在芯片上的可编程系统上的激光二极管驱动器
The Review of scientific instruments
|March 5, 2024
概括
芯片上的可编程系统提供了一种具有精确温度控制的多功能激光二极管 (LD) 驱动器. 该解决方案提供稳定的性能和超越保护,作为专用设备的替代品.
科学领域:
- 电子 电子 电子 电子 电子 电子 电子
- 光子学 是一个光子学.
- 控制系统 控制系统
背景情况:
- 专用激光二极管 (LD) 驱动器往往缺乏灵活性和先进的控制功能.
- 将控制和驱动器功能集成到单一芯片上,为小型化和降低成本提供了潜力.
研究的目的:
- 提出和演示一个全面的激光二极管驱动器与集成的温度控制,使用芯片上的可编程系统 (SoC).
- 为传统的专用LD驱动器设备提供灵活和高性能的替代方案.
主要方法:
- 在SoC上实现了一个数字比例积分导数 (PID) 控制器,用于精确的LD温度调节.
- 用外部光二极管和集成的传 impedance 放大器来测量光电流特征和频率响应.
- 实现了带有软启动功能的激光二极管超速保护的数字实现.
主要成果:
- 经过证明的0.084%的温度稳定性和2kHz的带宽.
- 实现了0.11%的全尺度电流误差.
- 成功实现了数字超速保护,以提高设备的寿命.
结论:
- 提出的基于SoC的LD驱动器为激光二极管控制提供了稳定,准确和灵活的解决方案.
- 该设计可适应各种激光二极管要求,包括已证明的3W红外LD.
- 这种方法为专门的单一功能驱动器IC提供了可行的替代方案.
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