一种新型过流保护威廉希尔官方网站
的设计研究 张娜娜 梁齐 (合肥工业大学, 安徽合肥230009) 摘要:本文提出的过流保护威廉希尔官方网站
利用运算放大器虚短虚断的原理大大提高了对输出电流的采样精度,从而提高了威廉希尔官方网站
的可靠性;并通过增加的折回威廉希尔官方网站
,有效降低了LDO(Low Drop-Out)系统的过流关断功耗。本威廉希尔官方网站
基于TSMC 0.6μ m CMOS 工艺设计,进行了应用于LDO 的Spectra 仿真,结果表明该过流保护威廉希尔官方网站
可靠性高、过流关断功耗低。 关键字:过流保护,LDO,可靠性,折回威廉希尔官方网站
Design of a Novel Over-Current Protection Circuit Zhang Nana , Liang Qi (Hefei University Of Technology , Hefei , Anhui 230009, China) Abstract : The over-current protection circuit described in this paper greatly improves the sampling precision of output current and heightens the reliability of the circuit by using the virtual-short and virtual-cutoff principle of operation amplifier . And more , It greatly reduces the over-current cutoff power dissipation of LDO(Low Drop-Out)by using a fold-back circuit . Based on TSMC 0.6μ m CMOS process , the Spectra simulation result applied in LDO verifies that this over-current protection circuit has good reliability and low power dissipation . Key words : over-current , LDO(Low Drop-Out), reliability, fold-back circuit