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Universal direct-current LED driving power source

A technology of LED driving and power supply, applied in the direction of electric light source, light source, electric lamp circuit layout, etc., can solve the problems of limited application scope, trouble and difficulty, and lack of integrated circuits, and achieve the effect of expanding the application scope

Inactive Publication Date: 2013-01-02
WUXI LVBO PHOTOELECTRIC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] DC LED drive power supply, the known technology is to use special integrated circuits, such as BP1360, BP1361, BP1601, BP8101, CL6807, etc. These special integrated circuits are highly specific, and their peripheral circuits are few, but they also limit their performance. Application scope, when the driving power is different and the input and output voltages are different, different types of integrated circuits should be selected, especially when the driving power is required to be large, there is no integrated circuit to choose from, which brings great difficulties to the actual need to manufacture various types of LED lamps. trouble and difficulty

Method used

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  • Universal direct-current LED driving power source
  • Universal direct-current LED driving power source
  • Universal direct-current LED driving power source

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1: Combining figure 2 , for the following description, figure 1 The sawtooth wave in module 1 is formed by figure 2 The operational amplifier OP1 in the circuit is composed of resistors R1, R2, R3, R4, diode D1 and capacitor C1. One end of the resistor R1 is connected to the positive pole of the power supply, and the other end is connected to each end of the resistors R3 and R4, and then connected to the positive input pole of the operational amplifier OP1. The resistor R4 The other end is connected to the negative pole of diode D1 and then connected to the output terminal of op amp OP1, the other end of resistor R3 is connected to the common terminal, one end of resistor R2 is connected to the positive pole of the power supply, the other end is connected to the end of capacitor C1 and the positive pole of diode D1, and then connected to the negative pole of op amp OP1 input terminal. The other end of the capacitor C1 is connected to the common end. In this ...

Embodiment 2

[0023] Example 2: Combining image 3 , for the following description, figure 2 The steady flow control module 3 in the image 3 The connection is changed to: the other end of the resistor R6 is connected to one end of the capacitor C2, and then connected to the negative pole of the input terminal of the operational amplifier OP3, and the sliding contact of the trimmer potentiometer W is connected to the positive pole of the input terminal of the operational amplifier OP3. figure 2 The switching power supply in the control 4 in the image 3 In the middle, it is changed to: it is composed of VMOS tube BG2, diode D3, capacitor C3 and inductor L. The output terminal of the operational amplifier OP2 is connected to the input of the switching power supply control module 4, that is, the gate of the VMOS transistor BG2, the source of the VMOS transistor BG2 is connected to the common terminal, the drain of the VMOS transistor BG2 is connected to the positive pole of the diode D3, ...

Embodiment 3

[0024] Example 3: Binding Figure 4 , for the following description, Figure 4 The switching power supply control module 4 in the image 3A semiconductor device DW, a resistor R8 and a diode D4 with voltage stabilizing properties are added. The negative pole of the diode D3 is connected to the negative pole of the semiconductor device DW with voltage stabilizing characteristics, the positive pole of the semiconductor device DW with voltage stabilizing characteristics is connected to one end of the resistor R8 and then connected to the positive pole of the diode D4, the negative pole of D4 is connected to the negative pole of the input terminal of the operational amplifier OP3, and the other end of the resistor R8 Connect to the common terminal. This is a no-load overvoltage protection circuit for a boost switching circuit. When the load LED light is open or the output voltage rises too high due to other reasons, the semiconductor device DW with voltage stabilization characte...

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Abstract

A universal direct-current LED driving power source comprises a sawtooth wave forming module, a pulse width modulation module, a current stabilizing control module, a switch power source control module, a sampling circuit module and an LED lamp. An output end of the sawtooth wave forming module is connected with one end of the pulse width modulation module, an output end of the pulse width modulation module is connected with an input end of the switch power source control module, an output of the current stabilizing control module is connected with the other input end of the switch power source control module, an output end of the switch power source control module is connected with one end of the LED lamp, the other end of the LED lamp is connected with one end of the sampling circuit module, and sampling signals of the sampling circuit module are connected with an input end of the current stabilizing control module. The universal direct-current LED driving power source can be applicable to different power and input and output voltage by changing a few of universal components, and thereby most of manufactures having requirements of various specifications are facilitated undoubtedly, and application range of the universal direct-current LED driving power source is enlarged greatly.

Description

technical field [0001] The invention relates to the technical field of LED driving power supply, in particular to a general DC LED driving power supply. Background technique [0002] DC LED drive power supply, the known technology is to use special integrated circuits, such as BP1360, BP1361, BP1601, BP8101, CL6807, etc. These special integrated circuits are highly specific, and their peripheral circuits are few, but they also limit their performance. Application scope, when the driving power is different and the input and output voltages are different, different types of integrated circuits should be selected, especially when the driving power is required to be large, there is no integrated circuit to choose from, which brings great difficulties to the actual need to manufacture various types of LED lamps. trouble and difficulty. For this reason, a general-purpose DC LED drive power supply is needed, which can be applied to different powers and input and output voltages as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B37/02
Inventor 汤征宁汤乃申
Owner WUXI LVBO PHOTOELECTRIC TECH CO LTD
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