← 返回 JSSC 论文列表JSSC 2007第8期RF & Wireless
A Highly Integrated Power Management IC for Advanced
介绍一款用于先进移动应用的高度集成电源管理IC，提升能效与紧凑性。
无
电源管理IC移动应用低漏失线性稳压器开关模式DC-DC转换器频率补偿
▸高度集成电源管理IC设计：通过创新的系统级架构设计，将LDO和开关模式DC-DC转换器等多种电源管理模块集成在单一芯片上，显著减小了PCB面积和系统复杂度，适用于超薄移动设备。
▸新型LDO频率补偿方法：提出了一种自适应频率补偿技术，通过动态调整补偿网络参数，有效解决了传统LDO在宽负载范围内稳定性不足的问题，提升了电源效率和瞬态响应性能。
▸优化的开关模式DC-DC转换器：采用创新的多模式控制策略，结合脉冲频率调制（PFM）和脉冲宽度调制（PWM），在轻载和重载条件下均实现了高于90%的转换效率，显著延长了电池续航时间。
▸系统级电源管理优化：通过智能电源分配算法，动态调整各模块的供电电压和电流，实现了整体系统功耗的降低，同时满足了高性能移动应用对电源噪声和纹波的严格要求。
Abstract
Wireless communication now has the speed and power to converge seamlessly with other consumer and business electronics. However, battery technology has not kept pace with advancement in circuit technology. As a result, design of power management is becoming a more complex problem for this new generation of wireless devices with converged voice, data, and multimedia. In this paper, a highly integrated power management IC (PMIC) is presented which enables mobile devices that are more cost effective, thinner and more compact with better power efficiency. The overall architecture and system level design con- siderations are described. The design details of two key building blocks—low-dropout linear regulator (LDO) and switch-mode DC-DC converter—are also discussed, including a novel frequency compensation method for LDO.