All-solid-state laser driving power supply device achieving constant voltage / constant current automatic switching

A technology for driving power supplies and lasers, which is applied to lasers, laser components, semiconductor lasers, etc., can solve the problems of initial output voltage plus, out-of-sync, and unsuitable for all-solid-state laser drive power, so as to ensure stability and slow down Effect of initial power-up speed

Active Publication Date: 2013-11-27
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

But this kind of soft start circuit is not suitable for the use of all solid-state laser drive power
Because the commonly used switching power supply needs to establish the output voltage at the beginning of power-on, and the output voltage of the driving power supply of the all-solid-state laser is...

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  • All-solid-state laser driving power supply device achieving constant voltage / constant current automatic switching
  • All-solid-state laser driving power supply device achieving constant voltage / constant current automatic switching
  • All-solid-state laser driving power supply device achieving constant voltage / constant current automatic switching

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Embodiment Construction

[0016] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0017] figure 2 It shows the frame diagram of the all-solid-state laser driving power supply device with constant voltage / constant current automatic switching disclosed by the present invention. Such as figure 2 As shown, the driving power supply adopts switching power supply technology, which includes two parts: the main circuit and the control driving circuit.

[0018] Among them, the main circuit part includes: AC input circuit, AC-DC main circuit and laser load, wherein, the AC-DC main circuit adjusts the size of the output drive current according to the control signal output by the drive circuit, and provides it to the laser, it It provides the driving energy of the laser, which is a strong electric circuit, and ...

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Abstract

The invention discloses an all-solid-state laser driving power supply device achieving constant voltage / constant current automatic switching. The all-solid-state laser driving power supply device comprises a main circuit and a control drive circuit, wherein the main circuit is used for adjusting output drive currents according to control signals outputted from the control drive circuit and providing the output drive currents to a laser; the control drive circuit comprises a constant voltage circuit and a constant current circuit, the constant voltage circuit is used for enabling an all-solid-state laser driving power supply to be in a constant voltage mode at a power-on primary stage, and the constant current circuit is used for enabling the all-solid-state laser driving power supply to be in a constant current pattern at a normal operation stage. By the adoption of the drive power supply, the fact that a laser pumping diode cannot be damaged due to rapidly changing driving voltage in the whole operating process of the all-solid-state laser can be achieved.

Description

technical field [0001] The invention relates to the technical field of laser driving power supply, in particular to a constant voltage / constant current automatic switching all-solid-state laser driving power supply device for driving high-power all-solid-state lasers. Background technique [0002] The all-solid-state laser uses a semiconductor laser diode as its pumping module. The current injected into the diode determines the output power of the laser. Therefore, a driving power supply in constant current mode is generally used, and the output voltage is adaptive according to the load characteristics of the laser. At the same time, in order to meet the adjustability of the output power of the laser, the output current is required to be continuously adjustable. Like ordinary diodes, the volt-ampere characteristics of all solid-state laser pump modules are not linear, such as figure 1 As shown, in the case of a small current, the equivalent impedance of the all-solid-state ...

Claims

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Application Information

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IPC IPC(8): H01S5/042
Inventor 吉俊文林学春侯玮张丁元陈鹏超孙学智
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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