Conference Proceeding

High efficiency quasi-parallel Voltage Regulators

Center for Power Electron. Syst., Virginia Polytech. Inst. & State Univ., Blacksburg, VA
03/2008; DOI:10.1109/APEC.2008.4522814 pp.811 - 817 In proceeding of: Applied Power Electronics Conference and Exposition, 2008. APEC 2008. Twenty-Third Annual IEEE
Source: IEEE Xplore

ABSTRACT High efficiency voltage regulators (VR) are desired for battery life extension and energy saving. In this paper, a novel quasi-parallel VR architecture is proposed. Its working principle and small signal model are illustrated in detail. The proposed VR takes advantage of the high-efficiency, fast-transient unregulated converter and relies on it to deliver most of the output power, while uses low power Buck type converter to achieve voltage regulation. The simulation and preliminary experimental results demonstrate that the proposed VR can achieve 4%-5% higher efficiency than state-of-the-art multi-phase buck VR and it can eliminate all the output bulk capacitors with 600k Hz switching frequency.

0 0
 · 
0 Bookmarks
 · 
25 Views
Data provided are for informational purposes only. Although carefully collected, accuracy cannot be guaranteed. The impact factor represents a rough estimation of the journal's impact factor and does not reflect the actual current impact factor. Publisher conditions are provided by RoMEO. Differing provisions from the publisher's actual policy or licence agreement may be applicable.

Keywords

600k Hz switching frequency
 
low power Buck type converter
 
novel quasi-parallel VR architecture
 
preliminary experimental results
 
proposed VR
 
simulation
 
small signal model
 
state-of-the-art multi-phase buck VR
 
VR
 
working principle
 

Julu Sun