A low-power power management circuit for SoC in Tire Pressure Monitoring System

Author

Xu-Yang Ding ; Li-Ji Wu ; Xiang-Min Zhang

Author_Institution

Tsinghua Nat. Lab. for Inf. Sci. & Technol., Tsinghua Univ., Beijing, China

fYear

2012

fDate

Oct. 29 2012-Nov. 1 2012

Firstpage

1

Lastpage

3

Abstract

A low-power power management circuit for System-on-Chip (SoC) in Tire Pressure Monitoring System (TPMS) is presented in this paper. It consists of a low dropout voltage regulator (LDO), a bandgap reference (BGR), two voltage comparators and microcontroller unit (MCU) interface circuit. It supplies a 3V voltage and a current up to 50mA for other IP cores of the SoC in TPMS. It has the function of voltage monitor for power-fail and low-battery. The LDO and the BGR have been processed in 0.35μm BCD automotive electronics process technology. The test results show that the total quiescent current of the LDO and the BGR is 233μA when the load current is 50mA.

Keywords

BIMOS integrated circuits; automotive electronics; comparators (circuits); industrial property; low-power electronics; system-on-chip; tyres; voltage regulators; BGR; IP cores; LDO; MCU; SoC; bandgap reference; current 233 muA; current 50 mA; low dropout voltage regulator; low power power management circuit; microcontroller unit interface circuit; size 0.35 mum; system-on-chip; tire pressure monitoring system; voltage 3 V; voltage comparators; voltage monitor; Batteries; Monitoring; System-on-a-chip; Temperature measurement; Temperature sensors; Tires; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State and Integrated Circuit Technology (ICSICT), 2012 IEEE 11th International Conference on

Conference_Location

Xi´an

Print_ISBN

978-1-4673-2474-8

Type

conf

DOI

10.1109/ICSICT.2012.6467723

Filename

6467723