Control arrangement for a resonant mode power converter

Details Control arrangement for a resonant mode power converter Control arrangement for a resonant mode power converter

2008-01-18

2010-12-07

Riley, Shawn (Department: 2838)

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

C363S140000

Reexamination Certificate

active

07848117

ABSTRACT:
The switching frequency of an LLC converter is controlled by a control unit to which a feedback circuit provides a first current dependent upon the output voltage of the converter. An oscillator circuit produces a sawtooth waveform at a frequency dependent upon the first current, up to a limit equal to a second current set by a resistor. Two complementary switch control signals are produced for controlling two switches of the converter for conduction in alternate cycles of the sawtooth waveform. A timer produces dead times between the two complementary switch control signals in dependence upon the second current. Another resistor provides a current constituting a minimum value of the first current, and a charging current of a capacitor in series with a resistor modifies the first current for soft starting of the converter.

REFERENCES:
patent: 5500792 (1996-03-01), Jeon et al.
patent: 5565761 (1996-10-01), Hwang
patent: 5642065 (1997-06-01), Choi et al.
patent: 5798635 (1998-08-01), Hwang et al.
patent: 6215288 (2001-04-01), Ramsey et al.
patent: 6249876 (2001-06-01), Balakrishnan et al.
patent: 6272025 (2001-08-01), Riggio et al.
patent: 6307361 (2001-10-01), Yaakov et al.
patent: 6437994 (2002-08-01), Blom et al.
patent: 6462966 (2002-10-01), Leung et al.
patent: 6469917 (2002-10-01), Ben-Yaakov
patent: 6728121 (2004-04-01), Ben-Yaakov et al.
patent: 6903536 (2005-06-01), Yang
patent: 7042743 (2006-05-01), Pidutti et al.
patent: 7184280 (2007-02-01), Sun et al.
patent: 7440297 (2008-10-01), Adragna et al.
patent: 2003/0223255 (2003-12-01), Ben-Yaakov et al.
patent: 2007/0063684 (2007-03-01), Adragna et al.
patent: 2007/0242487 (2007-10-01), Orr
patent: 2008/0197817 (2008-08-01), Colbeck et al.
patent: 2008/0198638 (2008-08-01), Reinberger et al.
patent: 2009/0091957 (2009-04-01), Orr et al.
Fairchild Semiconductor, “Application Note 42047; Power Factor Correction (PFC) Basics,” Rev.0.9.0, Aug. 19, 2004, 11 pgs.
On Semiconductor, “Overview of Power Factor Correction Approaches,” Power Factor Correction Handbook, Chapter 1, HBD853/D, Rev. 2, Aug. 2004, pp. 5-17.
Ben-Yaakov et al., “The Dynamics of a PWM Boost Converter with Resistive Input,” IEEE Transactions on Industrial Electronics, vol. 46, No. 3, Jun. 1999, pp. 613-619.
Adragna, “AN1792 Application Note; Design of Fixed-Off-Time-Controlled PFC Pre-Regulators with the L6562,” STMicroelectronics, Nov. 2003, pp. 1-30.
Yang, “LLC Resonant Converter,” Chapter 4,Topology Investigation for Front End DC/DC Power Conversion for Distributed Power System, (dissertation submitted to the Faculty of Virginia Polytechnic Institute and State University, Sep. 12, 2003.
STMicroelectronics, “AN2321 Application Note; Reference Design: High Performance, L6599-based HB-LLC Adapter with PFC for Laptop Computers,” Aug. 2006, pp. 1-29.
STMicroelectronics, “AN2393 Application Note; Reference Design: Wide Range 200W L6599-based HB-LLC Resonant Converter for LCD TV & Flat Panels,” Sep. 2006, pp. 1-37.
STMicroelectronics, “L6563 L6563A; Advanced Transition-Mode PFC Controller,” Nov. 2006, pp. 1-37.
STMicroelectronics, “L6599; High-Voltage Resonant Controller,” Jul. 2006, pp. 1-36.
PCT/CA2008/000108—PCT International Search Report and Written Opinion, mailed Apr. 15, 2008.
PCT/CA2008/000109—PCT International Search Report and Written Opinion, mailed May 7, 2008.
PCT/CA2008/000111—PCT International Search Report and Written Opinion, mailed May 1, 2008.
Fairchild Semiconductor, “FAN4803: 8-Pin PFC and PWM Controller Combo,” Rev. 1.2.3, Nov. 2, 2004, p. 1.
PCT/CA2008/000108—International Preliminary Report on Patentability and Written Opinion, dated Jul. 28, 2009.
PCT/CA2008/000109—International Preliminary Report on Patentability and Written Opinion, dated Jul. 28, 2009.
PCT/CA2008/000111—International Preliminary Report on Patentability and Written Opinion, dated Jul. 28, 2009.

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