CN107135579B

CN107135579B - A kind of Width funtion LED lamp drive circuit of tunable optical

Info

Publication number: CN107135579B
Application number: CN201710525781.XA
Authority: CN
Inventors: 朱健荣
Original assignee: Taizhou Jiao Guang Lighting Co Ltd
Current assignee: Taizhou Jiao Guang Lighting Co Ltd
Priority date: 2017-06-30
Filing date: 2017-06-30
Publication date: 2019-02-15
Anticipated expiration: 2037-06-30
Also published as: CN107135579A

Abstract

The present invention provides a kind of Width funtion LED lamp drive circuits of tunable optical, belong to driving circuit technical field.It solves the problems, such as that the prior art LED lamp driving circuit scope of application is low and the brightness of LED light can not be adjusted.A kind of Width funtion LED lamp drive circuit of tunable optical, including rectification module, two groups of LED lamp modules, light-adjusting module, detection module and the control module for connecting alternating current, rectification module output end is separately connected detection module and control module, the detection module and two groups of LED lamp modules are separately connected control module, two groups of concatenated voltage setting values of LED light of switching are equipped in control module, there is light modulation input terminal in control module, the light modulation input terminal of light-adjusting module link control module, light-adjusting module are also connected with the output end of rectification module.Present invention realization carries out luminosity adjusting to LED light and the range for making LED light be applicable in line voltage is wide.

Description

A kind of Width funtion LED lamp drive circuit of tunable optical

Technical field

The invention belongs to driving circuit technical fields, are related to a kind of Width funtion LED lamp drive circuit of tunable optical.

Background technique

LED is the English abbreviation of light emitting diode, is a kind of semiconductor subassembly.At the beginning be mostly used make indicator light, display shine Diode panel etc., with the appearance of white light LEDs, LED is used frequently as illumination.LED light is referred to as forth generation lighting source and green Color light source has the characteristics that energy-saving and environmental protection, service life are long, small in size.LED light is since it is with These characteristics, thus in the world By the favor of user.

Since LED light operating voltage is commonly DC voltage, the electricity for needing that driving circuit is arranged by alternating current in LED light Pressure is converted to DC voltage, then obtains the operating voltage of LED light after being divided and light for LED light.Due to many states in the world The line voltage disunity of family and many areas, such as Chinese alternating current is 220V, and Japan is 110V therefore identical LED light driving Circuit can not be general in the country of different alternating currents, can only change driving circuit or user buys a compatible transformer and turns It connects, is all inconvenient for manufacturer and user in this way.

Thus Chinese patent literature disclose application No. is CN201410190812.7 it is a kind of can work under full voltage High-voltage LED driving circuit, which includes at least LED unit, each group comprising multiple high-voltage LEDs and multiple switch pipe and Additional one group of LED module；For exporting string based on supply voltage and controlling the line voltage detection unit of signal, for being based on The string simultaneously controls signal to control the string of each group LED unit and the string and switch control unit, the electricity for will access of connection Source is converted to the rectification output unit of voltage needed for LED unit, for controlling based on the output voltage of rectifying output circuit often The driving unit of the electric current of the opening and closing and each high-voltage LED of each switching tube in one group of LED unit, thus can realize the low electricity of 120V Pressure and 277V high voltage can drive LED light.

Although above-mentioned patent can be realized the LED light driving of 120V low-voltage and 277V high voltage alternating current, it is applicable in model Enclose it is still smaller, be not able to satisfy it is in office where area's LED light be inserted into alternating current after can illuminate the effect used, while above-mentioned patent The brightness of LED light can not be adjusted after driving LED light lights, practicability is low.

Summary of the invention

There is the above problem in the present invention, propose a kind of Width funtion LED light driving electricity of tunable optical in view of the prior art Road, the technical problem to be solved by the present invention is to how carry out luminosity adjusting to LED light and LED light is made to be applicable in the model of line voltage It encloses wide.

The present invention is realized by following technical proposal: a kind of Width funtion LED lamp drive circuit of tunable optical, including is used for Connect the rectification module and two groups of LED lamp modules of alternating current, which is characterized in that this driving circuit further includes light-adjusting module, for examining The voltage for judging input is surveyed in low voltage range still in the detection module of high voltage range and for switching two groups of LED lamp modules Serial or parallel connection simultaneously controls the control module that two groups of LED lamp modules press rated power work, the rectification module output end difference Connecting detection module and control module, the detection module and two groups of LED lamp modules are separately connected control module, the control mould It is equipped with two groups of concatenated voltage setting values of LED light of switching in block, there is light modulation input terminal, the light modulation mould in the control module The light modulation input terminal of block link control module, the light-adjusting module are also connected with the output end of rectification module, the light-adjusting module packet Include resistance R37 and diode D10, one end of the cathode connection resistance R37 of diode D10, the other end ground connection of resistance R37, institute One end of resistance R37 connection diode D10 cathode is stated for inputting dimmer voltage signal, light-adjusting module is electric according to the light modulation of input The Signal Regulation for pressing signal output voltage signal to be inputted to the light modulation input terminal of control module, control module according to light modulation input terminal The operating power of two groups of LED lamp modules.

This driving circuit can export different voltage by the way that detection module is arranged according to different input voltage ranges For signal to control module, control module can control two groups of LED light serial or parallel connections to meet the utilization of present input voltage most Bigization, while two groups of LED light can be made to work by rated power, so that this driving circuit can adapt to wider line voltage Range, being capable of plug and play in most countries by the way that this driving circuit LED light product is arranged.Alternating current passes through rectification module It is rectified, detection module and control module is sent to after rectification, in rectification module output in low voltage range, detection Module, which is exported, is less than voltage setting value to the voltage signal of control module, and control module keeps two groups of LED lamp modules in parallel at this time, To make low-voltage also the voltage for inputing to LED light can be made to work enough, in high voltage range, detection module output is greater than electricity Press the voltage signal of setting value to control module, control module controls two groups of LED lamp module series connection, because high voltage inputs at this time Enough LED lamp modules are used in series.After completion is in series or in parallel, and light-adjusting module does not receive input dimmer voltage When signal, control module adjusts the power of LED lamp module at this time, makes LED lamp module work on rated power.In diode When the cathode and resistance R37 of D10 receive dimmer voltage signal, the voltage for inputing to light-adjusting module to rectification module is divided To change the voltage signal that light-adjusting module is input to light modulation input terminal, the signal pair that control module is inputted according to light modulation input terminal The operating power of two groups of LED light should be adjusted.

In the Width funtion LED lamp drive circuit of above-mentioned tunable optical, the light-adjusting module is connected with transmission dimmer voltage The light modulator of signal, the output end of light modulator are separately connected the cathode of diode D10 and one end of resistance R37.Light modulator energy The fixed dimmer voltage signal value of enough output, is also adjusted the dimmer voltage signal value of output.The light modulation exported according to light modulator Voltage signal values are different, and the operating power of two groups of LED light can change correspondingly, so that brightness changes.

In the Width funtion LED lamp drive circuit of above-mentioned tunable optical, light-adjusting module further includes triode Q20, for dividing Partial pressure unit one, partial pressure unit two and the partial pressure unit three of pressure, partial pressure unit one be separately connected rectification module output end and The collector of triode Q20, partial pressure unit two are separately connected the output end of rectification module and the base stage of triode Q20, partial pressure Unit three is separately connected the anode of the light modulation input terminal of control module, the emitter of triode Q20 and connection diode D10, The emitter of triode Q20 is also connected with one end of resistance R37 ground connection.Partial pressure unit one and partial pressure unit two are to the defeated of rectification module Outlet output voltage carry out partial pressure make triode Q20 be connected, using partial pressure unit three partial pressure to control module light modulation Input terminal to divide partial pressure unit three again, so as to be believed according to dimmer voltage by inputting dimmer voltage signal Number size to change input to control module light modulation input terminal voltage.Partial pressure unit one, partial pressure unit two and partial pressure Unit three is respectively provided at least one resistance.

In the Width funtion LED lamp drive circuit of above-mentioned tunable optical, partial pressure unit one includes resistance R32 and resistance R33, Partial pressure unit two includes resistance R34 and resistance R35, and partial pressure unit three includes resistance R36, resistance R38 and resistance R39, resistance R32 One end connection rectification module output end, the other end connect resistance R33 one end, the other end connecting triode of resistance R33 The collector of Q20, the output end of one end connection rectification module of resistance R34, the other end connect one end of resistance R35, resistance R35 The other end be separately connected the base stage of triode Q20, the emitter of one end connecting triode Q20 of resistance R36, resistance R36's The other end is separately connected one end of resistance R38 and the anode of diode D10, the other end of resistance R38 are separately connected resistance R39 One end and control module light modulation input terminal, resistance R39 the other end ground connection.By be arranged multiple resistance divided from And can be improved thermal diffusivity, keep entire circuit work more stable.

In the Width funtion LED lamp drive circuit of above-mentioned tunable optical, the detection module includes triode Q1 and three poles Pipe Q2, for the control module outputting reference voltage to triode Q1 and triode Q2, rectification module exports detection voltage to three poles Pipe Q1 and triode Q2, in low voltage range, triode Q1 and triode Q2, which is turned off, can make two groups of LED lamp modules in parallel；? Triode Q1 and triode Q2, which is opened, when high voltage range can make two groups of LED lamp module series connection, and the detection module further includes For the resistance R1 of partial pressure, resistance R2, resistance R3, resistance R4, resistance R5 and at least with a resistance resistance unit one, The output end of one end connection rectification module of resistance unit one, the collector link control module of the triode Q1 simultaneously pass through electricity The other end of R1 connection resistance unit one, triode Q1 emitter link control module are hindered, triode Q1 base stage passes through resistance R2 Link control module, the collector of the triode Q2 pass through the base stage of resistance R3 connecting triode Q1, the transmitting of triode Q2 Pole passes through resistance R4 link control module, the other end of the base stage connection resistance unit one of triode Q2, the base stage of triode Q2 It is also connected with one end of resistance R5, the other end ground connection of resistance R5, the emitter of triode Q2 is also connected with resistance R6, resistance R6's Other end ground connection.

Resistance unit one includes concatenated resistance R7 and resistance R8.Resistance R1, resistance R2, resistance R3, resistance R4, resistance R5 And resistance R7 and resistance R8 be partial pressure effect, input be the voltage in low voltage range when, do not meet triode Q1 With triode Q2 turn-on condition, thus triode Q1 and triode Q2 closure, the voltage of rectification module output passes through resistance R7, electricity After hindering R8 and resistance R1 partial pressure, becomes one and be less than the voltage signal of voltage setting value to control module.What it is in input is low The voltage of triode Q1 and triode Q2 conducting when voltage in voltage range, rectification module output passes through resistance R7, resistance R8 And become the voltage signal for being greater than voltage setting value along with the voltage by triode Q1 outflow after resistance R1 partial pressure To control module.Triode Q1 is PNP type triode, and triode Q2 is NPN type triode.

In the Width funtion LED lamp drive circuit of above-mentioned tunable optical, the detection module further includes triode Q3, resistance R9 and resistance unit two, one end of the base stage connection resistance unit two of the triode Q3 and one end of resistance R9, resistance The output end of the other end connection rectification module of unit two, the other end ground connection of resistance R9, the emitter connection three of triode Q3 The emitter of pole pipe Q2, the collector of the collector connecting triode Q2 of the triode Q3, total electricity of the resistance unit two Resistance value is greater than the total resistance value of resistance unit one.Resistance unit two includes resistance R10.Height can be increased by the way that triode Q3 is arranged Reference voltage detection improves the scope of application of this driving circuit.Since the total resistance value of resistance unit two is greater than resistance unit one The tie point of total resistance value, triode Q3 is identical as the tie point of triode Q2, therefore also not when meeting triode Q2 condition The turn-on condition for meeting triode Q3, when the voltage of rectification module output is greater than certain value, triode Q3 is connected at this time, and three Pole pipe Q4 is also switched on, and in the case that voltage becomes larger again, triode Q4 is closed, and triode Q3 is held on, until being more than height Voltage range.Triode Q3 is NPN type triode.

In the Width funtion LED lamp drive circuit of above-mentioned tunable optical, the control module includes metal-oxide-semiconductor Q4, metal-oxide-semiconductor Q5 With resistance R13, in low voltage range, detection module exports the voltage signal less than voltage setting value and gives metal-oxide-semiconductor Q4, makes metal-oxide-semiconductor Q4 shutdown, metal-oxide-semiconductor Q5 are opened；In high voltage range, detection module exports the voltage signal greater than voltage setting value to metal-oxide-semiconductor Q4 opens metal-oxide-semiconductor Q4, metal-oxide-semiconductor Q5 shutdown, the grid of the drain electrode connection metal-oxide-semiconductor Q5 of the metal-oxide-semiconductor Q4, the source electrode of metal-oxide-semiconductor Q4 It is connected with resistance R11, the other end ground connection of resistance R11, the grid of the metal-oxide-semiconductor Q4 is separately connected resistance R1's and triode Q1 Collector, the grid of metal-oxide-semiconductor Q4 are also connected with resistance R12, the other end ground connection of resistance R12, the drain electrode connection of the metal-oxide-semiconductor Q5 The output end of rectification module, the source electrode of metal-oxide-semiconductor Q5 are connected with diode D1, and the anode of diode D1 connects metal-oxide-semiconductor Q5, and cathode connects Wherein one group of the input terminal of two groups of LED lamp modules is connect, the input terminal of another group of LED lamp module passes through resistance R13 connection and rectifies The cathode of output end and output end connection the diode D1 of module, the grid of the metal-oxide-semiconductor Q5 are connected with resistance unit three, resistance The output end of the connection rectification module of unit three.

The grid of metal-oxide-semiconductor Q4 receives the voltage signal that detection module is sent, and is unsatisfactory for metal-oxide-semiconductor Q4's in low voltage range Turn-on condition, metal-oxide-semiconductor Q4 is turned off at this time, and electric current flow to the grid of metal-oxide-semiconductor Q5 from resistance unit three, and metal-oxide-semiconductor Q5 has higher electricity Pressure meets turn-on condition, and electric current is flowed through from metal-oxide-semiconductor to wherein one group of two groups of LED light all the way at this time, and another way is passed through from resistance R13 It crosses to another group of LED light, realizes that the units such as two groups of LED are in parallel.Meet the turn-on condition of MOS Q4 pipe in high voltage range, Metal-oxide-semiconductor Q4 is connected at this time, and metal-oxide-semiconductor Q5 is closed, and there was only electric current all the way at this time, thus two groups of LED lamp modules series connection.Resistance unit three Including resistance R14, resistance R15 and resistance R16.The voltage setting value minimum that both metal-oxide-semiconductor Q4 is connected.

In the Width funtion LED lamp drive circuit of above-mentioned tunable optical, the control module includes for adjusting LED light mould The control chip of block operating power, the detection input of the control chip are connected with sampling unit, the control of the control chip Output end processed is connected with power adjustment unit, and the output end of two groups of LED lamp modules is separately connected the input terminal of power adjustment unit, The output end of the power adjustment unit connects sampling unit, and the power supply side of the control chip is connected with resistance R17, electricity The output end of R17 connection rectification module is hindered, the power output end of the control chip is separately connected the emitter of triode Q1, three The emitter of pole pipe Q2 and the emitter of triode Q3, the control chip are sentenced according to the voltage signal that sampling unit is sent Disconnected control power adjustment unit adjusts the operating power of LED lamp module, and the control chip has light modulation input terminal, resistance R38 The other end connection light modulation input terminal.Chip outputting reference voltage is controlled to the transmitting of the emitter, triode Q2 of triode Q1 The emitter of pole and triode Q3 detects used in rectification module input voltage, together for triode Q1, triode Q2 and triode Q3 When no dimmer voltage input time control coremaking piece by control power adjustment unit make LED lamp module regardless of series connection or parallel connection It works in rated power.The light modulation input terminal of control chip is exactly the light modulation input terminal of control module.

In the Width funtion LED lamp drive circuit of above-mentioned tunable optical, the sampling unit includes resistance R18, resistance R19, resistance R20, metal-oxide-semiconductor Q6 and metal-oxide-semiconductor Q7, in low voltage range metal-oxide-semiconductor Q6 close, metal-oxide-semiconductor Q7 unlatching make resistance R18 and Resistance R20 series connection, it is the voltage on resistance R18 that the detection input for controlling chip, which samples voltage,；In high voltage range, Metal-oxide-semiconductor Q6 is opened, and metal-oxide-semiconductor Q7 is closed, and it is the voltage on resistance R19 that the detection input for controlling chip, which samples voltage,.Due to It is different with the connection type of two groups of LED lamp modules under high voltage range under low voltage range, guaranteeing different connection types Lower two groups of LED lamp modules need LED lamp module operating current when will increase parallel connection all in rated power.Pass through above-mentioned setting It can make to control chip by the operating current of power adjustment unit adjusting LED lamp module at low voltage than LED under high voltage The operating current of lamp module is big, so as to make the operating power of the LED lamp module in low voltage range and high voltage range It is identical.

In the Width funtion LED lamp drive circuit of above-mentioned tunable optical, the sampling unit further includes metal-oxide-semiconductor Q8, resistance The one end R18 is separately connected the detection input of control chip and one end of resistance R20, and the other end is separately connected the one of resistance R19 End and power adjustment unit, the other end ground connection of resistance R19, the drain electrode of the other end connection metal-oxide-semiconductor Q7 of resistance R20 are described The source electrode of metal-oxide-semiconductor Q7 is grounded, the power output end of the grid connection control chip of metal-oxide-semiconductor Q7, and the grid and power supply of metal-oxide-semiconductor Q7 is defeated The drain electrode that resistance R21 and resistance R22, the metal-oxide-semiconductor Q6 are connected between outlet passes through the power supply that resistance R22 connection controls chip Output end, the grid of the grid connection metal-oxide-semiconductor Q4 of metal-oxide-semiconductor Q6, the grid of the grid connection metal-oxide-semiconductor Q7 of metal-oxide-semiconductor Q8, metal-oxide-semiconductor Q8 Drain electrode connect power adjustment unit, the source electrode ground connection of the source electrode of the metal-oxide-semiconductor Q8 and metal-oxide-semiconductor Q6.Sampling unit is above-mentioned to be set Q6 closing can be met in low voltage range by setting, and metal-oxide-semiconductor Q7 is opened and metal-oxide-semiconductor Q8 is opened, and metal-oxide-semiconductor Q8 is opened so that power tune It saves unit and power regulation is carried out to two groups of LED lamp modules after parallel connection, Q6 unlatching is met in low voltage range, metal-oxide-semiconductor Q7 is closed It closes and metal-oxide-semiconductor Q8 is closed, metal-oxide-semiconductor Q8 is closed so that power adjustment unit carries out power tune to two groups of LED lamp modules after series connection Section.

In the Width funtion LED lamp drive circuit of above-mentioned tunable optical, the power adjustment unit includes two groups of metal-oxide-semiconductors, Every group of metal-oxide-semiconductor includes at least a metal-oxide-semiconductor, and every group of LED lamp module includes at least one LED lamp unit, and a LED lamp unit is extremely There is a LED light less, the output end of two groups of LED lamp modules is all connected with wherein one group of metal-oxide-semiconductor, and another group of metal-oxide-semiconductor connection is wherein One group of LED lamp module.The operating current in LED lamp module is adjusted by adjusting the duty ratio of metal-oxide-semiconductor.To make LED light mould Block is consistent with the operating power in high voltage range in low voltage range.

In the Width funtion LED lamp drive circuit of above-mentioned tunable optical, every group of LED lamp module all has three LED light lists Member, respectively LED lamp unit one, LED lamp unit two, LED lamp unit three, LED lamp unit four, LED lamp unit five and LED light list Member six, every group of three LED lamp units series connection are sequentially connected, and there are three metal-oxide-semiconductors, respectively metal-oxide-semiconductor Q9, MOS for one group of metal-oxide-semiconductor tool Pipe Q10, metal-oxide-semiconductor Q11, there are two metal-oxide-semiconductor, respectively metal-oxide-semiconductor Q12 and metal-oxide-semiconductor Q13, the leakages of metal-oxide-semiconductor Q9 for another group of metal-oxide-semiconductor tool Pole connects the current output terminal for being separately connected LED lamp unit one and LED lamp unit four, and the drain electrode connection of metal-oxide-semiconductor Q10 is separately connected The current output terminal of LED lamp unit two and LED lamp unit five, the drain electrode of metal-oxide-semiconductor Q11 are separately connected LED lamp unit three and LED light The current output terminal of unit six, the current output terminal of the drain electrode connection LED lamp unit five of metal-oxide-semiconductor Q12, the drain electrode of metal-oxide-semiconductor Q13 connect Connect the current output terminal of LED lamp unit six, the grid of metal-oxide-semiconductor Q9, the grid of metal-oxide-semiconductor Q10, metal-oxide-semiconductor Q11 grid, metal-oxide-semiconductor The grid of Q12 and the grid of metal-oxide-semiconductor Q13 are separately connected the control output end of control chip, source electrode, the metal-oxide-semiconductor Q10 of metal-oxide-semiconductor Q9 Source electrode, the source electrode of metal-oxide-semiconductor Q11, the source electrode of metal-oxide-semiconductor Q12 and metal-oxide-semiconductor Q13 source electrode be separately connected resistance R19.

The operating voltage of LED lamp unit one is as the operating voltage of LED lamp unit four, the work electricity of LED lamp unit two Pressure is as the operating voltage of LED lamp unit five, the operating voltage of LED lamp unit three and the operating voltage one of LED lamp unit six Sample.Corresponding operating current adjusting is carried out to LED lamp unit respectively by the way that multiple metal-oxide-semiconductors are arranged, thus make to adjust it is high-efficient, and And the setting of multiple metal-oxide-semiconductors can heat dissipation effect it is relatively good, improve the stability of circuit.

Compared with prior art, the Width funtion LED lamp drive circuit of this tunable optical has the advantage that

1, the present invention can export different electricity by the way that detection module is arranged according to different input voltage ranges Press signal to control module, control module can control two groups of LED light serial or parallel connections to meet the utilization of present input voltage It is wider to maximize the scope of application.

2, the present invention be able to maintain LED lamp module be held in the case where low pressure or high input voltage rated power into Row work.

3, the dimmer voltage signal value that the present invention can be exported according to light modulator is different, the operating power of two groups of LED light It can change correspondingly, so that brightness changes.

Detailed description of the invention

Fig. 1 is structural schematic diagram of the invention.

Fig. 2 is circuit structure connection schematic diagram of the invention.

Fig. 3 is the structural schematic diagram of detection module of the present invention.

Fig. 4 is the structural schematic diagram of control module of the present invention.

Fig. 5 is the structural schematic diagram of rectification module of the present invention.

Fig. 6 is the structural schematic diagram of two groups of LED lamp modules of the invention.

Fig. 7 is the structural schematic diagram of light-adjusting module of the present invention.

Fig. 8 is present invention light modulation input terminal input different voltages and the signal for controlling LED lamp module total working changed power Figure.

In figure, 1, alternating current；2, rectification module；3, LED lamp module；4, detection module；5, control module；6, light-adjusting module； 7, light modulator；8, chip is controlled；9, sampling unit；10, power adjustment unit；11, LED lamp unit one；12, LED lamp unit two； 13, LED lamp unit three；14, LED lamp unit four；15, LED lamp unit five；16, LED lamp unit six；17, full bridge rectifier bridge.

Specific embodiment

The following is specific embodiments of the present invention, and technical scheme of the present invention will be further described in conjunction with attached drawing, However, the present invention is not limited to these examples.

A point in Fig. 3 is connect with the A point in Fig. 5 respectively with the A point in Fig. 4, and the B point in Fig. 3 and the B point in Fig. 4 connect It connects, the C point in Fig. 3 is connect with the C point in Fig. 4, and the D point in Fig. 3 is connect with the D point in Fig. 4, the E point in Fig. 3 and the E in Fig. 4 Point connection, and the F point in Fig. 4 is connect with the F point in Fig. 6, and the G point in Fig. 4 is connect with the G point in Fig. 6, the H point in Fig. 4 and H point in Fig. 6 connects, and the I point in Fig. 4 is connect with the I point in Fig. 6, and the J point in Fig. 4 is connect with the J point in Fig. 6, the K in Fig. 4 Point is connect with the K point in Fig. 6, and the L point in Fig. 4 is connect with the L point in Fig. 6, and the M point in Fig. 4 is connect with the M point in Fig. 6, Fig. 7 In O point connect with the O point in Fig. 3, the Q point in Fig. 7 is connect with the Q point in Fig. 4, and the P point in the P point in Fig. 7 and Fig. 4 connects It connects, to form the circuit diagram in Fig. 2.

As shown in Figure 1, a kind of Width funtion LED lamp drive circuit of tunable optical, including the rectification module for connecting alternating current 1 2, two groups of LED lamp modules 3, the voltage for detecting judgement input are in low voltage range still in the detection module of high voltage range 4 and for switching two groups of 3 serial or parallel connections of LED lamp module and controlling the control mould that two groups of LED lamp modules 3 press rated power work Block 5.2 output end of rectification module is separately connected detection module 4 and control module 5, and detection module 4 and two groups of LED lamp modules 3 are distinguished Link control module 5.Two groups of concatenated voltage setting values of LED light of switching are equipped in control module 5.Have in control module 5 and adjusts Light input end, the light modulation input terminal of 6 link control module 5 of light-adjusting module, light-adjusting module 6 are also connected with the output end of rectification module 2.

As shown in Figure 2 and Figure 7, light-adjusting module 6 includes resistance R37 and diode D10, and the cathode of diode D10 connects electricity Hinder one end of R37, the other end ground connection of resistance R37, for inputting dimmer voltage between the cathode and resistance R37 of diode D10 Signal, light modulation input terminal of the light-adjusting module 6 according to the dimmer voltage signal output voltage signal of input to control module 5, control The operating power for two groups of LED lamp modules 3 of Signal Regulation that module 5 is inputted according to light modulation input terminal.Light-adjusting module 6 is connected with transmission The light modulator 7 of dimmer voltage signal, the output end of light modulator 7 be separately connected diode D10 cathode and resistance R37 one End.In the present embodiment light modulator 7 include processing chip, handle chip output end be separately connected diode D10 cathode and One end of resistance R37, processing chip ground end ground connection.Alternatively light modulator 7 includes that can export burning voltage Power circuit, the anode of power circuit are separately connected the cathode of diode D10 and one end of resistance R37, cathode ground connection.

As shown in Figure 2 and Figure 7, light-adjusting module 6 further includes triode Q20, partial pressure unit one, partial pressure unit for partial pressure Two and partial pressure unit three, partial pressure unit one be separately connected the output end of rectification module 2 and the collector of triode Q20, divide Unit two is separately connected the output end of rectification module 2 and the base stage of triode Q20, partial pressure unit three are separately connected control module 5 light modulation input terminal, the emitter of triode Q20 and the anode for connecting diode D10, the emitter of triode Q20 also connect One end of connecting resistance R37 ground connection.Partial pressure unit one includes resistance R32 and resistance R33, and partial pressure unit two includes resistance R34 and electricity R35 is hindered, partial pressure unit three includes resistance R36, resistance R38 and resistance R39, the output of one end connection rectification module 2 of resistance R32 End, the other end connect one end of resistance R33, the collector of the other end connecting triode Q20 of resistance R33, one end of resistance R34 The output end of rectification module 2 is connected, the other end connects one end of resistance R35, and the other end of resistance R35 is separately connected triode The base stage of Q20, the emitter of one end connecting triode Q20 of resistance R36, the other end of resistance R36 are separately connected resistance R38's The anode of one end and diode D10, the other end of resistance R38 are separately connected one end of resistance R39 and the tune of control module 5 Light input end, the other end ground connection of resistance R39.

As shown in Figure 2 and Figure 7, light-adjusting module 6 further includes the capacitor C18 for filtering, capacitor C19 and for pressure stabilizing Zener diode ZD3 also prevents the diode D9 of electric current reverse circulated.The cathode connected to the transistor Q20 of zener diode ZD3 Base stage, the plus earth of zener diode ZD3, triode Q20 emitter connection diode D9 anode, diode D9's Cathode connects one end, one end of resistance R37 and one end of capacitor C18 of resistance R36, the other end ground connection of capacitor C18.Capacitor The light modulation input terminal of one end link control module 5 of C19, the other end of capacitor C19 are grounded respectively.

Alternatively: light-adjusting module 6 includes a metal-oxide-semiconductor three, and the grid of the metal-oxide-semiconductor connects the defeated of light modulator 7 Outlet, source electrode pass through the light modulation input terminal of divider resistance link control module 5, and drain electrode connects rectification module 2 by divider resistance Output end.Light modulator 7 controls the duty ratio of metal-oxide-semiconductor three to adjust the voltage for the light modulation input terminal for inputing to control module 5 Signal is adjusted chief engineer's rate of doing work of two groups of LED lamp modules 3 by control module 5.

As shown in Figures 2 and 3, detection module 4 includes triode Q1 and triode Q2.5 outputting reference voltage of control module To triode Q1 and triode Q2, rectification module 2 exports detection voltage to triode Q1 and triode Q2, in low voltage range Triode Q1 and triode Q2 are turned off, and detection module 4 exports the voltage signal less than voltage setting value to control module 5, control It is in parallel that molding block 5 controls two groups of LED lamp modules 3；In high voltage range, triode Q1 and triode Q2 are opened, detection module 4 export the voltage signal greater than voltage setting value to control module 5, and control module 5 controls two groups of LED lamp modules 3 and connects.

As shown in Figures 2 and 3, detection module 4 further include the resistance R1 for partial pressure, resistance R2, resistance R3, resistance R4, Resistance R5 and the resistance unit one at least with a resistance.The output end of one end connection rectification module 2 of resistance unit one, The collector link control module 5 of triode Q1 and the other end for passing through resistance R1 connection resistance unit one, triode Q1 transmitting Pole link control module 5, for triode Q1 base stage by resistance R2 link control module 5, the collector of triode Q2 passes through resistance The base stage of R3 connecting triode Q1, by resistance R4 link control module 5, the base stage of triode Q2 connects the emitter of triode Q2 The other end of connecting resistance unit one, the base stage of triode Q2 are also connected with one end of resistance R5, the other end ground connection of resistance R5, three poles The emitter of pipe Q2 is also connected with resistance R6, the other end ground connection of resistance R6.Resistance unit one includes concatenated resistance R7 and electricity R8, the output end of one end connection rectification module 2 of resistance R7 are hindered, the other end connects one end of resistance R8, the other end of resistance R8 It is separately connected the base stage of triode Q2 and one end of resistance R1.

As shown in Figures 2 and 3, detection module 4 further includes triode Q3, resistance R9 and resistance unit two.Triode Q3 Base stage connection resistance unit two one end and resistance R9 one end, the other end connection rectification module 2 of resistance unit two Output end, the other end ground connection of resistance R9, the emitter of the emitter connecting triode Q2 of triode Q3, the current collection of triode Q3 The collector of pole connecting triode Q2, the total resistance value of resistance unit two are greater than the total resistance value of resistance unit one.Resistance unit Two include that resistance R10 and resistance R23, resistance R10 and resistance R23 connect, the base stage of one end connecting triode Q3 of resistance R10, The output end of one end connection rectification module 2 of resistance R23.Detection module 4 further includes for filtering and the capacitor C1 and electricity of energy storage Hold C2, the base stage of one end connecting triode Q3 of capacitor C1, other end ground connection, the base of one end connecting triode Q2 of capacitor C2 Pole, other end ground connection.

Alternatively: detection module 4 includes comparator, and one of input terminal of comparator passes through divider resistance The output end of rectification module 2 is connected, another input terminal provides benchmark by divider resistance link control module 4, control module 4 Voltage shows to work as when the voltage of the input terminal input of comparator connection rectification module 2 is higher than when control module 4 provides reference voltage Preceding alternating current input is in high voltage range, and comparator output voltage signal controls two groups to control module 4, control module 4 at this time LED lamp module 3 is connected, otherwise for output voltage signal to control module 4, control module 4 does not control two groups of LED lamp modules to comparator 3 is in parallel.

As shown in Figure 2 and Figure 4, control module 5 includes metal-oxide-semiconductor Q4, metal-oxide-semiconductor Q5 and resistance R13, is examined in low voltage range It surveys the voltage signal that module 4 export less than voltage setting value and gives metal-oxide-semiconductor Q4, turn off metal-oxide-semiconductor Q4, metal-oxide-semiconductor Q5 opening；In high electricity When pressing range, detection module 4 export the voltage signal greater than voltage setting value and gives metal-oxide-semiconductor Q4, makes metal-oxide-semiconductor Q4 opening, metal-oxide-semiconductor Q5 Shutdown.The grid of the drain electrode connection metal-oxide-semiconductor Q5 of metal-oxide-semiconductor Q4, the source electrode of metal-oxide-semiconductor Q4 are connected with resistance R11, and resistance R11's is another End ground connection.The grid of metal-oxide-semiconductor Q4 is separately connected the collector of resistance R1 and triode Q1, and the grid of metal-oxide-semiconductor Q4 is also connected with electricity Hinder R12, the other end ground connection of resistance R12.The output end of the drain electrode connection rectification module 2 of metal-oxide-semiconductor Q5, the source electrode of metal-oxide-semiconductor Q5 connect It is connected to diode D1, the anode of diode D1 connects metal-oxide-semiconductor Q5, and cathode connects wherein one group of the input of two groups of LED lamp modules 3 The input terminal at end, another group of LED lamp module 3 connects diode by the output end and output end of resistance R13 connection rectification module 2 The cathode of D1.The grid of metal-oxide-semiconductor Q5 is connected with resistance unit three, and resistance unit three connects the output end of rectification module 2.Resistance list Member three includes resistance R14, resistance R15 and resistance R16.The voltage setting value minimum that both metal-oxide-semiconductor Q4 is connected.The one of resistance R14 The grid of end connection metal-oxide-semiconductor Q5, the other end connect one end of resistance R15, and the other end of resistance R15 connects one end of resistance R16, The other end of resistance R16 is connected with diode D2, and the anode of diode D2 connects resistance R13, and cathode connects resistance R16.Resistance Capacitor C6 is provided between R15 and resistance R16.This control module 5 further includes voltage regulation unit, and voltage regulation unit includes zener diode The both ends of ZD1, resistance R28 and capacitor C3, resistance R28 and capacitor C3 are separately connected the source electrode and resistance R14 of triode Q5 One end, the source electrode of the anode connecting triode Q5 of zener diode ZD1, the one of the cathode connection resistance R14 of zener diode ZD1 End.

As shown in Figure 2 and Figure 4, control module 5 includes the control chip 8 for adjusting 3 operating power of LED lamp module.Control Coremaking piece 8 uses the chip of model L1050.The detection input of control chip 8 is connected with sampling unit 9, control chip 8 Control output end is connected with power adjustment unit 10, and the output end of two groups of LED lamp modules 3 is separately connected power adjustment unit 10 Input terminal.The output end of power adjustment unit 10 connects sampling unit 9.The power supply side of control chip 8 is connected with resistance The power output end of R17, the output end of resistance R17 connection rectification module 2, control chip 8 are separately connected the transmitting of triode Q1 Pole, the emitter of triode Q2 and triode Q3 emitter pass through resistance and by the base stage of resistance R2 connecting triode Q1 R2 and resistance R3 is separately connected the collector of triode Q2 and the collector of triode Q3.Chip 8 is controlled to be sent out according to sampling unit 9 The voltage signal sent judges and control the operating power that power adjustment unit 10 adjusts LED lamp module 3.Control chip 8 has Five control output ends, respectively control output end one, control output end two, control output end three, control output end four, control Output end five.The both ends of resistance R17 are connected separately with capacitor C7 and capacitor C8, the other end ground connection of capacitor C7 and capacitor C8.Electricity Hold C7 and capacitor C8 for filtering, is connected between resistance R17 and rectification module 2 by resistance R13, the both ends difference of resistance R13 Connect the output end of resistance R17 and rectification module 2.The power output end of control chip 8 is connected with defeated for stability contorting chip 8 The resistance R30 and capacitor C15 and capacitor C16 of voltage out, the one end resistance R30 connection control chip 8, the other end connect capacitor One end of C15, the other end ground connection of capacitor C15, one end connection control chip 8 of capacitor C16, other end ground connection.Control chip 8 It is also connected with capacitor C17, the other end ground connection of capacitor C17.Controlling chip 8 has light modulation input terminal, and the light modulation for controlling chip 8 is defeated Enter the light modulation input terminal that end is exactly control module 5, resistance R38, resistance R39 and capacitor C19 are separately connected light modulation input terminal.

Alternatively: control module 5 includes microprocessor, power adjustment unit 10, sampling unit 9 and relay Device one, relay two, two groups of LED lamp modules 3 are separately connected power adjustment unit 10, and sampling unit 9 connects power adjustment unit 10, sampling unit 9 connects microprocessor, and power adjustment unit 10 connects the output end of microprocessor, and the normally closed of relay one is opened Setting is closed wherein between one group of LED lamp module 3 and the output end of rectification module 2, the current input terminal of this group of LED lamp module 3 with The normally closed switch of relay two, the coil and relay of relay one are set between the current output terminal of another group of LED lamp module 3 Two coil is separately connected the output end of microprocessor.Microprocessor controls the normally closed of relay one in alternating current high voltage range Switch disconnects, the normally closed switch closure of relay two, thus two groups of LED lamp module series connection；Microprocessor is at alternating current in low electricity The normally closed switch closure of control relay one when pressing range, the normally closed switch of relay two disconnects, so that two groups of LED lamp modules are simultaneously Connection.

As shown in Figure 2 and Figure 4, sampling unit 9 includes resistance R18, resistance R19, resistance R20, metal-oxide-semiconductor Q6 and metal-oxide-semiconductor Q7, In low voltage range, metal-oxide-semiconductor Q6 is closed, and metal-oxide-semiconductor Q7 unlatching makes resistance R18 and resistance R20 connect, and the detection for controlling chip 8 is defeated Entering end to sample voltage is the voltage on resistance R18；In high voltage range, metal-oxide-semiconductor Q6 is opened, and metal-oxide-semiconductor Q7 is closed, and controls core It is the voltage on resistance R19 that the detection input of piece 8, which samples voltage,.Sampling unit 9 further includes metal-oxide-semiconductor Q8 and capacitor C13, electricity Resistance one end R18 is separately connected the detection input of control chip 8 and one end of resistance R20, and the other end is separately connected resistance R19's One end and power adjustment unit 10, the other end ground connection of resistance R19, the drain electrode of the other end connection metal-oxide-semiconductor Q7 of resistance R20. The source electrode of metal-oxide-semiconductor Q7 is grounded, the power output end of the grid connection control chip 8 of metal-oxide-semiconductor Q7, the grid and power supply of metal-oxide-semiconductor Q7 Resistance R21 and resistance R22 are connected between output end, the drain electrode of metal-oxide-semiconductor Q6 controls the power supply of chip 8 by resistance R22 connection Output end, the grid of the grid connection metal-oxide-semiconductor Q4 of metal-oxide-semiconductor Q6, the grid of the grid connection metal-oxide-semiconductor Q7 of metal-oxide-semiconductor Q8, metal-oxide-semiconductor Q8 Drain electrode connect power adjustment unit 10, the source electrode ground connection of the source electrode of metal-oxide-semiconductor Q8 and metal-oxide-semiconductor Q6.Distinguish at the both ends of capacitor C13 Connect grid and the ground connection of metal-oxide-semiconductor Q7.

Alternatively: sampling unit 9 includes current sensor, and the electric current of current sensor connection control chip is adopted Sample input terminal, control chip 8 show that current alternating current is in high voltage range or low according to the judgement of the input voltage of detection module Voltage range, the interior current setting value one that rated power work is pressed equipped with two groups of LED lamp modules 3 of low voltage range of control chip 8 And two groups of LED lamp modules 3 of low voltage range press the current setting value two of rated power work.In low voltage range, control The electric current and current setting value one that chip 8 is sent according to current sensor are compared in the two difference, and regulation power is adjusted Unit 10 changes the electric current in circuit until the two is consistent, and in high voltage range, control chip 8 is sent according to current sensor Electric current and current setting value two be compared in the two difference, regulation power adjust unit 10 change circuit in electric current it is straight It is consistent to the two.The enough work of two groups of LED lamp modules 3 is in rated power when to make series connection and parallel connection.

As shown in Figure 2 and Figure 4, power adjustment unit 10 includes two groups of metal-oxide-semiconductors, and every group of metal-oxide-semiconductor includes at least a MOS Pipe, every group of LED lamp module 3 includes at least one LED lamp unit, and a LED lamp unit at least has a LED light, two groups of LED The output end of lamp module 3 is all connected with wherein one group of metal-oxide-semiconductor, and another group of metal-oxide-semiconductor connects wherein one group of LED lamp module 3.

As shown in Figure 2 and Figure 6, preferably, every group of LED lamp module 3 all has three LED lamp units, respectively LED light Unit 1, LED lamp unit 2 12, LED lamp unit 3 13, LED lamp unit 4 14, LED lamp unit 5 15 and LED lamp unit six 16, every group of three LED lamp units series connection is sequentially connected, and there are three metal-oxide-semiconductors, respectively metal-oxide-semiconductor Q9, metal-oxide-semiconductor for one group of metal-oxide-semiconductor tool Q10, metal-oxide-semiconductor Q11, there are two metal-oxide-semiconductor, respectively metal-oxide-semiconductor Q12 and metal-oxide-semiconductor Q13, the drain electrodes of metal-oxide-semiconductor Q9 for another group of metal-oxide-semiconductor tool Connection is separately connected the current output terminal of LED lamp unit 1 and LED lamp unit 4 14, and the drain electrode connection of metal-oxide-semiconductor Q10 connects respectively The current output terminal of LED lamp unit 2 12 and LED lamp unit 5 15 is connect, the drain electrode of metal-oxide-semiconductor Q11 is separately connected LED lamp unit three 13 and LED lamp unit 6 16 current output terminal.The current output terminal of the drain electrode connection LED lamp unit 5 15 of metal-oxide-semiconductor Q12, MOS The current output terminal of the drain electrode connection LED lamp unit 6 16 of pipe Q13, the grid of metal-oxide-semiconductor Q9, the grid of metal-oxide-semiconductor Q10, metal-oxide-semiconductor The grid of the grid of Q11, the grid of metal-oxide-semiconductor Q12 and metal-oxide-semiconductor Q13 is separately connected the control output end of control chip 8, metal-oxide-semiconductor Q9 Source electrode, the source electrode of metal-oxide-semiconductor Q10, the source electrode of metal-oxide-semiconductor Q11, the source electrode of metal-oxide-semiconductor Q12 and metal-oxide-semiconductor Q13 source electrode be separately connected electricity Hinder R19.

The operating voltage of LED lamp unit 1 as the operating voltage of LED lamp unit 4 14, LED lamp unit 2 12 Operating voltage is as the operating voltage of LED lamp unit 5 15, the operating voltage and LED lamp unit 6 16 of LED lamp unit 3 13 Operating voltage it is the same.

As shown in Figure 2 and Figure 4, power adjustment unit 10 further includes metal-oxide-semiconductor Q14, metal-oxide-semiconductor Q15, metal-oxide-semiconductor Q16, metal-oxide-semiconductor Q17, metal-oxide-semiconductor Q18, capacitor C12, resistance 24, resistance 25, resistance 26 and resistance 27.The source electrode connection resistance 24 of metal-oxide-semiconductor Q13 One end, one end of the other end connection resistance R19 of resistance 24, the grid of metal-oxide-semiconductor Q14, the grid of metal-oxide-semiconductor Q15, metal-oxide-semiconductor Q16 Grid is all connected with the grid of metal-oxide-semiconductor Q13, and the grid connection of metal-oxide-semiconductor Q13 controls the control output end five of chip 8, metal-oxide-semiconductor Q14's Drain electrode, the drain electrode of metal-oxide-semiconductor Q15 and the drain electrode of metal-oxide-semiconductor Q16 are all connected with the drain electrode of metal-oxide-semiconductor Q13, and the source electrode of metal-oxide-semiconductor Q14 connects electricity Hinder one end of R25, one end of one end connection resistance R19 of resistance R25, one end of the source electrode connection resistance R26 of metal-oxide-semiconductor Q15, electricity One end of one end connection resistance R19 of R26 is hindered, one end of the source electrode connection resistance R27 of metal-oxide-semiconductor Q16, one end of resistance R27 connects One end of connecting resistance R19.

The grid of metal-oxide-semiconductor Q17 and the grid of metal-oxide-semiconductor Q18 are all connected with the grid of metal-oxide-semiconductor Q11, the drain electrode of metal-oxide-semiconductor Q17 and The drain electrode of metal-oxide-semiconductor Q18 is all connected with the drain electrode of metal-oxide-semiconductor Q11, and the source electrode of metal-oxide-semiconductor Q17 connects resistance R19 with the source electrode of metal-oxide-semiconductor Q18 One end.The grid connection of the control output end one, metal-oxide-semiconductor Q10 of the grid connection control chip 8 of metal-oxide-semiconductor Q9 controls chip 8 Control output end two, the control output end three of grid connection control chip 8 of metal-oxide-semiconductor Q11, the grid of metal-oxide-semiconductor Q12 connect control The control output end four of chip 8.The one end capacitor C12 connects the grid other end ground connection of metal-oxide-semiconductor Q9, is filtered.Pass through increase Metal-oxide-semiconductor Q14, metal-oxide-semiconductor Q15, metal-oxide-semiconductor Q16, metal-oxide-semiconductor Q17 and metal-oxide-semiconductor Q18 improve power regulation efficiency, and in two groups of LED There are last electric current outflow end multiple metal-oxide-semiconductors to be adjusted after the LED lamp unit series connection of lamp module 3, further increase heat dissipation With power regulation effect.

Alternatively: power adjustment unit 10 includes two groups of metal-oxide-semiconductors, every group of metal-oxide-semiconductor to having a metal-oxide-semiconductor, Respectively metal-oxide-semiconductor one and metal-oxide-semiconductor two, the drain electrode of the current output terminal connection metal-oxide-semiconductor one of LED lamp unit 3 13, the grid of metal-oxide-semiconductor one Pole connection control chip 8, the source electrode of metal-oxide-semiconductor one connect resistance R19, and the current output terminal of LED lamp unit 6 16 connects metal-oxide-semiconductor two Drain electrode, the grid connection control chip 8 of metal-oxide-semiconductor two, the source electrode of metal-oxide-semiconductor two connects resistance R19.

As shown in Figure 2 and Figure 4, control module 5 further includes the capacitor C9 for filtering, capacitor 10, capacitor C11 and for preventing Only the anode of the diode D3, diode D4, diode D5 and diode D6, diode D3 of electric current reverse circulated connect LED light The output end of unit 3 13, the input terminal of the cathode connection LED lamp unit 4 14 of diode D3；The anode of diode D4 connects The output end of LED lamp unit 4 14, the output end of the cathode connection LED lamp unit 1 of diode D4；The anode of diode D5 Connect the output end of LED lamp unit 5 15, the output end of the cathode connection LED lamp unit 2 12 of diode D5；Diode D6's Anode connects the output end of LED lamp unit 6 16, the output end of the cathode connection LED lamp unit 3 13 of diode D5.Capacitor C9 One end, capacitor 10 one end and capacitor C11 one end ground connection, capacitor C9 the other end connection diode D4 cathode, capacitor The cathode of 10 other end connection diode D5, the cathode of the other end connection diode D6 of capacitor C11.

As shown in Figure 2 and Figure 4, control module 5 further includes the input voltage of the power factor and harmonic wave for adjusting alternating current 1 Detection unit.Input voltage measurement unit include metal-oxide-semiconductor Q19, resistance R29, zener diode ZD2, resistance R31, resistance R25, Resistance R26 and capacitor C14.The output end of one end connection rectification module 2 of resistance R25, the other end connect one end of resistance R26, 1 voltage detection terminal of alternating current of the other end connection control chip 8 of resistance R26, one end of resistance R29, zener diode ZD2 yin One end of pole, one end of resistance R31 and capacitor C14 is separately connected 1 voltage detection terminal of alternating current of control chip 8.Resistance R29's The other end connects the drain electrode of metal-oxide-semiconductor Q19, the grid of the grid connection metal-oxide-semiconductor Q4 of the drain electrode of metal-oxide-semiconductor Q19, the source of metal-oxide-semiconductor Q19 Pole ground connection.The plus earth of zener diode ZD2, the other end of resistance R31 and the other end ground connection of capacitor 14.By above-mentioned Being arranged can remain that the voltage of 1 voltage detection terminal of the alternating current input of control chip 8 will not puncture control chip 8, and energy Enough adjust the power factor and harmonic wave of alternating current 1.

As shown in figure 5, rectification module 2 includes the varistor VR1 and full-bridge rectification for preventing current surge from impacting Bridge 18 and capacitor C4 and capacitor C5 for filtering.Varistor VR1 is connected in parallel between alternating current 1 and full bridge rectifier bridge 18, full-bridge Alternating voltage can be become DC voltage by 18 circuit of rectifier bridge, this is the prior art, be repeated no more.Capacitor C4 and capacitor C5 points It is not in parallel with full bridge rectifier bridge 18.The output end of full bridge rectifier bridge 18 is separately connected resistance R7, resistance R23, resistance 13, metal-oxide-semiconductor Q5 and resistance 25.Detection module 4 and control module 5 be powered there are also two groups of LED lamp modules 3 with this.As another A kind of scheme rectification module 2 includes rectifier, is rectified by rectifier to alternating current.

It is the course of work of the invention below:

When the Width funtion LED lamp drive circuit work of this tunable optical, when alternating current 1 and rectification module 2 are connected, rectification module 2 Output is to detection module 4 and control module 5 after rectifying to alternating current 1.

The voltage that rectification module 2 exports after rectifying gives control chip 8 by output after resistance R13 and resistance R17 partial pressure Power supply side be powered, make control chip 8 start to work, control chip 8 power output end outputting reference voltage give The emitter of the emitter of triode Q1, the emitter of triode Q2 and triode Q3, while being exported after the rectification of rectification module 2 Voltage is given to the collector of triode Q1 after resistance R7 and resistance R8 and resistance R1 partial pressure, and rectification module 2 is defeated after rectifying Voltage out is given to the base stage of triode Q2, the voltage that rectification module 2 exports after rectifying after resistance R7 and resistance R8 partial pressure The base stage of triode Q3, the collector of triode Q2 and the collector of triode Q3 are given to after the partial pressure of resistance R10 and R23 Also the reference voltage that control chip 8 exports is obtained.

When alternating current 1 is that low voltage range inputs, the base stage of not sufficiently large voltage input to triode Q2 and three poles Pipe Q3 base stage, so that triode Q2 and triode Q3 do not generate biasing, in the case where triode Q2 is not generated and is biased off, so that Triode Q1 is also without generating biasing, so that triode Q1 is turned off.Therefore it is divided by resistance R7 and resistance R8 and resistance R1 Be given to afterwards the grid of the Q4 of metal-oxide-semiconductor voltage be less than metal-oxide-semiconductor Q4 starting voltage.The starting voltage of the Q4 of metal-oxide-semiconductor both metal-oxide-semiconductor The minimum i.e. voltage setting value of Q4 conducting.Voltage stream after rectification module 2 rectifies in the case where the Q4 of metal-oxide-semiconductor is closed To the grid of metal-oxide-semiconductor Q5, reach the starting voltage of metal-oxide-semiconductor Q5, metal-oxide-semiconductor Q5 is connected at this time.After metal-oxide-semiconductor Q5 conducting, rectification module 2 Rectification after electric current be flowed into LED lamp unit 1 by resistance R13, and flow successively through LED lamp unit 2 12 and LED light Unit 3 13, while the electric current after the rectification of rectification module 2 is flowed into LED lamp unit 4 14 by diode D1, then successively It is flowed into LED lamp unit 5 15 and LED lamp unit 6 16, so that two groups of LED lamp modules 3 form parallel connection, so as in low electricity Pressing in range, there is enough operating voltages to work for LED lamp module 3.

It is when high voltage range inputs and when being less than 200V, since total resistance value of resistance unit two is greater than resistance in alternating current 1 Total resistance value of unit one, therefore voltage input not sufficiently large at this moment is to triode Q3 base stage, but meets triode Q2's Turn-on condition, triode Q3 are closed, triode Q2 conducting.When alternating current 1 is greater than 200V, triode Q2 is held on, triode Q3 is also held on, and when being greater than 220V, triode Q2 is closed, and triode Q3 is held on.By above-mentioned setting to full Foot expands the matched range of this driving circuit, so that practicability is higher.When the triode Q3 of triode Q2 being made to simultaneously turn on one section Between avoid occurring the case where triode Q3 and triode Q2 are simultaneously closed off in high voltage input.

In at least one conducting of triode Q2 and triode Q3, so that triode Q1 is also switched on, to make metal-oxide-semiconductor Q4 Grid not only obtain rectification module 2 rectify after voltage by partial pressure after voltage and triode Q1 conducting after control chip Metal-oxide-semiconductor Q4 is connected to be greater than the starting voltage of metal-oxide-semiconductor Q4 in the reference voltage of 8 outputs, and metal-oxide-semiconductor Q4 conducting drags down metal-oxide-semiconductor The grid voltage of Q5, so that metal-oxide-semiconductor Q5 be made to close.Therefore after the electric current after rectification module 2 rectifies passes through resistance R13, thus LED Lamp unit 1 successively flows to LED lamp unit 6 16, and two groups of LED lamp modules 3 are connected.

Due to the connection type difference under low voltage range with two groups of LED lamp modules 3 under high voltage range, guaranteeing The general power that two groups of LED lamp modules 3 add up under different connection types is all in total rated power, when needing that parallel connection will be increased 3 operating current of LED lamp module.

In low voltage range, metal-oxide-semiconductor Q6 is closed, and metal-oxide-semiconductor Q7 and metal-oxide-semiconductor Q8 are opened, and metal-oxide-semiconductor Q8 unlatching drags down metal-oxide-semiconductor The grid voltage of Q12, metal-oxide-semiconductor Q13, metal-oxide-semiconductor Q14, metal-oxide-semiconductor Q15 and metal-oxide-semiconductor Q16, so that they are closed.Metal-oxide-semiconductor Q9, metal-oxide-semiconductor Q10, metal-oxide-semiconductor Q11, metal-oxide-semiconductor Q17 and metal-oxide-semiconductor Q18 conducting, thus low voltage range time control coremaking piece 8 by metal-oxide-semiconductor Q9, Metal-oxide-semiconductor Q10, metal-oxide-semiconductor Q11, metal-oxide-semiconductor Q17 and metal-oxide-semiconductor Q18 adjust the operating power of two groups of LED lamp modules 3.Control chip 8 is set Surely there is the corresponding sampled voltage setting value of two groups of total rated power of LED lamp module 3, in low voltage range due to metal-oxide-semiconductor Q7 Open, thus control chip 8 acquire be resistance R18 voltage, control chip 8 according to sampling back voltage output it is different Duty cycle signals control metal-oxide-semiconductor Q9, metal-oxide-semiconductor Q10, metal-oxide-semiconductor Q11, metal-oxide-semiconductor Q17 and metal-oxide-semiconductor Q18 according to corresponding duty ratio work Make, be equal to sampled voltage setting value until controlling the voltage that chip 8 samples, is equal to sampled voltage setting value in the voltage of sampling When, control chip 8 controls metal-oxide-semiconductor Q9, metal-oxide-semiconductor Q10, metal-oxide-semiconductor Q11, metal-oxide-semiconductor Q17 and metal-oxide-semiconductor Q18 according to current duty ratio Work.

In high voltage range, metal-oxide-semiconductor Q6 is opened, and metal-oxide-semiconductor Q7 and metal-oxide-semiconductor Q8 are closed, and metal-oxide-semiconductor Q9 to metal-oxide-semiconductor Q18 is led It is logical, so that the work function of two groups of LED lamp modules 3 is adjusted by metal-oxide-semiconductor Q9 to metal-oxide-semiconductor Q18 in high voltage range time control coremaking piece 8 Rate.Therefore control the acquisition of chip 8 in high voltage range is the voltage of resistance R19, electricity of the control chip 8 according to sampling back Pressure exports different duty cycle signals control metal-oxide-semiconductor Q9 to metal-oxide-semiconductor Q18 according to corresponding duty cycle, until controlling chip 8 The voltage of sampling is equal to sampled voltage setting value, and when the voltage of sampling is equal to sampled voltage setting value, control chip 8 is controlled Metal-oxide-semiconductor Q9 to metal-oxide-semiconductor Q18 is according to current duty cycle.It is controlled in series connection and when in parallel due to two groups of LED lamp modules 3 The resistance object that chip 8 samples is different, and the voltage on resistance R19 sampled when in parallel is the voltage on the resistance R18 of sampling Twice, but the operating voltage due to LED lamp unit 1 is as the operating voltage of LED lamp unit 4 14, LED lamp unit 2 12 Operating voltage as the operating voltage of LED lamp unit 5 15, the operating voltage of LED lamp unit 3 13 and LED lamp unit six 16 operating voltage is the same, therefore twice when reaching identical sampled voltage setting value, electric current reaches series connection when parallel connection, To which two groups of LED lamp modules 3 can reach identical rated power in series connection and parallel connection by this driving circuit.

The Width funtion LED lamp drive circuit of this tunable optical also has light-adjusting module 6, inputs to light modulation mould by light modulator 7 The voltage signal of block 6 is different, so as to adjust the operating power of LED lamp module 3, so that 3 brightness of LED lamp module becomes Change.When rectification module 2 exports the voltage after rectifying, it is given to triode Q20's after resistance R32 and resistance R33 partial pressure Collector is given to the base stage of triode Q20 after resistance R34 and resistance R35 partial pressure.To make triode Q20 be connected, and And control chip 8 is input to after being divided using resistance R36 to resistance R39.In no access light modulator 7 or light modulator 7 when not exporting dimmer voltage signal, two groups of LED lamp modules 3 by this driving circuit can series connection and it is in parallel when reach phase Same rated power.When light modulator 7 exports dimmer voltage signal, so that the voltage assigned on resistance R37 generates variation, The voltage inputed on resistance R38 and resistance R39 after triode Q20 conducting changes, to be input to light modulation input terminal Variation.Different according to the voltage of input, control chip 8 is controlled two groups of LED lamp modules and is worked with different general powers.Low The duty that voltage range time control coremaking piece 8 passes through adjusting metal-oxide-semiconductor Q9, metal-oxide-semiconductor Q10, metal-oxide-semiconductor Q11, metal-oxide-semiconductor Q17 and metal-oxide-semiconductor Q18 Than the operating power for adjusting two groups of LED lamp modules 3, in high voltage range time control coremaking piece 8 by adjusting metal-oxide-semiconductor Q9 to metal-oxide-semiconductor The operating power of two groups of LED lamp modules 3 of adjusting of Q18.

The range for inputing to the voltage of light-adjusting module 6 as preferred light modulator 7 is 0 to 10V, corresponding to be input to control core Voltage on piece 8 is 0 to 2.5V.As shown in figure 8, the light modulation for controlling chip 8 is defeated when light modulator 7 inputs the voltage signal of 10V The voltage for entering end input is 2.5V, and control chip 8 controls two groups of LED lamp modules 3 and works according to full rated power.When control chip When the voltage of 8 light modulation input terminal input is less than 0.15V, control LED lamp module 3 does not work, in the light modulation input of control chip 8 When the voltage of end input is greater than 0.2V, the voltage of input is bigger, and the operating power that control chip 8 controls LED lamp module 3 is bigger, To which LED lamp module 3 is brighter.When the voltage being input on control chip 8 is 1.7V, control chip 8 controls two groups of LED lamp modules 3 work according to the 80% of rated power；When the voltage being input on control chip 8 is 1.7V, control chip 8 controls two groups of LED Lamp module 3 works according to the 80% of rated power；When the voltage being input on control chip 8 is 1.15V, control chip 8 is controlled Two groups of LED lamp modules 3 work according to the 60% of rated power；When the voltage being input on control chip 8 is 0.73V, core is controlled Piece 8 controls two groups of LED lamp modules 3 according to 40% work of rated power.Light modulator 7 inputs to the voltage signal of light-adjusting module 6 It can be manually set.Controlling the metal-oxide-semiconductor progress duty cycle adjustment that chip 8 controls in power adjustment unit 10 is the prior art, This is not repeated.

Specific embodiment described herein is only an example for the spirit of the invention.The neck of technology belonging to the present invention The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.

Although alternating current 1 is used more herein, rectification module 2, LED lamp module 3, detection module 4, control module 5, adjusts Optical module 6, light modulator 7, control chip 8, sampling unit 9, power adjustment unit 10, LED lamp unit 1, LED lamp unit two 12, the arts such as LED lamp unit 3 13, LED lamp unit 4 14, LED lamp unit 5 15, LED lamp unit 6 16, full bridge rectifier bridge 17 Language, but it does not exclude the possibility of using other terms.The use of these items is only for be more convenient to describe and explain this The essence of invention；Being construed as any additional limitation is disagreed with spirit of that invention.

Claims

1. a kind of Width funtion LED lamp drive circuit of tunable optical, including for connecting alternating current (1) rectification module (2) and two groups LED lamp module (3), which is characterized in that this driving circuit further include light-adjusting module (6), for detect judgement input voltage exist Low voltage range is still in the detection module of high voltage range (4) and for switching two groups of LED lamp module (3) serial or parallel connections simultaneously The control module (5) that two groups of LED lamp modules (3) work by rated power is controlled, rectification module (2) output end is separately connected Detection module (4) and control module (5), the detection module (4) and two groups of LED lamp modules (3) are separately connected control module (5), it is equipped with two groups of concatenated voltage setting values of LED light of switching in the control module (5), has on the control module (5) Input terminal is dimmed, the light modulation input terminal of light-adjusting module (6) link control module (5), the light-adjusting module (6) is also connected with whole The output end of flow module (2), the light-adjusting module (6) include resistance R37 and diode D10, and the cathode of diode D10 connects electricity One end of R37 is hindered, the other end ground connection of resistance R37, one end of the resistance R37 connection diode D10 cathode is adjusted for inputting Photoelectric signal, light-adjusting module (6) are defeated to the light modulation of control module (5) according to the dimmer voltage signal output voltage signal of input Enter end, the operating power for two groups of LED lamp modules (3) of Signal Regulation that control module (5) is inputted according to light modulation input terminal.

2. the Width funtion LED lamp drive circuit of tunable optical according to claim 1, which is characterized in that the light-adjusting module (6) it is connected with the light modulator (7) for sending dimmer voltage signal, the output end of light modulator (7) is separately connected the cathode of diode D10 And one end of resistance R37.

3. the Width funtion LED lamp drive circuit of tunable optical according to claim 1 or 2, which is characterized in that light-adjusting module It (6) further include triode Q20, partial pressure unit one, partial pressure unit two and partial pressure unit three for partial pressure, partial pressure unit one is distinguished It connects the output end of rectification module (2) and the collector of triode Q20, partial pressure unit two is separately connected rectification module (2) The base stage of output end and triode Q20, partial pressure unit three are separately connected the light modulation input terminal of control module (5), triode Q20 Emitter and connect diode D10 anode, the emitter of triode Q20 be also connected with resistance R37 ground connection one end.

4. the Width funtion LED lamp drive circuit of tunable optical according to claim 3, which is characterized in that partial pressure unit one is wrapped Resistance R32 and resistance R33 are included, partial pressure unit two includes resistance R34 and resistance R35, and partial pressure unit three includes resistance R36, resistance The output end of one end connection rectification module (2) of R38 and resistance R39, resistance R32, the other end connect one end of resistance R33, electricity The collector of the other end connecting triode Q20 of R33 is hindered, the output end of one end connection rectification module (2) of resistance R34 is another One end of end connection resistance R35, the other end of resistance R35 are separately connected the base stage of triode Q20, one end connection of resistance R36 The emitter of triode Q20, the other end of resistance R36 are separately connected one end of resistance R38 and the anode of diode D10, electricity The other end of resistance R38 is separately connected one end of resistance R39 and the light modulation input terminal of control module (5), the other end of resistance R39 Ground connection.

5. the Width funtion LED lamp drive circuit of tunable optical according to claim 3, which is characterized in that the detection module It (4) include triode Q1 and triode Q2, control module (5) the outputting reference voltage is whole to triode Q1 and triode Q2 Flow module (2) exports detection voltage to triode Q1 and triode Q2, and in low voltage range, triode Q1 and triode Q2 are equal Closing can make two groups of LED lamp modules (3) in parallel；In high voltage range, triode Q1 and triode Q2, which is opened, can make two groups LED lamp module (3) series connection, the detection module (4) further include the resistance R1 for partial pressure, resistance R2, resistance R3, resistance R4, Resistance R5 and the resistance unit one at least with a resistance, the output of one end connection rectification module (2) of resistance unit one End, the collector link control module (5) of the triode Q1 and the other end for passing through resistance R1 connection resistance unit one, three poles Pipe Q1 emitter link control module (5), triode Q1 base stage pass through resistance R2 link control module (5), the triode Q2 Collector by the base stage of resistance R3 connecting triode Q1, the emitter of triode Q2 passes through resistance R4 link control module (5), the other end of the base stage connection resistance unit one of triode Q2, the base stage of triode Q2 are also connected with one end of resistance R5, electricity The other end ground connection of R5 is hindered, the emitter of triode Q2 is also connected with resistance R6, the other end ground connection of resistance R6.

6. the Width funtion LED lamp drive circuit of tunable optical according to claim 5, which is characterized in that the detection module It (4) further include triode Q3, resistance R9 and resistance unit two, one end of the base stage connection resistance unit two of the triode Q3 And one end of resistance R9, the output end of other end connection rectification module (2) of resistance unit two, another termination of resistance R9 Ground, the emitter of the emitter connecting triode Q2 of triode Q3, the collection of the collector connecting triode Q2 of the triode Q3 Electrode, the total resistance value of the resistance unit two are greater than the total resistance value of resistance unit one.

7. the Width funtion LED lamp drive circuit of tunable optical according to claim 6, which is characterized in that the control module It (5) include metal-oxide-semiconductor Q4, metal-oxide-semiconductor Q5 and resistance R13, in low voltage range, detection module (4) output is less than voltage setting value Voltage signal gives metal-oxide-semiconductor Q4, turns off metal-oxide-semiconductor Q4, and metal-oxide-semiconductor Q5 is opened；In high voltage range, detection module (4) output is big Metal-oxide-semiconductor Q4 is given in the voltage signal of voltage setting value, opens metal-oxide-semiconductor Q4, the drain electrode of metal-oxide-semiconductor Q5 shutdown, the metal-oxide-semiconductor Q4 connects The grid of metal-oxide-semiconductor Q5 is connect, the source electrode of metal-oxide-semiconductor Q4 is connected with resistance R11, and the other end of resistance R11 is grounded, the metal-oxide-semiconductor Q4's Grid is separately connected the collector of resistance R1 and triode Q1, and the grid of metal-oxide-semiconductor Q4 is also connected with resistance R12, and resistance R12's is another One end ground connection, the output end of drain electrode connection rectification module (2) of the metal-oxide-semiconductor Q5, the source electrode of metal-oxide-semiconductor Q5 are connected with diode The anode of D1, diode D1 connects metal-oxide-semiconductor Q5, and cathode connects wherein one group of the input terminal of two groups of LED lamp modules (3), another The input terminal of group LED lamp module (3) connects diode D1 by the output end and output end of resistance R13 connection rectification module (2) Cathode, the grid of the metal-oxide-semiconductor Q5 is connected with resistance unit three, and resistance unit three connects the output end of rectification module (2).

8. the Width funtion LED lamp drive circuit of tunable optical according to claim 7, which is characterized in that the control module It (5) include control chip (8) for adjusting LED lamp module (3) operating power, the detection input of control chip (8) It is connected with sampling unit (9), the control output end of control chip (8) is connected with power adjustment unit (10), two groups of LED light The output end of module (3) is separately connected the input terminal of power adjustment unit (10), the output end of the power adjustment unit (10) It connects sampling unit (9), the power supply side of control chip (8) is connected with resistance R17, resistance R17 connection rectification module (2) power output end of output end, control chip (8) is separately connected the hair of the emitter of triode Q1, triode Q2 The emitter of emitter-base bandgap grading and triode Q3, control chip (8) carry out judgement control according to the voltage signal that sampling unit (9) is sent Power adjustment unit (10) processed adjusts the operating power of LED lamp module (3), and the control chip (8) has light modulation input terminal, electricity Hinder the other end connection light modulation input terminal of R38.

9. the Width funtion LED lamp drive circuit of tunable optical according to claim 8, which is characterized in that the sampling unit It (9) include resistance R18, resistance R19, resistance R20, metal-oxide-semiconductor Q6 and metal-oxide-semiconductor Q7, in low voltage range, metal-oxide-semiconductor Q6 is closed, MOS Pipe Q7 unlatching makes resistance R18 and resistance R20 connect, and it is on resistance R18 that the detection input of control chip (8), which samples voltage, Voltage；In high voltage range, metal-oxide-semiconductor Q6 is opened, and metal-oxide-semiconductor Q7 is closed, and the detection input of control chip (8) samples voltage For the voltage on resistance R19, the sampling unit (9) further includes metal-oxide-semiconductor Q8, and the one end resistance R18 is separately connected control chip (8) Detection input and resistance R20 one end, the other end is separately connected one end and the power adjustment unit (10) of resistance R19, The other end of resistance R19 is grounded, the drain electrode of the other end connection metal-oxide-semiconductor Q7 of resistance R20, the source electrode ground connection of the metal-oxide-semiconductor Q7, The power output end of grid connection control chip (8) of metal-oxide-semiconductor Q7, is connected between the grid and power output end of metal-oxide-semiconductor Q7 Power output end of the drain electrode of resistance R21 and resistance R22, the metal-oxide-semiconductor Q6 by resistance R22 connection control chip (8), MOS The grid of the grid connection metal-oxide-semiconductor Q4 of pipe Q6, the grid of the grid connection metal-oxide-semiconductor Q7 of metal-oxide-semiconductor Q8, the drain electrode connection of metal-oxide-semiconductor Q8 Power adjustment unit (10), the source electrode of the metal-oxide-semiconductor Q8 and the source electrode ground connection of metal-oxide-semiconductor Q6.

10. the Width funtion LED lamp drive circuit of tunable optical according to claim 8, which is characterized in that the power regulation Unit (10) includes two groups of metal-oxide-semiconductors, and every group of metal-oxide-semiconductor includes at least a metal-oxide-semiconductor, and every group of LED lamp module (3) includes at least one LED lamp unit, a LED lamp unit at least have a LED light, and the output end of two groups of LED lamp modules (3) is all connected with wherein one Group metal-oxide-semiconductor, wherein one group of LED lamp module (3), every group of LED lamp module (3) all have three LED light lists for another group of metal-oxide-semiconductor connection Member, respectively LED lamp unit one (11), LED lamp unit two (12), LED lamp unit three (13), LED lamp unit four (14), LED Lamp unit five (15) and LED lamp unit six (16), every group of three LED lamp units series connection are sequentially connected, and one group of metal-oxide-semiconductor has three A metal-oxide-semiconductor, respectively metal-oxide-semiconductor Q9, metal-oxide-semiconductor Q10, metal-oxide-semiconductor Q11, there are two metal-oxide-semiconductors, respectively metal-oxide-semiconductor for another group of metal-oxide-semiconductor tool The drain electrode connection of Q12 and metal-oxide-semiconductor Q13, metal-oxide-semiconductor Q9 are separately connected the electric current of LED lamp unit one (11) and LED lamp unit four (14) Output end, the drain electrode connection of metal-oxide-semiconductor Q10 are separately connected the electric current output of LED lamp unit two (12) and LED lamp unit five (15) End, the drain electrode of metal-oxide-semiconductor Q11 are separately connected the current output terminal of LED lamp unit three (13) and LED lamp unit six (16), metal-oxide-semiconductor The current output terminal of drain electrode connection LED lamp unit five (15) of Q12, drain electrode connection LED lamp unit six (16) of metal-oxide-semiconductor Q13 Current output terminal, the grid of metal-oxide-semiconductor Q9, the grid of metal-oxide-semiconductor Q10, the grid of metal-oxide-semiconductor Q11, metal-oxide-semiconductor Q12 grid and metal-oxide-semiconductor The grid of Q13 is separately connected the control output end of control chip (8), the source electrode of metal-oxide-semiconductor Q9, the source electrode of metal-oxide-semiconductor Q10, metal-oxide-semiconductor The source electrode of the source electrode of Q11, the source electrode of metal-oxide-semiconductor Q12 and metal-oxide-semiconductor Q13 is separately connected resistance R19.