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Impedance self-adaptive laser diode driver

A laser diode, self-adaptive technology, used in lasers, laser parts, semiconductor lasers, etc., can solve problems such as no overcurrent power-off and over-temperature power-off protection functions, laser diode damage, etc.

Inactive Publication Date: 2019-05-03
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Again, 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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  • Impedance self-adaptive laser diode driver
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  • Impedance self-adaptive laser diode driver

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Embodiment 1 Overall structure of the present invention

[0047] Overall structure of the present invention is as figure 1As shown, there are current setting module 1, limiting setting module 2, power output module 3, load judging module 4, delay compensation module 5, voltage tracking module 6, overcurrent judging module 7, power-off protection module 8, over-temperature Judgment module 9, display drive module 10, soft start module 11, reference voltage module 12, power management module 13 and front panel 14; Wherein, current setting module 1 is connected with limiting setting module 2, and limiting setting module 2 is also connected with respectively The power output module 3 is connected to the display driver module 10, the soft start module 11 is connected to the power output module 3, the power output module 3 is respectively connected to the display driver module 10, the load judgment module 4, and the overcurrent judgment module 7, and the reference voltage modu...

Embodiment 2

[0048] Embodiment 2 The current setting module of the present invention

[0049] The current setting module 1 of the present invention can adopt such as image 3 In the structure shown, one end of the resistor R40 is connected to the power supply Vdd, the other end is connected to the cathode of the Zener diode D3 and a fixed end of the sliding rheostat W6, the anode of the Zener diode D3 is grounded, the other fixed end of the sliding rheostat W6 is grounded, and the resistor One end of R41 is connected to the sliding wire end of the sliding rheostat W6, the other end is connected to the non-inverting input end of the operational amplifier U11B, the inverting input end of the operational amplifier U11B is connected to one end of the resistor R42, and the other end of the resistor R42 is connected to the output end of the operational amplifier U11B. And as the output terminal of the current setting module 1, denoted as port CSet-out, connected to the input terminal of the limi...

Embodiment 3

[0051] Embodiment 3 Limit setting module of the present invention

[0052] The principle circuit of limiter setting module 2 of the present invention is as Figure 4 As shown, one end of the resistor R45 is used as the input end of the limit setting module 2, which is denoted as port CL-in, and is connected to the output end of the current setting module 1 (that is, the port CSet in Embodiment 1), and the other end is connected to the operational amplifier U12B The non-inverting input terminal of the diode D4 and the positive pole of the diode D4, the negative pole of the diode D4 is connected to the output terminal of the operational amplifier U11A and one end of the resistor R44, the other end of the resistor R44 is connected to the inverting input terminal of the operational amplifier U11A, and the non-inverting input terminal of the operational amplifier U11A is connected to the One end of the resistor R43 is connected, the other end of the resistor R43 is connected to the...

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Abstract

The invention discloses an impedance self-adaptive laser diode driver, and belongs to the technical field of electronic equipment. The impedance self-adaptive laser diode driver mainly comprises a current setting module (1), an amplitude limiting setting 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), a front panel (14) and the like. When the driver works, the driver can actively adapt to the load change, and has the advantages of high efficiency, wide load application range, high safety, high reliability and the like.

Description

technical field [0001] The invention belongs to the technical field of electronic equipment. In particular, it relates to an impedance adaptive laser diode driver. 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 electrical shock is poor, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S5/042
Inventor 吴戈胡佳琪田小建汝玉星高博聂鸿宇李余隆彭小乙
Owner JILIN UNIV
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