CN207560408U - A kind of circuit isolated form LED drive power - Google Patents
A kind of circuit isolated form LED drive power Download PDFInfo
- Publication number
- CN207560408U CN207560408U CN201721765373.3U CN201721765373U CN207560408U CN 207560408 U CN207560408 U CN 207560408U CN 201721765373 U CN201721765373 U CN 201721765373U CN 207560408 U CN207560408 U CN 207560408U
- Authority
- CN
- China
- Prior art keywords
- power supply
- led drive
- internally provided
- circuit
- isolated form
- 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
Landscapes
- Rectifiers (AREA)
Abstract
The utility model discloses a kind of circuit isolated form LED drive powers,Including power supply casing,Power supply casing is provided at both ends with conductive connection,Power supply casing is internally provided with electromagnetic isolation storehouse,Electromagnetic isolation storehouse is internally provided with one layer of insulating blanket,Insulating blanket is internally provided with copper wire woven layer,Power supply casing is internally provided with input interface,Input interface is connected with Single Stage PFC Converter in turn,Input filter and isolating transformer,There are two connectivity ports for isolating transformer setting,And connectivity port is connected separately with pwm chip and LED drive circuit,LED drive circuit is connected with output interface,By setting electro-magnetic screen layer in the shell of power supply,Inside and outside electromagnetic isolation is realized by copper wire woven layer,It avoids interfering with each other between power supply and external electromagnetic,Improve the stability of power supply,By the transformer winding inside Single Stage PFC Converter so as to change input current and input power,Improve the efficiency of transmission of power supply,It is worthy to be popularized.
Description
Technical field
The utility model is related to driving power technical field, specially a kind of circuit isolated form LED drive power.
Background technology
LED power driving is the electric pressure converter that power supply supply is converted to specific voltage and current so that LED to be driven to shine.
Under normal conditions：It is high that the input of LED drive power includes high pressure industrial frequency AC (i.e. alternating current), low-voltage direct, high voltage direct current, low pressure
Frequency exchange (output of such as electronic transformer).And the output of LED drive power is then most of for that can become with LED forward drop value
Change and change the DC electric current source of voltage.
There are two types of type of drive is passed through now：One is a constant pressure source supplies multiple constant-current sources, each constant-current source is independent
It powers to every paths of LEDs.This mode, combination is flexible, and LED failure, does not influence the work of other LED, but cost can be slightly higher all the way
A bit.Another kind is direct constant current-supplying, and LED serial or parallel connections are run.Its advantages of is more at low cost, but flexibility is poor,
Also to solve the problem of that some LED failure does not influence other LED operations.
Application No. is CN201520518648.8, a kind of isolated LED spotlight drive electric power unit of entitled constant current
Utility model patent, including rectification circuit, filter circuit, RC absorbing circuits, isolation constant-current driven chip and transformer, rectified current
The input termination alternating current on road, the output terminal of rectification circuit are connected with the input terminal of filter circuit, the output terminal difference of filter circuit
With RC absorbing circuits, constant-current driven chip is isolated, transformer is connected, RC absorbing circuits by first resistor, second resistance, third electricity
Son, the first capacitance and the first diode are formed, and the first capacitance, first resistor simultaneously connect, and second resistance and 3rd resistor simultaneously connect, and connect
Rear first resistor, the first capacitance and second resistance, 3rd resistor and the first diode after connecing are sequentially connected in series, and RC absorbs
Circuit respectively with transformer primary side main winding, constant-current driven chip be isolated be connected, transformer auxiliary winding and filter circuit it is defeated
Outlet is connected, and transformer secondary winding is attempted by the positive and negative grade both ends of LED spotlight, and the utility model overall dimensions are small, and performance is excellent
Good, constant current accuracy is high.
But when in use, capacitance voltage is easily excessively high in circuit, and efficiency of transmission is caused to reduce, and uses for a long time
Many loss of power are brought, therefore devise a kind of circuit isolated form LED drive power.
Invention content
In order to overcome the shortcomings of prior art, the utility model provides a kind of circuit isolated form LED drive power, energy
It is effective to solve the problems, such as that background technology proposes.
Technical solution is used by the utility model solves its technical problem：
A kind of circuit isolated form LED drive power, including power supply casing, the power supply casing is provided at both ends with conduction and connects
Line, the power supply casing are internally provided with electromagnetic isolation storehouse, and the electromagnetic isolation storehouse is internally provided with one layer of insulating blanket, described
Insulating blanket is internally provided with copper wire woven layer, and the power supply casing is internally provided with input interface, and the input interface is successively
Single Stage PFC Converter, input filter and isolating transformer are connected with, the isolating transformer is set there are two connectivity port,
And connectivity port is connected separately with pwm chip and LED drive circuit, the LED drive circuit is connected with output interface.
Further, the insulating blanket is made of polyurethane material, and the insulating blanket lower end is provided with thermal conductive silicon
Lipid layer.
Further, high voltage startup reactor is provided between the pwm chip and input filter.
Further, the isolating transformer uses PQ4040 type high frequency transformers, and voltage ratio is 20：1, and winding shape
Formula uses three winding form.
Further, the pwm chip uses ME8206 type power modulation chips, source current 2A, and volume
Power is determined for 100W.
Compared with prior art, the beneficial effects of the utility model are：
(1) the utility model is realized interior by setting electro-magnetic screen layer in the shell of power supply by copper wire woven layer
Outer electromagnetic isolation avoids interfering with each other between power supply and external electromagnetic, improves the stability of power supply；
(2) the utility model in power source internal by setting Single Stage PFC Converter, inside Single Stage PFC Converter
Transformer winding improves the efficiency of transmission of power supply, is worthy to be popularized so as to change input current and input power.
Description of the drawings
Fig. 1 is the overall structure diagram of the utility model；
Fig. 2 is that the internal structure of the utility model connects block diagram；
Fig. 3 is the circuit diagram of the Single Stage PFC Converter of the utility model.
Figure label：
1- power supply casings, 2- conductive connections, 3- electromagnetic isolations storehouse, 4- insulating blankets, 5- copper wire woven layers, 6- inputs connect
Mouthful, 7- Single Stage PFC Converters, 8- input filters, 9- isolating transformers, 10- connectivity ports, 11-PWM control chips, 12-
LED drive circuit, 13- output interfaces, 14- thermal grease layers, 15- high voltage startup reactors.
Specific embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
It clearly and completely describes, it is clear that the described embodiments are only a part of the embodiments of the utility model rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without making creative work
All other embodiments obtained shall fall within the protection scope of the present invention.
As shown in Figure 1 to Figure 3, the utility model provides a kind of circuit isolated form LED drive power, including power supply casing
1, the power supply casing 1 is provided at both ends with conductive connection 2, and the power supply casing 1 is internally provided with electromagnetic isolation storehouse 3, the electricity
Magnetic isolation storehouse 3 is internally provided with one layer of insulating blanket 4, and the insulating blanket 4 is internally provided with copper wire woven layer 5, the power supply
Casing 1 is internally provided with input interface 6, the input interface 6 be connected in turn Single Stage PFC Converter 7, input filter 8 with
Isolating transformer 9, the setting of isolating transformer 9 is there are two connectivity port 10, and connectivity port 10 is connected separately with PWM controls
Chip 11 and LED drive circuit 12, the LED drive circuit 12 are connected with output interface 13；
When in use, when power work, inner modulation is by chip controls, easily to the utility model
By extraneous electromagnetic interference, the copper wire woven layer 5 set by 4 inside of insulating blanket forms one layer of electromagnetic isolation well
Situations such as layer, the electromagnetic interference between blocking is inside and outside increases the stability that power supply exports, avoids the occurrence of power-supply fluctuation；
When the utility model at work, alternating current is accessed by input interface 6, under the action of monopole pfc converter 7, such as
Shown in Fig. 3, when S is turned off, it is added in inductance LBOn backward voltage be VcAnd N2On the sum of voltage subtract input voltage, reduce
Input power, so as to further reduced Vc, meanwhile, power factor is also improved, increases the efficiency of power delivery, then
Electric current filters out useless electric signal by input filter 8, into the isolating transformer 9 of high frequency, is divided electric current by winding
Into two-way, all the way by the modulation control of PWM controller 11, another way then exports, and is energized for LED.
As preferred embodiment, the insulating blanket 4 is made of polyurethane material, 4 lower end of insulating blanket
Thermal grease layer 14 is provided with, the thermal diffusivity of equipment is improved, heat build-up is avoided power supply architecture to be caused to damage on copper wire.
As preferred embodiment, high voltage startup electricity is provided between the pwm chip 11 and input filter 8
Anti- device 15, improves high voltage protective, and in case of high pressures, reactor starting so as to be effectively protected power source internal structure, is kept away
Exempt from high-voltage breakdown internal component.
It should be added that the isolating transformer 9 uses PQ4040 type high frequency transformers, voltage ratio is 20：
1, and winding configuration uses three winding form.
It should be added that the pwm chip 11 uses ME8206 type power modulation chips, source current
For 2A, and rated power is 100W.
In conclusion the utility model is mainly characterized by：
(1) the utility model is realized interior by setting electro-magnetic screen layer in the shell of power supply by copper wire woven layer
Outer electromagnetic isolation avoids interfering with each other between power supply and external electromagnetic, improves the stability of power supply；
(2) the utility model in power source internal by setting Single Stage PFC Converter, inside Single Stage PFC Converter
Transformer winding improves the efficiency of transmission of power supply, is worthy to be popularized so as to change input current and input power.
It is obvious to a person skilled in the art that the utility model is not limited to the details of above-mentioned exemplary embodiment, and
And in the case of the spirit or essential attributes without departing substantially from the utility model, it can realize that this practicality is new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this practicality is new
The range of type is indicated by the appended claims rather than the foregoing description, it is intended that by containing in the equivalent requirements of the claims is fallen
All changes in justice and range are embraced therein.Any reference numeral in claim should not be considered as limitation
Involved claim.
Claims (5)
1. a kind of circuit isolated form LED drive power, including power supply casing (1), the power supply casing (1) is provided at both ends with conduction
Wiring (2), it is characterised in that：The power supply casing (1) is internally provided with electromagnetic isolation storehouse (3), and the electromagnetic isolation storehouse (3) is interior
Portion is provided with one layer of insulating blanket (4), and the insulating blanket (4) is internally provided with copper wire woven layer (5), the power supply casing
(1) input interface (6) is internally provided with, the input interface (6) is connected with Single Stage PFC Converter (7), input filter in turn
(8) with isolating transformer (9), isolating transformer (9) setting is there are two connectivity port (10), and connectivity port (10) are respectively
Pwm chip (11) and LED drive circuit (12) are connected with, the LED drive circuit (12) is connected with output interface (13).
2. a kind of circuit isolated form LED drive power according to claim 1, it is characterised in that：The insulating blanket (4)
It is made of polyurethane material, insulating blanket (4) lower end is provided with thermal grease layer (14).
3. a kind of circuit isolated form LED drive power according to claim 1, it is characterised in that：The pwm chip
(11) high voltage startup reactor (15) is provided between input filter (8).
4. a kind of circuit isolated form LED drive power according to claim 1, it is characterised in that：The isolating transformer
(9) using PQ4040 type high frequency transformers, voltage ratio is 20：1, and winding configuration uses three winding form.
5. a kind of circuit isolated form LED drive power according to claim 1, it is characterised in that：The pwm chip
(11) it is 100W using ME8206 type power modulation chips, source current 2A, and rated power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721765373.3U CN207560408U (en) | 2017-12-18 | 2017-12-18 | A kind of circuit isolated form LED drive power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721765373.3U CN207560408U (en) | 2017-12-18 | 2017-12-18 | A kind of circuit isolated form LED drive power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207560408U true CN207560408U (en) | 2018-06-29 |
Family
ID=62664616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721765373.3U Expired - Fee Related CN207560408U (en) | 2017-12-18 | 2017-12-18 | A kind of circuit isolated form LED drive power |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207560408U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109041343A (en) * | 2018-08-06 | 2018-12-18 | 广东德洛斯照明工业有限公司 | A kind of LED drive circuit of low electromagnetic |
-
2017
- 2017-12-18 CN CN201721765373.3U patent/CN207560408U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109041343A (en) * | 2018-08-06 | 2018-12-18 | 广东德洛斯照明工业有限公司 | A kind of LED drive circuit of low electromagnetic |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102437744B (en) | Self current-balancing power supply circuit with multiplexed output | |
| CN109618468A (en) | A kind of LED lamp circuit with intelligent control function | |
| CN207560408U (en) | A kind of circuit isolated form LED drive power | |
| CN102420521B (en) | Capacitor and inductor conjugated voltage-dropping circuit | |
| CN107947591A (en) | Isolated power supply module of railway locomotive vehicle electronic device | |
| CN103716960A (en) | Drive circuit for high-power LED light source | |
| CN206775388U (en) | One kind isolation digital micro power supply | |
| CN203691688U (en) | Drive circuit for large-power LED light source | |
| CN206962703U (en) | Vehicle-mounted DC/DC changer systems | |
| CN205753990U (en) | A kind of high isolation DC-DC power module | |
| CN205407375U (en) | Charger | |
| CN211791304U (en) | Isolation control low standby power consumption electronic type single live wire switch | |
| CN204696942U (en) | Centralized alternating current-direct current dual input d. c. remote power supply administration end system | |
| CN107017773A (en) | Vehicle-mounted DC/DC changer systems | |
| CN208923892U (en) | A kind of single phase transformer realizes the shared circuit of more mouthfuls of multi-protocols fast charge power | |
| CN209046344U (en) | A kind of realization double quick fills power and shares smart allocation circuit | |
| CN206250967U (en) | The Switching Power Supply of anti-electromagnetism Interference | |
| CN207584720U (en) | A kind of inverse-excitation type LED drive power | |
| CN206452309U (en) | A kind of supply convertor | |
| CN207527521U (en) | A kind of outdoor water-proof type LED drive power | |
| CN205724207U (en) | A kind of television set and Set Top Box combined control equipment | |
| CN104796016A (en) | High-voltage power tube and power source module | |
| CN204481708U (en) | A kind of high-voltage power pipe and power module | |
| CN206713124U (en) | LED commercial lighting HVDC hvdc circuits | |
| CN221283037U (en) | Single-chip single-transformer isolation and non-isolation double-circuit output circuit |
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: 20180629 Termination date: 20181218 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |