CN201119056Y - High-light-efficiency and high-power LED lamp driving circuit - Google Patents

Abstract

The utility model relates to a high light efficiency, high-power LED lamp drive circuit, including the IC the control unit of an AC/DC rectifier circuit and two or more than two series connection each other, wherein have an IC the control unit and establish ties with above-mentioned AC/DC rectifier circuit, a set of series connection LED array is connected to above-mentioned each control unit electricity all to control the work of series connection LED array. The LED array is connected in series through a plurality of IC control units, and each IC control unit is correspondingly controlled to be connected with one series LED array, so that the effects of high safety and reliability, high light efficiency and high power are achieved. Also can make simultaneously through AC/DC rectifier circuit the utility model discloses output direct current, stability are good, and LED is difficult impaired, has also promoted the life-span of LED lamp life.

Description

High-efficiency, high-power LED lamp drive circuit

technical field

The utility model relates to the field of LED lighting lamps, in particular to a driving circuit for LED lamps with high light efficiency and high power.

Background technique

As we all know, LED (Light Emitting Diode), also known as light-emitting diode, is a component made of semiconductor materials. It is also a tiny solid-state light source that can convert electrical energy into light. Fast, excellent shock resistance, can meet the light, thin and miniaturization requirements of various application equipment, has become a very popular product in daily life; with the rapid development of LED technology, its luminous brightness has been greatly improved, so The industry uses LEDs as light-emitting components for daily lighting fixtures, especially the trend of replacing incandescent lamps and fluorescent lamps in applications, which has aroused great attention at home and abroad. At present, the vast majority of LED lamps used in lighting often use more LED monomers connected in series on the same IC to solve the problem of high light efficiency and high power. However, in practical applications, due to the driving current and LED light output Difficult to achieve a corresponding ratio, resulting in unstable light output of the LED array, easy to damage the LEDs, reducing their service life, thus making the safety and reliability poor.

Utility model content

The utility model aims to provide a high-efficiency, high-power LED lamp driving circuit, which has high safety and reliability, and improves the service life of the LED lamp.

In order to achieve the above-mentioned purpose, the utility model takes the following technical solutions:

A high-efficiency, high-power LED lamp drive circuit, comprising an AC/DC rectifier circuit and two or more IC control units connected in series, wherein an IC control unit is connected in series with the above-mentioned AC/DC rectifier circuit, and the above-mentioned Each control unit is electrically connected to a group of serial LED arrays to control the serial LED arrays to work.

Each IC control unit is composed of an IC chip, a voltage regulating circuit and a constant current circuit. Among them, pin 1 of the IC chip is connected to the power supply, and pin 3 is grounded to provide power for the IC chip; and pin 2 of the IC chip is connected to the constant current circuit. Connection, 4 pins are connected with the voltage regulating circuit, 5 pins are connected with the series LED array.

The voltage regulating circuit is composed of adjustable resistors.

The constant current circuit is composed of a resistor or a PWM constant current driver.

The utility model advantage is as follows:

1. The AC/DC rectifier circuit can make the utility model output direct current with good stability, the LED is not easy to be damaged, and the service life of the LED lamp can be improved.

2. Connect multiple IC control units in series, and control a series LED array corresponding to each IC control unit, so as to achieve high safety reliability, high light efficiency and high power.

Description of drawings

Fig. 1 is a schematic diagram of the circuit structure of the utility model.

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 1, a high-efficiency, high-power LED lamp drive circuit includes an AC/DC rectifier circuit (1) and two IC control units (2a, 2b) connected in series, the AC/DC rectifier circuit ( 1) It is used to convert AC into direct output; wherein the IC control unit (2a) is connected in series with the above-mentioned AC/DC rectifier circuit (1), and each of the above-mentioned control units (2a, 2b) is electrically connected to a group of serial LED arrays (3 ), to control the series LED array (3) to work.

Since the control unit (2a) has the same circuit structure as the control unit (2b), the IC control unit (2a) is used as an example for illustration; the IC control unit (2a) consists of an IC chip (21), a voltage regulating circuit (22) and Constant current circuit (23) constitutes, and wherein, 1 pin of IC chip (21) is connected to power supply, and 3 pins are grounded, to provide IC chip (21) power-up; And 2 pins of IC chip (21) and constant current circuit ( 23) connection, the 4 pins are connected with the voltage regulating circuit (22), and the 5 pins are connected with the series LED array (3). Of course, the voltage regulating circuit (22) is composed of adjustable resistance. And the constant current circuit (23) is made of resistance or PWM constant current driver.

The focus of the design of the utility model is to connect a plurality of IC control units in series, and control a series LED array corresponding to each IC control unit, thereby achieving high safety reliability, high light efficiency and high power. At the same time, the utility model can output direct current through the AC/DC rectification circuit, and the stability is good, the LED is not easy to be damaged, and the service life of the LED lamp is also improved.

The above is only a preferred embodiment of a high-efficiency, high-power LED lamp driving circuit of the present invention, and does not limit the technical scope of the present invention. For example, only two IC control units are used in the above-mentioned embodiment. Explain in series, which can be three, four or more IC control units, which are selectively connected in series according to actual requirements, so any minor modifications made to the above embodiments based on the technical essence of the present invention are equivalent to Changes and modifications all still belong to the scope of the technical solution of the utility model.

Claims (4)

1. A high-efficiency, high-power LED lamp drive circuit, characterized in that it includes an AC/DC rectifier circuit and two or more IC control units connected in series, wherein an IC control unit is connected to the above-mentioned AC/DC The DC rectifier circuits are connected in series, and each of the control units is electrically connected to a group of series LED arrays to control the series LED arrays to work. 2. The high-efficiency, high-power LED lamp driving circuit according to claim 1, wherein each IC control unit is composed of an IC chip, a voltage regulating circuit and a constant current circuit, wherein pin 1 of the IC chip is connected to the power supply , pin 3 is grounded to provide power to the IC chip; pin 2 of the IC chip is connected to the constant current circuit, pin 4 is connected to the voltage regulating circuit, and pin 5 is connected to the series LED array. 3. The high-efficiency, high-power LED lamp driving circuit according to claim 1, characterized in that: the voltage regulating circuit is composed of adjustable resistors. 4. The high-efficiency, high-power LED lamp driving circuit according to claim 1, wherein the constant current circuit is composed of a resistor or a PWM constant current driver.

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