Max-supply selector using a supply voltage comparator

被引：1

作者：

Mandal, P. ^{[1
]}

Khan, P. A. A.

Pandey, R. ^{[2
]}

机构：

[1] Indian Inst Technol, Dept Elect & Elect Commun Engn, Kharagpur, W Bengal, India

[2] Alliance Semicond India Pvt Ltd, Design Team, Mixed Signal Business Unit, Bangalore, Karnataka, India

来源：

PROCEEDINGS OF THE INTERNATIONAL CONFERENCE MIXED DESIGN OF INTEGRATED CIRCUITS AND SYSTEMS | 2006年

关键词：

supply comparator; Schottky Diodes; Multiple Supply Supervisors;

D O I：

10.1109/MIXDES.2006.1706593

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Higher supply line selector is an integral part of a multi-supply power management integrated circuit (IC). This document talks about a CMOS implementation of higher-supply-line selector circuit. The selector circuit uses a proposed supply line comparator. To avoid unwanted hazard for equal potential at the supply lines, the comparator has hysteresis in its switching characteristic. Operating principle of the proposed comparator discussed in detail. The higher-supply-line selector circuit is used in a 3.0V/5.0V power supervisor chip which is implemented in a 0.5u CMOS process. The silicon-measured data is consistent with predicted simulation results. The proposed circuit idea can be extended for more than two supplies environment. Additionally, similar implementation can be adopted using bi-polar or in Bi-CMOS circuits.

引用

页码：327 / +

页数：2