DPA insensitive voltage regulator for contact smart cards

Author

Hernandez, Hugo ; Scott, Jonathan ; Van Noije, Wilhelmus

Author_Institution

Polytech. Sch., Univ. of Sao Paulo, Sao Paulo, Brazil

fYear

2012

fDate

Aug. 30 2012-Sept. 2 2012

Firstpage

1

Lastpage

4

Abstract

An on-chip voltage regulator for contact smart cards in CMOS technology is presented. The proposed regulator protects the supplied system against power analysis attacks using a charge pump architecture to eliminate the power consumption correlation. It generates a 1.55V output from 1.65V to 5.5V input voltage. The circuit has been sized to handle a 50mA load current step with less than 250mV of voltage ripple without external capacitors. Thus, it can be applied in A, B and C classes of smart cards. The presented circuit was designed in a 0.18μm CMOS technology. The core occupies an area of about 0.15mm², without Pads.

Keywords

CMOS integrated circuits; charge pump circuits; integrated circuit design; microprocessor chips; power consumption; security of data; smart cards; voltage regulators; CMOS technology; DPA insensitive voltage regulator; charge pump architecture; circuit design; contact smart card; current 50 mA; differential power analysis; on-chip voltage regulator; power analysis attack; power consumption correlation; size 0.18 mum; voltage 1.55 V; voltage 1.65 V to 5.5 V; Capacitors; Charge pumps; Clocks; Power demand; Regulators; Smart cards; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Integrated Circuits and Systems Design (SBCCI), 2012 25th Symposium on

Conference_Location

Brasilia

Print_ISBN

978-1-4673-2606-3

Type

conf

DOI

10.1109/SBCCI.2012.6344432

Filename

6344432