摘要
刺激输出模块作为深部脑刺激器(deep brain stimulator,DBS)的核心,高效率、体积紧凑是其设计的关键,但其微功率脉冲式的输出特点,常规的设计方法不能满足应用要求,为此本文提出了基于微控制器的新颖的直流变换电路——混合模式动态脉冲式非反向升降压电路,并针对锂离子电池供电对设计参数进行了优化。实验结果显示,在整个输出范围内,模块的转换效率均保持在30%以上,在输入电源附近,效率更是可获得高达80%。该刺激输出模块设计满足了小体积、低功耗的设计要求,可应用到DBS的设计中,用于产生治疗所需的刺激脉冲。
As the kernel of Deep Brain Stimulator (DBS), high efficiency and compact volume are the key points of the design. Featuring micro-power and pulsed output, conventional DC-DC converter topology can hardly meet the application demands. Therefore, this paper puts forward a novel DC-DC converter topology based on microcontroller, which is named as mixed-mode dynamic pulsed non-inverting buck-boost topology and optimized to operate with Liion battery. Experiment results show that the efficiency of the module is kept above 30% in the entire output range, and especially, the efficiency can reach up to 80% as the output voltage is around the input voltage. The stimulation output module features compact volume and low power consumption, and can be applied in DBS design.
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
2008年第7期1418-1421,共4页
Chinese Journal of Scientific Instrument
基金
天津市应用基础及前沿技术研究计划(08JCZDJC19400)资助项目