CN206136378U - A driver chip and drive circuit for management of LED lighting supply source - Google Patents
A driver chip and drive circuit for management of LED lighting supply source Download PDFInfo
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- CN206136378U CN206136378U CN201621075883.3U CN201621075883U CN206136378U CN 206136378 U CN206136378 U CN 206136378U CN 201621075883 U CN201621075883 U CN 201621075883U CN 206136378 U CN206136378 U CN 206136378U
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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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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
A driver chip and drive circuit for management of LED lighting supply source relates to the LED lighting supply source. The inside circuit structure of driver chip includes power input module, benchmark reference source, output voltage detection module, pursues cycle current -limiting protective film piece, peak holding module, constant -current control module, logic controller, electric source driver, latch, circuit structure 0, first comparator, second comparator and excess temperature protected location. Drive circuit includes above -mentioned driver chip, fuse F1, and protective diode D3, D4 and D6, the rectifier bridge, transformer T1, current -limiting resistor R1, R2, R3, R4, R5 and R6, divider resistance R7 and R8, current detection resistance rcs, the limit lies prostrate resistance rrt, filter capacitance C1, C2, C3, C5, C7 and C9. High reliability, long -life, electromagnetic compatibility can be good, low -cost, constant current steady voltage, low -power consumption, the short circuit open circuit protection that the excess temperature excessive pressure is under -voltage, and stepless dimming controls.
Description
Technical field
This utility model is related to LED illumination power supply, more particularly, to a kind of driving chip for LED illumination power management
With drive circuit.
Background technology
At present, LED illumination application is quite varied, but its power driving circuit is unsatisfactory, there is power factor (PF) relatively low
The problems such as (PFC is relatively low), power consumption are larger, constant-current voltage-stabilizing precision is relatively low, have impact on reliability and the life-span of LED illumination, and which is main
Reason is the undesirable caused problem of driving chip design.
The content of the invention
The purpose of this utility model is to provide a kind of with high PFC, low-power consumption, high precision constant current voltage stabilizing, and is had
The various safety precautions of warm, over-pressed, under-voltage, short-circuit and open-circuit-protection, while the features such as controlling with non-pole light regulating, especially
Suitable for the driving chip and drive circuit of the LED illumination power management under the specific working environment of wisdom piping lane.
For achieving the above object, this utility model is adopted the following technical scheme that：
A kind of driving chip for LED illumination power management, the driving chip internal circuit configuration include that power supply is defeated
Enter module, fiducial reference source, output voltage detection module, Cycle by Cycle current-limiting protection module, peak value hold module, current constant control mould
Block, logic controller, power supply driver, latch, sawtooth generator, first comparator, the second comparator and overheat protector
Unit；
The Power Entry Module includes VCC under-voltage protections unit and VCC Overvoltage protecting units；VCC under-voltage protection units
One end is connected with supply voltage, and the VCC under-voltage protection unit other ends are connected with fiducial reference source, outfan and logic control after comparing
Device processed connection, VCC Overvoltage protecting units one end are connected with supply voltage, the VCC Overvoltage protecting units other end and logic controller
Connection；
The output voltage detection module includes output over-voltage protection unit and output clamper and zero passage detection unit；Output
Overvoltage protecting unit is connected with logic controller, and output clamper and zero passage detection unit are connected with constant-current control module；
The peak value hold module is connected with constant-current control module, and constant-current control module outfan is input into first comparator
Negative terminal connects, and sawtooth generator one end is connected with latch set end, and the sawtooth generator other end is defeated with first comparator
Enter anode connection, first comparator positive and negative terminal result of the comparison is exported gives latch reset end, latch outputs and logic control
Device connection processed；
The Cycle by Cycle current-limiting protection module is connected with logic controller；
Second comparator is connected with logic controller；
The over-temperature protection unit is connected with logic controller.
A kind of LED illumination power driving circuit, including above-mentioned driving chip, electric fuse F1, protection diode D3, D4 and
D6, rectifier bridge, transformator T1, current-limiting resistance R1, R2, R3, R4, R5 and R6, divider resistance R7 and R8, current sense resistor Rcs,
Limit volt resistance Rrt, filter capacitor C1, C2, C3, C5, C7 and C9；
Power supply is connected with rectifier bridge by inline fuse F1, shunt capacitance C1 in parallel and ground connection after rectifier bridge, by limit
Stream series resistance R3 and R6 power to driving chip, and are directly connected with the 1st foot of transformator T1, the 1st, 2 in transformator T1
Foot parallel connection protection circuit, protection circuit are composed in series by parallel circuit R1 and C2 and diode D4, driving chip power input
Parallel filtering electric capacity C7, and the 3rd foot of the R4 and reversal connection diode D6 to transformator T1 that connects, driving chip internal comparator 2 are defeated
Enter the supply voltage of end connection driving chip, driving chip internal comparator 1CtrL end inline bypass electric capacity C5 drives core to ground
Inside piece, sawtooth generator series connection limit volt resistance Rrt to ground, inside driving chip, protect by Cycle by Cycle current-limiting protection module and peak value
Holding module CS foot and foreign current detection resistance Rcs being connect to ground, detection module AUX parallel filtering electric capacity is exported inside driving chip
C9, connects the connection end of divider resistance R7 and R8, and driving chip internal drive power output end is connected with Mos pipe Q1 grids, metal-oxide-semiconductor
Q1 source electrodes are connected with the 2nd foot of transformator T1, and metal-oxide-semiconductor Q1 drain electrodes are connected to ground by divider resistance R7 and R8 series connection, transformator
The 4th feet of T1 are connected to ground, and the 3rd foot series resistances R7 of transformator T1 and R8 are to ground, transformator T1 outfans series connection protection diode
D3 and parallel filtering electric capacity C3 and current-limiting resistance R5 power to LED.
Compared with the prior art, the beneficial effects of the utility model are as follows：
This utility model utilizes advanced IC design technology and the high PFC power-saving technologies of power supply, designs including full
The high efficiency of the LED semiconductor lighting products under the specific working environment of sufficient wisdom piping lane, the LED cores of high PFC drive core
Piece and driving power supply circuit.There is provided a kind of high reliability, the long-life, good Electro Magnetic Compatibility, environmental protection and energy saving, low cost
LED illumination power solution, the high-power LED illumination application-specific integrated circuit product of high PFC and power supply driver, can meet domestic light fixture
Demand to driving power supply energy-conservation, high-performance, high reliability and low cost, while meet producing in wisdom piping lane intelligent luminaire
Demand of the product to driving power supply, can break Europe, the United States, day semiconductor chip company LED field of semiconductor illumination monopoly position.
This utility model has high PFC, high precision constant current voltage stabilizing, low-power consumption, and has excess temperature, overvoltage, under-voltage, short-circuit and open-circuit-protection
Various safety precautions, while with non-pole light regulating control, peripheral applications circuit is simple, the outstanding advantages such as low cost.
Description of the drawings
Fig. 1 is driving chip internal module structural representation described in the utility model.
Fig. 2 is the circuit theory schematic diagram of drive circuit embodiment described in the utility model.
Specific embodiment
Referring to Fig. 1, for the driving chip of LED illumination power management, its internal circuit structure include Power Entry Module,
Fiducial reference source, output voltage detection module, Cycle by Cycle current-limiting protection module, peak value hold module, constant-current control module, logic
Controller, power supply driver, latch, sawtooth generator, first comparator, the second comparator and over-temperature protection unit.
The Power Entry Module includes VCC under-voltage protections unit and VCC Overvoltage protecting units；VCC under-voltage protection units
One end is connected with supply voltage, and the other end is connected with fiducial reference source, and after comparing, outfan is connected with logic controller, VCC mistakes
Pressure protection location one end is connected with supply voltage, and the other end is connected with logic controller.
The output voltage detection module includes output over-voltage protection unit and output clamper and zero passage detection unit；Output
Overvoltage protecting unit is connected with logic controller, and output clamper and zero passage detection unit are connected with constant-current control module.
The peak value hold module is connected with constant-current control module, and constant-current control module outfan is input into first comparator
Negative terminal connects, and sawtooth generator one end is connected with latch set end, and the sawtooth generator other end is defeated with first comparator
Enter anode connection, first comparator positive and negative terminal result of the comparison is exported gives latch reset end, latch outputs and logic control
Device connection processed.
The Cycle by Cycle current-limiting protection module is connected with logic controller.
Second comparator is connected with logic controller.
The over-temperature protection unit is connected with logic controller.
This driving chip embodiment operation principle is as follows：
1st, supply voltage is to chip power supply, and after partial pressure inside driving chip with internal reference voltage ratio compared with working as voltage
During less than reference voltage, output is driven by logic circuit shut-off.Play a part of to be input into low-voltage variation.When voltage is higher than benchmark
During set point value, output is driven by logic circuit shut-off.Play a part of to be input into overvoltage protection.
2nd, driving chip AUX feet are sampled by the electric current to coil divider resistance end, give constant current by sampled data
Control end, is compared with reference voltage, judges whether shut-off using the signal of comparative result and Saw-tooth Signal Waveform Generator generation
Metal-oxide-semiconductor.When sampled value is higher than reference value, Saw-tooth Signal Waveform Generator produces lasting signal, internal logic circuit control MOS
Pipe constant conduction, if judging, less than reference voltage, Saw-tooth Signal Waveform Generator output signal is interrupted, internal logic circuit control
Metal-oxide-semiconductor is turned off.Play a part of output over-voltage protection and output constant current.
4th, the built-in temperature sensors of high precision of driving chip, when temperature is higher than design temperature, automatically shuts down metal-oxide-semiconductor, arrives
The effect of overheat protector.
5th, driving chip CS feet are current limliting protection end, when CS detection R9 foot input voltages are too high, then by internal logic
Circuit control metal-oxide-semiconductor shut-off.Play a part of current-limiting protection.
6th, EN feet are that driving chip enables foot, when it is higher than 3V to enable foot voltage, turns on metal-oxide-semiconductor, turn off metal-oxide-semiconductor on the contrary.
Referring to Fig. 2, for the drive circuit of LED illumination power management, including above-mentioned driving chip (labelling model
VS9931), electric fuse F1, protection diode D3, D4, D6, rectifier bridge, transformator T1, current-limiting resistance R1, R2, R3, R4, R5 and
R6, divider resistance R7 and R8, current sense resistor Rcs, limit volt resistance Rrt, filter capacitor C1, C2, C3, C5, C7 and C9.
Power supply is connected with rectifier bridge by inline fuse F1, shunt capacitance C1 in parallel after rectifier bridge, by current limiting series
Resistance R3 and R6 power to driving chip, and are directly connected with 1 foot of T1 transformators, the protection electricity in parallel of 1,2 feet in T1 transformators
Road, protection circuit are composed in series by R1C2 parallel circuits and diode D4, driving chip power input parallel filtering electric capacity C7,
And the R4 and reversal connection diode D6 that connects is to transformator T13 feet, the second comparator input terminal connection driving chip inside driving chip
Supply voltage, inside driving chip first comparator CtrL end inline bypass electric capacity C5 to ground, sawtooth waveforms inside driving chip
To ground, inside driving chip, Cycle by Cycle current-limiting protection module and peak value hold module CS foot connect outside to generator series resistance Rrt
Current sense resistor Rcs exports detection module AUX parallel filtering electric capacity C9 to ground, inside driving chip, meets divider resistance R7R8
Connection end, driving chip internal drive power output end are connected with Mos pipe Q1 grids, metal-oxide-semiconductor Q1 source electrodes and transformator T1 second
Foot connects, and metal-oxide-semiconductor Q1 drain electrodes are connected to ground by divider resistance R7 and R8 series connection.4 foot of T1 transformators is connected to ground, the series connection of 3 feet
To ground, T1 transformators exports protection diode D3 of connecting and power resistance R7 and R8 to LED, output-parallel filter capacitor C3 and limit
Leakage resistance R5.
This drive circuit embodiment operation principle is as follows：
1) Mos pipes (power tube) Q1 conductings：Power supply passes through the main sides of transformator T1 (1 2) and power tube Q1 and current detecting electricity
Resistance Rcs so that transformator T1 energy storage, until it reaches chip internal control time ton, now the main side peak point currents of transformator T1 are false
It is set to Ipp, power tube Q1 shut-offs；
2) Mos pipes (power tube) Q1 shut-offs：As the main sides of transformator T1 do not have discharge path, therefore transformator T1 electric currents pass through
Secondary (5 6) flows through 3 couples of load LED and electric capacity C3 of sustained diode and charges, and after transformator T1 energy is released, waits next
The arriving of individual turn-on cycle；
3) assume initially that transformator T1 energy is transmitted without loss, then the peak point current for obtaining during power tube Q1 conductings
Ipp, during power tube Q1 is turned off, energy is transmitted to load, if the main side of transformator T1 is n with the turn ratio of secondary：1, then
Under stable case, output loading LED average currents are finally obtained for fly-wheel diode average current, in can be to obtain defeated
Going out to load LED average currents is
Iled=1/2*n*Ipp*tdis/T
Wherein tdis is the inductance degaussing time, and T is the cycle；
4) and peak point current Ipp flows through current sense resistor Rcs, obtain voltage Vcs and be input to chip CS feet position, by taking
Sample circuit obtains the crest voltage Vcspp of Vcs, obtains degaussing time tdis by assists winding partial pressure input signal Vaux, and
Cycle T is the operating frequency corresponding cycle in chip, and chip internal is by the value of control Vcspp*tdis/T and reference electricity
Pressure 0.2v is relatively input to error amplifier, and which exports Vea to control ON time ton, can obtain a current regulator
Road；
Output loading LED current may finally be obtained is：
Iled=1/2*n*200mV/Rcs
Wherein Rcs is the current sense resistor in typical case's application；
After testing, above-described embodiment has the advantage that：
1. wide input voltage range width：80V-300V
2. electric current constant current accuracy is high：± 3%；Constant current output electric current：20mA-1000mA；
3. high conversion efficiency：Better than 85%；
4. high PFC：0.92；
5. PWM non-pole light regulatings are received；
6. operating temperature：- 40 DEG C～+85 DEG C；With safety protection functions such as excess temperature, overvoltage, under-voltage, short-circuit and open circuits；
7. CE, UL certification is supported in the driving of chip solution.
As seen from the above-described embodiment, this utility model is the high-power factor AC/DC based on primary side feedback technology
LED drive chip.Only need to few peripheral cell just can with precise control LED current, and without the need for optocoupler and secondary feedback electricity
Road；Inductance is operated in determines frequency discontinuous mode；Chip internal is integrated with complete defencive function, including current-limiting protection, output voltage
Protection, output short circuit protection and overheat protector.
Product peripheral application circuit is simple, and high reliability, long-life, Electro Magnetic Compatibility are good, environmental protection and energy saving, inexpensive
Feature, can make up blank of the China in many performance power management chips of the high PFC of low-power consumption.
Claims (2)
1. the driving chip of LED illumination power management is used for, it is characterised in that：The driving chip internal circuit configuration includes electricity
Source input module, fiducial reference source, output voltage detection module, Cycle by Cycle current-limiting protection module, peak value hold module, constant current control
Molding block, logic controller, power supply driver, latch, sawtooth generator, first comparator, the second comparator and excess temperature
Protection location；
The Power Entry Module includes VCC under-voltage protections unit and VCC Overvoltage protecting units；VCC under-voltage protection units one end
It is connected with supply voltage, the VCC under-voltage protection unit other ends are connected with fiducial reference source, outfan and logic controller after comparing
Connection, VCC Overvoltage protecting units one end are connected with supply voltage, and the VCC Overvoltage protecting unit other ends are connected with logic controller；
The output voltage detection module includes output over-voltage protection unit and output clamper and zero passage detection unit；Output overvoltage
Protection location is connected with logic controller, and output clamper and zero passage detection unit are connected with constant-current control module；
The peak value hold module is connected with constant-current control module, constant-current control module outfan and first comparator input negative terminal
Connection, sawtooth generator one end are connected with latch set end, and the sawtooth generator other end is just input into first comparator
End connection, first comparator positive and negative terminal result of the comparison is exported gives latch reset end, latch outputs and logic controller
Connection；
The Cycle by Cycle current-limiting protection module is connected with logic controller；
Second comparator is connected with logic controller；
The over-temperature protection unit is connected with logic controller.
2.LED mains lighting supply drive circuits, it is characterised in that：Including driving chip as claimed in claim 1, electric fuse F1, protect
Shield diode D3, D4 and D6, rectifier bridge, transformator T1, current-limiting resistance R1, R2, R3, R4, R5 and R6, divider resistance R7 and R8,
Current sense resistor Rcs, limit volt resistance Rrt, filter capacitor C1, C2, C3, C5, C7 and C9；
Power supply is connected with rectifier bridge by inline fuse F1, shunt capacitance C1 in parallel and ground connection after rectifier bridge, by current limliting string
Connection resistance R3 and R6 power to driving chip, and are directly connected with the 1st foot of transformator T1, in transformator T1 the 1st, 2 feet simultaneously
UNPROFOR protection circuit, protection circuit are composed in series by parallel circuit R1 and C2 and diode D4, and driving chip power input is in parallel
Filter capacitor C7, and the 3rd foot of the R4 and reversal connection diode D6 to transformator T1 that connects, 2 input of driving chip internal comparator
Connection driving chip supply voltage, driving chip internal comparator 1CtrL end inline bypass electric capacity C5 to, in driving chip
Portion sawtooth generator series connection limit volt resistance Rrt is to ground, Cycle by Cycle current-limiting protection module and peak holding mould inside driving chip
Block CS feet connect foreign current detection resistance Rcs to ground, export detection module AUX parallel filtering electric capacity C9, connect inside driving chip
The connection end of divider resistance R7 and R8, driving chip internal drive power output end are connected with Mos pipe Q1 grids, metal-oxide-semiconductor Q1 sources
Pole is connected with the 2nd foot of transformator T1, and metal-oxide-semiconductor Q1 drain electrodes are connected to ground by divider resistance R7 and R8 series connection, transformator T1 the 4th
Foot is connected to ground, the 3rd foot series resistances R7 of transformator T1 and R8 to ground, transformator T1 outfans series connection protection diode D3 and and
Connection filter capacitor C3 and current-limiting resistance R5 powers to LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621075883.3U CN206136378U (en) | 2016-09-23 | 2016-09-23 | A driver chip and drive circuit for management of LED lighting supply source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621075883.3U CN206136378U (en) | 2016-09-23 | 2016-09-23 | A driver chip and drive circuit for management of LED lighting supply source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206136378U true CN206136378U (en) | 2017-04-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621075883.3U Expired - Fee Related CN206136378U (en) | 2016-09-23 | 2016-09-23 | A driver chip and drive circuit for management of LED lighting supply source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206136378U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106304500A (en) * | 2016-09-23 | 2017-01-04 | 厦门矿通科技有限公司 | A kind of driving chip for LED illumination power management and drive circuit |
-
2016
- 2016-09-23 CN CN201621075883.3U patent/CN206136378U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106304500A (en) * | 2016-09-23 | 2017-01-04 | 厦门矿通科技有限公司 | A kind of driving chip for LED illumination power management and drive circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170426 Termination date: 20210923 |