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A Programmable Impedance Adaptive Laser Diode Driver Module

A laser diode and drive module technology, applied in the direction of lasers, laser components, semiconductor lasers, etc., can solve the problems of no over-current power-off and over-temperature power-off protection functions, laser diode damage, etc., to achieve effective judgment and efficient work Effect

Inactive Publication Date: 2020-12-01
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Secondly, ZL200710056012.6 does not have the protection functions of over-current power-off and over-temperature power-off. Once the current limiting module fails, it will cause the risk of output driving current exceeding the safe current, resulting in damage to the driven laser diode.

Method used

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  • A Programmable Impedance Adaptive Laser Diode Driver Module
  • A Programmable Impedance Adaptive Laser Diode Driver Module
  • A Programmable Impedance Adaptive Laser Diode Driver Module

Examples

Experimental program
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Effect test

Embodiment 1

[0039] Embodiment 1 Overall structure of the present invention

[0040] Overall structure of the present invention is as figure 1 As shown, a program-controlled impedance adaptive laser diode drive module has a structure of a single-chip microcomputer module 1, a digital-to-analog conversion module 2, a power output module 3, a load judgment module 4, a delay compensation module 5, a voltage tracking module 6, an overcurrent Judgment module 7, power-off protection module 8, over-temperature judgment module 9, program control module 10, analog-to-digital conversion module 11, soft start module 12, reference voltage module 13, power management module 14 and front panel 15; It is connected with the program control module 10, the analog-to-digital conversion module 11 and the digital-to-analog conversion module 2, the digital-to-analog conversion module 2 is connected with the power output module 3, the soft start module 12 is connected with the power output module 3, and the powe...

Embodiment 2

[0041] Embodiment 2 The power output module of the present invention

[0042] The schematic circuit diagram of the power output module 3 is as follows image 3As shown, one end of the switch of the relay EK1 is used as the first input end of the power output module 3, which is marked as port PWR-in1, and the other end is connected to the drain of the field effect transistor Q1, and is used as the first output end of the power output module 3 terminal, denoted as port PWR-out1, one end of the coil of relay EK1 is connected to the power supply Vdd, and the other end is used as the second input terminal of power output module 3, denoted as port PWR-in2, the gate of FET Q1 is connected to the operational amplifier The output terminal of U1A is connected, and the source is used as the second output terminal of the power output module 3, which is recorded as port PWR-out2. The input terminal is denoted as port PWR-in3, and the other end of resistor R1 is used as the fourth input te...

Embodiment 3

[0044] Embodiment 3 The load judging module of the present invention

[0045] The principle circuit of the load judging module 4 is as Figure 4 As shown, the non-inverting input terminal of the operational amplifier U2A is used as the first input terminal of the load judgment module 4, which is denoted as port Vjdg-in1, and is connected to the port PWR-out1 of the power output module 3, and the inverting input terminal of the operational amplifier U2A is connected to the The output terminal of operational amplifier U2A is connected to one end of resistor R5, the other end of resistor R5 is connected to one end of resistor R6 and the same-inverting input terminal of operational amplifier U3A, the other end of resistor R6 is grounded, and the output terminal of operational amplifier U3A is connected to the in-phase input terminal of operational amplifier U3A. One end is connected to one end of the resistor R9, the other end of the resistor R8 is connected to the inverting input...

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Abstract

A programmable impedance adaptive laser diode driving module of the invention belongs to the technical field of electronic equipment. The programmable impedance adaptive laser diode driving module mainly comprises a single chip microcomputer module (1), a digital-to-analog conversion module (2), a power output module (3), a load judgment module (4), a delay compensation module (5), a voltage tracking module (6), a power-off protection module (8), and the like. The programmable impedance adaptive laser diode driving module can actively adapt to the change of load while working, and has the advantages of high efficiency, wide load adaptation range, high safety and high reliability.

Description

technical field [0001] The invention belongs to the technical field of electronic equipment. In particular, it relates to a programmable impedance self-adaptive laser diode drive module. Background technique [0002] Fiber lasers are widely used in national defense, military industry, high-precision industrial processing and other fields due to their high efficiency, good heat dissipation, good beam quality, simple structure, small size, and light weight. The basic components of a fiber laser are a pump source, a fiber gain medium, and an optical resonator. Among them, the pump source is the most basic component of the entire fiber laser system, which has an important impact on the overall performance of the fiber laser system. The pump source is mainly composed of a high-power semiconductor laser diode and a drive and control circuit. Since the semiconductor laser diode is a device with high power density and extremely high quantum efficiency, its ability to withstand ele...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S5/042
CPCH01S5/042
Inventor 吴戈胡佳琪田小建高博汝玉星聂鸿宇彭小乙李余隆
Owner JILIN UNIV