CN106357117A - Non-isolated switching power supply for high-voltage light strip - Google Patents
Non-isolated switching power supply for high-voltage light strip Download PDFInfo
- Publication number
- CN106357117A CN106357117A CN201610786542.5A CN201610786542A CN106357117A CN 106357117 A CN106357117 A CN 106357117A CN 201610786542 A CN201610786542 A CN 201610786542A CN 106357117 A CN106357117 A CN 106357117A
- Authority
- CN
- China
- Prior art keywords
- circuit
- power supply
- bridge rectifier
- switch power
- voltage
- 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.)
- Pending
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Classifications
-
- 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
- H05B45/3725—Switched mode power supply [SMPS]
- H05B45/375—Switched mode power supply [SMPS] using buck topology
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
- H02M3/33523—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/12—Arrangements for reducing harmonics from ac input or output
- H02M1/126—Arrangements for reducing harmonics from ac input or output using passive filters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
-
- 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
- H05B44/00—Circuit arrangements for operating electroluminescent light sources
-
- 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]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
-
- 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]
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- Dc-Dc Converters (AREA)
- Rectifiers (AREA)
Abstract
The invention discloses a non-isolated switching power supply for a high-voltage light strip. The power supply comprises a full-bridge rectifier circuit, a switching tube Q2, an electrolytic capacitor C2, an energy-storage inductor L1, a diode D4 and a PWM (pulse-width modulation) circuit, wherein a PWM signal output end of the PWM circuit is connected with a control electrode of the switching tube Q2, the switching tube Q2 and the diode D4 are connected in series between two output ends of the full-bridge rectifier circuit, a negative electrode of the diode D4 is connected with a positive output end +VCC of the full-bridge rectifier circuit, and the energy-storage inductor L1 is connected between a negative electrode of the electrolytic capacitor C2 and a positive electrode of the diode D4. The non-isolated switching power supply adopts a brand new circuit structure, the voltage of the energy-storage inductor L1 is modulated according to the pulse width of the PWM circuit to be maintained at 130 V, so that the electrolytic capacitor C2 can output the high voltage of 180 V constantly, the power supply is low in cost, and a high-voltage strip manufacturer using the power supply has more competitiveness than other high-voltage strip manufacturers.
Description
Technical field
The present invention relates to Switching Power Supply, especially for the Unisolated switch power supply of high pressure light bar.
Background technology
The installation of high pressure LED lamp band is fairly simple, can directly be driven with the driver of high pressure, general factory is directly permissible
Configure, connect 220v power supply just can with normal work because high pressure LED lamp band join be high pressure power supply, general one
Power supply can carry 30 ~ 50 meters of LED lamp bands, and, comparatively high tension voltage cost is than less expensive.Existing high pressure light bar at present
The power supply being adopted is isolation type switching power supply, and isolation type switching power supply price is higher, occupies a big chunk light bar and uses
How cost, reduce light bar use cost, further so that manufacturer shows one's talent from the market competition, reduces high voltage power supply
Cost be exactly key therein.
Content of the invention
In order to overcome the above-mentioned deficiencies of the prior art, it is an object of the invention to provide the low cost for high pressure light bar is non-
Isolating switch power.
To achieve these goals, the technical solution used in the present invention is:
For the Unisolated switch power supply of high pressure light bar, including full bridge rectifier, switching tube q2, electrochemical capacitor c2, energy storage electricity
Sense l1, diode d4, pwm circuit, the pwm signal output part of this pwm circuit is connected with the control pole of switching tube q2, this switching tube
Q2 and diode d4 is connected between two outfans of full bridge rectifier, and the negative pole of diode d4 and full bridge rectifier
Positive output end+vcc connects, and energy storage inductor l1 is connected between the negative pole of electrochemical capacitor c2 and the positive pole of diode d4, this electrolysis
The positive pole of electric capacity c2 is connected with the positive output end+vcc of full bridge rectifier, and the positive and negative electrode of this electrochemical capacitor c2 is as whole
The positive-negative output end of Unisolated switch power supply.
Reference circuit that described Unisolated switch power supply also includes being sequentially connected, compare amplifying circuit, output sampling circuit,
This output sampling circuit is connected with the positive output end+vcc of full bridge rectifier to obtain output voltage, compares amplifying circuit and is used for
Relatively output voltage and reference voltage the pwm signal width according to comparative result adjustment pwm circuit.
Described Unisolated switch power supply also includes relay relay1 and input protection circuit, and this relay relay1 touches
Point is serially connected between the positive pole of electrochemical capacitor c2 and the positive output end of Unisolated switch power supply, input protection circuit and relay
The coil of relay1 connects the closing of contact and shutoff in order to control relay relay1.
Described Unisolated switch power supply also includes start-up circuit and power supply circuits, and this start-up circuit has a transformator, should
The primary side winding of transformator is described energy storage inductor l1, and the vice-side winding of transformator is as the input of start-up circuit, this startup
Circuit provides running voltage for described pwm circuit.
The input of described full bridge rectifier is connected with emc circuit.
The input of described emc circuit is connected with anti-surge protection circuit, and the input of this anti-surge protection circuit is used for
Connect ac220v.
The invention has the beneficial effects as follows:
The Unisolated switch power supply of the present invention adopts brand-new circuit structure, based on full bridge rectifier, switching tube q2, electrolysis electricity
Hold the annexation of the parts such as c2, energy storage inductor l1, diode d4, pwm circuit, and by the pulse width modulation of pwm circuit
The voltage of energy storage inductor l1 is maintained at 130v so that electrochemical capacitor c2 can export 180v high pressure all the time, and power supply low cost
Honest and clean so that high pressure light bar manufacturer to compare other more competitive.
Brief description
Below in conjunction with the accompanying drawings the specific embodiment of the present invention is described further.
Fig. 1 is the schematic block circuit diagram of Unisolated switch power supply of the present invention；
Fig. 2 is the circuit diagram of front end of the present invention surge, emc and rectification module；
Fig. 3 is the circuit diagram of start-up circuit and power supply circuits；
Fig. 4 is the circuit diagram of pwm circuit；
Fig. 5 is the circuit diagram of reference circuit；
Fig. 6 is the layout comparing amplifying circuit and output sampling circuit；
Fig. 7 is the circuit diagram of input protection circuit and relay.
Specific embodiment
As shown in figure 1, for the present invention the Unisolated switch power supply for high pressure light bar, including full bridge rectifier 10,
Switching tube q2, electrochemical capacitor c2, energy storage inductor l1, diode d4, pwm circuit 90, and it is connected to full bridge rectifier 10
Filter capacitor c1 between two outfans.The present embodiment breaker in middle pipe q2 adopts field effect transistor, but is not limited only to this field effect transistor,
Other conventionally known interchangeable switching tubes are also applied for the present invention.
The annexation of foregoing circuit is: the pwm signal output part of pwm circuit 90 is connected with the control pole of switching tube q2,
This switching tube q2 and diode d4 is connected between two outfans of full bridge rectifier 10, and the negative pole of diode d4 and full-bridge
Positive output end+the vcc of rectification circuit 10 connects, and energy storage inductor l1 is connected to the negative pole of electrochemical capacitor c2 and the positive pole of diode d4
Between, the positive pole of this electrochemical capacitor c2 is connected with the positive output end+vcc of full bridge rectifier 10, and this electrochemical capacitor c2 just,
Negative pole is as the positive-negative output end of whole Unisolated switch power supply.
Its operation principle is: input voltage vcc=311v after the direct rectifying and wave-filtering of ac220v alternating current, when q2 turns on,
D4 ends, and electrochemical capacitor c2 charges, and electric current flows into l1, l1 energy storage by c2；When q2 turns off, d4 turns on, and l1 releases energy, electricity
Stream is charged to load and electric capacity c2 by d4, by the switch of the pulse width modulating switch pipe q2 of pwm circuit 90, controls energy storage
The voltage of inductance l1 is maintained at 130v so that electrochemical capacitor c2 can export 180v high pressure all the time.
As shown in Fig. 2 the input of described full bridge rectifier 10 is connected with emc circuit 20 carries out electromagnetism interference, emc
The input of circuit 20 is connected with anti-surge protection circuit 30 to prevent the surge impact of line voltage, this anti-surge protection circuit
30 input is used for connecting ac220v.
Unisolated switch power supply also includes start-up circuit 70 and power supply circuits 80 as described in Figure 3, and this start-up circuit 70 has
One transformator, the primary side winding of this transformator is described energy storage inductor l1, and the vice-side winding of transformator is as start-up circuit 70
Input, this start-up circuit 70 provides running voltage for described pwm circuit 90, and power supply circuits 80 are that other circuit of the present invention carry
For running voltage vdd.
As Figure 4-Figure 6, the Unisolated switch power supply of the present invention also includes being sequentially connected reference circuit 40, compare and put
Big circuit 50, output sampling circuit 60, this output sampling circuit 60 be connected with the positive output end+vcc of full bridge rectifier 10 with
Obtain output voltage, compare amplifying circuit 50 and be used for comparing output voltage with reference voltage and according to comparative result adjustment pwm electricity
The pwm signal width on road 90, wherein, comparative result feeds back to the ic chip of pwm circuit 90 by the optocoupler u4 of reference circuit 40
U1, realizes the constant of output voltage.
As shown in fig. 7, described Unisolated switch power supply also includes relay relay1 and input protection circuit 100, this continues
The contact of electrical equipment relay1 is serially connected between the positive pole of electrochemical capacitor c2 and the positive output end of Unisolated switch power supply, input protection
Circuit 100 is connected the closing of contact and the shutoff in order to control relay relay1 with the coil of relay relay1.This input is protected
Protection circuit 100 is used for detecting that sampling voltage vs carrys out the switch of control relay, due to (ac190v- when input voltage is normal
Ac264v), in 3v to 6v, ic exports 7 feet and normally exports for low level relay sampling voltage vs；When input voltage ac220v surpasses
Cross 265v, sampling voltage is more than 6v, ic exports 7 feet and turns off output for high level relay；When input voltage ac220v is less than
190v, sampling voltage is less than 3v, and it is that high level relay turns off output that ic exports 7 feet, thus realize input voltage over-pressed or
Open-circuit-protection when under-voltage.
Additionally, being additionally provided with the fan m1 for heat transmission, this fan m1 is controlled by field effect transistor q1, field effect transistor q1
Control pole g be connected with comparing amplifying circuit 50, the unlatching according to concrete output voltage control fan and stopping.
The foregoing is only the preferred embodiments of the present invention, the present invention is not limited to above-mentioned embodiment, as long as with
The technical scheme that essentially identical means realize the object of the invention broadly falls within protection scope of the present invention.
Claims (6)
1. be used for high pressure light bar Unisolated switch power supply it is characterised in that: include full bridge rectifier, switching tube q2, electrolysis
Electric capacity c2, energy storage inductor l1, diode d4, pwm circuit, the pwm signal output part of this pwm circuit and the control pole of switching tube q2
Connect, this switching tube q2 and diode d4 is connected between two outfans of full bridge rectifier, and the negative pole of diode d4 with
Positive output end+the vcc of full bridge rectifier connects, and energy storage inductor l1 with diode d4 is just being connected to the negative pole of electrochemical capacitor c2
Between pole, the positive pole of this electrochemical capacitor c2 is connected with the positive output end+vcc of full bridge rectifier, and this electrochemical capacitor c2 just,
Negative pole is as the positive-negative output end of whole Unisolated switch power supply.
2. Unisolated switch power supply according to claim 1 it is characterised in that: the benchmark electricity that it also includes being sequentially connected
Road, compare amplifying circuit, output sampling circuit, this output sampling circuit be connected with the positive output end+vcc of full bridge rectifier with
Obtain output voltage, compare amplifying circuit and be used for comparing output voltage with reference voltage and according to comparative result adjustment pwm circuit
Pwm signal width.
3. Unisolated switch power supply according to claim 1 it is characterised in that: it also includes relay relay1 and input
Protection circuit, the contact of this relay relay1 is serially connected in the positive pole of electrochemical capacitor c2 and the positive output end of Unisolated switch power supply
Between, input protection circuit is connected the closing of contact and the pass in order to control relay relay1 with the coil of relay relay1
Disconnected.
4. according to the arbitrary described Unisolated switch power supply of claim 1-3 it is characterised in that: it also includes start-up circuit and confession
Circuit, this start-up circuit has a transformator, and the primary side winding of this transformator is described energy storage inductor l1, the secondary of transformator
As the input of start-up circuit, this start-up circuit provides running voltage for described pwm circuit to winding.
5. Unisolated switch power supply according to claim 1 it is characterised in that: the input of described full bridge rectifier is even
It is connected to emc circuit.
6. Unisolated switch power supply according to claim 5 it is characterised in that: the input of described emc circuit is connected with
Anti-surge protection circuit, the input of this anti-surge protection circuit is used for connecting ac220v.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610786542.5A CN106357117A (en) | 2016-08-31 | 2016-08-31 | Non-isolated switching power supply for high-voltage light strip |
| US15/311,660 US20180192494A1 (en) | 2016-08-31 | 2016-09-09 | A non-isolated switching mode power supply for a high-voltage light strip |
| CA2947837A CA2947837C (en) | 2016-08-31 | 2016-09-09 | A non-isolated switching mode power supply for a high-voltage light strip |
| PCT/CN2016/099034 WO2018040132A1 (en) | 2016-08-31 | 2016-09-14 | Non-isolated switched power supply for high voltage led strip |
| BR112016026513-0A BR112016026513A2 (en) | 2016-08-31 | 2016-09-14 | power supply |
| FR1661421A FR3055490B1 (en) | 2016-08-31 | 2016-11-24 | NON-INSULATED CUT POWER SUPPLY FOR A HIGH VOLTAGE LIGHT BAND |
| DE102016122971.7A DE102016122971B4 (en) | 2016-08-31 | 2016-11-29 | Non-insulated switching power supply for a high voltage light strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610786542.5A CN106357117A (en) | 2016-08-31 | 2016-08-31 | Non-isolated switching power supply for high-voltage light strip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106357117A true CN106357117A (en) | 2017-01-25 |
Family
ID=57857616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610786542.5A Pending CN106357117A (en) | 2016-08-31 | 2016-08-31 | Non-isolated switching power supply for high-voltage light strip |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN106357117A (en) |
| DE (1) | DE102016122971B4 (en) |
| FR (1) | FR3055490B1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114421791A (en) * | 2020-10-28 | 2022-04-29 | 苏州捷芯威半导体有限公司 | Double-output energy conversion device, modulation method and power supply equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201386941Y (en) * | 2009-04-20 | 2010-01-20 | 淮南市启迪电子有限公司 | Mining anti-explosion LED fluorescent light |
| CN103715887A (en) * | 2012-10-03 | 2014-04-09 | 三垦电气株式会社 | Direct-current power supply device |
| CN103944416A (en) * | 2014-05-02 | 2014-07-23 | 张新安 | Multi-output switch direct current voltage stabilizing power source with simple circuit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3139483A1 (en) * | 2015-07-15 | 2017-03-08 | OSRAM GmbH | Electronic reverse buck converter, and corresponding method of operating an electronic reverse buck converter |
-
2016
- 2016-08-31 CN CN201610786542.5A patent/CN106357117A/en active Pending
- 2016-11-24 FR FR1661421A patent/FR3055490B1/en active Active
- 2016-11-29 DE DE102016122971.7A patent/DE102016122971B4/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201386941Y (en) * | 2009-04-20 | 2010-01-20 | 淮南市启迪电子有限公司 | Mining anti-explosion LED fluorescent light |
| CN103715887A (en) * | 2012-10-03 | 2014-04-09 | 三垦电气株式会社 | Direct-current power supply device |
| CN103944416A (en) * | 2014-05-02 | 2014-07-23 | 张新安 | Multi-output switch direct current voltage stabilizing power source with simple circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102016122971A1 (en) | 2018-03-01 |
| DE102016122971B4 (en) | 2018-04-05 |
| FR3055490B1 (en) | 2019-11-29 |
| FR3055490A1 (en) | 2018-03-02 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170125 |