CN203872402U - Circuit structure of multi-gear light-adjustable LED driving power supply - Google Patents
Circuit structure of multi-gear light-adjustable LED driving power supply Download PDFInfo
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- CN203872402U CN203872402U CN201420261912.XU CN201420261912U CN203872402U CN 203872402 U CN203872402 U CN 203872402U CN 201420261912 U CN201420261912 U CN 201420261912U CN 203872402 U CN203872402 U CN 203872402U
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- 239000004065 semiconductor Substances 0.000 claims description 36
- 238000011084 recovery Methods 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 5
- 230000000087 stabilizing effect Effects 0.000 claims description 5
- 239000003990 capacitor Substances 0.000 claims description 4
- 238000005286 illumination Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 1
- 238000000205 computational method Methods 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
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Abstract
A circuit structure of a multi-gear light-adjustable LED driving power supply includes a main drive circuit and an MCU control circuit; the main drive circuit outputs a voltage signal, is connected with a positive electrode and a negative electrode of an LED lamp, and outputs a current to supply power to the LED lamp; and the MCU control circuit receives the voltage signal from the main drive circuit, and switches to an RS1 current-adjusting circuit (8), an RS2 current-adjusting circuit (9) or an RS3 current-adjusting circuit (10) according to the voltage signal to adjust the magnitude of the current supplied to the LED lamp, thereby controlling the brightness. After adopting the abovementioned technical scheme, the circuit structure of the multi-gear light-adjustable LED driving power supply can adjust the illuminating brightness of the LED lamp by switching off and then quickly switching on a switch, and the operation is easy and convenient.
Description
Technical field
The utility model belongs to LED illumination Driving technique field, is a kind of circuit structure of many grades of Dimmable LED driving powers specifically.
Background technology
Along with scientific and technological progress, the light efficiency of LED is higher, and cost is lower, and pollution-free, meets the theme of national energy-saving environmental protection, is more and more subject to people's favor.And, due to growth in the living standard, people are no longer single light illumination modes to the demand of lighting, and LED bulb lamp, Down lamp are all generally to adopt monochromatic form at present, along with hommization and the sophistication of house fitting-up, and the raising of modern people to quality of the life, to room lighting even commercial lighting no longer meet the demand of single brightness, thereby pursue can be whenever and wherever possible and simple operations just can regulate the brightness of LED light fixture.
The generation of chip technology makes the control of Circuits System convenient, utilize computer language programme and be burned onto in chip, carrying out different orders has become very ripe technology, and is widely used in the electrical equipment control in electronic circuit and other field.Can realize by switching different circuit for the brightness of LED lamp and the adjusting of colour temperature, those skilled in the art utilize prior art to carry out, in simple language programming burning/recording chip, can realizing the switching to different circuit.The situation of reality is that computer language procedure is easily worked out, and hardware system often can not meet the demands.
Summary of the invention
For overcoming the above problems, the utility model provides a kind of circuit structure of many grades of Dimmable LED driving powers.
The utility model is achieved through the following technical solutions:
A circuit structure for many grades of Dimmable LED driving powers, comprising:
Main drive circuit, output voltage signal, positive pole and the negative pole of connection LED lamp, and output current, be the power supply of LED lamp;
MCU control circuit, receives the voltage signal of autonomous drive circuit, and can be switched to R according to voltage signal
s1adjust current circuit (8), R
s2adjust current circuit (9) or R
s3adjust current circuit (10);
Thereby, can be by switching R
s1adjust current circuit (8), R
s2adjust current circuit (9) and R
s3adjust current circuit (10), regulate the size of current of supplying with LED lamp, and then control its brightness.
Described main drive circuit comprises:
Current rectifying and wave filtering circuit (2), comprises rectifier bridge stack (B1) and electrochemical capacitor (CE1);
IC power supply circuits (3), comprise resistance (R9), resistance (R10) and electric capacity (C2), three's series connection;
The former limit of IC feedback circuit (4), comprises chip (U1) and transformer (T1);
Output rectifier and filter (5), comprise fast recovery diode (D2), electric capacity (C3) and resistance (R11), electric capacity (C3) and resistance (R11) parallel connection, fast recovery diode (D2) is connected between the cathode output end and electric capacity (C3) and parallel circuits one end of resistance (R11) composition of transformer (T1), output V+; The cathode output end of transformer (T1) connects the other end of the parallel circuits of electric capacity (C3) and resistance (R11) composition, output V-.
Further, described chip (U1) model is BP3122, the typical application circuit of main drive circuit based on BP3122.
MCU control circuit comprises:
For MCU control circuit provides the power supply circuits (7) of electric energy, comprise resistance (R2), voltage stabilizing didoe (VD1) and diode (D1);
Time control circuit (6), comprises electric capacity (C1) and resistance (R1), the two parallel connection;
R
s1adjust current circuit (8), comprise resistance (R
s1), metal-oxide-semiconductor (Q1) and resistance (R6), the G utmost point of resistance (R6) one end contact resistance (R5) and metal-oxide-semiconductor (Q1), the other end connects the S utmost point the ground connection of metal-oxide-semiconductor (Q1); The D end of metal-oxide-semiconductor (Q1) is by resistance (R
s1) connect main drive circuit;
R
s2adjust current circuit (9), comprise resistance (R
s2), metal-oxide-semiconductor (Q2) and resistance (R7), the G utmost point of resistance (R7) one end contact resistance (R4) and metal-oxide-semiconductor (Q2), the other end connects the S utmost point the ground connection of metal-oxide-semiconductor (Q2); The D end of metal-oxide-semiconductor (Q2) is by resistance (R
s2) connect main drive circuit;
R
s3adjust current circuit (10), comprise resistance (R
s3), metal-oxide-semiconductor (Q3) and resistance (R8), the G utmost point of resistance (R8) one end contact resistance (R3) and metal-oxide-semiconductor (Q3), the other end connects the S utmost point the ground connection of metal-oxide-semiconductor (Q2); The D end of metal-oxide-semiconductor (Q3) is by resistance (R
s3) connect main drive circuit;
Wherein, resistance (R
s1), resistance (R
s2) and resistance (R
s3) resistance value each unequal.
Adopt after technique scheme, the utility model just can regulate the brightness of illumination of LED lamp by disconnecting quick-make switch, simple to operation again.
Brief description of the drawings
Fig. 1 is circuit structure schematic diagram of the present utility model;
Fig. 2 is the typical application circuit figure of BP3122.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
embodiment: a kind of circuit structure of many grades of Dimmable LED driving powers, as shown in Figure 1, comprising: main drive circuit and MCU control circuit.Main drive circuit output voltage signal, positive pole and the negative pole of connection LED lamp, and output current, be the power supply of LED lamp; MCU control circuit, receives the voltage signal of autonomous drive circuit, and can be switched to R according to voltage signal
s1adjust current circuit (8), R
s2adjust current circuit (9) or R
s3adjust current circuit (10).Thereby, can be by switching R
s1adjust current circuit (8), R
s2adjust current circuit (9) and R
s3adjust current circuit (10), regulate the size of current of supplying with LED lamp, and then control its brightness.
Main drive circuit comprises: current rectifying and wave filtering circuit (2), IC power supply circuits (3), the former limit of IC feedback circuit (4) and output rectifier and filter (5).Current rectifying and wave filtering circuit (2) comprises rectifier bridge stack (B1) and electrochemical capacitor (CE1).IC power supply circuits (3), comprise resistance (R9), resistance (R10) and electric capacity (C2), three's series connection; The former limit of IC feedback circuit (4), comprises chip U1 and transformer T1, and chip (U1) model is BP3122; Main drive circuit is the typical application circuit based on BP3122, is the adaptation of doing on the typical application circuit of BP3122, and the typical application circuit of BP3122 as shown in Figure 2.Wherein, the resistance of 1 pin CS end of chip (U1) is to adjust leakage resistance, the formula by the tables of data of drive IC: the expression formula of transformer primary side peak current is I
p-PK=500/R
cS(mA), the computational methods of LED output current are I
lED=I
p-PK* N
p/ 4*N
sthereby, draw, in the scope of satisfied normal work, Rcs and Iled are the relations of inverse ratio, can regulate by RCS the size of Iled.Output rectifier and filter (5), comprise fast recovery diode (D2), electric capacity (C3) and resistance (R11), electric capacity (C3) and resistance (R11) parallel connection, fast recovery diode (D2) is connected between the cathode output end and electric capacity (C3) and parallel circuits one end of resistance (R11) composition of transformer (T1), output V+; The cathode output end of transformer (T1) connects the other end of the parallel circuits of electric capacity (C3) and resistance (R11) composition, output V-.
MCU control circuit comprises: for MCU control circuit provides power supply circuits (7), time control circuit (6), the R of electric energy
s1adjust current circuit (8), R
s2adjust current circuit (9) and R
s3adjust current circuit (10).For providing the power supply circuits (7) of electric energy, MCU control circuit comprises resistance (R2), voltage stabilizing didoe (VD1) and diode (D1), resistance (R2) and voltage stabilizing didoe (VD1) are connected between the cathode output end and cathode output end of rectifier bridge stack (B1), and diode (D1) is connected between the negative pole and resistance (R2) of voltage stabilizing didoe (VD1) with its positive terminal.Time control circuit (6), comprises electric capacity (C1) and resistance (R1), the two parallel connection; Electric capacity (C1) is connected the negative pole of the diode (D1) in power supply circuits (7) and connects MCU(U2 with one end of the parallel circuits (being time control circuit (6)) of resistance (R1) composition), the other end ground connection of time control circuit (6), MCU(U2) a port ground connection, within the effective time of K switch 1 (1) deenergization of main drive circuit (being generally in 3S), maintain MCU(U2 by the stored electric energy of electric capacity (C1)) operation.R
s1adjust current circuit (8) to comprise resistance (R
s1), metal-oxide-semiconductor (Q1) and resistance (R6), the G utmost point of resistance (R6) one end contact resistance (R5) and metal-oxide-semiconductor (Q1), the other end connects the S utmost point the ground connection of metal-oxide-semiconductor (Q1), the other end of resistance (R5) connects MCU(U2) an output; The D end of metal-oxide-semiconductor (Q1) is by resistance (R
s1) connect an input port of the chip (U1) in main drive circuit; R
s2adjust current circuit (9) to comprise resistance (R
s2), metal-oxide-semiconductor (Q2) and resistance (R7), the G utmost point of resistance (R7) one end contact resistance (R4) and metal-oxide-semiconductor (Q2), the other end connects the S utmost point the ground connection of metal-oxide-semiconductor (Q2), the other end of resistance (R4) connects MCU(U2) another output; The D end of metal-oxide-semiconductor (Q2) is by resistance (R
s2) connect an input port of the chip (U1) in main drive circuit; R
s3adjust current circuit (10) to comprise resistance (R
s3), metal-oxide-semiconductor (Q3) and resistance (R8), the G utmost point of resistance (R8) one end contact resistance R3 and metal-oxide-semiconductor (Q3), the other end connects the S utmost point the ground connection of metal-oxide-semiconductor (Q2), the other end of resistance (R3) connects MCU(U2) another output; The D end of metal-oxide-semiconductor (Q3) is by resistance (R
s3) connect an input port of the chip (U1) in main drive circuit; Wherein, resistance (R
s1), resistance (R
s2) and resistance (R
s3) resistance value each unequal.
As K switch 1(1) closure while accessing civil power, 220V alternating current is through rectifier bridge stack (B1), become the direct current of pulsation, become more level and smooth direct current by electrochemical capacitor (CE1) filtering, for subsequent conditioning circuit and the MCU control circuit of main drive circuit provide electric energy, after diode (D1) rectification, for time control circuit (6) charging, and to MCU(U2) send voltage signal, MCU(U2) receive after voltage signal, alternatively select conducting R
s1adjust current circuit (8), R
s2adjust current circuit (9) or R
s3adjust current circuit (10), thereby LED lamp is adjusted to a certain brightness; As K switch 1(1) disconnect time, MCU(U2) lose the voltage signal of self-powered circuit (7), maintain MCU(U2 by time control circuit (6) (being generally 3S) within effective time) work, Closing Switch K1(1 again within effective time), MCU(U2) again receive after the voltage signal of self-powered circuit (7), one of them adjusts current circuit to adjust current circuit alternatively conducting from two other, and LED lamp is adjusted to another brightness; As K switch 1(1) while again disconnecting, as above process be MCU(U2 by time control circuit (6) within effective time) maintenance work electric energy, and within effective time Closing Switch K1(1 again) time, switch to the 3rd tune current circuit.So far, realize the many grades of adjustings to LED lamp, easy-to-operate.
Connecting above circuit carries out simple programming and can realize by shirtsleeve operation mode LED illumination many grades of adjustable objects to MCU, is connected mode and the structure of sort circuit and the utility model will be protected, not computer program.The above is only preferred embodiments of the present utility model, and the equivalence of doing according to structure, feature and principle described in the utility model patent claim therefore all changes or modifies, and is included in the utility model patent claim.
Claims (4)
1. a circuit structure for more than grade of Dimmable LED driving power, is characterized in that:
Comprise:
Main drive circuit, output voltage signal, positive pole and the negative pole of connection LED lamp, and output current, be the power supply of LED lamp;
MCU control circuit, receives the voltage signal of autonomous drive circuit, and is switched to R according to voltage signal
s1adjust current circuit (8), R
s2adjust current circuit (9) or R
s3adjust current circuit (10).
2. the circuit structure of many grades of Dimmable LED driving powers according to claim 1, is characterized in that: described main drive circuit comprises:
Current rectifying and wave filtering circuit (2), comprises rectifier bridge stack (B1) and electrochemical capacitor (CE1);
IC power supply circuits (3), comprise resistance (R9), resistance (R10) and electric capacity (C2), three's series connection;
The former limit of IC feedback circuit (4), comprises chip U1 and transformer T1;
Output rectifier and filter (5), comprise fast recovery diode (D2), electric capacity (C3) and resistance (R11), electric capacity (C3) and resistance (R11) parallel connection, fast recovery diode (D2) is connected between the cathode output end and electric capacity (C3) and parallel circuits one end of resistance (R11) composition of transformer (T1), output V+; The cathode output end of transformer (T1) connects the other end of the parallel circuits of electric capacity (C3) and resistance (R11) composition, output V-.
3. the circuit structure of many grades of Dimmable LED driving powers according to claim 2, is characterized in that: described chip (U1) model is BP3122, the typical application circuit of main drive circuit based on BP3122.
4. according to the circuit structure of many grades of Dimmable LED driving powers described in claim 1 ~ 3 any one, it is characterized in that:
Described MCU control circuit comprises:
For MCU control circuit provides the power supply circuits (7) of electric energy, comprise resistance R 2, voltage stabilizing didoe VD1 and diode D1;
Time control circuit (6), comprises electric capacity (C1) and resistance (R1), the two parallel connection;
R
s1adjust current circuit (8), comprise resistance (R
s1), metal-oxide-semiconductor (Q1) and resistance (R6), the G utmost point of resistance (R6) one end contact resistance (R5) and metal-oxide-semiconductor (Q1), the other end connects the S utmost point the ground connection of metal-oxide-semiconductor (Q1); The D end of metal-oxide-semiconductor (Q1) is by resistance (R
s1) connect main drive circuit;
R
s2adjust current circuit (9), comprise resistance (R
s2), metal-oxide-semiconductor (Q2) and resistance (R7), the G utmost point of resistance (R7) one end contact resistance R4 and metal-oxide-semiconductor (Q2), the other end connects the S utmost point the ground connection of metal-oxide-semiconductor (Q2); The D end of metal-oxide-semiconductor (Q2) is by resistance (R
s2) connect main drive circuit;
R
s3adjust current circuit (10), comprise resistance (R
s3), metal-oxide-semiconductor (Q3) and resistance (R8), the G utmost point of resistance (R8) one end contact resistance (R3) and metal-oxide-semiconductor (Q3), the other end connects the S utmost point the ground connection of metal-oxide-semiconductor (Q2); The D end of metal-oxide-semiconductor (Q3) is by resistance (R
s3) connect main drive circuit;
Wherein, resistance (R
s1), resistance (R
s2) and resistance (R
s3) resistance value each unequal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420261912.XU CN203872402U (en) | 2014-05-22 | 2014-05-22 | Circuit structure of multi-gear light-adjustable LED driving power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420261912.XU CN203872402U (en) | 2014-05-22 | 2014-05-22 | Circuit structure of multi-gear light-adjustable LED driving power supply |
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| Publication Number | Publication Date |
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| CN203872402U true CN203872402U (en) | 2014-10-08 |
Family
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| CN201420261912.XU Expired - Fee Related CN203872402U (en) | 2014-05-22 | 2014-05-22 | Circuit structure of multi-gear light-adjustable LED driving power supply |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106199461A (en) * | 2016-07-21 | 2016-12-07 | 卫斌鹏 | A kind of LED lamp source test circuit |
| CN106450952A (en) * | 2016-09-30 | 2017-02-22 | 中山市尚能电子科技有限公司 | An energy-saving socket and its remote control circuit |
| WO2017120795A1 (en) * | 2016-01-13 | 2017-07-20 | Tridonic Gmbh & Co Kg | Switched converter for driving leds or for supplying further led converter stage |
| CN110461067A (en) * | 2019-08-27 | 2019-11-15 | 深圳市必易微电子有限公司 | The load driving circuits and its lighting driving system and driving method of a kind of power switch regulatory function |
| CN120091477A (en) * | 2025-03-03 | 2025-06-03 | 苏州烁米电子科技有限公司 | A control circuit for realizing 0-10V dimming and multi-level setting |
-
2014
- 2014-05-22 CN CN201420261912.XU patent/CN203872402U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017120795A1 (en) * | 2016-01-13 | 2017-07-20 | Tridonic Gmbh & Co Kg | Switched converter for driving leds or for supplying further led converter stage |
| CN108370636A (en) * | 2016-01-13 | 2018-08-03 | 赤多尼科两合股份有限公司 | Switch converters for driving LED or for supplying other LED transducer-levels |
| CN108370636B (en) * | 2016-01-13 | 2020-03-06 | 赤多尼科两合股份有限公司 | Switching converter for driving LEDs or for supplying further LED converter stages |
| CN106199461A (en) * | 2016-07-21 | 2016-12-07 | 卫斌鹏 | A kind of LED lamp source test circuit |
| CN106450952A (en) * | 2016-09-30 | 2017-02-22 | 中山市尚能电子科技有限公司 | An energy-saving socket and its remote control circuit |
| CN110461067A (en) * | 2019-08-27 | 2019-11-15 | 深圳市必易微电子有限公司 | The load driving circuits and its lighting driving system and driving method of a kind of power switch regulatory function |
| CN110461067B (en) * | 2019-08-27 | 2024-08-02 | 深圳市必易微电子股份有限公司 | Load driving circuit with power supply switch adjusting function, illumination driving system and driving method thereof |
| CN120091477A (en) * | 2025-03-03 | 2025-06-03 | 苏州烁米电子科技有限公司 | A control circuit for realizing 0-10V dimming and multi-level setting |
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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: 20141008 Termination date: 20180522 |