A igh- erformance Controller with Ad ustable Current Limit
A high-performance pulse width modulation (PWM) controller with adjustable current limit technique, which is suitable for peak-current-mode (PCM) DC-DC converters, especially in high-power application, is proposed in this paper to guarantee converters work properly. In order to realize high-performance analog circuit with smaller size in high-power application, a novel control method with concept of relative ground is introduced in the proposed PWM controller. Besides, compared with conventional PCM DC-DC converters, the change of peak current limit with the change of duty cycle is greatly decreased through a special strategy. The proposed high-performance PWM controller has been validated with 0.6-μm CD process based on a monolithic current-mode BUCK converter capable of driving up to 3A loads with supply voltage from 4.5 to 23V. Simulation results demonstrate that the proposed PWM controller can guarantee the BUCK converter operating properly.
Zekun Zhou Huifang Wang ue Shi Xin Ming Bo Zhang
State key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronics Scie State key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronics Scie
国际会议
2011 IEEE 9th International Conference on ASIC(2011年第九届IEEE国际专用集成电路大会)
厦门
英文
112-115
2011-10-25（万方平台首次上网日期，不代表论文的发表时间）