A High Energy Efficiency PSM/PWM Dual-Mode for DC-DC Converter in Portable Applications

被引：7

作者：

Luo, Ping ^{[1
]}

Deng, Wenjun ^{[1
]}

Li, Hangbiao ^{[1
]}

Zhen, Shaowei ^{[1
]}

机构：

[1] Univ Elect Sci & Technol China, Sch Microelect & Solid State Elect, Chengdu 610054, Peoples R China

来源：

2009 INTERNATIONAL CONFERENCE ON COMMUNICATIONS, CIRCUITS AND SYSTEMS PROCEEDINGS, VOLUMES I & II: COMMUNICATIONS, NETWORKS AND SIGNAL PROCESSING, VOL I/ELECTRONIC DEVICES, CIRUITS AND SYSTEMS, VOL II | 2009年

关键词：

D O I：

10.1109/ICCCAS.2009.5250420

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

Based on the Energy Conservation Rule, an Unideal Energy Balance (UEB) model of a DC-DC converter in Discontinuous Conduction Mode (DCM) is built and the energy efficiency of the power converter is studied. A high energy efficiency PSM/PWM dual-mode for DC-DC converter is proposed in this paper after compared the energy efficiencies of the converter in Pulse Skip Modulation (PSM) mode and Pulse Width Modulation (PWM) mode separately. According to the real time value of energy efficiency, PSM mode is adopted for light loads, while, PWM mode is used for moderate or heavy loads in the proposed PSM/PWM dual-mode, that make the converter keep high energy efficiency in the whole variable loads range. The real time value of energy efficiency is easy to be calculated by the DSP/CPU in the System on Chip (SoC) of a portable appliance and transferred through the data interface (IC)-C-2.

引用

页码：702 / 706

页数：5

共 13 条

[1] Efficient adaptive voltage scaling system through on-chip critical path emulation [J].

Elgebaly, M ;

Sachdev, M .

ISLPED '04: PROCEEDINGS OF THE 2004 INTERNATIONAL SYMPOSIUM ON LOW POWER ELECTRONICS AND DESIGN, 2004, :375-380

[2] A robust level-shifter design for adaptive voltage scaling [J].

Gupta, Ankur ;

Chauhan, Rajat ;

Menezes, Vinod ;

Narang, Vikas ;

Roopashree, H. M. .

21ST INTERNATIONAL CONFERENCE ON VLSI DESIGN: HELD JOINTLY WITH THE 7TH INTERNATIONAL CONFERENCE ON EMBEDDED SYSTEMS, PROCEEDINGS, 2008, :383-388

[3]

GUPTA P, 2005, P IEEE ISCAS, V4, P3063

[4] Small signal analysis of energy factor and mathematical modeling for power DC-DC converters [J].

Luo, Fang Lin ;

Ye, Hong .

IEEE TRANSACTIONS ON POWER ELECTRONICS, 2007, 22 (01) :69-79

[5]

LUO P, 2006, POW EL SPEC C 2006 P, P1

[6]

Luo P, 2008, INT C COMMUN CIRCUIT, P1442

[7]

MAKSIMOVIC, 2006, Patent No. 7106040

[8]

MARK T, 2004, IEEE T POWER ELECTR, V19, P757

[9]

TONG G, 2007, MODELING ENERGY CONS, P1922

[10] A 4-μA quiescent-current dual-mode digitally controlled buck converter IC for cellular phone applications [J].

Xiao, JW ;

Peterchev, AV ;

Zhang, JH ;

Sanders, SR .

IEEE JOURNAL OF SOLID-STATE CIRCUITS, 2004, 39 (12) :2342-2348

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