CN204948421U - A kind of short-circuit protection circuit and intelligent dimming color-temperature regulating drive system - Google Patents
A kind of short-circuit protection circuit and intelligent dimming color-temperature regulating drive system Download PDFInfo
- Publication number
- CN204948421U CN204948421U CN201520587115.5U CN201520587115U CN204948421U CN 204948421 U CN204948421 U CN 204948421U CN 201520587115 U CN201520587115 U CN 201520587115U CN 204948421 U CN204948421 U CN 204948421U
- Authority
- CN
- China
- Prior art keywords
- module
- circuit
- short
- oxide
- semiconductor
- 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
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model relates to electronic circuit technology field, especially a kind of short-circuit protection circuit and intelligent dimming color-temperature regulating drive system.Wherein, short-circuit protection circuit comprises a metal-oxide-semiconductor and some roads outlet line; outlet line described in every road is all connected the grid of metal-oxide-semiconductor with the first voltage stabilizing didoe by the current-limiting resistance of connecting successively; the drain electrode of metal-oxide-semiconductor, as the input of pwm signal, is connected with between the grid of metal-oxide-semiconductor and source electrode for the protection of metal-oxide-semiconductor and the first resistance be arranged in parallel each other, the first electric capacity and the second voltage stabilizing didoe.The utility model with DC? to? when the PWM light modulation circuit of DC structure is connected, when short circuit appears in the electric component that wherein any road is connected with outlet line, first voltage stabilizing didoe conducting, make metal-oxide-semiconductor conducting, thus make the enable pin of PWM be connected with the input of pwm signal be drawn as low level, and then make light modulation circuit output voltage be zero, thus reach the function of short-circuit protection; Whole circuit structure is simple, drastically increase stability and reliability that light modulation circuit runs.
Description
Technical field
The utility model relates to electronic circuit technology field, especially a kind of short-circuit protection circuit and the intelligent dimming color-temperature regulating drive system formed based on this short-circuit protection circuit.
Background technology
At present, LED, less energy consumption, applicability high using fail safe strong, can multicolor luminous, antidetonation, life-span length, environmental protection, the advantage such as fast response time more and more extensive in the application of lighting field as new type light source.Along with people are to the raising of lighting requirement, occur increasing intelligent lighting product, as having the product of the function such as light modulation, color-temperature regulating, the circuit that this series products adopts is DCtoDC structure mostly, utilizes single-chip microcomputer to produce pwm signal and carries out light modulation; But the equal no-output short-circuit protection function of existing most of PWM light modulation circuits, makes when there is output short-circuit because the output impedance of powerful DC power supply is very little, the surge current of generation often damages switching tube or whole light modulation or color-temperature regulating circuit.
Therefore, be necessary to provide a kind of short-circuit protection circuit, to promote the self-protection function of intelligent lighting product, ensure the stable operation of illuminating product light modulation, color-temperature regulating function.
Utility model content
For the deficiency that above-mentioned prior art exists, the purpose of this utility model is to provide that a kind of circuit structure is simple, suitability is strong, the significant short-circuit protection circuit of protected effect; Another object of the present utility model is to provide a kind of intelligent dimming color-temperature regulating drive system formed based on this short-circuit protection circuit, the features such as structure is simple, stable performance, safe and reliable, functions expanding is strong that it has.
To achieve these goals, the utility model adopts following technical scheme:
A kind of short-circuit protection circuit; it comprises a metal-oxide-semiconductor and some roads outlet line; outlet line described in every road is all connected the grid of metal-oxide-semiconductor with the first voltage stabilizing didoe by the current-limiting resistance of connecting successively; the drain electrode of described metal-oxide-semiconductor, as the input of pwm signal, is connected with the first resistance, the first electric capacity and the second voltage stabilizing didoe that are arranged in parallel each other between the grid of described metal-oxide-semiconductor and source electrode.
Preferably, described outlet line is two-way altogether, and a road is for connecting warm colour LED string, another road for connecting cool colour LED string.
A kind of intelligent dimming color-temperature regulating drive system, it comprises:
For alternating voltage being converted to the AC-DC modular converter of direct voltage;
The control module exported of powering is carried out for controlling AC-DC modular converter;
For the output voltage step-down of AC-DC modular converter being different magnitude of voltage and the voltage reduction module of powering to control module;
For inputting current regulating module and the colour temperature adjustment module of PWM modulation signal, described colour temperature adjustment module is connected to the output of current regulating module;
Be connected to the output of voltage reduction module and first DC Module of powering to current regulating module;
And
The short circuit protection module be made up of above-mentioned short-circuit protection circuit; the outlet line of described short circuit protection module is corresponding with the output of colour temperature adjustment module to be connected, and the pwm signal input of described short circuit protection module connects the pwm signal input pin of current regulating module.
Preferably, it also comprises one for providing the galvanic expansion supply module of 3.3V to expanding unit, and described expansion supply module is connected to the output of voltage reduction module.
Owing to have employed such scheme, the utility model is when the PWM light modulation circuit with DCtoDC structure is connected, when short circuit appears in the electric component that wherein any road is connected with outlet line, first voltage stabilizing didoe conducting, make metal-oxide-semiconductor conducting, thus make the enable pin of PWM be connected with the input of pwm signal be drawn as low level, and then make light modulation circuit output voltage be zero, thus reach the function of short-circuit protection; Meanwhile, the drive system formed by short-circuit protection circuit then has the feature such as stable performance, feature richness, and its structure is simple, drastically increase stability and reliability that light modulation circuit runs.
Accompanying drawing explanation
Fig. 1 is the structure chart of the short-circuit protection circuit of the utility model embodiment;
Fig. 2 is the theory diagram of the drive system of the utility model embodiment;
Fig. 3 is the circuit structure diagram () of the drive system of the utility model embodiment;
Fig. 4 is the circuit structure diagram (two) of the drive system of the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
As shown in Figure 1; a kind of short-circuit protection circuit that the present embodiment provides; it comprises a metal-oxide-semiconductor Q4 and some roads outlet line; every road outlet line is all connected the grid of metal-oxide-semiconductor Q4 with the first voltage stabilizing didoe ZD1 by the current-limiting resistance R5 that connects successively; the drain electrode of metal-oxide-semiconductor Q4 is as the input of pwm signal; meanwhile, be connected with to play between the grid and source electrode of metal-oxide-semiconductor Q4 and protect the effect of metal-oxide-semiconductor Q4 and the first resistance R1 be arranged in parallel each other, the first electric capacity C1 and the second voltage stabilizing didoe ZD2.Whole circuit is formed primarily of metal-oxide-semiconductor Q4 and voltage stabilizing didoe, when the PWM light modulation circuit with DCtoDC structure is connected, when short circuit appears in the electric component that wherein any road is connected with outlet line, first voltage stabilizing didoe ZD1 conducting, make metal-oxide-semiconductor Q4 conducting, thus make the enable pin of PWM be connected with the input of pwm signal be drawn as low level, and then make light modulation circuit output voltage be zero, thus reach the function of short-circuit protection; Whole circuit structure is simple, drastically increase stability and reliability that light modulation circuit runs.
As a preferred version, the outlet line of the present embodiment is two-way altogether, and wherein a road is for connecting warm colour LED string, another road then for connecting cool colour LED string.
Based on above-mentioned short-circuit protection circuit, as shown in Figure 2, the present embodiment additionally provides a kind of intelligent dimming color-temperature regulating drive system (its particular circuit configurations can be arranged with reference to figure 3 and Fig. 4), and it comprises:
AC-DC modular converter 1, is mainly used in connecting external power source and alternating voltage being converted to direct voltage;
Control module 2, is mainly used in controlling AC-DC modular converter 1 and carries out power supply output;
Voltage reduction module 3, the transformer primarily of a primary side with three coils is formed, and it is for being different magnitude of voltage by the output voltage step-down of AC-DC modular converter 1 and powering to control module 2;
Current regulating module 4, for realizing the automatic adjustment to LED string power output;
Colour temperature adjustment module 5, carry out switching controls for realizing to cold-warm color LED string, it is connected between the output of current regulating module 4 and LED string;
First DC Module 6, is connected to the output of voltage reduction module 3, by carrying out the backward current regulating module 4 of process such as filtering voltage regulation to the direct voltage after step-down and colour temperature adjustment module 5 provides operating voltage;
And
Short circuit protection module 7; it is formed primarily of above-mentioned short-circuit protection circuit; wherein, the outlet line of short circuit protection module 7 is corresponding with the output of colour temperature adjustment module 5 to be connected, and the pwm signal input of short circuit protection module 7 connects the pwm signal input pin of current regulating module 4.
With this optimization by system configuration, make whole system have the function of intelligent dimming, color-temperature regulating and short-circuit protection, effectively ensure that safely and steadily running of system; Utilize the hardware foundation that whole system provides, by implanting the optimization of software program practical function and performance simultaneously.
For enriching the function of whole system to greatest extent, as realized remote pilot, Voice command etc., the system of the present embodiment also comprises one for providing the galvanic expansion supply module 8 of 3.3V to expanding unit (as wireless remote control module, voice device etc.), and expansion supply module 8 is connected to the output of voltage reduction module 3.
The foregoing is only preferred embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model specification and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (4)
1. a short-circuit protection circuit; it is characterized in that: it comprises a metal-oxide-semiconductor and some roads outlet line; outlet line described in every road is all connected the grid of metal-oxide-semiconductor with the first voltage stabilizing didoe by the current-limiting resistance of connecting successively; the drain electrode of described metal-oxide-semiconductor, as the input of pwm signal, is connected with the first resistance, the first electric capacity and the second voltage stabilizing didoe that are arranged in parallel each other between the grid of described metal-oxide-semiconductor and source electrode.
2. a kind of short-circuit protection circuit as claimed in claim 1, is characterized in that: described outlet line is two-way altogether, and a road is for connecting warm colour LED string, another road for connecting cool colour LED string.
3. an intelligent dimming color-temperature regulating drive system, is characterized in that: it comprises:
For alternating voltage being converted to the AC-DC modular converter of direct voltage;
The control module exported of powering is carried out for controlling AC-DC modular converter;
For the output voltage step-down of AC-DC modular converter being different magnitude of voltage and the voltage reduction module of powering to control module;
For inputting current regulating module and the colour temperature adjustment module of PWM modulation signal, described colour temperature adjustment module is connected to the output of current regulating module;
Be connected to the output of voltage reduction module and first DC Module of powering to current regulating module;
And
The short circuit protection module be made up of a kind of short-circuit protection circuit as claimed in claim 1 or 2; the outlet line of described short circuit protection module is corresponding with the output of colour temperature adjustment module to be connected, and the pwm signal input of described short circuit protection module connects the pwm signal input pin of current regulating module.
4. a kind of intelligent dimming color-temperature regulating drive system as claimed in claim 3, is characterized in that: it also comprises one for providing the galvanic expansion supply module of 3.3V to expanding unit, and described expansion supply module is connected to the output of voltage reduction module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520587115.5U CN204948421U (en) | 2015-08-06 | 2015-08-06 | A kind of short-circuit protection circuit and intelligent dimming color-temperature regulating drive system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520587115.5U CN204948421U (en) | 2015-08-06 | 2015-08-06 | A kind of short-circuit protection circuit and intelligent dimming color-temperature regulating drive system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204948421U true CN204948421U (en) | 2016-01-06 |
Family
ID=55015805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520587115.5U Expired - Fee Related CN204948421U (en) | 2015-08-06 | 2015-08-06 | A kind of short-circuit protection circuit and intelligent dimming color-temperature regulating drive system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204948421U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110493923A (en) * | 2019-08-28 | 2019-11-22 | 合肥大展智能科技有限公司 | A kind of light source and its control method |
-
2015
- 2015-08-06 CN CN201520587115.5U patent/CN204948421U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110493923A (en) * | 2019-08-28 | 2019-11-22 | 合肥大展智能科技有限公司 | A kind of light source and its control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102762011B (en) | LED (Light Emitting Diode) constant-current dimming drive circuit device | |
| CN105101543A (en) | Led drive circuit | |
| CN104125686B (en) | Safe-isolated and full-color LED lamp circuit and dimming method | |
| CN205610982U (en) | LED lamp that LED lamp switch was adjusted luminance and is mixed colours and review drive circuit and have it | |
| CN104427688A (en) | LED alternating current driving circuit | |
| CN104703358A (en) | Wide-voltage-range LED (light emitting diode) lamp switching and dimming driving circuit and LED lamp dimming control system | |
| CN205005298U (en) | LED lamps and lanterns of switch mixing of colors and control circuit thereof | |
| CN202873141U (en) | Switch dimming circuit of wide-voltage high-power factor LED lamp | |
| CN207305003U (en) | Lighting system | |
| CN203872402U (en) | Circuit structure of multi-gear light-adjustable LED driving power supply | |
| CN202551459U (en) | LED (Light Emitting Diode) driving power supply module for silicon controlled regulating circuit | |
| CN206024154U (en) | LED light modulating devices and LED drive power | |
| CN203181303U (en) | Light modulator used for voltage drop dimming light fixture | |
| CN204948421U (en) | A kind of short-circuit protection circuit and intelligent dimming color-temperature regulating drive system | |
| CN205657888U (en) | Auxiliary power circuit , LED drive circuit , LED driver | |
| CN204539556U (en) | The switch dimming drive circuit of Width funtion LED and LED dimming control system | |
| CN204031528U (en) | A kind of energy-conservation driving circuit of high-power LED lamp | |
| CN203872404U (en) | Circuit structure of LED driving power supply capable of realizing light adjustment and color adjustment through silicon controlled dimmer | |
| CN103256509B (en) | Sectional type LED dimming lamp without externally arranged dimmer and dimming method thereof | |
| CN203289704U (en) | Sectional type LED (Light-Emitting Diode) lamp capable of light modulation and free of external light modulator | |
| CN204314660U (en) | A kind of anti-power-limiting socket recognition device | |
| CN204180333U (en) | The multi-channel LED constant-current dimming controller of DC centrally connected power supply | |
| CN102665338A (en) | Light emitting diode (LED) driving power module used for silicon controlled regulating circuit | |
| CN203435195U (en) | MR16 silicon-controlled dimming power source adapting to all electronic transformers | |
| CN203368858U (en) | SSL2108-based buck dimmable LED driving system |
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: 20160106 Termination date: 20180806 |