A Kind of Switch Current Source with High Order LC Filter Output

摘要：

A kind of switch current source with feedback loop compensation is presented in this paper to solve the problem that switching current source can not be applied in high- precision circuit. A good tradeoff has been made by this type of switch current source in improving the dynamic response and reducing low ripple. At the beginning of the paper, the model of BUCK-type circuit is built after analyzing the circuit. Next, the main factor which affects the stability of the system, the filter, is emphasized. The contradiction of high out band rejection and high stability which exists in LC filter is pointed out. To solve this problem, the program of feedback loop compensation is proposed; to verify this program the simulation result is presented. Finally, the implementation circuit of switch current source with high order LC filter output is presented.

作者: Bumin Liu Cuiqin Fu Bincheng Que

作者单位: University of Electronic Science and technology of China Chengdu, Sichuan, China

会议类型: 国际会议

会议名称: 2010 International Conference on Communications,Circuits and Systems(2010年通信、电路与系统国际会议)

会议地点: 成都

会议语种:英文

页码: 518-521

在线出版日期: 2010-06-28（万方平台首次上网日期，不代表论文的发表时间）