Title :
Low cross regulation voltage-mode controlled single-inductor dual-outputs (SIDO) voltage regulator
Author :
Hsi-Jui Wang ; Le-Ren Chang-Chien
Author_Institution :
R&D of Power IC, Holtek Semicond., Inc., Taipei, Taiwan
Abstract :
A phase sequence exchange (PSE) topology is proposed for the voltage-mode controlled single input dual output (SIDO) buck converter. The proposed PSE rule determines the energy-charge sequence according to the load conditions for alleviating the cross regulation effect. Therefore, the SIDO buck converter can perform low cross regulation with fixed switching frequency. The controller designed for the PSE technology is implemented by TSMC 0.35μm process. Testing results show that the cross regulation of the PSE-based buck converter is about 0.13mV/mA when load change from 100mA to 300mA.
Keywords :
switching convertors; voltage regulators; PSE topology; SIDO buck converter; TSMC process; current 100 mA to 300 mA; energy-charge sequence; low cross regulation voltage-mode control; phase sequence exchange topology; single-inductor dual-output voltage regulator; switching frequency; Frequency control; Pulse width modulation; Regulators; Voltage control; Cross regulation; single-inductor dual-output (SIDO);
Conference_Titel :
Future Energy Electronics Conference (IFEEC), 2013 1st International
Conference_Location :
Tainan
Print_ISBN :
978-1-4799-0071-8
DOI :
10.1109/IFEEC.2013.6687495
