Title :
An 83% peak efficiency and 1.07W/mm2 power density Single Inductor 4-Output DC-DC converter with Bang-Bang Zeroth-Order Control
Author :
Dongchul Park ; Tae-Hwang Kong ; Sukhwan Choi ; Gyu-Hyeong Cho
Author_Institution :
Dept. of Electr. Eng., KAIST, Daejeon, South Korea
Abstract :
This paper presents a new control scheme dubbed Bang-Bang Zeroth-Order Control (BBZOC) for Single Inductor Multiple Output (SIMO) buck converter. The main loop control utilizes a phase detector, charge pump, filter, and comparator. The SIMO buck converter with BBZOC simplifies the compensation design compared to conventional voltage mode control. This work is fabricated in 1P4M 0.35um BCD process and achieves 83% maximum efficiency with the rated output power of 1.04W. The maximum output power is 2.7W and the maximum power density is 1.07 W/mm2. Considering the difference in the process, this work represents the state of the art in the power density.
Keywords :
DC-DC power convertors; bang-bang control; charge pump circuits; comparators (circuits); compensation; filters; phase detectors; voltage control; BBZOC; BCD process; SIMO buck converter; bang-bang zeroth-order control; charge pump; comparator; compensation design; control scheme; filter; loop control; phase detector; power 1.04 W; power 2.7 W; power density; single inductor multiple output buck converter; single-inductor DC-DC converter; size 0.35 mum; voltage mode control; Charge pumps; Conferences; DC-DC power converters; Density measurement; Inductors; Switches; Transient analysis; Bang-Bang Control; Comparator; DC-DC Buck Converter; Efficiency; Filter; Freewheeling; PFD; Power Density; SIMO; Single Inductor Multiple Output; Zeroth-Order Control;
Conference_Titel :
Solid-State Circuits Conference (A-SSCC), 2014 IEEE Asian
Conference_Location :
KaoHsiung
Print_ISBN :
978-1-4799-4090-5
DOI :
10.1109/ASSCC.2014.7008860
