CN210670675U - Constant-voltage constant-current silicon controlled rectifier dimming driving chip for lighting LED - Google Patents
Constant-voltage constant-current silicon controlled rectifier dimming driving chip for lighting LED Download PDFInfo
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- CN210670675U CN210670675U CN201921379856.9U CN201921379856U CN210670675U CN 210670675 U CN210670675 U CN 210670675U CN 201921379856 U CN201921379856 U CN 201921379856U CN 210670675 U CN210670675 U CN 210670675U
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Abstract
The utility model discloses a drive chip that adjusts luminance of illumination LED constant voltage constant current silicon controlled rectifier, including AC power, silicon controlled rectifier dimmer, rectifier circuit component, filter circuit unit, detection analysis processing unit, constant voltage constant current drive module, load element, PWM light control module and compatible module and transform circuit of adjusting luminance, the AC power is connected with silicon controlled rectifier dimmer and rectifier circuit component respectively, rectifier circuit component, filter circuit unit, detection analysis processing module, constant voltage constant current drive module, load element's output connects gradually, detection analysis processing module's output passes through interface connection with transform circuit, constant voltage constant current drive module and PWM light control module and the compatible module of adjusting luminance are connected. The utility model discloses in, the output is 0 power when the phase angle is less than 0%, needs according to the proportional control PWM signal, when not connecting the position open circuit of light modulator or detection phase place, and the output is in constant voltage constant current state.
Description
Technical Field
The utility model relates to a silicon controlled rectifier driver chip technical field that adjusts luminance especially relates to a LED constant voltage constant current silicon controlled rectifier driver chip that adjusts luminance throws light on.
Background
The silicon controlled dimmer is characterized in that the dimming is performed on the basis of physical properties, starting from an alternating current phase 0, input voltage is chopped, and voltage is not input until the silicon controlled is conducted, the principle is that the conduction angle of each half-wave of alternating current is adjusted to change a sine waveform, so that the effective value of alternating current is changed, and the purpose of dimming is achieved; the output voltage and current of the existing LED lamp dimming control circuit are unstable and in a changing state, so that certain inconvenience exists in use.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the shortcoming that exists among the prior art, and the LED constant voltage constant current silicon controlled rectifier that provides drive chip of adjusting luminance.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the constant-voltage constant-current silicon controlled rectifier dimming driving chip comprises an AC power supply, a silicon controlled rectifier dimmer, a rectifying circuit element, a filtering circuit unit, a detection analysis processing unit, a constant-voltage constant-current driving module, a load element, a PWM dimming control module, a dimming compatibility module and a conversion circuit, wherein the AC power supply is respectively connected with the silicon controlled rectifier dimmer and the rectifying circuit element, the filtering circuit unit, the detection analysis processing unit, the constant-voltage constant-current driving module and the output end of the load element are sequentially connected, the output end of the detection analysis processing unit is connected with the conversion circuit through an interface, and the constant-voltage constant-current driving module is connected with the PWM dimming control module and the dimming compatibility module.
As a further description of the above technical solution:
the detection analysis processing unit comprises a duty ratio detection module and a phase angle detection module, the duty ratio detection module and the phase angle detection module are connected with the output end of the filter circuit unit, and the duty ratio detection module and the phase angle detection module are connected with the constant-voltage constant-current driving module.
As a further description of the above technical solution:
the duty ratio detection module is connected with the duty ratio signal conversion module, the phase angle detection module is connected with the phase angle signal conversion module, and the output ends of the duty ratio signal conversion module and the phase angle signal conversion module are connected with the PWM dimming control module and the dimming compatibility module.
As a further description of the above technical solution:
the input voltage of the AC power supply is 120V (90-140V 60HZ) and 230V (180-277V50HZ), and when the input voltage of the AC power supply changes +/-10%, the output current changes by less than 3%.
As a further description of the above technical solution:
the internal MOS of the constant-voltage constant-current driving module achieves 18W, the external MOS achieves 90W, the internal MOS is driven through a source electrode, and the external MOS is driven through a grid electrode.
As a further description of the above technical solution:
the brightness and power of the silicon controlled dimmer are less than 10% when the silicon controlled dimmer is adjusted to be darkest, and the brightness and power of the silicon controlled dimmer are more than 90% when the silicon controlled dimmer is adjusted to be brightest.
As a further description of the above technical solution:
the constant voltage and constant current driving module is connected with an open circuit protection element, a short circuit protection element, an overcurrent protection element and an overtemperature protection element.
The utility model discloses following beneficial effect has: the chip main control part is designed into a high-PF constant voltage chip or a constant voltage and current chip which can adjust output current in a PWM mode, a detection part detects a phase angle chopped by a silicon controlled dimmer through a zero crossing point or detects a duty ratio of the zero crossing point, the detected average value of 4 or more complete waveforms is converted into a PWM signal (the flicker caused by sudden change of a power grid can be avoided by taking the average value as a reference), the signal frequency is IK or 2K or higher frequency, then the PWM signal is conducted to the main control part to control the output current to be connected with the dimmer and then output to be maximum power when the phase angle is larger than or equal to 90%, the output is 0 power when the phase angle is smaller than 0%, the PWM signal needs to be adjusted according to the proportion, and the output is in a constant voltage and current state when the output is not connected with the dimmer or.
Drawings
Fig. 1 is a schematic overall circuit diagram of a lighting LED constant-voltage constant-current thyristor dimming driving chip provided by the present invention;
fig. 2 is a schematic diagram of a circuit connection of a detection duty cycle module of a lighting LED constant voltage constant current thyristor dimming driving chip provided by the utility model;
fig. 3 is the utility model provides a detection phase angle module circuit connection schematic diagram of illumination LED constant voltage constant current silicon controlled rectifier drive chip that adjusts luminance.
Illustration of the drawings:
1. an AC power source; 2. a silicon controlled dimmer; 3. a rectifier circuit element; 4. a filter circuit unit; 5. a detection analysis processing unit; 6. the constant voltage and constant current driving module; 7. a load element; 8. a conversion circuit; 9. the device comprises a PWM dimming control module and a dimming compatibility module; 10. a detection duty cycle module; 11. a phase angle detection module; 12. A duty cycle signal conversion module; 13. a phase angle signal transition module.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-3, the present invention provides an embodiment: the utility model provides a drive chip that adjusts luminance of illumination LED constant voltage constant current silicon controlled rectifier, including AC power 1, silicon controlled rectifier dimmer 2, rectifier circuit component 3, filter circuit unit 4, detection analysis processing unit 5, constant voltage constant current drive module 6, load component 7, PWM adjusts luminance compatible module 9 and converting circuit 8, AC power 1 is connected with silicon controlled rectifier dimmer 2 and rectifier circuit component 3 respectively, rectifier circuit component 3, filter circuit unit 4, detection analysis processing unit 5, constant voltage constant current drive module 6, the output of load component 7 connects gradually, the output of detection analysis processing unit 5 passes through interface connection with converting circuit 8, constant voltage constant current drive module 6 is connected with PWM adjusts luminance compatible module 9 with the PWM.
The detection analysis processing unit 5 comprises a duty ratio detection module 10 and a phase angle detection module 11, the duty ratio detection module 10 and the phase angle detection module 11 are connected with the output end of the filter circuit unit 4, and the duty ratio detection module 10 and the phase angle detection module 11 are connected with the constant voltage and constant current driving module 6; the duty ratio detection module 10 is connected with the duty ratio signal conversion module 12, the phase angle detection module 11 is connected with the phase angle signal conversion module 13, and the output ends of the duty ratio signal conversion module 12 and the phase angle signal conversion module 13 are connected with the PWM dimming control module and the dimming compatibility module 9; the input voltage of the AC power supply 1 is 120V (90-140V 60HZ) and 230V (180-277V50HZ), and when the input voltage of the AC power supply 1 changes +/-10%, the output current changes by less than 3%; the built-in MOS of the constant-voltage constant-current driving module 6 is 18W, the external MOS is 90W, the built-in MOS is driven by a source electrode, the external MOS is driven by a grid electrode, the built-in MOS pushes and controls the LED lamp to emit light, the built-in MoS mainly aims at a built-in silicon controlled rectifier dimming small-power small-volume product, the better the peripheral device is simplified, the model is temporarily set to be M2695, the built-in MOS leads out a PWM output pin and a PWM input pin, the output voltage is kept unchanged when the LED is in an open circuit or light load, the power consumption is low when the LED is in an open circuit or light load, the model is temporarily set to be M2681, the external MoS grid electrode is driven, the PWM output pin and the PWM input pin are LED out, the voltage is kept unchanged when the LED; the brightness and power of the silicon controlled dimmer 2 are less than 10% when the silicon controlled dimmer 2 is adjusted to be darkest, and the brightness and power of the silicon controlled dimmer 2 are more than 90% when the silicon controlled dimmer 2 is adjusted to be brightest; the constant voltage and constant current driving module 6 is connected with an open circuit protection element, a short circuit protection element, an overcurrent protection element and an overtemperature protection element, has the function of protecting a circuit, and has the advantages that the PF is more than 0.9, the THD is less than 10, the efficiency is more than 85%, and the input power change of cold state and steady state is less than 3%.
The working principle is as follows: when a lighting LED constant-voltage constant-current silicon controlled dimming driving chip is used, an AC power supply 1 rectifies alternating current into direct current through a rectifying circuit element 3, the direct current is detected through a detection analysis processing unit 5, a detection duty ratio module 10 converts a duty ratio signal into a PWM signal under the action of a conversion circuit 8, then the PWM signal is conducted to a PWM dimming control module and a dimming compatibility module 9 to output current, a detection phase angle module 11 converts a phase angle signal into the PWM signal under the action of the conversion circuit 8, then the PWM signal is conducted to the PWM dimming control module and the dimming compatibility module 9 to output current, the maximum power is output when a phase angle is larger than or equal to 90% after a dimmer is connected, the 0 power is output when the phase angle is smaller than 0%, the PWM signal is required to be adjusted according to a proportion, and the dimmer is not connected or the position of a detection phase is, the output is in a constant voltage and constant current state, the LED constant voltage and constant current silicon controlled rectifier dimming driving chip for illumination can reduce current at the temperature of 140 ℃ and is dimming without flicker, and the LED constant voltage and constant current silicon controlled rectifier dimming driving chip is compatible with more than 90% of dimmers in the market.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (7)
1. The utility model provides a drive chip that adjusts luminance of LED constant voltage constant current silicon controlled rectifier of throwing light on, includes AC power (1), silicon controlled rectifier dimmer (2), rectifier circuit component (3), filter circuit unit (4), detection analysis processing unit (5), constant voltage constant current drive module (6), load component (7), PWM adjusts luminance control module and adjusts luminance compatibility module (9) and converting circuit (8), its characterized in that: the AC power supply (1) is respectively connected with the silicon controlled dimmer (2) and the rectifying circuit element (3), the filter circuit unit (4), the detection analysis processing unit (5), the constant voltage and constant current driving module (6) and the output end of the load element (7) are sequentially connected, the output end of the detection analysis processing unit (5) is connected with the conversion circuit (8) through an interface, and the constant voltage and constant current driving module (6) is connected with the PWM dimming control module and the dimming compatibility module (9).
2. The constant-voltage constant-current silicon controlled dimming driving chip for the lighting LED as claimed in claim 1, wherein: the detection analysis processing unit (5) comprises a duty ratio detection module (10) and a phase angle detection module (11), the duty ratio detection module (10) and the phase angle detection module (11) are connected with the output end of the filter circuit unit (4), and the duty ratio detection module (10) and the phase angle detection module (11) are connected with the constant-voltage constant-current driving module (6).
3. The constant-voltage constant-current silicon controlled dimming driving chip for the lighting LED as claimed in claim 2, wherein: the detection duty cycle module (10) is connected with a duty cycle signal conversion module (12), the detection phase angle module (11) is connected with a phase angle signal conversion module (13), and the output ends of the duty cycle signal conversion module (12) and the phase angle signal conversion module (13) are connected with the PWM dimming control module and the dimming compatibility module (9).
4. The constant-voltage constant-current silicon controlled dimming driving chip for the lighting LED as claimed in claim 1, wherein: the input voltage of the AC power supply (1) is 120V (90-140V 60HZ) and 230V (180-277V50HZ), and when the input voltage of the AC power supply (1) changes +/-10%, the output current changes by less than 3%.
5. The constant-voltage constant-current silicon controlled dimming driving chip for the lighting LED as claimed in claim 1, wherein: the internal MOS of the constant-voltage constant-current driving module (6) achieves 18W, the external MOS achieves 90W, the internal MOS is driven through a source electrode, and the external MOS is driven through a grid electrode.
6. The constant-voltage constant-current silicon controlled dimming driving chip for the lighting LED as claimed in claim 1, wherein: the brightness and the power of the silicon controlled dimmer (2) are less than 10% when the silicon controlled dimmer (2) is adjusted to the darkest, and the brightness and the power of the silicon controlled dimmer (2) are more than 90% when the silicon controlled dimmer (2) is adjusted to the brightest.
7. The constant-voltage constant-current silicon controlled dimming driving chip for the lighting LED as claimed in claim 1, wherein: the constant voltage and constant current driving module (6) is connected with an open circuit protection element, a short circuit protection element, an overcurrent protection element and an overtemperature protection element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921379856.9U CN210670675U (en) | 2019-08-23 | 2019-08-23 | Constant-voltage constant-current silicon controlled rectifier dimming driving chip for lighting LED |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921379856.9U CN210670675U (en) | 2019-08-23 | 2019-08-23 | Constant-voltage constant-current silicon controlled rectifier dimming driving chip for lighting LED |
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| CN210670675U true CN210670675U (en) | 2020-06-02 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110572900A (en) * | 2019-08-23 | 2019-12-13 | 南通金茂电子科技有限公司 | novel LED dimming drive circuit |
| CN114222402A (en) * | 2021-12-06 | 2022-03-22 | 深圳市星之佑科技有限公司 | Trinity dimmer circuit |
-
2019
- 2019-08-23 CN CN201921379856.9U patent/CN210670675U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110572900A (en) * | 2019-08-23 | 2019-12-13 | 南通金茂电子科技有限公司 | novel LED dimming drive circuit |
| CN114222402A (en) * | 2021-12-06 | 2022-03-22 | 深圳市星之佑科技有限公司 | Trinity dimmer circuit |
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