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Full-bridge inverter circuit laser driving circuit

A technology for driving circuits and lasers, applied in the field of optoelectronics, can solve the problems of poor insulation, difficult transformer design, large parasitic capacitance, etc.

Inactive Publication Date: 2016-07-27
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among these lasers, except for some semiconductor lasers that are directly pumped by current, the rest of the lasers are basically pumped by the pump source, especially for high-power lasers, it is necessary to use a high-power drive circuit for pumping. The source is driven to generate high-power pump light, but in the prior art, different driving circuits are generally designed for different lasers, and general driving circuits are rarely applicable to other lasers through simple changes
Moreover, for the driving circuit of high-power lasers, the driving voltage generally required by high-power lasers is also relatively high. At this time, the transformer is not easy to design, mainly due to problems such as poor insulation, large parasitic capacitance, and large leakage inductance. In this way, the secondary device of the transformer in the circuit is not easy to select

Method used

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  • Full-bridge inverter circuit laser driving circuit

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Embodiment Construction

[0005] The laser driving circuit of the present invention will be described in detail below in conjunction with the accompanying drawings. The specific composition of the laser drive circuit of the present invention is as follows:

[0006] Including the input terminal, wherein the input terminal includes the positive input terminal vin+ and the negative input terminal vin-, the positive input terminal is respectively connected to one end of the capacitor C1 and the collectors of the insulated gate field effect transistors IGBT1 and IGBT3, and the negative input terminal vin- is respectively connected to To the other end of capacitor C1 and the emitters of insulated gate field effect transistors IGBT2 and IGBT4, the gates of IGBT1, IGBT2, IGBT3, and IGB4 are respectively connected to the microprocessor MCU through resistors R1, R2, R4, and R5. The emitter of IGBT3 is connected to one end of the current sensor ISEN1 and one end of the primary coil of the transformer T1, the emit...

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Abstract

A full-bridge inverter circuit laser driving circuit is disclosed, wherein C1 is a direct current filter capacitor; D1, D2, D3, D4, L2, and Cd are output rectifying filter circuits; R1, R2, R3 and R4 are driving resistors; and MCU is a controller.

Description

technical field [0001] The invention relates to a driving circuit of a laser, belonging to the field of optoelectronic technology. Background technique [0002] There are many types of lasers, such as solid-state lasers, gas lasers, semiconductor lasers, fiber lasers and so on. Among these lasers, except for some semiconductor lasers that are directly pumped by current, the rest of the lasers are basically pumped by the pump source, especially for high-power lasers, it is necessary to use a high-power drive circuit for pumping. The source is driven to generate high-power pump light, but in the prior art, different driving circuits are generally designed for different lasers, and general driving circuits are seldom applicable to other lasers through simple changes. Moreover, for the driving circuit of high-power lasers, the driving voltage generally required by high-power lasers is also relatively high. At this time, the transformer is not easy to design, mainly due to probl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/09H01S5/042H02M7/5387
CPCH01S3/09H01S5/042H02M7/5387
Inventor 李松涛张晓宏张贵银
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)