circuit, with the VS pin phase of control chip U2
The gate driver circuit connected, is serially connected between the non-same polarity of secondary inductance coil of gate driver circuit and transformator T
Power amplification circuit, and positive pole is connected with the Same Name of Ends of the former limit inductance coil of transformator T, negative pole is former with transformator T's
The non-same polarity of limit inductance coil be connected while ground connection electric capacity C6 composition；The former limit inductance coil of described transformator T
Same Name of Ends be connected with power circuit；Described frequency adjustment circuit is connected with power circuit.
Further, described power amplification circuit is by the colelctor electrode of amplifier P, audion VT4, negative pole and audion VT4
Be connected, positive pole as the electric capacity C8 of the input of this power amplification circuit, minus earth, positive pole after resistance R7 with audion
Electric capacity C9, the P pole that the base stage of VT4 is connected is connected with the colelctor electrode of audion VT4, N pole is connected with the positive pole of amplifier P
Diode D6, P pole be connected with the negative pole of amplifier P, the diode D7 of N pole ground connection, the base stage phase of positive pole and audion VT4
Electric capacity C7, the resistance R8 being in parallel with electric capacity C7 that connection, negative pole are connected with the emitter stage of audion VT4, is serially connected in amplification
Resistance R9 between outfan and the N pole of diode D7 of device P, and positive pole is connected with the outfan of amplifier P, negative pole is made
Electric capacity C10 composition for the outfan of this power amplification circuit；The colelctor electrode of described audion VT4 is connected with the positive pole of electric capacity C9
Connect, its emitter stage is connected with the N pole of diode D7；The input of described power amplification circuit is connected with gate driver circuit
Connect, its outfan then non-same polarity with the secondary inductance coil of transformator T is connected.
Described power circuit is exported with the positive pole of diode rectifier U1 by diode rectifier U1, audion VT2, positive pole
End is connected, electric capacity C1 that negative pole is connected with the cathode output end of diode rectifier U1, be serially connected in the positive pole of electric capacity C1 with
Resistance R1, P pole between the colelctor electrode of audion VT2 is connected with the base stage of audion VT2, N pole after resistance R4 with electric capacity
The Zener diode D3 that the positive pole of C1 is connected, is serially connected in the resistance between the positive pole of electric capacity C1 and the HV pin of control chip U2
R5, and the electric capacity C4 composition that positive pole is connected with the positive pole of electric capacity C1, negative pole is connected with the VB pin of control chip U2；Institute
State the grounded emitter of audion VT2, its base stage is connected with the VCC pin of control chip U2；The positive pole of described electric capacity C1 is also
It is connected with the Same Name of Ends of the former limit inductance coil of transformator T；The cathode output end of described diode rectifier U1 is adjusted with frequency
Economize on electricity road is connected.
Described frequency adjustment circuit is by audion VT1, field effect transistor MOS1, and N pole is connected with the P pole of diode D4, P pole
The diode D1 being connected with the base stage of audion VT1, is serially connected in the emitter stage of audion VT1 and the source electrode of field effect transistor MOS1
Between two poles that resistance R2, P pole is connected with the colelctor electrode of audion VT1, N pole is connected with the RT pin of control chip U2
Pipe D2, and the electric capacity that positive pole is connected with the drain electrode of field effect transistor MOS1, negative pole is connected with the CT pin of control chip U2
C2 forms；The source electrode of described field effect transistor MOS1 is connected with the negative pole of electric capacity C1, its grid then with the colelctor electrode of audion VT1
It is connected；The described negative pole of electric capacity C3 is connected with the source electrode of field effect transistor MOS1；The source electrode of described field effect transistor MOS1 and change
The Same Name of Ends of the secondary inductance coil of depressor T is collectively forming outfan.
Described gate driver circuit is connected with the VS pin of control chip U2 by field effect transistor MOS2, audion VT3, P pole
Connect, diode D5 that N pole is connected with the grid of field effect transistor MOS2, be serially connected in source electrode and the audion of field effect transistor MOS2
Resistance R6 between the colelctor electrode of VT3, negative pole is connected with the emitter stage of audion VT3, positive pole is defeated with power amplification circuit
Enter the electric capacity C5 composition that end is connected；The drain electrode of described field effect transistor MOS2 is connected with the positive pole of electric capacity C5；Described audion
The base stage of VT3 is connected with the source electrode of field effect transistor MOS2, its grounded collector.
Described control chip U2 is the integrated chip of GR6953.
The present invention compared with prior art has the following advantages and beneficial effect:
(1) present invention uses the integrated chip of GR6953 as control chip and to combine peripheral circuit, makes the startup of the present invention
Electric current is less, thus reduces the startup power consumption of the present invention, makes the present invention more energy-conservation.
(2) present invention can export high-power, thus meets the demand that multiple LED works simultaneously.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the present invention.
Fig. 2 is the structure chart of the power amplification circuit of the present invention.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to
This.
Embodiment
As it is shown in figure 1, the present invention is mainly by control chip U2, transformator T, the power supply being connected with control chip U2 respectively
Circuit and frequency adjustment circuit, P pole is connected with frequency adjustment circuit, N pole is connected with the VS pin of control chip U2 two
Pole pipe D4, the electric capacity C3 that SGND pin is connected, negative pole is connected with frequency adjustment circuit of positive pole and control chip U2, one end
Be connected with the PGND pin of control chip U2, the other end be connected with frequency adjustment circuit while the resistance R3 of ground connection, with
The gate driver circuit that the VS pin of control chip U2 is connected, is serially connected in gate driver circuit and the secondary inductance of transformator T
Power amplification circuit between the non-same polarity of coil, and positive pole is connected with the Same Name of Ends of the former limit inductance coil of transformator T
Connect, negative pole be connected with the non-same polarity of the former limit inductance coil of transformator T while ground connection electric capacity C6 composition.Described change
The Same Name of Ends of the former limit inductance coil of depressor T is connected with power circuit；Described frequency adjustment circuit is connected with power circuit.
In order to reach the purpose of the present invention, the described control chip U2 integrated chip of preferred GR6953 realizes.
Wherein, described power circuit is by diode rectifier U1, audion VT2, resistance R1, resistance R4, resistance R5, electric capacity
C1, Zener diode D3 and electric capacity C4 form.
During connection, the positive pole of electric capacity C1 is connected with the cathode output end of diode rectifier U1, its negative pole and diode
The cathode output end of commutator U1 is connected.Resistance R1 is serially connected between the positive pole of electric capacity C1 and the colelctor electrode of audion VT2.Surely
The P pole of pressure diode D3 is connected with the base stage of audion VT2, its N pole positive pole with electric capacity C1 after resistance R4 is connected.Electricity
Resistance R5 is serially connected between the positive pole of electric capacity C1 and the HV pin of control chip U2.The positive pole of electric capacity C4 is connected with the positive pole of electric capacity C1
Connect, its negative pole is connected with the VB pin of control chip U2.
Meanwhile, the grounded emitter of described audion VT2, its base stage are connected with the VCC pin of control chip U2.Described
The positive pole of electric capacity C1 also Same Name of Ends with the former limit inductance coil of transformator T is connected.The negative pole of described diode rectifier U1
Outfan is connected with frequency adjustment circuit.The input termination power of described diode rectifier U1.
Described frequency adjustment circuit by audion VT1, field effect transistor MOS1, resistance R2, diode D1, diode D2 and
Electric capacity C2 forms.
During connection, the N pole of diode D1 is connected with the P pole of diode D4, its P pole is connected with the base stage of audion VT1
Connect.Resistance R2 is serially connected between emitter stage and the source electrode of field effect transistor MOS1 of audion VT1.The P pole of diode D2 and three poles
The colelctor electrode of pipe VT1 is connected, its N pole is connected with the RT pin of control chip U2.The positive pole of electric capacity C2 and field effect transistor
The drain electrode of MOS1 is connected, its negative pole is connected with the CT pin of control chip U2.
The source electrode of this field effect transistor MOS1 is connected with the negative pole of electric capacity C1, its grid then with the colelctor electrode of audion VT1
It is connected.The described negative pole of electric capacity C3 is connected with the source electrode of field effect transistor MOS1.The source electrode of described field effect transistor MOS1 and change
The Same Name of Ends of the secondary inductance coil of depressor T is collectively forming outfan and connects LED lamp.
It addition, described gate driver circuit is by field effect transistor MOS2, audion VT3, diode D5, resistance R6 and electric capacity
C5 forms.
During connection, the P pole of diode D5 is connected with the VS pin of control chip U2, its N pole and field effect transistor MOS2
Grid is connected.Resistance R6 is serially connected between the source electrode of field effect transistor MOS2 and the colelctor electrode of audion VT3.The negative pole of electric capacity C5
Be connected with the emitter stage of audion VT3, its positive pole is connected with the input of power amplification circuit.Described field effect transistor MOS2
Drain electrode be connected with the positive pole of electric capacity C5.The described base stage of audion VT3 is connected with the source electrode of field effect transistor MOS2, its collection
Electrode ground connection.
As in figure 2 it is shown, described power amplification circuit is by amplifier P, audion VT4, resistance R7, resistance R8, resistance R9, electricity
Hold C7, electric capacity C8, electric capacity C9, electric capacity C10, diode D6 and diode D7 composition.
During connection, the negative pole of electric capacity C8 is connected with the colelctor electrode of audion VT4, its positive pole is as this power amplification circuit
Input and be connected with the positive pole of electric capacity C5.The minus earth of electric capacity C9, its positive pole after resistance R7 with audion VT4's
Base stage is connected.The P pole of diode D6 is connected with the colelctor electrode of audion VT4, its N pole is connected with the positive pole of amplifier P.
The P pole of diode D7 is connected with the negative pole of amplifier P, its N pole ground connection.The base stage phase of the positive pole of electric capacity C7 and audion VT4
Connect, its negative pole is connected with the emitter stage of audion VT4.Resistance R8 is in parallel with electric capacity C7.Resistance R9 is serially connected in amplifier P
Outfan and the N pole of diode D7 between.The positive pole of electric capacity C10 is connected with the outfan of amplifier P, its negative pole is as this
The outfan of power amplification circuit is also connected with the non-same polarity of the secondary inductance coil of transformator T.Described audion VT4's
Colelctor electrode is connected with the positive pole of electric capacity C9, its emitter stage is connected with the N pole of diode D7.
The present invention uses the integrated chip of GR6953 as control chip and to combine peripheral circuit, makes the present invention form one and half
Bridge control structure, thus reduce the startup power consumption of the present invention, make the present invention more energy-conservation.The present invention can export high-power,
Thus meet the demand that multiple LED works simultaneously.
As it has been described above, just can well realize the present invention.
Claims (6)
1. a LED energy-saving driving system based on power amplification circuit, it is characterised in that: main by control chip U2, transformation
Device T, the power circuit being connected with control chip U2 respectively and frequency adjustment circuit, P pole is connected with frequency adjustment circuit, N
The diode D4 that pole is connected with the VS pin of control chip U2, positive pole is connected with the SGND pin of control chip U2, negative pole
The electric capacity C3 being connected with frequency adjustment circuit, one end is connected with the PGND pin of control chip U2, the other end is adjusted with frequency
Economize on electricity road be connected while the resistance R3 of ground connection, the gate driver circuit being connected with the VS pin of control chip U2, concatenation
Power amplification circuit between the non-same polarity of the secondary inductance coil of gate driver circuit and transformator T, and positive pole with
The Same Name of Ends of the former limit inductance coil of transformator T is connected, negative pole is connected with the non-same polarity of the former limit inductance coil of transformator T
The electric capacity C6 composition of ground connection while connecing；The Same Name of Ends of the former limit inductance coil of described transformator T is connected with power circuit；
Described frequency adjustment circuit is connected with power circuit.
A kind of LED energy-saving driving system based on power amplification circuit the most according to claim 1, it is characterised in that: institute
Stating power amplification circuit by amplifier P, audion VT4, negative pole is connected with the colelctor electrode of audion VT4, positive pole is as this merit
The electric capacity C8 of the input of rate amplifying circuit, the electricity that minus earth, positive pole base stage with audion VT4 after resistance R7 is connected
Hold C9, P pole is connected with the colelctor electrode of audion VT4, N pole is connected with the positive pole of amplifier P diode D6, P pole and put
The negative pole of big device P is connected, the diode D7 of N pole ground connection, and positive pole is connected with the base stage of audion VT4, negative pole and audion
The electric capacity C7 that the emitter stage of VT4 is connected, the resistance R8 being in parallel with electric capacity C7, be serially connected in outfan and two poles of amplifier P
Resistance R9 between the N pole of pipe D7, and positive pole is connected with the outfan of amplifier P, negative pole is as this power amplification circuit
Outfan electric capacity C10 composition；The colelctor electrode of described audion VT4 is connected with the positive pole of electric capacity C9, its emitter stage and two
The N pole of pole pipe D7 is connected；The input of described power amplification circuit is connected with gate driver circuit, its outfan then with change
The non-same polarity of the secondary inductance coil of depressor T is connected.
A kind of LED energy-saving driving system based on power amplification circuit the most according to claim 2, it is characterised in that: institute
State power circuit by diode rectifier U1, audion VT2, positive pole is connected with the cathode output end of diode rectifier U1,
The electric capacity C1 that negative pole is connected with the cathode output end of diode rectifier U1, is serially connected in positive pole and the audion VT2 of electric capacity C1
Colelctor electrode between resistance R1, P pole be connected with the base stage of audion VT2, N pole after resistance R4 with the positive pole phase of electric capacity C1
The Zener diode D3, the resistance R5, Yi Jizheng being serially connected between the positive pole of electric capacity C1 and the HV pin of control chip U2 connected
The electric capacity C4 composition that pole is connected with the positive pole of electric capacity C1, negative pole is connected with the VB pin of control chip U2；Described audion
The grounded emitter of VT2, its base stage are connected with the VCC pin of control chip U2；The positive pole of described electric capacity C1 also with transformator T
The Same Name of Ends of former limit inductance coil be connected；The cathode output end of described diode rectifier U1 is connected with frequency adjustment circuit
Connect.
A kind of LED energy-saving driving system based on power amplification circuit the most according to claim 3, it is characterised in that: institute
Stating frequency adjustment circuit by audion VT1, field effect transistor MOS1, N pole is connected with the P pole of diode D4, P pole and audion
The diode D1 that the base stage of VT1 is connected, is serially connected in the electricity between emitter stage and the source electrode of field effect transistor MOS1 of audion VT1
The resistance diode D2 that R2, P pole is connected with the colelctor electrode of audion VT1, N pole is connected with the RT pin of control chip U2, with
And the electric capacity C2 composition that positive pole is connected with the drain electrode of field effect transistor MOS1, negative pole is connected with the CT pin of control chip U2；
The source electrode of described field effect transistor MOS1 is connected with the negative pole of electric capacity C1, its grid then colelctor electrode with audion VT1 is connected；
The described negative pole of electric capacity C3 is connected with the source electrode of field effect transistor MOS1；The source electrode of described field effect transistor MOS1 and transformator T's
The Same Name of Ends of secondary inductance coil is collectively forming outfan.
A kind of LED energy-saving driving system based on power amplification circuit the most according to claim 4, it is characterised in that: institute
Stating gate driver circuit by field effect transistor MOS2, audion VT3, P pole is connected with the VS pin of control chip U2, N pole and field
The diode D5 that the grid of effect pipe MOS2 is connected, is serially connected in source electrode and the colelctor electrode of audion VT3 of field effect transistor MOS2
Between resistance R6, negative pole is connected with the emitter stage of audion VT3, positive pole is connected with the input of power amplification circuit
Electric capacity C5 forms；The drain electrode of described field effect transistor MOS2 is connected with the positive pole of electric capacity C5；The base stage of described audion VT3 and field
The source electrode of effect pipe MOS2 is connected, its grounded collector.
A kind of LED energy-saving driving system based on power amplification circuit the most according to claim 5, it is characterised in that: institute
Stating control chip U2 is the integrated chip of GR6953.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610525366.XA CN106102239A (en) | 2016-07-05 | 2016-07-05 | A kind of LED energy-saving driving system based on power amplification circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610525366.XA CN106102239A (en) | 2016-07-05 | 2016-07-05 | A kind of LED energy-saving driving system based on power amplification circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106102239A true CN106102239A (en) | 2016-11-09 |
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ID=57213238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610525366.XA Pending CN106102239A (en) | 2016-07-05 | 2016-07-05 | A kind of LED energy-saving driving system based on power amplification circuit |
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| Country | Link |
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| CN (1) | CN106102239A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112135390A (en) * | 2020-11-24 | 2020-12-25 | 上海芯龙半导体技术股份有限公司南京分公司 | Dimming circuit and power supply chip |
-
2016
- 2016-07-05 CN CN201610525366.XA patent/CN106102239A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112135390A (en) * | 2020-11-24 | 2020-12-25 | 上海芯龙半导体技术股份有限公司南京分公司 | Dimming circuit and power supply chip |
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Application publication date: 20161109 |