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Programmable impedance adaptive laser diode driving module

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

Inactive Publication Date: 2019-03-26
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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  • Programmable impedance adaptive laser diode driving module
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  • Programmable impedance adaptive laser diode driving module

Examples

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Effect test

Embodiment 1

[0039] Example 1 Overall structure of the present invention

[0040] The overall structure of the present invention is as figure 1 As shown, a programmable impedance adaptive laser diode drive module has 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; among them, single-chip microcomputer 1 respectively It is connected to 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 to the power output module 3, the soft start module 12 is connected to the power outpu...

Embodiment 2

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

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

Embodiment 3

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

[0045] The principle circuit of the load judgment module 4 is as follows 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, denoted as port Vjdg-in1, which 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 output end of the operational amplifier U2A is connected to one end of the resistor R5, the other end of the resistor R5 is connected to one end of the resistor R6 and the non-inverting input end of the operational amplifier U3A, the other end of the resistor R6 is grounded, and the output end of the operational amplifier U3A is connected to the resistor R8. One end is connected to one end of the resistor R9, the other end of the resistor R8 is connected to the inverting input end of the operational amplifier ...

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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 adaptive laser diode drive module. Background technique [0002] Fiber lasers are widely used in the fields of national defense, military industry, and high-precision industrial processing due to their high efficiency, good heat dissipation, good beam quality, simple structure, small size, and light weight. The basic composition of fiber laser is pump source, fiber gain medium and optical resonant cavity. 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, it has a poor ability to withstand electrical shocks ...

Claims

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Application Information

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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
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