CN212910143U - Single-stage framework high-power-factor stroboflash-free LED driving power supply - Google Patents
Single-stage framework high-power-factor stroboflash-free LED driving power supply Download PDFInfo
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- CN212910143U CN212910143U CN202022332166.7U CN202022332166U CN212910143U CN 212910143 U CN212910143 U CN 212910143U CN 202022332166 U CN202022332166 U CN 202022332166U CN 212910143 U CN212910143 U CN 212910143U
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Abstract
The utility model discloses a single-stage framework high power factor does not have stroboscopic LED drive power supply, including master control drive circuit, rectification filter circuit, with the filter damping circuit that rectification filter circuit electricity is connected, with the vary voltage circuit that filter damping circuit electricity is connected and with the steady voltage constant current circuit that vary voltage circuit electricity is connected, master control drive circuit respectively with filter damping circuit and vary voltage circuit electricity are connected, steady voltage constant current circuit includes MOS pipe, diode, zener diode, first resistance and first polarity electric capacity, the grid of MOS pipe with zener diode positive electricity respectively connects first polarity electric capacity is anodal, the diode negative pole with zener diode negative pole electricity is connected, the drain electrode electricity of MOS pipe is connected the diode positive pole. The utility model discloses simple structure, it is small, with low costs, be applicable to built-in power supply small size LED lamps and lanterns, realize simple single-stage framework high power factor and do not have stroboscopic LED drive power supply.
Description
Technical Field
The utility model relates to a LED drive circuit, concretely relates to single-stage framework high power factor does not have stroboscopic LED drive power supply.
Background
If the LED illumination has stroboflash, various hazards such as visual fatigue, blurred vision, unclear observation of moving objects, shooting blind areas, headache, epilepsy, mechanical operation injury and the like can be caused or induced, so that the LED illumination is clearly required to be free of stroboflash in more and more occasions such as schools, hospitals, machine tool workshops, homes, sports grounds, photographic fields and the like. Meanwhile, the power system requires a high power factor for lighting power consumption. Therefore, high power factor and no stroboflash will quickly become the basic requirement for LED illumination of various scenes and is not regulated continuously.
The existing LED driving power supply adopts a two-stage framework if the high power factor and no stroboflash are achieved, and the two-stage framework is divided into two modes: one is a low power factor driving power supply and a front stage power factor correction circuit, and the other is a high power factor driving power supply and a rear stage stroboscopic removing circuit. No matter the preceding stage adds the correction circuit or the later stage adds the stroboscopic circuit and can make the power supply volume grow, the cost increases, and does not accord with the development direction of resource saving.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the shortcoming and not enough among the prior art, provide a small, with low costs single-stage framework high power factor does not have stroboscopic LED drive power supply.
The utility model discloses a realize through following technical scheme:
a single-stage framework high-power-factor stroboflash-free LED driving power supply comprises a main control driving circuit, a rectification filter circuit, a filter damping circuit electrically connected with the rectification filter circuit, a voltage transformation circuit electrically connected with the filter damping circuit and a voltage stabilization constant current circuit electrically connected with the voltage transformation circuit, wherein the main control driving circuit is respectively electrically connected with the filter damping circuit and the voltage transformation circuit, the voltage stabilization constant current circuit comprises an MOS (metal oxide semiconductor) tube, a diode, a voltage stabilization diode, a first resistor and a first polarity capacitor, the grid electrode of the MOS tube and the anode of the voltage stabilization diode are respectively and electrically connected with the anode of the first polarity capacitor, the cathode of the diode is electrically connected with the cathode of the voltage stabilization diode, the drain electrode of the MOS tube is electrically connected with the anode of the diode, the first resistor is respectively and electrically connected with the drain electrode of the MOS tube and the anode of the first polarity capacitor, the source electrode of the MOS tube is electrically connected with the output anode of the LED lamp, and the cathode of the first polarity capacitor is electrically connected with the output cathode of the LED lamp.
Further, a VG pin of the master control driving circuit is electrically connected with the filtering damping circuit.
Further, the VG pin of the master control driving circuit is grounded through the first capacitor.
Further, the VG pin of the master control driving circuit is electrically connected with the inductor through a second resistor and a third resistor.
Further, the HV pin of the master control driving circuit is electrically connected with the voltage transformation circuit.
Furthermore, the VCC pin of the master control drive circuit is grounded through a second polarity capacitor.
Further, the second polarity capacitor is connected in parallel with a second capacitor.
Compared with the prior art, the utility model discloses a steady voltage constant current circuit realizes high power factor and does not have the stroboscopic requirement, has reduced the power supply volume, the cost is reduced.
The working principle is as follows: through the control of first polarity electric capacity and first resistance for MOS pipe output current is invariable and output voltage is straight, and the filtering output ripple reaches LED and does not have the stroboscopic, and diode and zener diode improve response speed and protection MOS pipe.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic circuit diagram of the single-stage architecture high power factor stroboflash-free LED driving power supply of the present invention.
In the figure: 1-a master control drive circuit; 2-a rectifying and filtering circuit; 3-a filter damping circuit; 4-a voltage transformation circuit; 5-voltage-stabilizing constant current circuit.
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.
As shown in fig. 1, the utility model relates to a single-stage high power factor stroboflash-free LED driving power supply, which comprises a main control driving circuit 1, a rectification filter circuit 2, a filter damping circuit 3 electrically connected with the rectification filter circuit 2, a transformer circuit 4 electrically connected with the filter damping circuit 3, and a voltage stabilizing constant current circuit 5 electrically connected with the transformer circuit 4, wherein the main control driving circuit 1 is respectively electrically connected with the filter damping circuit 3 and the transformer circuit 4, the voltage stabilizing constant current circuit 5 comprises a MOS transistor Q1, a diode D1, a voltage stabilizing diode ZD1, a first resistor R7 and a first polarity capacitor C1, the gate of the MOS transistor Q1 and the positive electrode of the voltage stabilizing diode ZD1 are respectively electrically connected with the positive electrode of the first polarity capacitor C1, the negative electrode of the diode D1 is electrically connected with the negative electrode of the voltage stabilizing diode ZD1, the drain electrode of the MOS transistor Q1 is electrically connected with the positive electrode of the diode D1, the first resistor R3 is respectively electrically connected with the drain electrode of the MOS transistor Q1, the source electrode of the MOS tube Q1 is electrically connected with the output anode of the LED lamp, and the cathode electrode of the first polarity capacitor C1 is electrically connected with the output cathode of the LED lamp.
The VG pin of the master control driving circuit 1 is electrically connected with the filter damping circuit 3. The VG pin of the master control driving circuit 1 is connected with the power input circuit to control the power supply to be powered on and started.
The VG pin of the main control driving circuit 1 is grounded through the first capacitor C8.
The VG pin of the main control driving circuit 1 is electrically connected to the inductor L1 through the second resistor R8 and the third resistor R4.
The HV pin of the master control driving circuit 1 is electrically connected to the voltage transformation circuit 4.
The VCC pin of the main control driving circuit 1 is grounded through a second polarity capacitor C10. The second polarity capacitor C10 is connected in parallel with a second capacitor C11.
The high-power-factor stroboflash-free LED driving power supply adopts a single-stage framework, and is not provided with a preceding-stage power factor correction circuit or a subsequent-stage stroboflash removal circuit. The high-power-factor stroboflash-free LED driving power supply in the technical scheme meets the requirements of high power factor and stroboflash-free, reduces the size of the power supply, reduces the cost and meets the development direction of resource conservation. The LED driving power supply meets EMC and lamp safety certification standards.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a single-stage framework high power factor does not have stroboscopic LED drive power supply which characterized in that: comprises a master control driving circuit, a rectification filter circuit, a filter damping circuit electrically connected with the rectification filter circuit, a voltage transformation circuit electrically connected with the filter damping circuit and a voltage stabilization constant current circuit electrically connected with the voltage transformation circuit, the master control driving circuit is respectively electrically connected with the filtering damping circuit and the voltage transformation circuit, the voltage stabilization constant current circuit comprises an MOS tube, a diode, a voltage stabilization diode, a first resistor and a first polarity capacitor, the grid electrode of the MOS tube and the anode of the voltage stabilizing diode are respectively and electrically connected with the anode of the first polarity capacitor, the cathode of the diode is electrically connected with the cathode of the voltage stabilizing diode, the drain of the MOS tube is electrically connected with the anode of the diode, the first resistor is respectively and electrically connected with the drain electrode of the MOS tube and the anode of the first polarity capacitor, the source electrode of the MOS tube is electrically connected with the output anode of the LED lamp, and the cathode of the first polarity capacitor is electrically connected with the output cathode of the LED lamp.
2. The single-stage architecture high power factor non-strobe LED driving power supply of claim 1, wherein: and the VG pin of the master control driving circuit is electrically connected with the filtering damping circuit.
3. The single-stage architecture high power factor non-strobe LED driving power supply of claim 2, wherein: the VG pin of the master control driving circuit is grounded through the first capacitor.
4. The single-stage architecture high power factor non-strobe LED driving power supply of claim 2, wherein: and a VG pin of the master control driving circuit is electrically connected with the inductor through a second resistor and a third resistor.
5. The single-stage architecture high power factor non-strobe LED driving power supply of claim 1, wherein: the HV pin of the master control driving circuit is electrically connected with the voltage transformation circuit.
6. The single-stage architecture high power factor non-strobe LED driving power supply of claim 1, wherein: and the VCC pin of the master control driving circuit is grounded through a second polarity capacitor.
7. The single-stage architecture high power factor non-strobe LED driving power supply of claim 6, wherein: and the second polarity capacitor is connected with a second capacitor in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022332166.7U CN212910143U (en) | 2020-10-20 | 2020-10-20 | Single-stage framework high-power-factor stroboflash-free LED driving power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022332166.7U CN212910143U (en) | 2020-10-20 | 2020-10-20 | Single-stage framework high-power-factor stroboflash-free LED driving power supply |
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| Publication Number | Publication Date |
|---|---|
| CN212910143U true CN212910143U (en) | 2021-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022332166.7U Active CN212910143U (en) | 2020-10-20 | 2020-10-20 | Single-stage framework high-power-factor stroboflash-free LED driving power supply |
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| Country | Link |
|---|---|
| CN (1) | CN212910143U (en) |
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2020
- 2020-10-20 CN CN202022332166.7U patent/CN212910143U/en active Active
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