Title :
A 63 /spl mu/W-standby-power microcontroller with on-chip hybrid regulator scheme
Author :
Hiraki, M. ; Ito, T. ; Ashiga, K. ; Fujiwara, A. ; Ohashi, T. ; Hamano, T. ; Noda, T.
Author_Institution :
Dept. of Semicond. & Integrated Circuits, Hitachi Ltd., Tokyo, Japan
Abstract :
We present a 32-bit RISC microcontroller having an on-chip DC/DC converter. The chip standby power including the DC/DC converter is reduced to 63 /spl mu/W with a new hybrid regulator scheme in which the microcontroller selects a switching regulator in active mode and a series regulator in standby mode. The achieved standby power corresponds to only about 1% the standby power with a conventional scheme which always uses a switching regulator.
Keywords :
DC-DC power convertors; computer power supplies; microcontrollers; power supply circuits; reduced instruction set computing; voltage regulators; 32 bit; 63 muW; DC/DC converter; RISC; active mode; chip standby power; hybrid regulator scheme; microcontroller; on-chip hybrid regulator scheme; series regulator; switching regulator; Circuits; Costs; Digital signal processing chips; FETs; Hybrid power systems; Microcontrollers; Pins; Power transistors; Regulators; Voltage;
Conference_Titel :
VLSI Circuits, 2001. Digest of Technical Papers. 2001 Symposium on
Conference_Location :
Kyoto, Japan
Print_ISBN :
4-89114-014-3
DOI :
10.1109/VLSIC.2001.934247
