一种用于H桥功率驱动电路的电荷泵设计  

Design of Charge Pump For H-Bridge Power Driver Circuit

作　　者：湛衍[1] 黄武康[2] 徐建华[1] 叶甜春[1] 

机构地区：[1]中国科学院微电子研究所,北京100029 [2]中国科学院嘉兴微电子与系统工程中心,浙江嘉兴314006

出　　处：《微电子学与计算机》2014年第1期107-111,共5页Microelectronics & Computer

摘　　要：提出了一种可驱动H桥功率电路的电荷泵．为了简化电路设计和确保电路稳定性，本电荷泵采用两倍压电荷泵电路拓扑结构，通过加入两路反馈控制电路来提高电荷泵充电电流和输出电压值的控制精度以及电源转换效率．设计采用0．35μmBCD工艺，通过CadenceSpectre仿真器表明，在负载电流为5mA条件下，电荷泵正常工作时输出电压范围广（10＊40V），电源转换效率最高达到91％，输出电压建立所需时间为579μs．样片实测结果显示，在不同输入电压条件下，输出电压纹波控制在385mV以下．A charge pump for H-Bridge power driver circuit was proposed in this paper. In order to simplify the circuit complexity and ensure stability, the proposed charge pump is based on voltage doubling charge pump circuit topology, by adding two feedback control loop to precisely control the output voltage and the charging current of the charge pump. Used 0. 35 μm BCD process model, the cadence spectre emulator show that charge pump is working properly on 5 mA load current condition. The output voltage range is wide（from 10 V to 40 V）, the highest power efficiency reached 91%, settling time of the output voltage is 579 bts. And the test results show that the ripple of output voltage is below 385 mV.

关 键 词：H桥功率驱动电路 电荷泵 效率 

分 类 号：TN492[电子电信—微电子学与固体电子学]