High switching frequency, high efficiency CLL resonant converter with synchronous rectifier
Daocheng Huang Dianbo Fu Lee, F.C.
Virginia Tech, Blacksburg, VA, USA
This paper appears in: Energy Conversion Congress and Exposition, 2009. ECCE 2009. IEEE
Issue Date: 20-24 Sept. 2009
On page(s): 804 - 809
Location: San Jose, CA
Print ISBN: 978-1-4244-2893-9
INSPEC Accession Number: 10965070
Digital Object Identifier: 10.1109/ECCE.2009.5316211
Date of Current Version: 06 Ноябрь 2009
Abstract
In this paper, a CLL resonant tank (CLL) is presented as an attractive option in the front-end applications as DC/DC converter. This topology can achieve zero-voltage switching (ZVS) from zero load to full load, low turn off loss, ZCS for output rectifier, and easy to realize secondary rectification. A novel design methodology of CLL resonant converter is proposed based on the trade-off among efficiency, hold up time and ZVS requirement. A transformer structure for better performance in high frequency application is proposed. And current type synchronous rectifier (SR) drive scheme is used in this topology. An 800 kHz, 300 W CLL resonant converter prototype is made to verify the proposed design method.
Analysis and design of two-phase interleaved LLC resonant converter considering load sharing
Bong-Chul Kim Ki-Bum Park Gun-Woo Moon
KAIST, Daejeon, South Korea
This paper appears in: Energy Conversion Congress and Exposition, 2009. ECCE 2009. IEEE
Issue Date: 20-24 Sept. 2009
On page(s): 1141 - 1144
Location: San Jose, CA
Print ISBN: 978-1-4244-2893-9
INSPEC Accession Number: 10965209
Digital Object Identifier: 10.1109/ECCE.2009.5316291
Date of Current Version: 06 Ноябрь 2009
Abstract
Recently, the LLC series resonant converter (LLC-SRC) is widely used for many applications because it has many advantages over other power converters. However, it is difficult to apply this topology to high current applications because the current ripple stress on the output capacitor becomes severely high. Nevertheless, it is possible to reduce the output current ripple drastically as employing the interleaved technique. However, to ensure output current sharing, multiphase interleaved LLC-SRC causes design difficulty of resonant tanks, which consists of magnetizing inductance (LM), resonant inductance (LR), and resonant capacitance (CR). In this paper, design consideration to ensure output current sharing of multiphase interleaved LLC-SRC is proposed. In order to verify proposed design consideration, the laboratory experiments are executed and discussed with a 480 W prototype.
NB!!
DC/DC LLC Reference Design Using the dsPIC DSC
http://ww1.microchip.com/downloads/...LC_Appnotes.pdf
http://www.21dianyuan.com/bbs/attac...c2b37b9e18c.pdf
http://scholar.lib.vt.edu/theses/av...u_ETD_Final.pdf