西安工业大学 光电工程学院 西安 710021
TN2
陕西省教育厅2016年度专项科学研究计划（16JK1370）项目资助
School of Optoelectronics Engineering, Xi’an Technological University, Xi’an 710021, China
半导体激光器对电源稳定性要求极高，微小的电冲击都会对激光器造成不可逆转的损害，因而在实际的应用中对电路的性能和安全有着很高的要求。主要运用负反馈原理来稳定输出电流，由此获得最低的电流偏差和稳定性最高的电流输出。最后运用Multisim软件对电路进行仿真。恒流电路模块是基于电压控制电流源的负反馈系统，采用复合达林顿晶体管的并联路拓扑结构，寻找基极电阻的最优值，并通过实验分析验证了所提出的方法的正确性。仿真和实际测量结果表明：当稳压电路的正负输入电压变化时，其输出电压比较稳定。驱动电源的输出电流在0~1 A范围内是连续可调的，且输出电流稳定性很好（1 h内波动值约为1×10－5 A）。
Semiconductor laser device demanded on the stability of the power, to the device, small electric shock can cause irreversible damage, thus in the actual circuit application, it must have high performance and security to the circuit.It mainly based on the principle of negative feedback to get the lowest current bias and to stabilize output of current. By using the software of Multisim to simulation the circuit. The constant current circuit module was based on the negative feedback system which was the voltage controlled the current.Compound darlington transistor adopted the structure of the parallel topology, than to find the optimal value of base’s resistance and through the experimental to analysis and verify the accuracy of the proposed method. The simulation and actual measurement results show that to change the value of the positive and negative input voltage in regulating circuit, the value of output voltage was stable. Output current of drive power was continuous and adjustable from 0 1 A.And the stability of output current is very good（Fluctuant value is about 1×10－5A in an hour）.
张雄星,范源.中功率激光器驱动电路的研究与设计[J].国外电子测量技术,2017,36(2):59-62
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