An all-digital PWM generator with 62.5ps resolution in 28nm CMOS technology

Author

Hoppner, Sebastian ; Haenzsche, Stefan ; Scholze, Stefan ; Schuffny, Rene

Author_Institution

Fac. of Electr. Eng. & Inf. Technol., Tech. Univ. Dresden, Dresden, Germany

fYear

2015

fDate

24-27 May 2015

Firstpage

1738

Lastpage

1741

Abstract

This paper presents an all-digital pulse width modulator (PWM) for application in integrated DC-DC converters. Based on a multi-phase clock signal a PWM resolution of 62.5ps is achieved, resulting in up to 16-Bit PWM resolution at 4096ns period. The PWM signal duty cycle and period can be arbitrarily changed within a single cycle which allow efficient alldigital implementation of spread spectrum clocking schemes. The circuit has been implemented in 28nm SLP CMOS technology. It consumes 0.3mW when operating from a 1.0V supply.

Keywords

CMOS integrated circuits; DC-DC power convertors; PWM power convertors; low-power electronics; PWM signal duty cycle; SLP CMOS technology; all-digital PWM generator; all-digital pulse width modulator; integrated DC-DC converter; multiphase clock signal; power 0.3 mW; size 28 nm; spread spectrum clocking scheme; super low power complementary metal oxide semiconductor; voltage 1 V; word length 16 bit; CMOS integrated circuits; CMOS technology; Clocks; Generators; Pulse width modulation; Signal resolution; System-on-chip; ADPLL; PWM generator DC-DC converter; power management;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems (ISCAS), 2015 IEEE International Symposium on

Conference_Location

Lisbon

Type

conf

DOI

10.1109/ISCAS.2015.7168989

Filename

7168989