CN105972476A - Source electrode voltage-stabilized power source for LED lamp band - Google Patents
Source electrode voltage-stabilized power source for LED lamp band Download PDFInfo
- Publication number
- CN105972476A CN105972476A CN201610417174.7A CN201610417174A CN105972476A CN 105972476 A CN105972476 A CN 105972476A CN 201610417174 A CN201610417174 A CN 201610417174A CN 105972476 A CN105972476 A CN 105972476A
- Authority
- CN
- China
- Prior art keywords
- pole
- resistance
- control chip
- polar capacitor
- pin
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
-
- 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]
- H05B45/40—Details of LED load circuits
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Engineering & Computer Science (AREA)
- Rectifiers (AREA)
Abstract
The invention discloses a source electrode voltage-stabilized power source for an LED lamp band. The source electrode voltage-stabilized power source for the LED lamp band is characterized in that the power source is mainly composed of a control chip U2, a transformer T, a diode rectifier U1, a source electrode voltage stabilizing circuit, a voltage stabilizing diode D1, a polar capacitor C5, a polar capacitor C4, a polar capacitor C3, an overvoltage and overcurrent regulating circuit and the like, wherein the positive electrode of the polar capacitor C3 is connected with the non-dotted terminal of a vice side inductance coil L3 of the transformer T, the negative electrode of the polar capacitor C3 is connected with the dotted terminal of the vice side inductance coil L3 of the transformer T, and the overvoltage and overcurrent regulating circuit is connected with the control chip U2. By means of the source electrode voltage-stabilized power source for the LED lamp band, high-voltage pulses in voltage and high-current waves in current can be effectively regulated, the dynamic conditions of the voltage and the current are kept stable, and accordingly the effect that the source electrode voltage-stabilized power source outputs stable voltage and stable current is ensured.
Description
Technical field
The present invention relates to electronic applications, specifically, be a kind of LED source electrode type voltage regulation power supply.
Background technology
Now with the improving constantly of living standard of people, to the requirement of the landscaping of life the most increasingly
Height, people, for the living environment made oneself beautiful, just use the LED with various light sources to enter indoor
Row beautify, and people are many LED is disposed in the interior the undercut at top in formed beauty the ring of light, this light
Ring can not only beautify living environment, moreover it is possible to bring a kind of beautiful light at night for people.But, existing
The power supply of LED there is output voltage and electric current is unstable, occur when causing LED to use flashing
Situation, thus have impact on the service life of LED.Meanwhile, existing LED power supply there is also
The problem that load capacity is low, thus people's requirement at energy-conservation aspect cannot be met.
Therefore it provides a kind of LED power supply that can export stable voltage and current is the task of top priority.
Summary of the invention
It is an object of the invention to overcome constant current source of the prior art to there is output voltage and electric current is unstable
Fixed, the defect that load capacity is low, it is provided that a kind of LED source electrode type voltage regulation power supply.
The present invention is achieved through the following technical solutions: a kind of LED source electrode type voltage regulation power supply, main
Will be by control chip U2, transformator T, diode rectifier U1, it is serially connected in transformator T former limit inductance coil
The cathode output end of the source electrode mu balanced circuit between L1 and control chip U2, positive pole and diode rectifier U1
Be connected, polar capacitor C1, P pole warp that negative pole is connected with the cathode output end of diode rectifier U1
After resistance R1 the cathode output end with diode rectifier U1 be connected, the VCC of N pole and control chip U2
The Zener diode D1 that pin is connected, positive pole is connected with the VCC pin of control chip U2, negative pole warp
The polar capacitor C5 being connected with the GND pin of control chip U2 after resistance R16, negative pole is through adjustable electric
After resistance R5 the non-same polarity of limit inductance coil L2 former with transformator T be connected, positive pole and control chip U2
The polar capacitor C4 that is connected of VCC pin, positive pole is non-of the same name with transformator T secondary inductance coil L3's
The polar capacitor C3 that end is connected, negative pole is connected with the Same Name of Ends of transformator T secondary inductance coil L3,
And the over-voltage and over-current being connected with control chip U2 adjusts circuit composition；The negative pole of described polar capacitor C1
Ground connection；The Same Name of Ends of described transformator T inductance coil L1 is connected with the P pole of Zener diode D1；Institute
State the Same Name of Ends ground connection of transformator T inductance coil L2；The GND pin ground connection of described control chip U2.
Described over-voltage and over-current adjust circuit by audion VT2, P pole sequentially after resistance R3 and resistance R4 with
The VREF pin of control chip U2 is connected, N pole is managed with the RT of control chip U2 after resistance R11
The diode D5 that foot is connected, positive pole is connected with the RT pin of control chip U2, negative pole and audion
Polar capacitor C8, the P pole that the colelctor electrode of VT2 is connected sequentially after resistance R7 and resistance R6 with control core
The FB pin of sheet U2 is connected, N pole emitter stage with audion VT2 after resistance R13 is connected two
Pole pipe D6, and positive pole base stage with audion VT2 after resistance R12 is connected, negative pole is through adjustable electric
The polar capacitor C9 composition being connected with the SS pin of control chip U2 after resistance R8；Described audion VT2
Grounded collector.
Described source electrode mu balanced circuit by audion VT1, field effect transistor MOS, positive pole after resistance R14 with
The IS pin of control chip U2 is connected, negative pole base stage with audion VT1 after resistance R15 is connected
Polar capacitor C7, P pole be connected with the drain electrode of field effect transistor MOS, N pole after resistance R18 with three
The diode D3 that the emitter stage of pole pipe VT1 is connected, negative pole after resistance R19 with the N of diode D3
The polar capacitor C6, N that pole is connected, positive pole colelctor electrode with audion VT1 after resistance R17 is connected
Pole is connected with the grid of field effect transistor MOS, P pole is managed with the OUT of control chip U2 after resistance R10
The non-same polarity of limit former with transformator T, diode D4, the N pole inductance coil L1 that foot is connected is connected, P
The Zener diode D2 that pole is connected with the source electrode of field effect transistor MOS after resistance R9, and positive pole and change
The Same Name of Ends of depressor T inductance coil L1 is connected, negative pole after resistance R2 with the N of Zener diode D2
The polar capacitor C2 composition that pole is connected；The minus earth of described polar capacitor C6.
For the practical effect of the present invention, described control chip U2 the most preferentially uses FAN7554 integrated
Chip realizes.
The present invention compared with prior art, has the following advantages and beneficial effect:
(1) current ripple high in the high voltage pulse in voltage and electric current can effectively be adjusted by the present invention
Whole, make the dynamic held stationary of voltage and current, ensure that the present invention can export stable voltage and electricity
Stream, and ensure that the stability that LED is luminous.
(2) control chip of the present invention have employed the integrated chip of FAN7554 and realizes, the work of this chip
Stable performance, can effectively be carried out the intensity of output electric current after this chip combines with peripheral circuit simultaneously
Adjust, thus improve the load capacity of the present invention.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the present invention.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing thereof, the present invention is described in further detail, but the enforcement of the present invention
Mode is not limited to this.
Embodiment
As it is shown in figure 1, the present invention is mainly by control chip U2, transformator T, diode rectifier U1,
Resistance R1, adjustable resistance R5, resistance R16, polar capacitor C1, polar capacitor C3, polar capacitor C4,
Polar capacitor C5, Zener diode D1, source electrode mu balanced circuit, and over-voltage and over-current adjust circuit composition.
During connection, source electrode mu balanced circuit be serially connected in transformator T former limit inductance coil L1 and control chip U2
Between.The positive pole of polar capacitor C1 is connected with the cathode output end of diode rectifier U1, its negative pole with
The cathode output end of diode rectifier U1 is connected.The P pole of Zener diode D1 after resistance R1 with
The cathode output end of diode rectifier U1 is connected, the VCC pin phase of its N pole and control chip U2
Connect.
Meanwhile, the positive pole of polar capacitor C5 be connected with the VCC pin of control chip U2, its negative pole warp
After resistance R16, the GND pin with control chip U2 is connected.The negative pole of polar capacitor C4 is through adjustable electric
After resistance R5 the non-same polarity of limit inductance coil L2 former with transformator T be connected, its positive pole and control chip U2
VCC pin be connected.The positive pole of polar capacitor C3 is non-same with transformator T secondary inductance coil L3's
End is connected name, negative pole is connected with the Same Name of Ends of transformator T secondary inductance coil L3.Over-voltage and over-current adjusts
Circuit is connected with control chip U2.
The minus earth of described polar capacitor C1；The Same Name of Ends of described transformator T inductance coil L1 and voltage stabilizing
The P pole of diode D1 is connected；The Same Name of Ends ground connection of described transformator T inductance coil L2；Described control
The GND pin ground connection of chip U2；The input of described diode rectifier U1 is connected with external power source；
The Same Name of Ends of described transformator T secondary inductance coil is connected with LED respectively with non-same polarity.
Further, described over-voltage and over-current adjusts circuit by audion VT2, resistance R3, resistance R4, electricity
Resistance R6, resistance R7, adjustable resistance R8, resistance R11, resistance R12, resistance R13, polar capacitor C8,
Polar capacitor C9, diode D5, and diode D6 form.
During connection, the P pole of diode D5 sequentially after resistance R3 and resistance R4 with control chip U2's
VREF pin is connected, its N pole RT pin with control chip U2 after resistance R11 is connected.Pole
Property the positive pole of electric capacity C8 be connected with the RT pin of control chip U2, the collection of its negative pole and audion VT2
Electrode is connected.The P pole of diode D6 sequentially after resistance R7 and resistance R6 with control chip U2's
FB pin is connected, its N pole emitter stage with audion VT2 after resistance R13 is connected.Polarity electricity
The positive pole base stage with audion VT2 after resistance R12 holding C9 is connected, its negative pole is through adjustable resistance R8
It is connected with the SS pin of control chip U2 afterwards.The grounded collector of described audion VT2.
Further, described source electrode mu balanced circuit by audion VT1, field effect transistor MOS, resistance R2,
Resistance R9, resistance R10, resistance R14, resistance R15, resistance R17, resistance R18, resistance R19,
Polar capacitor C2, polar capacitor C6, polar capacitor C7, Zener diode D2, diode D3, and
Diode D4 forms.
During connection, the positive pole of polar capacitor C7 IS pin with control chip U2 after resistance R14 is connected
Connect, its negative pole base stage with audion VT1 after resistance R15 is connected.The P pole of diode D3 and field
The drain electrode of effect pipe MOS is connected, its N pole emitter stage with audion VT1 after resistance R18 is connected
Connect.The negative pole of polar capacitor C6 N pole with diode D3 after resistance R19 is connected, its positive pole is through electricity
It is connected with the colelctor electrode of audion VT1 after resistance R17.
Meanwhile, the N pole of diode D4 is connected with the grid of field effect transistor MOS, its P pole is through resistance
After R10, the OUT pin with control chip U2 is connected.The N pole of Zener diode D2 and transformator T
The non-same polarity of former limit inductance coil L1 is connected, its P pole after resistance R9 with field effect transistor MOS
Source electrode is connected.The positive pole of polar capacitor C2 is connected with the Same Name of Ends of transformator T inductance coil L1, it
Negative pole N pole with Zener diode D2 after resistance R2 is connected.The negative pole of described polar capacitor C6 connects
Ground.
During operation, current ripple high in the high voltage pulse in voltage and electric current can effectively be carried out by the present invention
Adjust, make the dynamic held stationary of voltage and current, ensure that the present invention can export stable voltage and
Electric current.The control chip of the present invention have employed the integrated chip of FAN7554 and realizes, the service behaviour of this chip
Stable, can effectively the intensity of output electric current be adjusted after this chip combines with peripheral circuit simultaneously,
Thus improve the load capacity of the present invention.
According to above-described embodiment, can well realize the present invention.
Claims (4)
1. a LED source electrode type voltage regulation power supply, it is characterised in that main by control chip U2,
Transformator T, diode rectifier U1, be serially connected in transformator T former limit inductance coil L1 and control chip U2
Between source electrode mu balanced circuit, positive pole is connected with the cathode output end of diode rectifier U1, negative pole and two
Polar capacitor C1, the P pole that the cathode output end of pole pipe commutator U1 is connected after resistance R1 with diode
The cathode output end of commutator U1 is connected, N pole is steady with what the VCC pin of control chip U2 was connected
Pressure diode D1, positive pole is connected with the VCC pin of control chip U2, negative pole after resistance R16 with control
The polar capacitor C5 that the GND pin of coremaking sheet U2 is connected, negative pole after adjustable resistance R5 with transformator
The non-same polarity of T former limit inductance coil L2 is connected, positive pole is connected with the VCC pin of control chip U2
Polar capacitor C4, positive pole is connected with the non-same polarity of transformator T secondary inductance coil L3, negative pole with
The polar capacitor C3 that the Same Name of Ends of transformator T secondary inductance coil L3 is connected, and with control chip U2
The over-voltage and over-current being connected adjusts circuit composition；The minus earth of described polar capacitor C1；Described transformator T
The Same Name of Ends of inductance coil L1 is connected with the P pole of Zener diode D1；Described transformator T inductance coil
The Same Name of Ends ground connection of L2；The GND pin ground connection of described control chip U2.
A kind of LED source electrode type voltage regulation power supply the most according to claim 1, it is characterised in that
Described over-voltage and over-current adjust circuit by audion VT2, P pole sequentially after resistance R3 and resistance R4 with control
The VREF pin of chip U2 is connected, N pole after resistance R11 with the RT pin phase of control chip U2
The diode D5 connected, positive pole is connected with the RT pin of control chip U2, negative pole and audion VT2
Polar capacitor C8, the P pole that is connected of colelctor electrode sequentially after resistance R7 and resistance R6 with control chip
Two poles that the FB pin of U2 is connected, N pole emitter stage with audion VT2 after resistance R13 is connected
Pipe D6, and positive pole base stage with audion VT2 after resistance R12 is connected, negative pole is through adjustable resistance
The polar capacitor C9 composition being connected with the SS pin of control chip U2 after R8；Described audion VT2's
Grounded collector.
A kind of LED source electrode type voltage regulation power supply the most according to claim 2, it is characterised in that
Described source electrode mu balanced circuit by audion VT1, field effect transistor MOS, positive pole after resistance R14 with control core
The polarity that the IS pin of sheet U2 is connected, negative pole base stage with audion VT1 after resistance R15 is connected
Electric capacity C7, P pole is connected with the drain electrode of field effect transistor MOS, N pole after resistance R18 with audion VT1
The diode D3 that is connected of emitter stage, negative pole N pole with diode D3 after resistance R19 is connected,
Polar capacitor C6, N pole that positive pole colelctor electrode with audion VT1 after resistance R17 is connected and field effect
The grid of pipe MOS is connected, P pole OUT pin with control chip U2 after resistance R10 is connected
The non-same polarity of limit former with transformator T, diode D4, N pole inductance coil L1 be connected, P pole is through electricity
The Zener diode D2 that is connected with the source electrode of field effect transistor MOS after resistance R9, and positive pole and transformator T
The Same Name of Ends of inductance coil L1 is connected, negative pole N with Zener diode D2 after resistance R2 is extremely connected
The polar capacitor C2 composition connect；The minus earth of described polar capacitor C6.
A kind of LED source electrode type voltage regulation power supply the most according to claim 3, it is characterised in that
Described control chip U2 is the integrated chip of FAN7554.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610417174.7A CN105972476A (en) | 2016-06-14 | 2016-06-14 | Source electrode voltage-stabilized power source for LED lamp band |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610417174.7A CN105972476A (en) | 2016-06-14 | 2016-06-14 | Source electrode voltage-stabilized power source for LED lamp band |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105972476A true CN105972476A (en) | 2016-09-28 |
Family
ID=57011209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610417174.7A Pending CN105972476A (en) | 2016-06-14 | 2016-06-14 | Source electrode voltage-stabilized power source for LED lamp band |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105972476A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106954303A (en) * | 2017-03-30 | 2017-07-14 | 四川万康节能环保科技有限公司 | A kind of electronic energy-saving lamp controls circuit with ripple current suppressive |
-
2016
- 2016-06-14 CN CN201610417174.7A patent/CN105972476A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106954303A (en) * | 2017-03-30 | 2017-07-14 | 四川万康节能环保科技有限公司 | A kind of electronic energy-saving lamp controls circuit with ripple current suppressive |
| CN106954303B (en) * | 2017-03-30 | 2018-10-02 | 乐清市风杰电子科技有限公司 | A kind of electronic energy-saving lamp ripple current suppressive control circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105873286A (en) | Energy-saving power circuit for constant-current drive type cold light LED | |
| CN106026709A (en) | Light-operated LED switch power supply based on overvoltage and overcurrent protection circuit | |
| CN107949096A (en) | A kind of three collector regulated power supplies of LED light strip with voltage clamping processing | |
| CN105972476A (en) | Source electrode voltage-stabilized power source for LED lamp band | |
| CN105979635A (en) | Source electrode voltage stabilizing power supply based on overvoltage and overcurrent regulator circuit for LED rope lights | |
| CN105979633A (en) | Two-odder active low-pass filter circuit based source electrode voltage-stabilizing power supply for LED lamp band | |
| CN105873299A (en) | LED (light emitting diode) switch voltage stabilizing driving power supply based on power factor correction circuit | |
| CN105979634A (en) | High-impedance source electrode voltage-stabilizing power supply for LED lamp band | |
| CN105979632A (en) | Discrete bootstrap amplifying circuit-based source voltage stabilizing power supply for LED lamp strip | |
| CN105979631A (en) | Active clamping circuit-based source voltage stabilizing power supply for LED lamp strip | |
| CN106132010A (en) | A kind of diode pressure resistant type cold light LED energy-saving electric power circuit | |
| CN106211439A (en) | A kind of LED power supply based on pulse current-limiting circuit | |
| CN106028564A (en) | LED adjustable voltage-regulated driving power supply based on overvoltage protection circuit | |
| CN107743324A (en) | A kind of LED D.C. regulated power supply | |
| CN105813279A (en) | Voltage feedback-based white LED oscillatory efficiency drive system | |
| CN106253685A (en) | A kind of portable Switching Power Supply of low-loss | |
| CN105934044A (en) | Multi-way output voltage stabilized power supply for LED based on snubber circuit | |
| CN105873291A (en) | Voltage feedback type white light LED brightness adjustment driving system | |
| CN105873294A (en) | Efficient white light Led driving system | |
| CN106028571A (en) | LED adjustable voltage-regulated driving power supply based on voltage detection circuit | |
| CN106028568A (en) | LED constant-current driving power supply based on surge voltage suppression circuit | |
| CN107734764A (en) | LED filtering voltage regulation power supply based on three collector direct current regulation circuits | |
| CN107733237A (en) | A kind of LED electricity consumption, which is wandered about as a refugee, dissipates bootstrapping amplifying type D.C. regulated power supply | |
| CN105916246A (en) | White light LED oscillation-type high-efficiency driving system | |
| CN107734762A (en) | A kind of three collector D.C. regulated power supplies of LED of high impedance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160928 |