Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Reexamination Certificate
2005-11-01
2005-11-01
Berhane, Adolf (Department: 2838)
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
C363S034000
Reexamination Certificate
active
06961251
ABSTRACT:
Method and apparatus are disclosed for providing a constant voltage, high frequency sinusoidal output across a varying load, using either a single or multiple switch topology operating at constant frequency while maintaining high efficiency over the entire load range. This embodiment is especially suited to applications which require the sinusoidal voltage be held very close to a desired value in the presence of rapid changes in the conductance of the load, even in the sub-microsecond time domain as is common in computer applications and the like and in powering electronics equipment, especially a distributed system and especially a system wherein low voltage at high current is required. Embodiments and sub elements provide energy storage for low voltage, high current electronic loads, an ability to supply current with rapid time variation, connection of the energy storage element to the electronic load through specially configured conductors designed to minimize the created magnetic field around said conductors, providing extremely low inductance connections, permitting larger energy storage elements to be utilized, permitting energy storage to be located relatively remotely from the powered electronic load, and a steady voltage from a transformer isolated, high frequency ac to dc converter under varying load without the necessity for feedback control, among other aspects. The addition of capacitors which interact with the leakage inductance of the transformer to produce a natural regulation condition is used and the relationship between the value of the leakage inductance of the transformer and that of the added capacitances is different from the condition of resonance at the operating frequency.
REFERENCES:
patent: 3628123 (1971-12-01), Rosa et al.
patent: 3848175 (1974-11-01), Demarest
patent: 3919656 (1975-11-01), Sokal et al.
patent: 4205368 (1980-05-01), Erche et al.
patent: 4449174 (1984-05-01), Ziesse
patent: 4605999 (1986-08-01), Bowman et al.
patent: 4785387 (1988-11-01), Lee et al.
patent: 4788634 (1988-11-01), Schlecht et al.
patent: 4891746 (1990-01-01), Bowman et al.
patent: 5019717 (1991-05-01), McCurrey et al.
patent: 5179512 (1993-01-01), Fisher et al.
patent: 5187457 (1993-02-01), Chawla et al.
patent: 5187580 (1993-02-01), Porter, Jr. et al.
patent: 5204809 (1993-04-01), Andresen
patent: 5406051 (1995-04-01), Lai
patent: 5444608 (1995-08-01), Jain et al.
patent: 5541490 (1996-07-01), Sengupta et al.
patent: 5579524 (1996-11-01), Kikinis
patent: 5581454 (1996-12-01), Collins
patent: 5701096 (1997-12-01), Higashiho
patent: 5712772 (1998-01-01), Telefus et al.
patent: 5757171 (1998-05-01), Babcock
patent: 5808453 (1998-09-01), Lee et al.
patent: 5867715 (1999-02-01), Lin et al.
patent: 5877611 (1999-03-01), Brkovic
patent: 5939868 (1999-08-01), Hall et al.
patent: 5973944 (1999-10-01), Nork
patent: 5982645 (1999-11-01), Levran et al.
patent: 5991168 (1999-11-01), Farrington et al.
patent: 6023154 (2000-02-01), Martinez
patent: 6046546 (2000-04-01), Porter et al.
patent: 6052790 (2000-04-01), Brown
patent: 6055163 (2000-04-01), Wagner et al.
patent: 6094038 (2000-07-01), Lethellier
patent: 6144194 (2000-11-01), Varga
patent: 6215290 (2001-04-01), Yang et al.
patent: 6232754 (2001-05-01), Liebler et al.
patent: 6268716 (2001-07-01), Burstein et al.
patent: 6281666 (2001-08-01), Tressler et al.
patent: 6292738 (2001-09-01), Brooks et al.
patent: 6307757 (2001-10-01), Porter et al.
patent: 6310789 (2001-10-01), Nebrigic et al.
patent: 6356039 (2002-03-01), Huot et al.
patent: 6362986 (2002-03-01), Schultz et al.
patent: 6370046 (2002-04-01), Nebrigic et al.
patent: 6429723 (2002-08-01), Hastings
patent: 6453421 (2002-09-01), Taylor
patent: 6426964 (2002-10-01), Porter et al.
patent: 6462963 (2002-10-01), Wittenbreder
patent: 6462964 (2002-10-01), Porter et al.
patent: 6538930 (2003-03-01), Ishii et al.
patent: 6545450 (2003-04-01), Ledenev et al.
patent: 6570435 (2003-05-01), Hastings
patent: 6583992 (2003-06-01), Porter et al.
patent: 6686727 (2004-02-01), Ledenev et al.
patent: 6694438 (2004-02-01), Porter et al.
patent: 6696823 (2004-02-01), Ledenev
patent: 6754086 (2004-06-01), Harris et al.
patent: 6771059 (2004-08-01), Zwicker
patent: 6791848 (2004-09-01), Porter et al.
patent: 6807073 (2004-10-01), Scarlatescu
patent: 2004/0085790 (2004-05-01), Porter et al.
patent: 0 854 564 (1998-07-01), None
patent: 08023676 (1996-01-01), None
patent: 09135542 (1997-05-01), None
patent: 09261953 (1997-10-01), None
patent: 09312967 (1997-12-01), None
patent: WO 00/57543 (2000-09-01), None
patent: WO 01/03279 (2001-01-01), None
patent: WO 02/17469 (2002-02-01), None
Briggs, D., et al, “A Fast, Efficient Synchronous-Buck Controller for Microprocessor Power Supplies”, Texas Instrument Incorporation, published in the Official Proceedings of the 13th International HFPC, pp. 182-198 (1998).
Li, Jieli, Charles Sullivan, and Aaron Schultz, “Coupled-Inductor Design Optimization for Fast-Response Low-Voltage DC-DC Converters”, IEEE, Thayer School of Engineering, Dartmouth College, 7 pages, 2002.
Kassakian, J.G. and Schlecht, M., “High-Frequency High-Density Converters for Distributed Power Supply Systems,” Proceedings of the IEEE, vol. 76, No. 4, , pp. 362-376 (1988).
Martin, H., et al., “Improved Multi-Phase Coupled Inductor Topologies”, HFPC Proceedings, May 1992, pp. 340-349.
International Preliminary Examination Report for PCT/US01/25749, Jul. 10, 2002.
Maxim Integrated Products, “Regulated 3.5V/5.0V Step-UP/Step Down Charge Pump,” 2001, 8 pages.
Maxim Integrated Products, “50mA Regulated Step-Down Charge Pump for 1.8V or 1.9V Logic,” 2000, 8 pages.
PCT Application, PCT/US00/07779, entitled “High Frequency Switch-mode DC Powered Computer System”, dated Mar. 23, 2000.
PCT Application, PCT/US01/25749, entitled “Low-Voltage, High-Current DC Computer Power System”, filed Aug. 17, 2001.
PCT Application, PCT/US00/18086, entitled “System for Controlling the Delivery of Power to DC Computer Components”, filed Jun. 30, 2000.
Pietkiewicz, A. and Tollik, D., “Coupled Inductor Current Doubler Topology in Phase Shifted Full-Bridge DC-DC Converter”, pp. 41-48, 1998.
Redl, R. and Erisman, B. “Designing Minimum Cost VRM 8.2/8.3 Compliant Converters”, published in the Official Proceedings of the 13th International HFPC pp. 172-181 (1998).
U.S. Appl. No. 10/030,379, filed Jan. 2, 2002, Entitle Multiple Element Rectification Circuit, 106 pages and 34 drawings as originally filed and including Article 34 amendments and a Preliminary Amendment.
U.S. Appl. No. 10/10/912,443, filed Aug. 4, 2004, Entitle Multiple Element Rectification Circuit, 145 pages and 34 drawings and a Preliminary Amendment.
Wong, Pit-Leong; Qiaoqiao Wu, Peng Xu, Bo Yang and Fred C. Lee, “Investigating Coupling Inductors in the Interleaving QSW VRW” University, Blacksburg, VA 24061, Mar. 2000.
Wong, Pit-Leong; Fred C. Lee, Xiaochuan Jia and Daan van Wyk “A Novel Modeling Concept for Multi-coupling Core Structures”, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, Mar. 2001.
Xu, Peng, Qiaoqiao Wu, Pit-Leong Wong and Fred C. Lee, “A Novel Integrated Current Doubler Rectifier” Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, Feb. 2000.
Zhou, X. et al., presented by Dr. Fred C. Lee, “Voltage Regulator Module for Future Generation of Processors” Document prepared for the Center for Power Electronics Systems, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, Nov. 10, 1998.
Gurov Gennady G.
Ledenev Anatoli V.
Porter Robert M.
Advanced Energy Industries Inc.
Berhane Adolf
Santangelo Law Offices P.C.
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