CN206332880U - It is a kind of to be used to optimize the circuit that controllable silicon maintains electric current - Google Patents
It is a kind of to be used to optimize the circuit that controllable silicon maintains electric current Download PDFInfo
- Publication number
- CN206332880U CN206332880U CN201621331052.8U CN201621331052U CN206332880U CN 206332880 U CN206332880 U CN 206332880U CN 201621331052 U CN201621331052 U CN 201621331052U CN 206332880 U CN206332880 U CN 206332880U
- Authority
- CN
- China
- Prior art keywords
- circuit
- controllable silicon
- electric current
- current
- optimize
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- 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
- Led Devices (AREA)
Abstract
A kind of to be used to optimize the circuit that controllable silicon maintains electric current, the utility model is related to LED drive circuit technical field, solves prior art due to the technical problem such as can not effectively maintain bus power consumption to cause LED drive circuit heating serious.The utility model mainly includes power supply, magnetic silicon controlled switch circuit and rectifier bridge, constitutes controllable silicon driving power supply circuit；The output end of the controllable silicon driving power supply circuit is connected with leakage path, LED channel and the compensation passage maintained for bus current；The compensation passage, samples and bus current and selectively reduces leakage path electric current by the bus excessively stream for being relatively higher than LED channel conduction threshold.The utility model is used to maintain controllable silicon bus current to maintain.
Description
Technical field
The present invention relates to LED drive circuit technical field, and in particular to a kind of to be used to optimize the electricity that controllable silicon maintains electric current
Road.
Background technology
Due to LED nonlinear characteristic, for the LED drive circuit of controllable silicon light modulation, a controllable silicon maintenance is required for
Current circuit, for before LED is opened, maintaining the conducting state of controllable silicon, as shown in Figure 1.Current mode is that setting is tieed up
Electric current is held, before LED unlatching, electric current is constant, if the cut-in voltage of LED is higher, particularly linear LED bogies
Structure, LED voltage is all higher, and such controllable silicon maintains the power consumption of current circuit can be than larger, and one is to cause loss in efficiency larger,
Two be to cause IC heatings serious.
The content of the invention
For above-mentioned prior art, present invention aims at a kind of circuit for being used to optimize controllable silicon maintenance electric current of offer,
Prior art is solved due to the technical problem such as can not effectively maintain bus power consumption to cause LED drive circuit heating serious.
To reach above-mentioned purpose, the technical solution adopted by the present invention is as follows：
It is a kind of to be used to optimize the circuit that controllable silicon maintains electric current, including
Power supply, magnetic silicon controlled switch circuit and rectifier bridge, constitute controllable silicon driving power supply circuit；
The output end of the controllable silicon driving power supply circuit is connected with leakage path, LED channel and for bus current dimension
The compensation passage held；Busbar voltage is the output end voltage of controllable silicon driving power supply circuit, and bus current is controllable silicon driving electricity
The total load current of source circuit.
The compensation passage, the bus current and by being relatively higher than the bus excessively stream of LED channel conduction threshold selectively of sampling
Reduce leakage path electric current, realize the reduction of bus excessively stream self adaptation, to maintain total load power consumption and reduce compensation passage power consumption.
In such scheme, described LED channel, including the LED string and LED drive circuit being sequentially connected in series.
In such scheme, described compensation passage, including
Sample circuit, bus current of sampling；
Current compensation circuit, receives the detection signal exported by sample circuit and outputs control signals in leakage path
Leadage circuit.
In such scheme, described sample circuit, including the integrating circuit being made up of divider resistance and electric capacity.
In such scheme, described current compensation circuit, including
Operational amplifier, receives the detection signal exported by sample circuit；
Switched field effect pipe, by its on or off of the output control of operational amplifier；
Current mirroring circuit, the vent discharge that it is selectively output control signals in leakage path is controlled by switched field effect pipe
Road.
Compared with prior art, beneficial effects of the present invention：
Existing controllable silicon maintains the loss of current circuit, is raised as busbar voltage is raised, in turn results in circuit efficiency
Reduction and device heating it is obvious；While the present invention can keep controllable silicon normal work, as busbar voltage is raised, electricity is maintained
Stream reduction, so that the original mode of loss ratio is small, lifts the efficiency of drive circuit, reduces the heating of device, enhancing circuit can
By property；
The present invention maintains current circuit based on controllable silicon, increases the detection to busbar voltage, by the change of busbar voltage,
Dynamic adjustment maintains the size of electric current, when busbar voltage is raised, and maintains electric current to reduce, so as to reduce the work(for maintaining current circuit
Consumption, lifts the efficiency of LED drive circuit, reduces IC self-heatings, increases the reliability of drive circuit.
Brief description of the drawings
Fig. 1 is that prior art controllable silicon maintains current circuit schematic diagram；
Fig. 2 is that controllable silicon of the present invention maintains current circuit schematic diagram；
Fig. 3 is current compensation circuit schematic diagram of the present invention.
Embodiment
All features disclosed in this specification, or disclosed all methods or during the step of, except mutually exclusive
Feature and/or step beyond, can combine in any way.
The present invention will be further described below in conjunction with the accompanying drawings：
Embodiment 1
As shown in Fig. 2 on the basis of the LED drive circuit of controllable silicon light modulation is traditionally used for, increase sampling network, compensation
Current circuit.Sampling network circuit be used for gather bus voltage signal, during controllable silicon light modulation, the phase of busbar voltage and
Amplitude can all change, and sampling network is transformed into the signal LN of real-time embodying busbar voltage change.The signal LN feedings of generation
Current circuit is compensated, the output signal ICMP of compensation current circuit will follow the change of LN signals, when LN signal amplitude increases,
Signal ICMP will control controllable silicon to maintain electric current to reduce, and realize and maintain one opposite change procedure of electric current and busbar voltage, from
And reduce the power consumption for maintaining current circuit.
As shown in Fig. 2 circuits, this technology is based on traditional controllable silicon and maintains current circuit, increase sampling network, current compensation
Circuit two parts.Sampling network gathers busbar voltage, and the LN signals of generation follow busbar voltage synchronously change.LN signals feeding electricity
Flow compensation circuit, the change for controlling ICMP.LN is raised and height with busbar voltage, and the ICMP signals of generation are used to control
The change of electric current is maintained, when LN is raised, the maintenance electric current controlled by ICMP will reduce.Maintain the change of electric current and busbar voltage
Inverted relationship is melted into, the amplitude of change can be fixed in current compensation circuit inner setting, can also external device, such as electricity
Resistance, electric capacity etc..The power consumption of current circuit is maintained, is directly proportional, when busbar voltage is raised, maintains to busbar voltage and maintenance electric current
Electric current reduces, and for relatively conventional mode, its power consumption will reduce.And then, the efficiency of drive circuit will be lifted than traditional approach, device
The temperature rise of part is also lower than traditional approach.
Such as Fig. 3, the current compensation circuit, by sampling voltage LN, produces an electric current ICMP, this electric current is with LN's
Increase and increase, in this electric current feeding Bleeder circuits of generation；And then LN increases, ICMP increases, and Bleeder circuits
Electric current reduce.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Belong to those skilled in the art the invention discloses technical scope in, the change or replacement that can be readily occurred in, all should
It is included within the scope of the present invention.
Claims (5)
1. a kind of be used to optimize the circuit that controllable silicon maintains electric current, it is characterised in that including
Power supply, magnetic silicon controlled switch circuit and rectifier bridge, constitute controllable silicon driving power supply circuit；
The output end of the controllable silicon driving power supply circuit is connected with leakage path, LED channel and for bus current maintenance
Compensate passage；
The compensation passage, samples and bus current and is selectively reduced by the bus excessively stream for being relatively higher than LED channel conduction threshold
Leakage path electric current.
2. a kind of circuit for being used to optimize controllable silicon maintenance electric current according to claim 1, it is characterised in that described
LED channel, including the LED string and LED drive circuit being sequentially connected in series.
3. a kind of circuit for being used to optimize controllable silicon maintenance electric current according to claim 1 or 2, it is characterised in that described
Compensation passage, including
Sample circuit, bus current of sampling；
Current compensation circuit, receives the detection signal exported by sample circuit and outputs control signals to releasing in leakage path
Circuit.
4. a kind of circuit for being used to optimize controllable silicon maintenance electric current according to claim 3, it is characterised in that described adopts
Sample circuit, including the integrating circuit being made up of divider resistance and electric capacity.
5. a kind of circuit for being used to optimize controllable silicon maintenance electric current according to claim 3, it is characterised in that described electricity
Compensation circuit is flowed, including
Operational amplifier, receives the detection signal exported by sample circuit；
Switched field effect pipe, by its on or off of the output control of operational amplifier；
Current mirroring circuit, the leadage circuit that it is selectively output control signals in leakage path is controlled by switched field effect pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621331052.8U CN206332880U (en) | 2016-12-07 | 2016-12-07 | It is a kind of to be used to optimize the circuit that controllable silicon maintains electric current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621331052.8U CN206332880U (en) | 2016-12-07 | 2016-12-07 | It is a kind of to be used to optimize the circuit that controllable silicon maintains electric current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206332880U true CN206332880U (en) | 2017-07-14 |
Family
ID=59288362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621331052.8U Expired - Fee Related CN206332880U (en) | 2016-12-07 | 2016-12-07 | It is a kind of to be used to optimize the circuit that controllable silicon maintains electric current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206332880U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109788608A (en) * | 2018-04-18 | 2019-05-21 | 矽力杰半导体技术(杭州)有限公司 | LED drive circuit, circuit module and control method with controllable silicon dimmer |
-
2016
- 2016-12-07 CN CN201621331052.8U patent/CN206332880U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109788608A (en) * | 2018-04-18 | 2019-05-21 | 矽力杰半导体技术(杭州)有限公司 | LED drive circuit, circuit module and control method with controllable silicon dimmer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106332374B (en) | A kind of leadage circuit and leakage current control method and LED control circuit | |
| CN104125680B (en) | Variable power supply dimming control circuit | |
| CN206181442U (en) | Bleeder circuit and LED control circuit | |
| CN102790516B (en) | Feedback clamping power metal oxide semiconductor (MOS) pipe drive circuit for power supply management | |
| CN106879118B (en) | A kind of condensance balanced type multi-channel LED driving circuit | |
| CN206533294U (en) | Power supply overheat protector controls circuit and power supply | |
| CN105027682B (en) | The control circuit of LED light device | |
| CN110048591A (en) | A kind of S3R shunts immediate current suppression circuit and method | |
| CN206332880U (en) | It is a kind of to be used to optimize the circuit that controllable silicon maintains electric current | |
| CN103796389B (en) | High-high brightness hoisting module, controllable silicon light modulation LED drive circuit and system | |
| CN208046962U (en) | Led drive circuit | |
| CN208509337U (en) | A kind of power circuit with constant current and constant voltage output | |
| CN203801109U (en) | Maximum brightness enhancing module, silicone controlled rectifier dimming LED driving circuit and silicone controlled rectifier dimming LED driving system | |
| CN207459977U (en) | A kind of switch tube driving circuit | |
| CN106487248A (en) | Controller, Switching Power Supply and line voltage compensation method | |
| CN206931835U (en) | A kind of constant-current source circuit | |
| CN202435252U (en) | IGBT (Insulate Gate Bipolar Transistor) driving and protection circuit | |
| CN205320340U (en) | Silicon controlled rectifier dimming circuit | |
| CN206196097U (en) | Lighting device , control chip and linear dimming system | |
| CN205029927U (en) | Driver chip and single -stage high power factor LED drive arrangement | |
| CN204145831U (en) | A kind of have the LED drive circuit of electric current with temperature self-adaptation regulatory function | |
| CN207505177U (en) | A kind of constant current LED lamp | |
| CN208890630U (en) | The more field-effect tube parallel components of high-pressure electronic fictitious load | |
| CN103108461A (en) | Light-emitting diode (LED) color temperature adjusting device | |
| CN103260285A (en) | Method and circuit for dissipating system heat |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170714 Termination date: 20201207 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |