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Actuator power-supply for driving laser diode

A laser diode, switching power supply technology, applied in lasers, laser parts, semiconductor lasers, etc., can solve problems such as current overshoot, power grid fluctuation, circuit self-locking, etc., to achieve stable current output, high power factor, and suppression circuits Effects of the transition process

Inactive Publication Date: 2008-10-15
GUANGZHOU IND DEV GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current stabilization source still fails to solve other power supply stabilization problems such as controlling current overshoot and sudden changes, circuit self-locking and grid fluctuations.

Method used

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  • Actuator power-supply for driving laser diode
  • Actuator power-supply for driving laser diode
  • Actuator power-supply for driving laser diode

Examples

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Embodiment Construction

[0027] The specific implementation manner of this invention will be further described below in conjunction with the accompanying drawings.

[0028] Please refer to figure 1 As shown, a switching power supply for driving laser diodes, which includes a multi-turn potentiometer 1 and an operating current amplifier 3 connected to adjust the working current, and a multi-turn potentiometer 2 connected to set the maximum current and set the current amplifier 4. The working current amplifier 3 and the setting current amplifier 4 are connected to the current value comparison gate 7, the output of the current value comparison gate 7 is connected to the output current controller 11, and the output current controller 11 is connected to the internal control and external control conversion device 13, and connect the laser through a large current power module 15.

[0029] Wherein the structure of the current value comparison gate 7 is as follows figure 2 As shown, where CPR is a comparato...

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PUM

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Abstract

A switch power for driving laser light emitting diode, including: the adjusting operating current multi-circle potentiometer and the operating current amplifier that connect with each other, the setting most current multi-circle potentiometer and the setting current amplifier that connect with each other, the operating current amplifier and the setting current amplifier connect with the current value comparison selecting gate, the output of the current value comparison selecting gate connects with the outputting current controller, the outputting current controller connects with the laser by the big current power module. The invention is: high stability power, settable most operating current, forcible zero startup function, high power factor and high power efficiency.

Description

【Technical field】 [0001] The invention relates to a switching power supply, in particular to a switching power supply for driving a high-current laser diode. 【Background technique】 [0002] A semiconductor laser is an electroluminescence device, when a stable current is injected into the semiconductor laser, it will emit laser light of a certain wavelength. Because the high-current laser diode array is expensive and is easily damaged by electricity, the output laser will have an unstable output wavelength due to unstable driving current, so high-power diode lasers have very strict regulations on its driving power. The technical requirements mainly include: the output DC current should be as high as tens of amperes; when the laser tube is powered on, overshoot and current mutation must be strictly controlled; high current stability and low ripple coefficient are required; high power factor and electrical efficiency; complete The protective circuit system, especially for self...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S5/042G05F1/46G05F1/571G05F1/573
Inventor 谢德仁杨天立安哲
Owner GUANGZHOU IND DEV GRP
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