CN203399341U - Novel LED lamp driving power supply - Google Patents
Novel LED lamp driving power supply Download PDFInfo
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- CN203399341U CN203399341U CN201320316923.9U CN201320316923U CN203399341U CN 203399341 U CN203399341 U CN 203399341U CN 201320316923 U CN201320316923 U CN 201320316923U CN 203399341 U CN203399341 U CN 203399341U
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Abstract
The utility model discloses a novel LED lamp driving power supply, including an electromagnetic compatibility filter circuit 1 for preventing lightning stroke and eliminating electromagnetic interference. The output terminal of the electromagnetic compatibility filter circuit 1 is connected with a bridge type rectification circuit 2 for transforming AC to half-sine AC; the output terminal of the bridge type rectification circuit 2 is connected with a high frequency transformation circuit 3; the output terminal of the high frequency transformation circuit 3 is connected with an output rectification circuit 7 for transforming the AC processed by frequency conversion to DC; the output terminal of the output rectification circuit 7 is connected with an output filter circuit 8 for eliminating electromagnetic interference of the DC after rectification; the high frequency transformation circuit 3 is also connected with a switch tube circuit 4 for controlling the high frequency transformation circuit 3 to store or release energy; the switch tube circuit 4 is connected with a sampling circuit 5 for detecting the energy release state information of the high frequency transformation circuit 3; the system is also connected with a control circuit 6 for controlling the switch tube circuit 4 to control the high frequency transformation circuit 3 according to the feedback signals of the sampling circuit 5; and the control circuit 6 is connected with the bridge type rectification circuit 2.
Description
[technical field]
The utility model relates to a kind of Novel LED light driving power.
[background technology]
Now, the application of LED lamp is more and more extensive.LED light fixture manufacturer is for the overall appearance of product structure, often driving power compact with LED lamp body structure design together with, and LED driving power life-span on the market generally also can not surpass 50,000 hours, this and the LED lamp pearl life-span of 70,000 to 100,000 hours differ greatly.Given this, determine that the energy-conservation and long-life key factor of LED light fixture is the driving power of LED lamp use.
And the restriction LED driving power life-span is the electrochemical capacitor that uses institute's driving power, under+60 ° of ambient temperature conditions of work, the life-span of the electrochemical capacitor that power supply is used probably only has several thousand hours, even if do not consider Cost Problems, significantly add high capacitance, select the electric capacity of best brand, the life-span generally can be over 50,000 hours yet.The vertical grand electric capacity in famous electrochemical capacitor brand Taiwan of take is example, and its general-40 are as follows in the time lifetime value that loads nominal load to+105 metric lattice electric capacity:
Life-span when capacitance temperature 65 is spent can only guarantee approximately 80,000 hours.
Life-span when capacitance temperature 75 is spent can only guarantee approximately 40,000 hours.
Life-span when capacitance temperature 85 is spent can only guarantee approximately 20,000 hours.
Life-span when capacitance temperature 95 is spent can only guarantee approximately 10,000 hours.
Life-span when capacitance temperature 105 is spent can only guarantee approximately 4,000 hours.
In sum, exploitation is outstanding aobvious important and necessary under the social theme of energy-conserving and environment-protective instantly without the LED driving power of electrochemical capacitor.
[utility model content]
The utility model has overcome the deficiency of above-mentioned technology, a kind of Novel LED light driving power is provided, can realize the high-power LED illuminating lamp that drives 60W under the condition of not using electrochemical capacitor, both break through the short defect of electrochemical capacitor life, also improve capability correction factor and overall efficiency; Control circuit in the technical program, by gathering information in many ways, through integrated treatment, can be realized the reliability of the increased functionality application circuits such as constant current control, short-circuit protection; The driving power work that utilizes the technical program to make is continual and steady, energy-conserving and environment-protective, effective, have simple in structure, use safety, attractive and durable feature.
For achieving the above object, the utility model has adopted following technical proposal:
A kind of Novel LED light driving power, include for preventing thunderbolt and the Electro Magnetic Compatibility filter circuit 1 of eliminating electromagnetic interference, described Electro Magnetic Compatibility filter circuit 1 output is connected with the bridge rectifier 2 exchanging for alternating current being converted to semifocal chord ripple, described bridge rectifier 2 outputs are connected with high frequency transforming circuit 3, described high frequency transforming circuit 3 outputs are connected with for the alternating current after frequency conversion being converted to galvanic output rectification circuit 7, described output rectification circuit 7 outputs are connected with for eliminating the output filter circuit 8 of direct current electromagnetic interference after rectification, described high frequency transforming circuit 3 is also connected with the switching tube circuit 4 for controlling its storage power or releasing energy, described switching tube circuit 4 is connected with the sample circuit 5 for detection of high frequency transforming circuit 3 energy release condition information, thereby described this system is also connected with for come control switch pipe circuit 4 to control the control circuit 6 of high frequency transforming circuit 3 according to the feedback signal of sample circuit 5, described control circuit 6 is connected with bridge rectifier 2.
Described Electro Magnetic Compatibility filter circuit 1 comprises piezo-resistance and filter inductance L101 and L105, 3. described filter inductor L101 pin is connected with live wire, 1. described filter inductor L101 pin is connected with zero line, between live wire and ground wire, be connected with piezo-resistance R103, between live wire and zero line, be connected with piezo-resistance R101, between zero line and ground wire, be connected with piezo-resistance R102, 1. 2. described filter inductor L101 pin be connected with filter inductor L105 pin, 3. 4. described filter inductor L101 pin be connected with filter inductor L105 pin, filter inductance L101 pin 2. and pin be connected with piezo-resistance R104 between 4., described piezo-resistance R104 is connected in parallel to by resistance R 105 and resistance R 106 and forms series circuit, describedly by resistance R 105 and resistance R 106, form series circuit and be connected in parallel to capacitor C 104, filter inductance L105 pin 2. and pin be connected with capacitor C 10 between 4.
Described bridge rectifier 2 includes bridge rectification device and electric capacity, 4. an input of described bridge rectification device D106 is connected with filter inductance L105 pin, 2. described another input of bridge rectification device D106 is connected with filter inductance L105 pin, described bridge rectification device D106 two outputs are connected with the start end of control circuit 6 by dividing potential drop current-limiting circuit, described dividing potential drop current-limiting circuit is provided with thin-film capacitor C106 in connecting, and described thin-film capacitor C106 is connected with bridge rectification device two outputs.
Described high frequency transforming circuit 3 includes transformer T101, described transformer T101 input winding one end is connected with bridge rectifier 2, the described transformer T101 input winding other end is connected with the test side of control circuit 6 by switching tube circuit 4, described transformer T101 output winding is connected with output rectification circuit 7, described transformer T101 is provided with auxiliary winding L, and described auxiliary winding L is connected with the feedback end of control circuit 6.
In described switching tube circuit 4, be provided with field effect transistor T102 and voltage-stabiliser tube D4, described field effect transistor T102 gate terminal is connected with control circuit 6, described field effect transistor T102 drain electrode end is connected with high frequency transforming circuit 3, described field effect transistor T102 source terminal is connected with sampling point road 5, described voltage-stabiliser tube D4 positive terminal is connected with field effect transistor T102 source terminal, and described voltage-stabiliser tube D4 negative pole end is connected with field effect transistor T102 drain electrode end.
Described sample circuit 5 is formed in parallel by a plurality of resistance, and described sample circuit 5 is connected between switching tube circuit 4 field effect transistor T102 source terminals and ground.
In described control circuit 6, be provided with controller U101 and resistance, described controller U101 test side is connected with switching tube circuit 4 field effect transistor T102 gate terminal by resistance R 112, described controller U101 start end is connected with bridge rectifier 2,4. described controller U101 pin is the feedback end of control circuit 6, in described controller, reference voltage is set.
The beneficial effects of the utility model are:
(1) do not use electrochemical capacitor, and have high reliability, the life-span of driving power and the life-span of LED can be suitable.
(2) will have high efficiency: LED is energy-conserving product, and it is high that the efficiency of driving power is wanted.For power supply, be arranged on the structure in light fixture, particularly important.Because the luminous efficiency of LED declines along with the rising of LED temperature, so the heat radiation of LED is extremely important.The efficiency of power supply is high, and its dissipation power is little, just little in light fixture internal heat generation amount, has also just reduced the Warm liter of light fixture, favourable to delaying the light decay of LED.
(3) to there is surge protection function: the ability of LED antisurge is poor, particularly anti-reverse voltage ability.The protection of strengthening this respect is also very important.Some LED lamp is contained in open air, as LED street lamp.Due to the induction that opening of electrical network load got rid of and be struck by lightning, from network system, can invade various surges, some surge can cause the damage of LED.Therefore LED driving power will have the intrusion that suppresses surge, the not impaired ability of protection LED.
(4) to there is overcurrent, overvoltage, short circuit, overheat protector function.
[accompanying drawing explanation]
Fig. 1 is the utility model structural representation;
Fig. 2 is circuit theory diagrams of the present utility model.
[embodiment]
Below in conjunction with accompanying drawing and execution mode of the present utility model, be described in further detail:
As shown in Figure 1, a kind of Novel LED light driving power, include for preventing thunderbolt and the Electro Magnetic Compatibility filter circuit 1 of eliminating electromagnetic interference, described Electro Magnetic Compatibility filter circuit 1 output is connected with the bridge rectifier 2 exchanging for alternating current being converted to semifocal chord ripple, described bridge rectifier 2 outputs are connected with high frequency transforming circuit 3, described high frequency transforming circuit 3 outputs are connected with for the alternating current after frequency conversion being converted to galvanic output rectification circuit 7, described output rectification circuit 7 outputs are connected with for eliminating the output filter circuit 8 of direct current electromagnetic interference after rectification, described high frequency transforming circuit 3 is also connected with the switching tube circuit 4 for controlling its storage power or releasing energy, described switching tube circuit 4 is connected with the sample circuit 5 for detection of high frequency transforming circuit 3 energy release condition information, thereby described this system is also connected with for come control switch pipe circuit 4 to control the control circuit 6 of high frequency transforming circuit 3 according to the feedback signal of sample circuit 5, described control circuit 6 is connected with bridge rectifier 2.
Described control circuit 6 middle controllers arrange reference voltage.
In described bridge rectifier 2, capacitor C 106 is thin-film capacitor.
As shown in Figure 2, the single-ended reverse exciting isolation type switching power supply circuit that case study on implementation adopts, input can be wide voltage (90Vac is to 265Vac) input, by the conversion of each circuit, finally obtains the output of constant current voltage limiting, can drive the high-power LED illuminating lamp of 60W.
Input piezo-resistance R101-R103 in parallel wherein, to prevent thunderbolt, filter inductance L101, L105 and X capacitor C 104, C105 play the effect that improves Electro Magnetic Compatibility filtering (EMC), wherein x electric capacity is used in power-supply filter, play power filter effect, differential mode interference is strobed.; Rectifying device D106 will exchange conversion class semifocal chord wave voltage, this voltage is connected to the little thin-film capacitor C106 of capacity, cancel the electrochemical capacitor using in traditional scheme, the output of rectifying device D106 is connected with the controller U101 of control circuit by dividing potential drop and current-limiting circuit, can make fast controller start after start; After U101 starts, just driving switch pipe T102 is open-minded, make the input winding of high frequency transformer T101 start storage power, induced voltage on the sample resistance of U101 collection simultaneously R114-R117 etc., the reference voltage of this voltage and U101 inside compares, thereby determines when and make switch transistor T 102 cut-off; After switch transistor T 102 cut-offs, output winding and the auxiliary winding of transformer T101 start to release energy, and the energy that output winding discharges has offered load by output diode D201, D202 and output inductor L206; Auxiliary winding feeds back to U101 in time by exergonic state information, and U101 carries out integrated treatment according to the information of the each side collecting, thereby driving switch pipe T102 is open-minded again, successively repeatedly.The implementation case can reach the circuit effect of expection.
Claims (7)
1. a Novel LED light driving power, it is characterized in that: include for preventing thunderbolt and the Electro Magnetic Compatibility filter circuit (1) of eliminating electromagnetic interference, described Electro Magnetic Compatibility filter circuit (1) output is connected with the bridge rectifier (2) exchanging for alternating current being converted to semifocal chord ripple, described bridge rectifier (2) output is connected with high frequency transforming circuit (3), described high frequency transforming circuit (3) output is connected with for the alternating current after frequency conversion being converted to galvanic output rectification circuit (7), described output rectification circuit (7) output is connected with for eliminating the output filter circuit (8) of direct current electromagnetic interference after rectification, described high frequency transforming circuit (3) is also connected with the switching tube circuit (4) for controlling its storage power or releasing energy, described switching tube circuit (4) is connected with the sample circuit (5) for detection of high frequency transforming circuit (3) energy release condition information, described this system is also connected with for carrying out control switch pipe circuit (4) according to the feedback signal of sample circuit (5) thereby the control circuit (6) of control high frequency transforming circuit (3), described control circuit (6) is connected with bridge rectifier (2).
2. a kind of Novel LED light driving power according to claim 1, it is characterized in that described Electro Magnetic Compatibility filter circuit (1) comprises piezo-resistance and filter inductance L101 and L105, 3. described filter inductor L101 pin is connected with live wire, 1. described filter inductor L101 pin is connected with zero line, between live wire and ground wire, be connected with piezo-resistance R103, between live wire and zero line, be connected with piezo-resistance R101, between zero line and ground wire, be connected with piezo-resistance R102, 1. 2. described filter inductor L101 pin be connected with filter inductor L105 pin, 3. 4. described filter inductor L101 pin be connected with filter inductor L105 pin, filter inductance L101 pin 2. and pin be connected with piezo-resistance R104 between 4., described piezo-resistance R104 is connected in parallel to by resistance R 105 and resistance R 106 and forms series circuit, describedly by resistance R 105 and resistance R 106, form series circuit and be connected in parallel to capacitor C 104, filter inductance L105 pin 2. and pin be connected with capacitor C 105 between 4..
3. a kind of Novel LED light driving power according to claim 2, it is characterized in that described bridge rectifier (2) includes bridge rectification device and electric capacity, 4. an input of described bridge rectification device D106 is connected with filter inductance L105 pin, 2. described another input of bridge rectification device D106 is connected with filter inductance L105 pin, described bridge rectification device D106 two outputs are connected with the start end of control circuit (6) by dividing potential drop current-limiting circuit, described dividing potential drop current-limiting circuit is provided with thin-film capacitor C106 in connecting, described thin-film capacitor C106 is connected with bridge rectification device two outputs.
4. a kind of Novel LED light driving power according to claim 1, it is characterized in that described high frequency transforming circuit (3) includes transformer T101, described transformer T101 input winding one end is connected with bridge rectifier (2), the described transformer T101 input winding other end is connected with the test side of control circuit (6) by switching tube circuit (4), described transformer T101 output winding is connected with output rectification circuit (7), described transformer T101 is provided with auxiliary winding (L), auxiliary winding of living in (L) is connected with the feedback end of control circuit (6).
5. a kind of Novel LED light driving power according to claim 4, it is characterized in that being provided with field effect transistor T102 and voltage-stabiliser tube D4 in described switching tube circuit (4), described field effect transistor T102 gate terminal is connected with control circuit (6), described field effect transistor T102 drain electrode end is connected with high frequency transforming circuit (3), described field effect transistor T102 source terminal is connected with sampling point road (5), described voltage-stabiliser tube D4 positive terminal is connected with field effect transistor T102 source terminal, and described voltage-stabiliser tube D4 negative pole end is connected with field effect transistor T102 drain electrode end.
6. according to a kind of Novel LED light driving power described in claim 4 or 5, it is characterized in that described sample circuit (5) is formed in parallel by a plurality of resistance, described sample circuit (5) is connected between switching tube circuit (4) field effect transistor T102 source terminal and ground.
7. a kind of Novel LED light driving power according to claim 4, it is characterized in that being provided with controller U101 and resistance in described control circuit (6), described controller U101 test side is connected with switching tube circuit (4) field effect transistor T102 gate terminal by resistance R 112, described controller U101 start end is connected with bridge rectifier (2), 4. described controller U101 pin is the feedback end of control circuit (6), in described controller, reference voltage is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320316923.9U CN203399341U (en) | 2013-05-23 | 2013-05-23 | Novel LED lamp driving power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320316923.9U CN203399341U (en) | 2013-05-23 | 2013-05-23 | Novel LED lamp driving power supply |
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| Publication Number | Publication Date |
|---|---|
| CN203399341U true CN203399341U (en) | 2014-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320316923.9U Expired - Fee Related CN203399341U (en) | 2013-05-23 | 2013-05-23 | Novel LED lamp driving power supply |
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| Country | Link |
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| CN (1) | CN203399341U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105744436A (en) * | 2016-05-06 | 2016-07-06 | 梁镇杰 | Novel sound box |
-
2013
- 2013-05-23 CN CN201320316923.9U patent/CN203399341U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105744436A (en) * | 2016-05-06 | 2016-07-06 | 梁镇杰 | Novel sound box |
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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 |
Granted publication date: 20140115 Termination date: 20170523 |
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| CF01 | Termination of patent right due to non-payment of annual fee |