摘要
讨论了一种大功率半导体激光控制器的设计方案 ,能够对激光器提供一个稳定的受控电流 ,并能实时监视、控制激光器的温度 ,以达到保护激光器的目的。主控器采用MCS 5 1单片机来实现对整个系统的精确控制 ,对电流的监控达到毫安级 ,温度可达 0 .1℃。激光二极管热电制冷器驱动电路采用高效、大功率H桥驱动集成块DRV5 92。与当前普遍采用分立元件设计相比 ,简化了 80 %的设计。
A laser controller consisting of MCS-51 microcontroller and Texas Instruments DRV592 power driver is presented.The DRV592 is a high-efficiency,high-current H-bridge ideal for driving a wide variety of the thermoelectric cooler(TEC) elements in systems powered from 2.8V to 5.5V .The MCS-51 microcontroller implements a digital proportional-integral-derivative feedback controller using an analog-to-digital converter to read the thermistor,and direct output of pulse-width-modulated waveforms to the H-bridge DRV592 power amplifier.The laser controller can achieve ±0.1℃ temperature and milliampere accuracy,which is internally protected against thermal and current overloads.
出处
《激光技术》
CAS
CSCD
北大核心
2004年第3期225-227,共3页
Laser Technology
