CN209517578U - A kind of Simple LED lamp silk lamp light modulation route - Google Patents
A kind of Simple LED lamp silk lamp light modulation route Download PDFInfo
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- CN209517578U CN209517578U CN201822102075.7U CN201822102075U CN209517578U CN 209517578 U CN209517578 U CN 209517578U CN 201822102075 U CN201822102075 U CN 201822102075U CN 209517578 U CN209517578 U CN 209517578U
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- 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
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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Abstract
The utility model discloses a kind of Simple LED lamp silk lamps to dim route, including overcurrent protective switch, high-voltage rectifier and DX3563 integration module, the output end of the overcurrent protective switch is connect with the input terminal of the high-voltage rectifier, the output end of the high-voltage rectifier is connect with high-pressure filter circuit, the high-pressure filter circuit includes the first inductance, first capacitor and the second capacitor, the input terminal of first inductance is connect with the input terminal of the first capacitor, the output end of first inductance is connect with the input terminal of second capacitor, the utility model can be by low power filament lamp, light intensity is adjusted to faint, meet the needs of special occasions, it can more power saving；External various types of light modulators can be matched, dimming process does not flash；It can be general with 110V/220V using voltage, it should which region is more extensive；With output open circuit/short-circuit protection, over-temperature protection, chip under-voltage protection, route is simple, low in cost, easy to operate.
Description
Technical field
The utility model relates to technical field of lighting fixtures, specially a kind of Simple LED lamp silk lamp dims route.
Background technique
LED illumination popularization and application brings huge energy conservation contribution for society.At present LED filament lamp be generally with small-power,
Based on non-dimmable, however existing LED filament, suitable intensity of illumination, and cost can not be selected according to different light scenes
Height, complicated for operation, production efficiency is low, has raised enterprise's production cost.In order to the development in market of following up, for this purpose, proposing
A kind of Simple LED lamp silk lamp light modulation route.
Utility model content
The purpose of this utility model is to provide a kind of Simple LED lamp silk lamps to dim route, to solve above-mentioned background technique
The problem of middle proposition.
To achieve the above object, the utility model provides the following technical solutions: a kind of Simple LED lamp silk lamp light modulation route,
Including overcurrent protective switch, high-voltage rectifier and DX3563 integration module, the output end of the overcurrent protective switch with it is described
The input terminal of high-voltage rectifier connects, and the output end of the high-voltage rectifier is connect with high-pressure filter circuit, the high pressure
Filter circuit includes the first inductance, first capacitor and the second capacitor, input terminal and the first capacitor of first inductance
Input terminal connection, the output end of first inductance are connect with the input terminal of second capacitor, and first capacitor and the second electricity
Hold parallel with one another, the high-pressure filter circuit is connected with the third capacitor being serially connected and first resistor, the third capacitor
Input terminal is connect with the second inductance, output filter capacitor and second resistance, and the output end and diode of second inductance are just
End connection, the negative terminal of the diode connect with one end of the output filter capacitor, second resistance and the 4th capacitor, and described the
The output end of two inductance is connect with the DRAIN foot of the DX3563 integration module, the negative terminal of the 4th capacitor with it is described
The GND foot of DX3563 integration module connects, the CS foot of the DX3563 integration module respectively with the 5th capacitor, the 4th resistance one
The VIN foot of end connection, the DX3563 integration module is connect by 3rd resistor with one end of the second resistance, and described second
The both ends of resistance are connected with the positive and negative both ends of LED light, and the VDD foot of the DX3563 integration module and the anode of the 6th capacitor connect
It connects.
It is preferred: high-voltage ac power, the mistake are connected on the left of the overcurrent protective switch and high-voltage rectifier
The end L of the input terminal and high-voltage ac power that flow protective switch connects, the N-terminal of the high-voltage rectifier and the high-voltage rectifying
Circuit connection.
Preferred: the high-voltage rectifier is rectifier bridge stack DB1, and rectifier bridge stack DB1 and high-voltage ac power is defeated
Outlet is electrically connected.
Preferred: the overcurrent protective switch is protective tube/PTC thermistor.
It is preferred: the first resistor, the 5th capacitor, the 4th resistance and the 6th capacitor the other end be grounded.
Compared with prior art, the utility model has the beneficial effects that the utility model can by low power filament lamp,
Light intensity is adjusted to faint, meets the needs of special occasions (Crystal lamp decoration, bedside lamp etc.), it can more power saving；It can match outer
The various types of light modulators in portion, dimming process do not flash；It can be general with 110V/220V using voltage, it should which region is more extensive；Tool
There are output open circuit/short-circuit protection, over-temperature protection, chip under-voltage protection, route is simple, and it is low in cost, it is easy to operate.
Detailed description of the invention
Fig. 1 is the floating ground structure VDD power supply mode circuit diagram of the utility model；
Fig. 2 is the total ground structure VDD power supply mode circuit diagram of the utility model；
Current diagram when Fig. 3 is the MOSFET conducting of the utility model；
Fig. 4 is the LED open circuit constantly self-lock protection line map of the utility model；
Fig. 5 is the feedback profile figure of junction temperature temperature and output current ratio inside the DX3562 of the utility model；
Fig. 6 is that the floating ground structure of the utility model refers to application drawing；
Fig. 7 is the IC internal framework figure of the utility model；
Fig. 8 is the circuit diagram of the utility model；
Fig. 9 is the electrical principle frame diagram of the utility model.
In figure: 1, overcurrent protective switch；2, high-voltage rectifier；3, the first inductance；4, first capacitor；5, the second capacitor；
6, third capacitor；7, first resistor；8, DX3563 integration module；9, the second inductance；10, diode；11, output filter capacitor；
12, second resistance；13, the 4th capacitor；14,3rd resistor；15, the 5th capacitor；16, the 4th resistance；17, the 6th capacitor；18,
LED light.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, 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 embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Embodiment
Fig. 1-9 is please referred to, the utility model provides a kind of technical solution: a kind of Simple LED lamp silk lamp light modulation route, including
Overcurrent protective switch 1, high-voltage rectifier 2 and DX3563 integration module 8, the output end of the overcurrent protective switch 1 with it is described
The input terminal of high-voltage rectifier 2 connects, and the output end of the high-voltage rectifier 2 is connect with high-pressure filter circuit, the height
Filters pressing wave circuit includes the first inductance 3, first capacitor 4 and the second capacitor 5, the input terminal of first inductance 3 and described first
The input terminal of capacitor 4 connects, and the output end of first inductance 3 is connect with the input terminal of second capacitor 5, and first capacitor
4 and second capacitor 5 it is parallel with one another, the high-pressure filter circuit is connected with the third capacitor 6 being serially connected and first resistor 7, institute
The input terminal for stating third capacitor 6 is connect with the second inductance 9, output filter capacitor 11 and second resistance 12, second inductance 9
Output end is connect with the anode of diode 10, the negative terminal of the diode 10 and the output filter capacitor 11, second resistance 12
It is connected with one end of the 4th capacitor 13, the DRAIN foot of the output end of second inductance 9 and the DX3563 integration module 8 connects
It connects, the negative terminal of the 4th capacitor 13 is connect with the GND foot of the DX3563 integration module 8, the DX3563 integration module 8
CS foot connect respectively with one end of the 5th capacitor 15, the 4th resistance 16, the VIN foot of the DX3563 integration module 8 passes through the
Three resistance 14 are connect with one end of the second resistance 12, and the both ends of the second resistance 12 are connected with positive and negative the two of LED light 18
End, the VDD foot of the DX3563 integration module 8 are connect with the anode of the 6th capacitor 17.
Specific in the present embodiment: the left side of the overcurrent protective switch 1 and high-voltage rectifier 2 is connected to high pressure friendship
Galvanic electricity source, the input terminal of the overcurrent protective switch 1 and the end L of high-voltage ac power connect, the N of the high-voltage rectifier 2
End is connect with the high-voltage rectifier 2.
Specific in the present embodiment: the high-voltage rectifier 2 is rectifier bridge stack DB1, and rectifier bridge stack DB1 and high pressure
The output end of AC power source is electrically connected.
Specific in the present embodiment: the overcurrent protective switch is protective tube/PTC thermistor.
It is specific in the present embodiment: the first resistor 7, the 5th capacitor 15, the 4th resistance 16 and the 6th capacitor 17 it is another
One end is grounded.
The implementation method of the utility model:
(1) starting and power supply supply
In low system material cost and compact structure, DX3562 is recommended to be total to ground structure, the reference of reference chip scheme is answered
With figure, there are starting and normal power supply in the end LED+ to the resistance between chip VIN pin, when DX3562 starts, by this electricity
The capacitor charging to VDD pin to ground is hindered, after voltage is charged to VDD_ON threshold value, DX3562 starts to start and controls inside
Switch mosfet signal, after starting, the supplying resistance for being connected to LED+ continues to provide the supply voltage that chip works normally, such as
For fruit when low angle dims, the appearance of VDD operating voltage is not able to satisfy chip power demands, and adjustable resistance and use are floating
Ground structure to provide power supply to chip, while system transfer efficiency can be improved.Fig. 1 and Fig. 2 is two kinds of different suppliers of electricity respectively
The application drawing of formula.
When failure condition occurs, such as open circuit and short-circuit protection, DX3562 stop working until vdd voltage is lower than VUVLO
Threshold value, chip restore to work normally again.
(2) peak value comparison method
DX3562 has a high precision peak current detector, when CS pin voltage reaches VCS_LIMIT threshold value, DX3562
Internal MOSFET is turned off, after the completion of inductance energy release, the voltage in the drain electrode of MOSFET can generate oscillation, and chip detects
When oscillating voltage is to minimum, chip opens internal source drive MOSFET again, and exporting electric current in this way can be with accurate constant current
Control, following formula is the calculation formula of peak point current: IPK=VCS-LIMIT/RSense=0.52/Rsense
In total ground structure, the capacitor of chip CS pin parallel connection can participate in influence inductance and release energy the time to output, electricity
The capacitance of sense sensibility reciprocal and CS capacitor may be adjusted to suitable energy release time.
(3) lead-edge-blanking (LEB)
In practical applications, because having parasitic capacitance in inductance and built-in MOSFET, peak current can be generated in switch,
In order to avoid the protection of switching spikes false triggering chip, lead-edge-blanking time (LEB) built in DX3562, Fig. 3 are that MOSFET is led
Current diagram when logical, within the preset blanking time, chip does not have overcurrent protection function.
(4) short-circuit protection (SCP)
When LED is exported, and short circuit occurs, inductance energy release conditions can be detected to extend built-in switch pipe inside DX3562
Turn-off time, such input-output power can be limited to safe range.After output short-circuit removes, chip restores normal work
Make.
(5) dump load function is dimmed
In order to reach superior light modulator compatibility, especially digital type light-adjusting device, usually when very little dims angle,
Need an additional load current that light modulator is maintained to work normally, DX3562 is integrated with a unique active light modulation and lets out
Discharge stream loading functional adaptively generates one and lets out when the phase and amplitude variation of chip detection dimmer output voltage
Load is put, to maintain light modulator minimum working current, improves the starting current of leading edge dimmer in this way, while after also improving
Along the maintenance current characteristics of light modulator.DX3562 works in dump load mode phases, and main inductance work is slight continuous
Conduction mode.
(6) open-circuit-protection (OVP)
DX3562 is for optionally using open circuit protecting function: self- recoverage mode, lock built in different designs demand
Firmly mode and without open-circuit-protection mode.
Fig. 2 route DX3562 is on total ground in application, being connected to the resistance at the end LED+ by VIN to detect the change of output voltage
Change, when LED open circuit, when flowing through the electric current of VIN and being more than default IVIN threshold value, chip can turn off built-in MOSFET, when LED again
After in connection, DX3562 restores to work normally.
Fig. 4 is that DX3562 chip realizes the self-locking mode protection of open circuit by the resistance between being connected to VIN and DRAIN pin
Function, when LED opens a way, chip detects the variation of built-in MOSFET drain terminal voltage to turn off MOSFET, and needs
It after AC input shutdown, then powers again, chip can just resume work again.
DX3562 can also be applied in no open-circuit-protection design requirement, be avoided as caused by unknown external condition accidentally
Open circuit protecting function is triggered, as flashing light phenomenon can suggest chip VIN in moist and processing technology materials'use lack of standardization
Pin direct short-circuit makes chip open-circuit-protection fail to ground.
(7) feedback protection is overheated
DX3562 integrates high temperature feedback protection function, after chip detects that abnormal raising occurs for ambient temperature
(> TOTP_FB), chip can accordingly decrease LED output electric current according to internal preset ratio and limit input power, to avoid
Temperature continues abnormal raising.Fig. 5 is the feedback profile of junction temperature temperature and output current ratio inside DX3562.
(8) inductance selection
In non-isolated high power applications, the peak point current of inductance and the turn-on and turn-off time of switch determine inductance sensibility reciprocal
Range, low EMI switch noise in order to obtain, minimum frequency of operation needs carefully select, and integrated structure size selection one is most
Suitable inductance specification, following formula are to go up and down the inductance sensibility reciprocal expression formula of laminated structure:
After inductance sensibility reciprocal is selected, the calculating of most ringlet number can refer to following formula:
Nmin=L.IPK/Ae.Bm
(9) ground structure application is floated
When design needs high system transfer efficiency and minimum peripheral cell and perfect protection demand, DX3562 can
To be applied to floating ground structure, Fig. 6 is floating ground structure with reference to application drawing.
When compact LED drives and designs, low electromagnetic, steady operation loop and thermal parameter can all influence DX3562
Working performance, listed related wiring criterion below
A: chip power supply and reference capacitance are as close to VDD, VREF pin.
B: chip CS pin is high-frequency node, and track lengths are as short as possible and wide.
C: low EMI design in order to obtain, guarantee as far as possible altogether the short cabling of major loop in ground structure (BD+ → inductance →
DX3562Drainpin→CSpin→BD-)；Major loop in floating ground structure ((BD+ → DX3562Drainpin → CSpin →
IC_GND→inductor→LED+→LED-→BD-))
D: exchange cabling is away as far as possible dc switch circuit.
DX3562 is non-isolation structure thyristor regulating optical controller, and integrated phase detection exports to be adaptively adjusted LED
Electric current.It can be used for buck and step-down/up type topology, and realize high power correction and output electric current current constant control function.
DX3562 works in critical conduction and micro- continuous conduction mode, optimizes light modulator compatibility and low EMI noise performance.DX3562
Integrated high voltage MOSFET and a small number of peripheral cells, can be very suitable for low system cost at four pin control structures, compact
Light modulation driving application.DX3562 integrates a variety of protected modes: overcurrent protection, UVLO, high temperature feedback, output short-circuit and optional open circuit
Defencive function etc..
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (5)
1. a kind of Simple LED lamp silk lamp dims route, including overcurrent protective switch (1), high-voltage rectifier (2) and DX3563 collection
At module (8), the output end of the overcurrent protective switch (1) is connect with the input terminal of the high-voltage rectifier (2), feature
Be: the output end of the high-voltage rectifier (2) is connect with high-pressure filter circuit, and the high-pressure filter circuit includes the first electricity
Feel (3), first capacitor (4) and the second capacitor (5), the input terminal of first inductance (3) and the input of the first capacitor (4)
End connection, the output end of first inductance (3) connect with the input terminal of second capacitor (5), and first capacitor (4) and the
Two capacitors (5) are parallel with one another, and the high-pressure filter circuit is connected with the third capacitor (6) being serially connected and first resistor (7), institute
The input terminal for stating third capacitor (6) is connect with the second inductance (9), output filter capacitor (11) and second resistance (12), and described
The output end of two inductance (9) is connect with the anode of diode (10), the negative terminal of the diode (10) and the output filtered electrical
Hold (11), second resistance (12) to connect with one end of the 4th capacitor (13), the output end of second inductance (9) with it is described
The DRAIN foot of DX3563 integration module (8) connects, the negative terminal of the 4th capacitor (13) and the DX3563 integration module (8)
The connection of GND foot, the CS foot of the DX3563 integration module (8) one end with the 5th capacitor (15), the 4th resistance (16) respectively
The VIN foot of connection, the DX3563 integration module (8) is connected by the one end of 3rd resistor (14) and the second resistance (12)
It connects, the both ends of the second resistance (12) are connected with the positive and negative both ends of LED light (18), the VDD of the DX3563 integration module (8)
Foot is connect with the anode of the 6th capacitor (17).
2. a kind of Simple LED lamp silk lamp according to claim 1 dims route, it is characterised in that: the overcurrent protection is opened
Close and be connected to high-voltage ac power on the left of (1) and high-voltage rectifier (2), the input terminal of the overcurrent protective switch (1) and
The end L of high-voltage ac power connects, and the N-terminal of the high-voltage rectifier (2) is connect with the high-voltage rectifier (2).
3. a kind of Simple LED lamp silk lamp according to claim 1 dims route, it is characterised in that: the high-voltage rectifying electricity
Road (2) is rectifier bridge stack DB1, and the output end of rectifier bridge stack DB1 and high-voltage ac power is electrically connected.
4. a kind of Simple LED lamp silk lamp according to claim 1 dims route, it is characterised in that: the overcurrent protection is opened
Closing is protective tube/PTC thermistor.
5. a kind of Simple LED lamp silk lamp according to claim 1 dims route, it is characterised in that: the first resistor
(7), the other end of the 5th capacitor (15), the 4th resistance (16) and the 6th capacitor (17) is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822102075.7U CN209517578U (en) | 2018-12-14 | 2018-12-14 | A kind of Simple LED lamp silk lamp light modulation route |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822102075.7U CN209517578U (en) | 2018-12-14 | 2018-12-14 | A kind of Simple LED lamp silk lamp light modulation route |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209517578U true CN209517578U (en) | 2019-10-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822102075.7U Expired - Fee Related CN209517578U (en) | 2018-12-14 | 2018-12-14 | A kind of Simple LED lamp silk lamp light modulation route |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209517578U (en) |
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2018
- 2018-12-14 CN CN201822102075.7U patent/CN209517578U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191018 Termination date: 20201214 |
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| CF01 | Termination of patent right due to non-payment of annual fee |