Design of a high-voltage resistant and highly reliable LDO for automotive applications

IEICE Electronics Express

article

Wenrui Yan¹  Bingxian Hao¹  Meijuan Ma¹  Yun Wang¹ 

[1] Institute of Microelectronics of the Chinese Academy of Sciences;University of Chinese Academy of Sciences;Guangdong Greater Bay Area Institute of Integrated Circuit and System

关键词: linear regulators;    wide input voltage;    adjustable output;    automotive electronics;   

DOI  :  10.1587/elex.19.20220408

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

This paper presents a high reliability low dropout linear regulator with high voltage tolerance, which uses an open loop structure and is applied to the feedforward response portion of the power tube gate to enhance the transient response of the LDO. The proposed LDO is simulated using a 0.18um DTI isolated BCD process with a 3.3V-14V supply voltage, a maximum input voltage of 40V and an adjustable output voltage of 3.1V/5V. The line regulation is 0.086% at 40V high voltage input and the supply voltage rejection ratio of the circuit can be maintained at around 60dB.

【 授权许可】

CC BY