Electricity: power supply or regulation systems – In shunt with source or load
Reexamination Certificate
2006-03-28
2006-03-28
Vu, Bao Q. (Department: 2838)
Electricity: power supply or regulation systems
In shunt with source or load
C323S283000, C323S220000
Reexamination Certificate
active
07019497
ABSTRACT:
Methods for synchronizing non-constant frequency switching regulators with a phase locked loop are disclosed. The methods enable non-constant frequency switching regulators to be synchronized with a phase locked loop to achieve constant frequency operation in steady state while retaining the advantages of non-frequency operation to improve transient response and operate over a wider range of duty cycles. In addition, the methods enable multiple non-constant frequency regulators to be synchronized and operated in parallel to deliver higher power levels to the output than a single switching regulator.
REFERENCES:
patent: 3458798 (1969-07-01), Howard, Jr. et al.
patent: 3571697 (1971-03-01), Phillips
patent: 3579091 (1971-05-01), Clarke et al.
patent: 3581186 (1971-05-01), Weinberger
patent: 3582758 (1971-06-01), Gunn
patent: 3585491 (1971-06-01), Petersen
patent: 3725766 (1973-04-01), Brown
patent: 3733540 (1973-05-01), Hawkins
patent: 3772588 (1973-11-01), Kelly et al.
patent: 3784893 (1974-01-01), Rando
patent: 3863128 (1975-01-01), Wilwerding
patent: 3879647 (1975-04-01), Hamilton et al.
patent: 3992638 (1976-11-01), Sauvanet
patent: 4013939 (1977-03-01), Biess et al.
patent: 4035710 (1977-07-01), Joyce
patent: 4071884 (1978-01-01), Maigret
patent: 4160288 (1979-07-01), Stuart et al.
patent: 4309650 (1982-01-01), Boros et al.
patent: 4326245 (1982-04-01), Saleh
patent: 4395675 (1983-07-01), Toumani
patent: 4428015 (1984-01-01), Nesler
patent: 4458199 (1984-07-01), Evans et al.
patent: 4462069 (1984-07-01), Becky
patent: 4479174 (1984-10-01), Cates
patent: 4493017 (1985-01-01), Kammiller et al.
patent: 4519024 (1985-05-01), Federico et al.
patent: 4541041 (1985-09-01), Park et al.
patent: 4554499 (1985-11-01), Sherman et al.
patent: 4578630 (1986-03-01), Grosch
patent: 4610521 (1986-09-01), Inoue
patent: 4634892 (1987-01-01), Isbell et al.
patent: 4634956 (1987-01-01), Davis et al.
patent: 4672303 (1987-06-01), Newton
patent: 4672518 (1987-06-01), Murdock
patent: 4674020 (1987-06-01), Hill
patent: 4683529 (1987-07-01), Bucher, II
patent: 4706177 (1987-11-01), Josephson
patent: 4709315 (1987-11-01), Ramos
patent: 4712169 (1987-12-01), Albach
patent: 4716514 (1987-12-01), Patel
patent: 4719552 (1988-01-01), Albach et al.
patent: 4727308 (1988-02-01), Huljak et al.
patent: 4754385 (1988-06-01), McDade et al.
patent: 4801859 (1989-01-01), Dishner
patent: 4813066 (1989-03-01), Holtz et al.
patent: 4814684 (1989-03-01), McCurdy
patent: 4819122 (1989-04-01), Gontowski, Jr.
patent: 4823070 (1989-04-01), Nelson
patent: 4837495 (1989-06-01), Zansky
patent: 4843532 (1989-06-01), Freedman
patent: 4866587 (1989-09-01), Wadlington
patent: 4870555 (1989-09-01), White
patent: 4884183 (1989-11-01), Sable
patent: 4902957 (1990-02-01), Cassani et al.
patent: 4922404 (1990-05-01), Ludwig et al.
patent: 4928200 (1990-05-01), Redl et al.
patent: 4929882 (1990-05-01), Szepesi
patent: 4931716 (1990-06-01), Jovanovic et al.
patent: 4996638 (1991-02-01), Orr
patent: 5028861 (1991-07-01), Pace et al.
patent: 5034871 (1991-07-01), Okamoto et al.
patent: 5045712 (1991-09-01), Baggenstoss
patent: 5066900 (1991-11-01), Bassett
patent: 5068575 (1991-11-01), Dunsmore et al.
patent: 5081411 (1992-01-01), Walker
patent: 5097196 (1992-03-01), Schoneman
patent: 5128603 (1992-07-01), Wölfel
patent: 5130561 (1992-07-01), Elliott et al.
patent: 5134355 (1992-07-01), Hastings
patent: 5138249 (1992-08-01), Capel
patent: 5144547 (1992-09-01), Masamoto
patent: 5170333 (1992-12-01), Niwayama
patent: 5177676 (1993-01-01), Inam et al.
patent: 5179511 (1993-01-01), Troyk et al.
patent: 5184129 (1993-02-01), Fung et al.
patent: 5193211 (1993-03-01), Nobusawa
patent: 5237606 (1993-08-01), Ziermann
patent: 5309078 (1994-05-01), Cameron
patent: 5315497 (1994-05-01), Severinsky
patent: 5335162 (1994-08-01), Martin-Lopez et al.
patent: 5396412 (1995-03-01), Barlage
patent: 5408162 (1995-04-01), Williams
patent: 5481178 (1996-01-01), Wilcox et al.
patent: 5548189 (1996-08-01), Williams
patent: 5568044 (1996-10-01), Bittner
patent: 5602465 (1997-02-01), Clemente
patent: 5627460 (1997-05-01), Bazinet et al.
patent: 5731694 (1998-03-01), Wilcox et al.
patent: 5875104 (1999-02-01), Prager
patent: 5929620 (1999-07-01), Dobkin et al.
patent: 5982645 (1999-11-01), Lowran et al.
patent: 5994885 (1999-11-01), Wilcox et al.
patent: 0090237 (1983-10-01), None
patent: 0 428 377 (1991-05-01), None
patent: 60-32565 (1985-02-01), None
patent: 60-156269 (1985-08-01), None
patent: 63-307510 (1988-12-01), None
patent: 3-113986 (1991-11-01), None
patent: 4-42771 (1992-02-01), None
patent: 4-49844 (1992-02-01), None
patent: 4-101286 (1992-09-01), None
patent: 4-128086 (1992-11-01), None
Analog Devices, Inc., “High Efficiency Synchronous Step-Down Switching Regulators ADP1148, ADP1148-3.3, ADP1148-5,” Datasheet, pp. 1-14, 1997**.
Archer, William R., “Current-Driven Synchronous Rectifier,” Motorola TMOS Power FET Design Ideas, BR316, pp. 9-10, 1985.
Archer, William R., “Current Drives Synchronous Rectifier,” EDN, p. 279, Nov. 28, 1985 ,.
Blanchard, Richard, et al., “MOSFETs Schottky Diodes Vie for Low-Voltage-Supply Designs,” EDN, p. 197, Jun. 28, 1984.
Borghi et al., “Discontinuous Conduction Mode Power Switching Regulator IC,” PCI Oct. 1988 Proceedings, pp. 31-41,.
Brown, Marty, “Practical Switching Power Supply Design,” pp. 20-34, Academic Press, Inc., 1990.
Business Wire, “Micro Linear announces first single-chip power controller for notebook computers,” Apr. 16, 1992.
Casey, L.F., “Circuit Design For 1-10 MHZ DC-DC Conversion,” Massachusetts Institute of Technology ScD. Thesis, Fig. 3-15, pp. 73-80, 1989.
Cassani, John C. et al., “Sophisticated Control IC Enhances 1 MHz Current Controlled Regulator Performace,” Proceedings of HFPC, May 1992, pp. 167-173.
Cherry Semiconductor, “CS-5120 Synchronous NFET Buck Controller With V2 Architecture,” Datasheet, Apr. 8, 1997.
Chetty, P.R., “DC timers control dc-dc converters” Electronics, pp. 121 & 123, Nov. 13, 1975.
Chryssis, George, “High-frequency switching power supplies,” pp. 144-152 and 180-181, McGraw-Hill, 1989.
Dell Computer Corporation, “Dell Computer Introduces Advanced Notebook PC,” (alleged to contain UC1895, see Unitrode Advance Information Datasheet Oct. 5, 1992), Sep. 1991.
Dinsmore, D., “Dual regulator handles two input voltages,” EDN, Jan. 21, 1993.
Fisher, R. A. et al., “Performance of Low Loss Synchronous Rectifiers in a Series-Parallel Resonant DC-DC Converter,” Proceedings of the Fourth Annual IEEE Applied Power Electronics Conference and Exposition, pp. 240-246, Mar. 1989
Gauen, Kim, “Synchronous Rectifier Improves Step-Down Converter Efficiency,” PCIM, pp. 8, 11-12 & 14-15, Apr. 1993.
Gontowski et al., “Advanced New Integrated Circuits For Current-Mode Control,” Proceedings of the Power Electronics Show and Conference, pp. 341-352, Oct. 1986.
Goodenoungh, F., “Raise Switcher Efficiency Above 90%”, Electronic Design, Jan. 21, 1993.
Goodenough, Frank, “Low-Voltage Analog ICs Wait in the Wings,” Electronic Design, Sep. 3, 1992.
Goodenough, F., “Dozing IC Op Amps Wake Up For Input Signal,” Electronic Design, Dec. 5, 1991.
Goodenough, Frank, “Sychronous Rectifier UPS PC Battery Life,” Electronic Design, pp. 47-53, Apr. 16, 1992.
Gottlieb, I. M., “Practical Power-Control Techniques,” Howard W. Sams & Co., pp. 116-120, 1987.
Gottlieb, I. M., Electronic Power Control, TAB Books, pp. 107-111, 1991.
Gracie, Paul D., “Intermittent Converter Saves Power,” EDN, p. 151, Sep. 1, 1989.
Graf, Rudolf F., “Modern Dictionary of Electronics,” 6thEdition, pp. 402-403, 1984.
Grant, Duncan A. et al., “Power MOSFETS, Theory and Application,” pp. 239-256, Wiley-Interscience, 1989.
Harris Semiconductor, “HIP 5060 Power Control IC Single Chi
Flatness Randy G.
Umminger Christopher B.
Chang Chi-Hsin
Fish & Neave IP Group Ropes & Gray LLP
Linear Technology Corporation
Rowland Mark D.
Vu Bao Q.
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