摘要
为适应低压低功耗应用的需要,提出了一种高性能低压差(LDO)线性稳压器。通过改进稳压器的电路结构和版图设计,引入高精度电路微调技术和完善的过热、过流和过压保护功能,稳压器性能得到了明显的改善。Spectre仿真结果表明,设计构成的LDO输出电流典型值达到3.0 A,最低压差可达1.3 V,电压调整率为0.015%,负载调整率为0.05%。电路的主要性能均已达到设计目标,可在4μm 700 MHz双极工艺下实现。
A high-performance low dropout （LDO） linear regulator is proposedto meet the demand for low-voltage/low-power applications. By improving the circuit structure and layout design, and with high precision trimming technology and perfect functions, such as thermal protection and over current/over voltage protection, the performance of the LDO was significantly improved. Spectre simulation shows that a typical output current of 3.0 A, a low dropout voltage of 1.3 V, a line regulation of 0. 015% and a load regulation of 0.05% have been achieved for the regulator. Major parameters of the circuit satisfy the expected specifications. The device could be implemented in 4μm 700 MHz bipolar technology.
出处
《微电子学》
CAS
CSCD
北大核心
2006年第3期347-351,共5页
Microelectronics
基金
国家自然科学基金资助项目(50237030)
浙江省自然科学基金资助项目(Z104441)
关键词
低压差
线性稳压器
过热保护
过流保护
过压保护
Low dropout
Linear regulator
Thermal protection
Over current protection
Over-voltage protection
