【24h】

Design of a PWM/PFM Buck DC-DC Converter with High Efficiency

机译:高效PWM / PFM降压DC-DC转换器的设计

获取原文

摘要

This paper presents a buck DC-DC converter with PWM and PFM mode which has high efficiency. The converter operates in PWM at nominal load current (>80mA) with the fixed switching frequency of 1 MHz, and enters PFM at light load current (<80mA). When entering PFM, the converter will shut down several modules to reduce quiescent current and make the switching frequency greatly declined. The chip was implemented using a TSMC 0.18um CMOS 1P3M mixed-signal process. As the simulation indicates, the converter can rapidly switch between PWM and PFM according to the load current, which is suitable for battery-support portable system.
机译:本文提出了一种具有高效率的PWM和PFM模式的降压DC-DC转换器。转换器以1 MHz的固定开关频率在标称负载电流(> 80mA)下以PWM工作,并在轻负载电流(<80mA)进入PFM。进入PFM时,转换器将关闭几个模块以降低静态电流,并使开关频率大大下降。该芯片是采用TSMC 0.18um CMOS 1P3M混合信号工艺实现的。如仿真所示,该转换器可以根据负载电流在PWM和PFM之间快速切换,这适用于电池支持的便携式系统。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号