← 返回 JSSC 论文列表JSSC 2014第5期Power Management0.35µm CMOS
A Fast-Response Hybrid SIMO Power Converter with Adaptive Current Compensation and Minimized Cross-Regulation
提出一种采用自适应电流补偿技术的混合SIMO电源转换器，显著提升瞬态响应并减少交叉调节效应。
输入电压3V，输出电压1.8V/1.2V，开关频率500kHz，峰值效率82.8%，瞬态响应时间50.3ns
电源转换器SIMO自适应补偿瞬态响应交叉调节
▸创新点1：自适应电流补偿(ACC)技术（方法创新）。该技术通过引入紧凑型线性调节器，显著改善了升压/降压瞬态响应，无需复杂控制或高开关频率，有效减少了负载瞬态期间的交互占空比变化。
▸创新点2：并行结构混合SIMO设计（系统创新）。采用并行结构设计，避免了传统SIMO转换器中的交叉调节效应，同时提升了整体系统的效率和稳定性。
▸创新点3：快速负载瞬态响应（性能创新）。通过ACC技术和并行结构设计，实现了50.3纳秒的瞬态响应时间，显著提升了系统在负载变化时的动态性能。
▸创新点4：交叉调节效应最小化（性能创新）。在负载瞬态测量中未观察到交叉调节效应，进一步验证了设计的有效性和稳定性。
Abstract
Slow load transient response and potential cross-reg- ulation effect are two major performance barriers for single-in- ductor multiple-output (SIMO) power converters. To overcome these barriers, this paper prese nts a parallel-structured hybrid SIMO power converter with an ad aptive current compensation (ACC) technique. With the employment of new and compact linear regulators, the proposed ACC technique improves both the step-up/down transient responses signi ficantly without the needs on advanced controls or high switc hing frequency. The interactive duty ratio changes between sub-converters are also avoided due to the fast recovery during load transition periods. Cross-regulation effect is thus minimized. The SIMO power converter is fabricated with 0.35 µm CMOS process. The input voltage is 3 V and two output voltages are regulated at 1.8 V and 1.2 V , respectively, with a switching frequency of 500 kHz. The peak ef ficiency is measured at 82.8% with 102-mW load power. A 50.3-ns transient response time is achieved with 270-mW load change. No observable cross-regulation is found during load transient measurements.