Intel Low Voltage Embedded Design free download

File name Low Voltage Embedded Design.PDF

AP-477 APPLICATION NOTE Low Voltage Embedded Design JOHN WILLIAMS APPLICATIONS ENGINEER February 1993 Order Number 272324-001 Information in this document is provided in connection with Intel products Intel assumes no liability whatsoev- er including infringement of any patent or copyright for sale and use of Intel products except as provided in Intel's Terms and Conditions of Sale for such products Intel retains the right to make changes to these specifications at any time without notice Microcomputer Products may have minor variations to this specification known as errata Other brands and names are the property of their respective owners Since publication of documents referenced in this document registration of the Pentium OverDrive and iCOMP trademarks has been issued to Intel Corporation Contact your local Intel sales office or your distributor to obtain the latest specifications before placing your product order Copies of documents which have an ordering number and are referenced in this document or other Intel literature may be obtained from Intel Corporation P O Box 7641 Mt Prospect IL 60056-7641 or call 1-800-879-4683 COPYRIGHT INTEL CORPORATION 1996 Low Voltage Embedded Design CONTENTS PAGE CONTENTS PAGE 3 2 2 Disadvantages of Mixed 1 0 INTRODUCTION 1 Voltage Systems 6 1 1 What is 3V 1 3 2 2 1 Multiple Supplies in Mixed Voltage Systems 7 2 0 REASONS FOR 3V OPERATION 1 3 2 2 2 Additional Current 2 1 Device Geometries 1 Consumption in Mixed Voltage 2 2 System Benefits 1 Systems 7 3 2 3 Summary Mixed Voltage 3 0 LOW VOLTAGE SYSTEM Systems 8 DESIGN 2 3 3 Single Voltage System Design 8 3 1 Power Supply Design 2 3 3 1 Devices Designed for Low 3 1 1 Batteries 2 Voltage Operation 8 3 1 2 Voltage Regulation 3 3 3 2 Devices Derated for Low 3 1 3 Calculating System Power Voltage Operation 8 Consumption 3 3