CN101420804A - High power LED lamp driving power source and combination of matched lamp - Google Patents

Abstract

The invention discloses a combination of a drive power supply of a high-power LED street lamp and the matching lamp thereof. The combination comprises the drive power supply and a lamp combination circuit, and is characterized in that the drive power supply consists of a filter and rectification circuit, a half-bridge inversion circuit, a constant power control circuit and an inductive current-limiting circuit; 220V alternating current in power frequency is input to the input terminal of the filter and rectification circuit; the inductive current-limiting circuit consists of more than one high-frequency inductor jointly; the lamp combination circuit consists of more than one path of LED; each path of LED consists of two strings of LED lamps; the two strings of LED lamps are reversely connected in parallel to form a path of lamp combination circuit; and each string of LED lamp is formed by connecting more than one high-power LED in series. The combination circuit of the drive power supply of the high-power LED lamp and the matching lamp thereof obtained by the invention has the advantages of reasonable design, simple circuit, stable application of the combination of the drive power supply and the matching lamp thereof, good constant power, input power factor of the power supply over 0.95, efficiency over 0.97, high reliability, long service life and the like, and can be widely applied to various places illuminated by utilizing the high-power LED lamps.

Description

The combination of high power LED lamp driving power source and matched lamp thereof

Technical field:

The present invention relates to the combination of a kind of high power LED lamp driving power source and matched lamp thereof, particularly a kind of power frequency 90V-260V that can adapt to exchanges input, the output services voltage combination greater than the high power LED lamp driving power source and the matched lamp thereof of 3.8V high-frequency pulse voltage.

Background technology:

Present existing high-capacity LED lamp generally all adopts AC-DC to add the work of constant-current driving lamp, because this technical route needs a Switching Power Supply that alternating current is become direct current and then comes the work of driving LED lamp through the mode of constant current, because complex circuit, more failure rate height of the element that adopts and the reliability of using are affected, again because the loss meeting of the middle transition link of technical route influences the conversion efficiency of power supply, thereby can cause the decline of power source integral efficient, the input power factor of common Switching Power Supply is about about 0.6, efficient is about about 0.8, input power factor and efficient to be further improved and more cost certainly will be needed to increase, consequently to face reliability problems, further to the combining form analysis of the lamp of cooperation with it, the combining form poor fault tolerance of this lamp, usually become one group after adopting the series connection of plurality of LEDs lamp, the LED lamp is looked watt level and is made up of many groups lamp string usually, be connected to power supply then, suppose that a certain lamp damages other lamps on the same group and all can extinguish, this phenomenon is unallowed in LED lamp actual motion.

Summary of the invention:

The objective of the invention is in order to solve the deficiency of product in the above-mentioned prior art, and provide a kind of and can adapt to that power frequency 90V-260V exchanges input, High Power Factor, high conversion efficiency, has constant output characteristic, defencive function is perfect, the zmodem of lamp combination, output services voltage be greater than the combination of the high power LED lamp driving power source and the matched lamp thereof of 3.8V high-frequency pulse voltage.

For achieving the above object, a kind of high-capacity LED streetlamp driving power supply of the present invention's design and the combination of matched lamp thereof, it comprises driving power and lamp combinational circuit, it is characterized in that driving power is by filter rectifier, half-bridge inversion circuit, firm power control circuit, the current limit by inductance circuit is formed, the input input power frequency 220V alternating current of filter rectifier; The current limit by inductance circuit is formed jointly by comprising more than one high-frequency inductor, the lamp combinational circuit is made up of the LED that comprises more than a tunnel, every paths of LEDs is made up of two string LED lamps, two string LED lamp reverse parallel connections constitute a street lamp combinational circuit, and every string LED lamp is composed in series by more than one High Power LED LED; The other end that is connected to an end, the high-frequency inductor of the secondary N2 of high frequency transformer T after one end of high-frequency inductor jointly links to each other links to each other with a end of each lamp group of LED respectively; The a-a end of each street lamp group is connected to the other end of the secondary N2 of high frequency transformer T after common linking to each other.

Described filter rectifier is by fuse FU, capacitor C 0, C0a, C1, C2, CY1, CY2, differential mode inductance L, common mode inductance EMI, piezo-resistance VR, the common filter rectifier of forming a kind of routine of rectifier bridge heap BR, wherein capacitor C 0, the C0a two ends connect input ac power L end respectively, the N end, capacitor C 1, by differential mode inductance L, fuse FU links to each other with input ac power respectively, input ac power by common mode inductance EMI respectively with piezo-resistance VR, capacitor C 2, the pin BR1 of rectifier bridge heap BR, pin BR2, capacitor C Y1, CY2 one end joins, capacitor C Y1, the CY2 other end is connected to ground PE jointly, the positive direct-current electricity (V+) of the pin BR2 output ripple of rectifier bridge heap BR, the negative direct current GND of pin BR4 output.

Described half-bridge inversion circuit is by integrated circuit U1, resistance R 1, R2, R3, R4, R5, R6, R7, R8, R9, R13, R14, capacitor C 3, C4, C5, C6, C7, C8, C9, C10, C11, C12, C13, CY3, CY4, diode D1, D2, D3, D4, D5, D6, voltage stabilizing didoe DW, unidirectional controllable silicon S CR, field effect transistor Q1, Q2, high frequency transformer T forms jointly, wherein resistance R 1, R2, a termination positive direct-current electricity (V+), the other end of resistance R 1 is by the negative pole of capacitor C 3 with voltage stabilizing didoe DW, the other end of resistance R 2 is by diode D1 and capacitor C 4 positive poles, C5, integrated circuit U1 pin U1-1 links to each other, the positive pole of voltage stabilizing didoe DW, capacitor C 4 negative poles, C5, be connected to GND after integrated circuit U1 pin U1-2 links to each other and form start-up circuit; An end is connected with the pin U1-3 of U1 after R3, the C6 parallel connection, another termination GND forms regularly breaking circuit; Unidirectional controllable silicon S CR, diode D5, D6, resistance R 7, R8, R9, capacitor C 7, C10, C11 form protective circuit, and the control utmost point that wherein anode of unidirectional controllable silicon S CR links to each other with integrated circuit U1 pin U1-1, the negative electrode of unidirectional controllable silicon S CR meets GND, unidirectional controllable silicon S CR extremely links to each other with the S of integrated circuit U1 pin U1-4, pin U1-6, field effect transistor Q2 respectively by diode D5, D6, resistance R 8, R7, R9, capacitor C 7, C10, C11; Resistance R 4, R5, R6, R13, R14, field effect transistor Q1, Q2, capacitor C 12, C13, high frequency transformer T forms switch inversion output circuit, wherein integrated circuit U1 pin U1-7, pin U1-5 is respectively by resistance R 4, R5 and field effect transistor Q1, the G of Q2 is extremely continuous, the S of integrated circuit U1 pin U1-6 and field effect transistor Q1, the D utmost point of Q2, the elementary N1 end of high frequency transformer T links to each other, the elementary N2 end of high frequency transformer T is by capacitor C 12, C13, resistance R 13, R14 respectively with positive direct-current electricity (V+), GND connects, the D utmost point of field effect transistor Q1 connects positive direct-current electricity (V+), the S utmost point of field effect transistor Q2 meets GND by resistance R 6, resistance R 7 is connected to the pin U1-4 of U1; Capacitor C 9, diode D3, D4 form charge pump circuit, wherein the elementary N1 of high frequency transformer T end by capacitor C 9 link to each other with diode D3 positive pole, D4 negative pole respectively, diode D3 negative pole meets GND, the D4 positive pole meets integrated circuit U1 pin U1-1; Diode D2, capacitor C 8 are the Bootstrap element, wherein diode D2 positive pole meets integrated circuit U1 pin U1-1, diode D2 negative pole meets integrated circuit U1 pin U1-8.

Described firm power control circuit is by photoelectrical coupler U2, accurate three terminal regulator U3, resistance R 10, R11, R12, capacitor C 14, C15, diode D7 forms jointly, and wherein the positive pole of diode D7 connects the N2-1 end of the secondary N2 of high frequency transformer T, diode D7 negative pole is by resistance R 10, the R11 voltage signal passes through resistance R 10 through capacitor C 15 filtering respectively as the sampled signal of power output, R11, capacitor C 15 positive poles meet photoelectrical coupler U2 pin U2-1 and accurate three terminal regulator U3 pin R respectively, capacitor C 14, resistance R 12 1 ends, capacitor C 14, resistance R 12 other ends meet accurate three terminal regulator U3 pin K respectively, photoelectrical coupler U2 pin U2-2, three terminal regulator U3 pin A, the negative pole of capacitor C 15, the N2-2 end of the secondary N2 of high frequency transformer T, photoelectrical coupler U2 pin U2-3, pin U2-4 meets GND respectively, integrated circuit U1 pin U1-4.

Described current limit by inductance circuit, L1 to L12 forms by high-frequency inductor, high-frequency inductor can adopt one on demand to forming jointly more than 12 high-frequency inductor, and the L-2 end that wherein L-1 of high-frequency inductor L1 to L12 end is common is connected to an end, the high-frequency inductor L1 to L12 of the secondary N2 of high frequency transformer T after linking to each other links to each other with a end of each lamp group of LED respectively.

Described lamp combinational circuit forms one the tunnel jointly by High Power LED LED1 to LED6, also can adopt one to N LED on demand; Wherein LED 1 negative pole connects the LED2 positive pole, the LED2 negative pole connects the LED3 positive pole, the rest may be inferred constitutes a lamp string for LEDn, the rest may be inferred also constitutes a lamp string after connecting to LEDn in the same way for LED 4, LED5, LED6, again two lamp string reverse parallel connections are constituted a street lamp combinational circuit, a LED lamp string number is strange, even number is not limit but two a lamp string number must be identical, and the lamp group links to each other with the L-2 end of high-frequency inductor L1 to L12 respectively, the a-a end of lamp group is connected to the N2-2 end of the secondary N2 of high frequency transformer T after common linking to each other.

The high power LED lamp driving power source of the present invention's design and the combinational circuit of matched lamp thereof, have reasonable in design, simple in structure, driving power and its matched lamp the applied in any combination stability of characteristics, have preferably constant power characteristics, power supply input power factor greater than 0.95, efficient is greater than 0.97, advantages such as reliability height, long service life can be widely used in the occasion that various high-powered LED lamps throw light on.

Description of drawings:

The invention will be further described below in conjunction with accompanying drawing.

Fig. 1 is a functional-block diagram of the present invention;

Fig. 2 is circuit theory diagrams of the present invention.

Wherein: frame of broken lines 1 is that conventional filter rectifier, frame of broken lines 2 is lamp combinational circuit for firm power control circuit, frame of broken lines 4 for current limit by inductance circuit, frame of broken lines 5 for half-bridge inversion circuit, frame of broken lines 3 among Fig. 2.

Embodiment:

Embodiment:

As shown in Figure 1, the high power LED lamp driving power source that present embodiment provides and the combination of matched lamp thereof, it comprises driving power and lamp combinational circuit, wherein driving power is by filter rectifier 1, half-bridge inversion circuit 2, firm power control circuit 3, current limit by inductance circuit 4 is formed, input 6 input power frequency 220V alternating currents.

Shown among Fig. 21, described filter rectifier 1 is by fuse FU, capacitor C 0, C0a, C1, C2, CY1, CY2, differential mode inductance L, common mode inductance EMI, piezo-resistance VR, the common filter rectifier of forming a kind of routine of rectifier bridge heap BR, wherein capacitor C 0, the C0a two ends connect input ac power L end respectively, the N end, capacitor C 1, by differential mode inductance L, fuse FU links to each other with input ac power respectively, input ac power by common mode inductance EMI respectively with piezo-resistance VR, capacitor C 2, the pin BR1 of rectifier bridge heap BR, pin BR2, capacitor C Y1, CY2 one end joins, capacitor C Y1, the CY2 other end is connected to ground PE jointly, the positive direct-current electricity (V+) of the pin BR2 output ripple of rectifier bridge heap BR, the negative direct current GND of pin BR4 output, wherein, 220 volts of alternating-current power supplies of input power frequency are respectively by port L, N inserts; Capacitor C 0, C0a, C1, CY1, CY2 inductance L are formed π type differential mode filter, inductance EMI, C2, composition common-mode filter, intermediate contact ground connection PE after the series connection of capacitor C Y1, CY2 wherein, the purpose that filter circuit is set is to guarantee that driving power can obtain good electromagnetic compatibility characteristic; The positive direct-current electricity (V+) of the pin BR2 output ripple of rectifier bridge heap BR, the negative direct current GND of pin BR4 output.

Shown among Fig. 22, half-bridge inversion circuit 2 contains integrated circuit U1, field effect transistor Q1, Q2, high frequency transformer T, diode, reaches other resistance, the schematic diagram that electric capacity is formed.

Described half-bridge inversion circuit 2 is by integrated circuit U1, resistance R 1, R2, R3, R4, R5, R6, R7, R8, R9, R13, R14, capacitor C 3, C4, C5, C6, C7, C8, C9, C10, C11, C12, C13, CY3, CY4, diode D1, D2, D3, D4, D5, D6, voltage stabilizing didoe DW, unidirectional controllable silicon S CR, field effect transistor Q1, Q2, high frequency transformer T forms jointly, wherein resistance R 1, R2, a termination positive direct-current electricity (V+), the other end of resistance R 1 is by the negative pole of capacitor C 3 with voltage stabilizing didoe DW, the other end of resistance R 2 is by diode D1 and capacitor C 4 positive poles, C5, integrated circuit U1 pin U1-1 links to each other, the positive pole of voltage stabilizing didoe DW, capacitor C 4 negative poles, C5, be connected to GND after integrated circuit U1 pin U1-2 links to each other and form start-up circuit; An end is connected with the pin U1-3 of U1 after R3, the C6 parallel connection, another termination GND forms regularly breaking circuit; Unidirectional controllable silicon S CR, diode D5, D6, resistance R 7, R8, R9, capacitor C 7, C10, C11 form protective circuit, and the control utmost point that wherein anode of unidirectional controllable silicon S CR links to each other with integrated circuit U1 pin U1-1, the negative electrode of unidirectional controllable silicon S CR meets GND, unidirectional controllable silicon S CR extremely links to each other with the S of integrated circuit U1 pin U1-4, pin U1-6, field effect transistor Q2 respectively by diode D5, D6, resistance R 8, R7, R9, capacitor C 7, C10, C11; Resistance R 4, R5, R6, R13, R14, field effect transistor Q1, Q2, capacitor C 12, C13, high frequency transformer T forms switch inversion output circuit, wherein integrated circuit U1 pin U1-7, pin U1-5 is respectively by resistance R 4, R5 and field effect transistor Q1, the G of Q2 is extremely continuous, the S of integrated circuit U1 pin U1-6 and field effect transistor Q1, the D utmost point of Q2, the elementary N1 end of high frequency transformer T links to each other, the elementary N2 end of high frequency transformer T is by capacitor C 12, C13, resistance R 13, R14 respectively with positive direct-current electricity (V+), GND connects, the D utmost point of field effect transistor Q1 connects positive direct-current electricity (V+), the S utmost point of field effect transistor Q2 meets GND by resistance R 6, resistance R 7 is connected to the pin U1-4 of U1; Capacitor C 9, diode D3, D4 form charge pump circuit, wherein the elementary N1 of high frequency transformer T end by capacitor C 9 link to each other with diode D3 positive pole, D4 negative pole respectively, diode D3 negative pole meets GND, the D4 positive pole meets integrated circuit U1 pin U1-1; Diode D2, capacitor C 8 are the Bootstrap element, wherein diode D2 positive pole meets integrated circuit U1 pin U1-1, diode D2 negative pole meets integrated circuit U1 pin U1-8.

Resistance R 1, R2, capacitor C 3, C4, C5, diode D1, voltage-stabiliser tube DW form start-up circuit among the figure, and integrated circuit U1 starts working when the voltage of the pin U1-1 of integrated circuit U1 reaches starter gate valve threshold voltage 11.8V; An end is connected with the pin U1-3 of U1 after R3, the C6 parallel connection, another termination GND forms regularly breaking circuit; Unidirectional controllable silicon S CR, diode D5, D6, resistance R 7, R8, R9, capacitor C 7, C11 form protective circuit, when the voltage of the pin U1-4 of U1 surpasses 0.5V, unidirectional controllable silicon S CR conducting U1 is closed; Resistance R 4, R5, R6, R13, R14, field effect transistor Q1, Q2, capacitor C 12, C13, high frequency transformer T forms the switch inversion output circuit, switching signal is by the pin U1-5 of U1, pin U1-7 offers Q2, Q1, make Q2, Q1 takes turns conducting, elementary N1 by high frequency transformer T realizes capacitor C 12, C13 discharges and recharges, be about the 30KH high-frequency pulse voltage of 12V in the secondary N2 amplitude of inducing, R6 is that current limliting is picked up then resistance, and current signal is converted to the pin U1-4 that voltage signal offers U1 by R7, when the voltage of the pin U1-4 of U1 surpasses 0.5V, unidirectional controllable silicon S CR conducting U1 is closed; Capacitor C 9, diode D3, D4 form charge pump circuit export to integrated circuit U1 pin U1-1, when providing work for it keep voltage, be that Bootstrap element, its effect are that high-side driver to integrated circuit U1 provides power supply to guarantee that U1 pin U1-7 can reliably working with loss, diode D2, the capacitor C 8 of further reduction U1.

Shown among Fig. 23, firm power control circuit 3, contain photoelectrical coupler U2, accurate three terminal regulator U3, and other diode, resistance, the schematic diagram that electric capacity is formed.

Described firm power control circuit 3 is by photoelectrical coupler U2, accurate three terminal regulator U3, resistance R 10, R11, R12, capacitor C 14, C15, diode D7 forms jointly, and wherein the positive pole of diode D7 connects the N2-1 end of the secondary N2 of high frequency transformer T, diode D7 negative pole is by resistance R 10, the R11 voltage signal passes through resistance R 10 through capacitor C 15 filtering respectively as the sampled signal of power output, R11, capacitor C 15 positive poles meet photoelectrical coupler U2 pin U2-1 and accurate three terminal regulator U3 pin R respectively, capacitor C 14, resistance R 12 1 ends, capacitor C 14, resistance R 12 other ends meet accurate three terminal regulator U3 pin K respectively, photoelectrical coupler U2 pin U2-2, three terminal regulator U3 pin A, the negative pole of capacitor C 15, the N2-2 end of the secondary N2 of high frequency transformer T, photoelectrical coupler U2 pin U2-3, pin U2-4 meets GND respectively, integrated circuit U1 pin U1-4.

Among the figure, the positive pole of diode D7 is connected in the N2-1 end of the secondary N2 of high frequency transformer T, its N2-2 end is for simulating ground, its negative pole output one is respectively passed through resistance R 10 through capacitor C 15 filtering as the sampled signal of power output with the peak voltage signal that output voltage changes behind diode D7 rectification, R11 offers photoelectrical coupler U2 and accurate three terminal regulator U3 dividing potential drop comes the voltage of control integrated circuit U1 pin U1-4 promptly to be equivalent to change the switching frequency of inversion, and the leakage inductance of having utilized high frequency transformer T tends towards stability lamp load power within the specific limits substantially.

Embodiment four:

Shown among Fig. 24, current limit by inductance circuit 4, containing high-frequency inductor L1-L12 forms, high-frequency inductor L1-L12, can adopt one on demand to forming jointly more than 12 high-frequency inductor, the L-2 end that wherein L-1 of high-frequency inductor L1-L12 end is common is connected to an end, the high-frequency inductor L1-L12 of the secondary N2 of high frequency transformer T after linking to each other links to each other with a end of each lamp group of LED respectively.The sensibility reciprocal of high-frequency inductor is bigger to the influence of lamp current, and its inductance value can be calculated by following formula in concrete enforcement:

$Z=\frac{\mathrm{UO}-\mathrm{UL}}{\mathrm{IL}}$ $L=\frac{\mathrm{<figure-callout\; id="2"\; label="Z"\; filenames="A200810122241E00131.png,A200810122241E00141.png"\; state="\{\{state\}\}">Z</figure-callout>}}{2\mathrm{\&Pi;f}}$

Z in the formula: output loop impedance (Ω), UO: output voltage (V), UL: modulating voltage (V)

L: inductance value (mh), f: operating frequency (khz)

Embodiment five:

Shown among Fig. 25, lamp combinational circuit 5 contains the common street lamp combinational circuit of forming of High Power LED LED1-LED3 and LED4-LED6, at this, also can adopt one to n LED on demand.Wherein LED 1 negative pole connects the LED2 positive pole, the LED2 negative pole connects the LED3 positive pole, the rest may be inferred constitutes a lamp string for LEDn, LED 4, LED5, the rest may be inferred also constitutes a lamp string after connecting to LEDn in the same way for LED6, again two lamp string reverse parallel connections are constituted a street lamp combinational circuit, a LED lamp string number is strange, even number is not limit, but two a lamp string number must be identical, and a of lamp group 1 holds to a end of lamp group 12 and links to each other with the L-2 end of high-frequency inductor L1-L12 respectively, the a-a of lamp group 1 holds the N2-2 end that is connected to the secondary N2 of high frequency transformer T to the a-a end of lamp group 12 after common linking to each other.Described lamp group also can form one the road on demand to more than ten two tunnel lamp group.

Among the figure, LED 1 negative pole connects LED2 positive pole, LED2 negative pole and connects that LED3 is anodal to constitute a lamp string (can adopt one to n LED on demand), also constitute after LED 4, LED5, LED6 connect in the same way a that a lamp string (can adopt one to n LED on demand) constitutes two lamp string reverse parallel connections one street lamp combinational circuit, lamp group 1 again hold to a end of lamp group 12 link to each other with the L-2 end of high-frequency inductor L1-L12 respectively, the a-a of lamp group 1 holds to the a-a end of lamp group 12 N2-2 that is connected to the secondary N2 of high frequency transformer T after continuous jointly to hold.

By output voltage in being combined in of this circuit example of the present invention is that 12V, LED lamp group are a string totally 2 string configurations of 3 lamps, connect ten two tunnel lamp combination, also can adopt according to application need and one to multiplely connect one to multiple in ten two tunnel lamp group in three lamp strings (strange, even number is not limit but two a lamp string number must be identical).The lamp array output power bracket of example of the present invention is 2W-75W, the basic needs that satisfy driving less than 75W LED lamp, and design maximum power output of the present invention is 150W, the basic satisfied needs that drive high-power LED street lamp, Tunnel Lamp, flood light.Even owing to so the few in use indivedual LED of lamp string LED quantity of combination occur and damage the combinational circuit that also can not influence illuminating effect the present invention example matched lamp of putting in order lamp to have fault-tolerance preferably bad.

Claims (6)

1, the combination of a kind of high-capacity LED streetlamp driving power supply and matched lamp thereof, it comprises driving power and lamp combinational circuit (5), it is characterized in that driving power is by filter rectifier (1), half-bridge inversion circuit (2), firm power control circuit (3), current limit by inductance circuit (4) is formed, input (6) the input power frequency 220V alternating current of filter rectifier (1); Current limit by inductance circuit (4) is formed jointly by comprising more than one high-frequency inductor, lamp combinational circuit (5) is made up of the LED that comprises more than a tunnel, every paths of LEDs is made up of two string LED lamps, two string LED lamp reverse parallel connections constitute a street lamp combinational circuit, and every string LED lamp is composed in series by more than one High Power LED LED; The other end that is connected to an end, the high-frequency inductor of the secondary N2 of high frequency transformer T after one end of high-frequency inductor jointly links to each other links to each other with a end of each lamp group of LED respectively; The a-a end of each street lamp group is connected to the other end of the secondary N2 of high frequency transformer T after common linking to each other.

2, the combination of high-capacity LED streetlamp driving power supply according to claim 1 and matched lamp thereof, it is characterized in that described filter rectifier (1) is by fuse FU, capacitor C 0, C0a, C1, C2, CY1, CY2, differential mode inductance L, common mode inductance EMI, piezo-resistance VR, the common filter rectifier of forming a kind of routine of rectifier bridge heap BR, wherein capacitor C 0, the C0a two ends connect input ac power L end respectively, the N end, capacitor C 1, by differential mode inductance L, fuse FU links to each other with input ac power respectively, input ac power by common mode inductance EMI respectively with piezo-resistance VR, capacitor C 2, the pin BR1 of rectifier bridge heap BR, pin BR2, capacitor C Y1, CY2 one end joins, capacitor C Y1, the CY2 other end is connected to ground PE jointly, the positive direct-current electricity (V+) of the pin BR2 output ripple of rectifier bridge heap BR, the negative direct current GND of pin BR4 output.

3, the combination of high-capacity LED streetlamp driving power supply according to claim 1 and matched lamp thereof, it is characterized in that described half-bridge inversion circuit (2) is by integrated circuit U1, resistance R 1, R2, R3, R4, R5, R6, R7, R8, R9, R13, R14, capacitor C 3, C4, C5, C6, C7, C8, C9, C10, C11, C12, C13, CY3, CY4, diode D1, D2, D3, D4, D5, D6, voltage stabilizing didoe DW, unidirectional controllable silicon S CR, field effect transistor Q1, Q2, high frequency transformer T forms jointly, wherein resistance R 1, R2, a termination positive direct-current electricity (V+), the other end of resistance R 1 is by the negative pole of capacitor C 3 with voltage stabilizing didoe DW, the other end of resistance R 2 is by diode D1 and capacitor C 4 positive poles, C5, integrated circuit U1 pin U1-1 links to each other, the positive pole of voltage stabilizing didoe DW, capacitor C 4 negative poles, C5, be connected to GND after integrated circuit U1 pin U1-2 links to each other and form start-up circuit; An end is connected with the pin U1-3 of U1 after R3, the C6 parallel connection, another termination GND forms regularly breaking circuit; Unidirectional controllable silicon S CR, diode D5, D6, resistance R 7, R8, R9, capacitor C 7, C10, C11 form protective circuit, and the control utmost point that wherein anode of unidirectional controllable silicon S CR links to each other with integrated circuit U1 pin U1-1, the negative electrode of unidirectional controllable silicon S CR meets GND, unidirectional controllable silicon S CR extremely links to each other with the S of integrated circuit U1 pin U1-4, pin U1-6, field effect transistor Q2 respectively by diode D5, D6, resistance R 8, R7, R9, capacitor C 7, C10, C11; Resistance R 4, R5, R6, R13, R14, field effect transistor Q1, Q2, capacitor C 12, C13, high frequency transformer T forms switch inversion output circuit, wherein integrated circuit U1 pin U1-7, pin U1-5 is respectively by resistance R 4, R5 and field effect transistor Q1, the G of Q2 is extremely continuous, the S of integrated circuit U1 pin U1-6 and field effect transistor Q1, the D utmost point of Q2, the elementary N1 end of high frequency transformer T links to each other, the elementary N2 end of high frequency transformer T is by capacitor C 12, C13, resistance R 13, R14 respectively with positive direct-current electricity (V+), GND connects, the D utmost point of field effect transistor Q1 connects positive direct-current electricity (V+), the S utmost point of field effect transistor Q2 meets GND by resistance R 6, resistance R 7 is connected to the pin U1-4 of U1; Capacitor C 9, diode D3, D4 form charge pump circuit, wherein the elementary N1 of high frequency transformer T end by capacitor C 9 link to each other with diode D3 positive pole, D4 negative pole respectively, diode D3 negative pole meets GND, the D4 positive pole meets integrated circuit U1 pin U1-1; Diode D2, capacitor C 8 are the Bootstrap element, wherein diode D2 positive pole meets integrated circuit U1 pin U1-1, diode D2 negative pole meets integrated circuit U1 pin U1-8.

4, the combination of high-capacity LED streetlamp driving power supply according to claim 1 and matched lamp thereof, it is characterized in that described firm power control circuit is by photoelectrical coupler U2, accurate three terminal regulator U3, resistance R 10, R11, R12, capacitor C 14, C15, diode D7 forms jointly, and wherein the positive pole of diode D7 connects the N2-1 end of the secondary N2 of high frequency transformer T, diode D7 negative pole is by resistance R 10, the R11 voltage signal passes through resistance R 10 through capacitor C 15 filtering respectively as the sampled signal of power output, R11, capacitor C 15 positive poles meet photoelectrical coupler U2 pin U2-1 and accurate three terminal regulator U3 pin R respectively, capacitor C 14, resistance R 12 1 ends, capacitor C 14, resistance R 12 other ends meet accurate three terminal regulator U3 pin K respectively, photoelectrical coupler U2 pin U2-2, three terminal regulator U3 pin A, the negative pole of capacitor C 15, the N2-2 end of the secondary N2 of high frequency transformer T, photoelectrical coupler U2 pin U2-3, pin U2-4 meets GND respectively, integrated circuit U1 pin U1-4.

5, the combination of high-capacity LED streetlamp driving power supply according to claim 1 and matched lamp thereof, it is characterized in that described current limit by inductance circuit (4), L1 to L12 forms by high-frequency inductor, and the L-2 end that wherein L-1 of high-frequency inductor L1 to L12 end is common is connected to an end, the high-frequency inductor L1 to L12 of the secondary N2 of high frequency transformer T after linking to each other links to each other with a end of each lamp group of LED respectively.

6, the combination of high-capacity LED streetlamp driving power supply according to claim 1 and matched lamp thereof is characterized in that described lamp combinational circuit (5) forms one the tunnel jointly by High Power LED LED1 to LED6; Wherein LED 1 negative pole connects the LED2 positive pole, the LED2 negative pole connects the LED3 positive pole, the rest may be inferred in the same way also constitutes a lamp string after connecting for LED 4, LED5, LED6, again two lamp string reverse parallel connections are constituted a street lamp combinational circuit, the lamp group links to each other with the L-2 end of high-frequency inductor L1 to L12 respectively, the a-a end of lamp group is connected to the N2-2 end of the secondary N2 of high frequency transformer T after common linking to each other.

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