CN204733409U

CN204733409U - A kind of high power LED constant

Info

Publication number: CN204733409U
Application number: CN201520159085.8U
Authority: CN
Inventors: 刘建国
Original assignee: GUANGZHOU ZHONGHENG OPTOELECTRONICS TECHNOLOGY Co Ltd
Current assignee: GUANGZHOU ZHONGHENG OPTOELECTRONICS TECHNOLOGY Co Ltd
Priority date: 2015-03-20
Filing date: 2015-03-20
Publication date: 2015-10-28
Anticipated expiration: 2025-03-20

Abstract

The utility model discloses a kind of high power LED constant, fuse adopts SMD, and inductance adopts SMD ultra-thin skeleton and magnetic core EFD15, and switch MOS pipe adopts paster encapsulation TO252 to encapsulate 4N60, is all installed on PCB top layer; Output filtering electrochemical capacitor, adopts electrolysis many parallel connections of ⊙ 8XH12, and on PCB, fluting is installed.Hinge structure, the utility model uses existing work mould ultra-thin transformer to connect and uses, and reaches ultra-thin and requirement that is high power low-temperature-rise.The scheme of the Highgrade integration of such power supply makes product have to perfect outward appearance and light efficiency characteristic, and for the ultrathin realizing overall light fixture is taken a firm foundation, the simple and practical product that makes meets temperature rise about LED power and requirement for height.

Description

A kind of high power LED constant

Technical field

The utility model relates to lighting field, a kind of high power LED constant.

Background technology

LED lamp belongs to novel long-life energy-conserving product.The high efficiency of driving power just has particularly important meaning concerning LED lamp.Because the luminous efficiency of LED declines along with the rising of LED temperature, so temperature is just very large on the impact in LED life-span.The efficiency of power supply is high, and its power consumed is just little, just little in light fixture internal heat generation amount, also just reduces the temperature of light fixture, thus reaches the life-span of better energy-saving effect and prolongation light fixture.In addition, along with the requirement of people to quality of the life is more and more higher, there is elaborate facades, the favor of dapper lighting also just extremely people.And as the important part of light fixture, the miniaturization of driving power is the essential step realizing light fixture miniaturization.

Utility model content

The purpose of this utility model is to provide that a kind of volume is ultra-thin, the high power LED constant of high efficiency, high PFC.

In order to achieve the above object, the utility model provides a kind of high power LED constant, and fuse adopts SMD, and inductance adopts SMD ultra-thin skeleton and magnetic core EFD15, switch MOS pipe adopts paster encapsulation TO252 to encapsulate 4N60, is all installed on PCB top layer; Output filtering electrochemical capacitor, adopts electrolysis many parallel connections of ⊙ 8XH12, and on PCB, fluting is installed.

Hinge structure, the utility model uses existing work mould ultra-thin transformer to connect and uses, and reaches ultra-thin and requirement that is high power low-temperature-rise.The scheme of the Highgrade integration of such power supply makes product have to perfect outward appearance and light efficiency characteristic, and for the ultrathin realizing overall light fixture is taken a firm foundation, the simple and practical product that makes meets temperature rise about LED power and requirement for height.

Accompanying drawing explanation

Fig. 1 is the circuit diagram of the utility model high power LED constant.

Embodiment

Below in conjunction with accompanying drawing and example, the utility model is described further.

As shown in Figure 1, in order to meet high efficiency height PFC, the present embodiment selects efficient single-stage PFC non-isolated scheme, and 100-240VAC input efficiency easily can reach more than 90%, and full voltage PFC meets more than 0.9.

In figure, F1 is input fuse, adopts paster fuse, is arranged on PCB top layer.Inductance L 1 and L2 are the power original papers of power supply, store and transferring energy by him in work, there is magnetic loss and iron loss, so can generate heat at work, core volume determines the power output of power supply, adopt SMD ultra-thin skeleton and magnetic core EFD15 (5+5) in this circuit arrangement, output demand can be met, PCB top layer is installed; Q1 is switch MOS pipe, adopts paster encapsulation TO252 to encapsulate 4N60, installs PCB top layer; C4 is output filtering electrochemical capacitor, adopts electrolysis many parallel connections of ⊙ 8XH12, and on PCB, fluting is installed; Other components and parts all adopt paster to encapsulate, and are arranged on PCB top layer; Such PCB only has top layer original paper, and bottom does not have original paper, and that can process is more smooth, and the total height of power supply, within 8MM, achieves ultra-thin requirement.

Key property of the present utility model comprises:

The low development cost of ultrathin, is beneficial to outward appearance perfection design;

High efficiency, efficiency is up to 90%;

High power factor, product adopts power factor correction circuit, and power factor (PF) is up to 0.9;

Full voltage inputs, and constant current output, exports different from conventional constant voltage, adopts constant current output.

Adopt ultra-thin components and parts, the unit space power density of improving product, reduces power source integral volume, adopts work mould components and parts to reduce power supply cost as far as possible.

This power acquisition single-stage PFC Non-isolation model, works in critical conduction mode, decreases switching loss and switch stress, improves the whole efficiency of power supply, reaches the input of money voltage, high PFC.

The simple and effective one side mounting means of this power acquisition, is conducive to reducing height.

Inductance (transformer) adopts tandem working mode, utilizes the principle of stacking of inductance, and the sensibility reciprocal sum of two inductance is equivalent to effect of the inductance of this inductance value; Feed back to IC to power and can remove electricity from an inductance, when calculating, the voltage on an inductance equals a half when inductance.Such as, an inductance operation, turn ratio is 100:20, and inductance value is 1Mh; When two inductance, turn ratio is 50:20, inductance value 0.5mH(two just the same coilings of inductance).

Above are only preferred embodiment of the present utility model, certainly, explore according to actual needs and further and can also have other execution mode.But, it is clearly understood that, based on similar above-mentioned or other conversion with the execution mode of same idea do not stated out, all should be encompassed within protection range of the present utility model.

Claims

1. a high power LED constant, is characterized in that: fuse adopts SMD, and inductance adopts SMD ultra-thin skeleton and magnetic core EFD15, and switch MOS pipe adopts paster encapsulation TO252 to encapsulate 4N60, is all installed on PCB top layer; Output filtering electrochemical capacitor, adopts electrolysis many parallel connections of 8XH12, and on PCB, fluting is installed.

2. high power LED constant according to claim 1, is characterized in that: adopt power factor correction circuit.

3. high power LED constant according to claim 1, is characterized in that: adopt single-stage PFC Non-isolation model, work in critical conduction mode.

4. high power LED constant according to claim 1, is characterized in that: inductance adopts tandem working mode, and utilize the principle of stacking of inductance, the sensibility reciprocal sum of two inductance is equivalent to effect of the inductance of this inductance value.

5. high power LED constant according to claim 1, is characterized in that: adopt full voltage input, constant current output.