CN205336573U

CN205336573U - Compatible type emitting diode drive power supply

Info

Publication number: CN205336573U
Application number: CN201521036632.XU
Authority: CN
Inventors: 不公告发明人
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-12-14
Filing date: 2015-12-14
Publication date: 2016-06-22
Anticipated expiration: 2025-12-14

Abstract

The utility model provides a compatible type emitting diode drive power supply, it includes transformer T1, electric capacity X1 is by 4 ultrafast recovery diode BD1, BD2, BD3, BD4, the bridge type rectifier circuit that constitutes to reach ultrafast recovery diode D1, D2, MOS manages Q1, inductance L1 and PWM pulse width control signal input circuit IC, according to the emitting diode drive power supply that this electrical circuitry was made, have and directly connect each national line voltage, also can directly connect traditional fluorescence lamp inductive ballast and traditional fluorescence lamp electronic ballast's output, make traditional ballast, the biggest energy -conservation of performance and usable value, and not by the abandonment, the lamps and lanterns finished product mounting means of making follows traditional fluorescence lamp the same, it is fairly convenient to install, the utility model discloses an emitting diode drive power supply product quality reliability that the principle was made is high, and the safety in utilization is good, and the cost of manufacture is low, realizes outputization easily, can produce the power that various power sum voltage electric currents can be adjusted moreover as required, and product yield is high, has the superiority that other compatible type emitting diode drive power supply and ordinary emitting diode drive power supply can not compare.

Description

A kind of compatible type LED driving power

Technical field

This utility model relates to lighting and drives field of power supplies, especially relates to the input of a kind of civil power and the LED driving power of compatible conventional fluorescent fluorescent tube ballast。

Background technology

At present, development stability and maturation due to LED source technology, common light emitting diode light source has exceeded common traditional fluorescent lamp in brightness and life-span and environmental protection, owing to LED source contrasts traditional fluorescent lamp energy saving effect clearly, its traditional fluorescent lamp of replacement is the inexorable trend of historical development, LED driving power then provides stable electric current for the core component of lumination of light emitting diode, different line voltage networks has fabulous adaptability and stability, therefore the LED lamp using LED driving power replaces conventional light source to become upsurge。

The best way is exactly directly use the LED source with LED driving power to replace conventional light source, but traditional fluorescent lighting fixture is all with ballast, and it is fixed on inside lamp bracket, the signal of its output high voltagehigh frequency rate drives it luminous, and common light emitting diode self-ballasted light source accesses high voltagehigh frequency rate signal and light fixture or conventional fluorescent ballast can be caused to burn, so cannot directly replace up, it is accomplished by transforming to access new LED source to original circuit if replaced, and improvement cost is at a relatively high, ballast equipment originally also cannot utilize and go out of use, therefore LED source replaces conventional light source to be extremely limited。

For this, the drive circuit of LED source is carried out a series of improvement by the technical staff of the industry, and power method drops in such as electric capacity, doube bridge heap technique etc.。

Electric capacity drop power method be utilize electric capacity capacitive reactance acting but do not produce power and reach to drop the purpose of power, but electric capacity accesses in circuit just has LC resonance to produce always, power is increasing down to scaling loss circuit over time, use doube bridge can shield the start-up capacitance of conventional fluorescent ballast thus eliminating the generation of igniting high pressure, but major part conventional fluorescent ballast needs start-up capacitance ability normal ignition, the masking of start-up capacitance causes the circuit can not normal ignition, therefore also cannot use, and four lines access process of producing product is also become extremely complex, the small part power supply compatible portioned product on the market of ability energy is only had for this。

Utility model content

Drawbacks described above for prior art, it is provided that a kind of compatible type LED driving power。

This utility model solves its technical problem and be the technical scheme is that

A kind of compatible type LED driving power, it includes it and includes transformator T1, electric capacity X1, the bridge rectifier being made up of 4 Ultrafast recovery diodes BD1, BD2, BD3, BD4, and Ultrafast recovery diode D1, D2, metal-oxide-semiconductor Q1, inductance L1 and PWM pulse-width control signal input circuit IC；Described transformator T1 is primary, electric capacity X1 concatenation is followed by civil power or fluorescent lamp ballast outfan, described 4 Ultrafast recovery diode BD1, BD2, BD3, the bridge rectifier input of BD4 composition is connected in parallel on electric capacity X1 two ends, with described bridge rectifier outfan connecing after described Ultrafast recovery diode D2 and switch metal-oxide-semiconductor Q1 concatenation, described inductance L1 connects with external light emitting diode and is then attempted by described Ultrafast recovery diode D2 two ends, described Ultrafast recovery diode D1 negative electrode is connected to the control pole gate pole of switch metal-oxide-semiconductor Q1, it is simultaneously connected with the pwm signal outfan of PWM pulse-width control signal input circuit IC；T1 level of transformator then powers to the control pole gate pole of switch metal-oxide-semiconductor Q1 by Ultrafast recovery diode D1, and according to the switch metal-oxide-semiconductor Q1 position connected, common anode circuit is according to positive direction wiring, and common cathode circuit is then according to reverse wiring。

Preferably, transformator T1 is high frequency transformer, has at least two or more winding, and the big I regulating the transformator main winding number of turn and sensibility reciprocal changes the size of current of circuit。

Preferably, electric capacity X1 constitutes resonant tank with transformator, for fast start circuit。

Preferably, the bridge rectifier being made up of 4 Ultrafast recovery diodes BD1, BD2, BD3, BD4, it is possible to AC signal is changed into DC signal output to load circuit。

Preferably, T1 level of transformator, speed-sensitive switch metal-oxide-semiconductor Q1, Ultrafast recovery diode D1, component frequency electronic switching circuit, switch selects in below 100HZ and 1KHz break-make carried out above respectively, is used for distinguishing civil power input or electric ballast input。

Preferably, PWM pulse-width control signal input circuit IC, this PWM signal generator can match with any municipal power constant current control chip without any particular/special requirement, and is arbitrary power supply PWM chip signal generator on market。

The beneficial effects of the utility model are:

1. LED driving power reliability high security of the present utility model is good, the input of global general-use line voltage can be connect, compatible all Inductive ballasts, can also compatible major part electric ballast without transforming original circuit, original ballast can be continuing with, and decreases unnecessary waste；

2. this utility model solves civil power input and connects two power lines, Europe rule electronics, Inductive ballast output connect four power lines and North America electric ballast exports the reunification connecing two power lines, adopt two power line tie-in lines without exception, producing only two power lines of weldering, production technology and material cost all will greatly reduce；

3. this utility model is under the work premise only using electric ballast to export, and power supply cost is extremely low so that the holistic cost of LED lamp can compare favourably with conventional fluorescent, and cost performance is at a relatively high；

4. this utility model to municipal power constant current control chip without any special requirement, it is possible to matching with any municipal power constant current control chip, this is that other major part company compatibility power supplys are unreachable；

5. product element all adopts market general-purpose device, need not for stock, it is easy to bought, it is easy to producing, therefore cost can control to minimum, brings the highest income to company。

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the utility model is described in further detail:

Fig. 1 is that this utility model light emitting diode common anode wiring drives power principle figure；

Fig. 2 is that this utility model light emitting diode common cathode wiring drives power principle figure；

The light emitting diode common anode wiring that Fig. 3 is this utility model electric ballast drives power principle figure；

The light emitting diode common cathode wiring that Fig. 4 is this utility model electric ballast drives power principle figure；

The light emitting diode that Fig. 5 is this utility model electric ballast simplifies driving power principle figure most；

Fig. 6 is the non-isolated common anode power principle figure on the external common market of this utility model。

Detailed description of the invention

Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is further described；

As shown in Figure 1 be a kind of compatible type LED driving power, it includes it and includes transformator T1, electric capacity X1, the bridge rectifier being made up of 4 Ultrafast recovery diodes BD1, BD2, BD3, BD4, and Ultrafast recovery diode D1, D2, metal-oxide-semiconductor Q1, inductance L1 and PWM pulse-width control signal input circuit IC；Described transformator T1 is primary, electric capacity X1 concatenation is followed by civil power or fluorescent lamp ballast outfan, described 4 Ultrafast recovery diode BD1, BD2, BD3, the bridge rectifier input of BD4 composition is connected in parallel on electric capacity X1 two ends, with described bridge rectifier outfan connecing after described Ultrafast recovery diode D2 and switch metal-oxide-semiconductor Q1 concatenation, described inductance L1 connects with external light emitting diode and is then attempted by described Ultrafast recovery diode D2 two ends, described Ultrafast recovery diode D1 negative electrode is connected to the control pole gate pole of switch metal-oxide-semiconductor Q1, it is simultaneously connected with the pwm signal outfan of PWM pulse-width control signal input circuit IC；T1 level of transformator then powers to the control pole gate pole of switch metal-oxide-semiconductor Q1 by Ultrafast recovery diode D1。

In circuit, electric capacity X1 constitutes resonant tank with transformator, for fast start circuit。

In circuit, the bridge rectifier being made up of 4 Ultrafast recovery diodes BD1, BD2, BD3, BD4, it is possible to AC signal is changed into DC signal output to load circuit。

In circuit, T1 level of transformator, speed-sensitive switch metal-oxide-semiconductor Q1, Ultrafast recovery diode D1, component frequency electronic switching circuit, switch selects in below 100HZ and 1KHz break-make carried out above respectively, is used for distinguishing civil power input or electric ballast input。

In circuit, by Ultrafast recovery diode D2, inductance L1, switch metal-oxide-semiconductor Q1, PWM pulse-width control signal input circuit IC, constitute switch buck constant-current circuit, work when city is electrically accessed and power to LED load。

Fig. 1 circuit, actual in electric ballast operating circuit and mains circuit, inductive ballast circuit is combined in conjunction with speed-sensitive switch conversion, selective under different initial conditions use corresponding electronic circuit and other circuit do not work, Fig. 1 is common anode connection circuit, Fig. 2 is then common cathode connection circuit on the contrary, can simplify according to actual functional capability: Fig. 1 is reduced to Fig. 3, Fig. 2 is reduced to Fig. 4, if need not judge that input is civil power or connects electric ballast, Fig. 3 and Fig. 4 can be reduced to Fig. 5, need separately to be used alone according to practical application, thus effectively reducing material, production cost etc.。

Circuit shown in Fig. 3, real work circuit during for this utility model compatible electronic ballast, including transformator T1, electric capacity X1, by 4 Ultrafast recovery diode BD1, BD2, BD3, the bridge rectifier of BD4 composition, Ultrafast recovery diode D1, switch metal-oxide-semiconductor Q1, described transformator T1 is primary, fluorescent lamp ballast outfan after electric capacity X1 concatenation, described 4 Ultrafast recovery diode BD1, BD2, BD3, the bridge rectifier input of BD4 composition is connected in parallel on X1 two ends, it is attempted by bridge rectifier outfan after described switch metal-oxide-semiconductor Q1 and light emitting diode series connection, Ultrafast recovery diode D1 negative electrode is connected to the control pole gate pole of switch metal-oxide-semiconductor Q1, T1 level of transformator then powers to the control pole gate pole of switch metal-oxide-semiconductor Q1 by Ultrafast recovery diode D1, certainly more additional protection circuit make whole circuit more safe and reliable。

Circuit as shown in Figure 5, real work circuit for the common non-isolated LED driving power in the external market of this utility model power supply, including transformator T1, electric capacity X1, by 4 Ultrafast recovery diode BD1, BD2, BD3, the bridge rectifier of BD4 composition, Ultrafast recovery diode D1, switch metal-oxide-semiconductor Q1, and by common bridge rectifier BG, Ultrafast recovery diode D2, inductance L1, non-isolated power supply common on the market that switch metal-oxide-semiconductor Q1 is constituted, with Fig. 1 the difference is that common bridge rectifiers many in circuit, this is mainly for utilizing existing resource on market simultaneously, need not transform and substantially just can access circuit and employ, thus effectively reducing stock and artificial, material cost。

During practical application, can be actually needed according to client, select the circuit diagram being suitable for, according to circuit diagram, make component list, then according to component list buying material, material produces after getting all the ready, and the LED driving power of such a applicable user's needs function is just produced, and is then charged in light fixture, no matter connect civil power input or connecing conventional fluorescent ballast outfan can directly replace up and employ, quite convenient and practical。

As it has been described above, be only this utility model circuit detailed description of the invention, it is impossible to be embodied as scope as limiting this utility model, all changes made according to this utility model claim and description and amendment, all in protection domain of the present utility model。

Claims

1. a compatible type LED driving power, it is characterized in that: it includes transformator T1, electric capacity X1, the bridge rectifier being made up of 4 Ultrafast recovery diodes BD1, BD2, BD3, BD4, and Ultrafast recovery diode D1, D2, metal-oxide-semiconductor Q1, inductance L1 and PWM pulse-width control signal input circuit IC；Described transformator T1 is primary, electric capacity X1 concatenation is followed by civil power or fluorescent lamp ballast outfan, described 4 Ultrafast recovery diode BD1, BD2, BD3, the bridge rectifier input of BD4 composition is connected in parallel on electric capacity X1 two ends, with described bridge rectifier outfan connecing after described Ultrafast recovery diode D2 and switch metal-oxide-semiconductor Q1 concatenation, described inductance L1 connects with external light emitting diode and is then attempted by described Ultrafast recovery diode D2 two ends, described Ultrafast recovery diode D1 negative electrode is connected to the control pole gate pole of switch metal-oxide-semiconductor Q1, it is simultaneously connected with the pwm signal outfan of PWM pulse-width control signal input circuit IC；T1 level of transformator then powers to the control pole gate pole of switch metal-oxide-semiconductor Q1 by Ultrafast recovery diode D1, and according to the switch metal-oxide-semiconductor Q1 position connected, common anode circuit is according to positive direction wiring, and common cathode circuit is then according to reverse wiring。