半导体激光器驱动电路建模与补偿网络设计

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Abstract The output wavelength and power of semiconductor laser can change greatly due to the small current change. Therefore, a four-phase staggered Buck converter is proposed as the driving circuit of semiconductor laser to reduce output current ripple. Based on the principle of staggered parallel connections, a function of the inductive current of each phase is derived. In order to better study the characteristics of the converter, the four-phase staggered Buck converter is modeled and analyzed by using the state-space average method, and the optimal compensation network is designed according to the results of Matlab Bode diagram. The simulation results show that the drive circuit can output 20A current, and the ripple is 0.19A. Compared with the conventional Buck converter with 20A output current and 2.51A ripple under the same input condition, it can be concluded that the designed drive circuit can realize the characteristics of reducing ripple and stable output. The experimental results also verify the soundness of the design.

Key words： semiconductor laser Buck converter interleaved parallel system modeling com- pensation network

Received: 13 February 2023

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	Articles by authors
	LIU Di
	ZHANG Xiaoqiang
	ZHANG Weiping
	WANG Chunhui

Cite this article:

LIU Di,ZHANG Xiaoqiang,ZHANG Weiping等. Modeling and compensation network design of semiconductor laser drive circuit[J]. Electrical Engineering, 2023, 24(4): 22-28.

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http://dqjs.cesmedia.cn/EN/Y2023/V24/I4/22

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