Electricity: power supply or regulation systems – Output level responsive – Using a three or more terminal semiconductive device as the...
Reexamination Certificate
2006-01-24
2006-01-24
Han, Jessica (Department: 2838)
Electricity: power supply or regulation systems
Output level responsive
Using a three or more terminal semiconductive device as the...
C323S225000
Reexamination Certificate
active
06989661
ABSTRACT:
A pulse width modulation system for use in a switching power supply circuit provides high-resolution pulse width modulated signals. The pulse width modulation system is configured to receive a control signal comprising a (m+n)-bit binary word and to provide a pulse width modulated signal with a predetermined average duty cycle having a resolution of substantially 2−(m+n). The pulse width modulation system includes a timing circuit for providing 2mtiming signals, a dithering circuit, and a signal generator. Upon receiving the control signal, the dithering circuit is configured to provide a modified control signal, which comprises a series of up to 2nm-bit binary words. The signal generator is configured to receive the timing signals and the modified control signal and to provide the pulse width modulated signal having a duty cycle, which, when averaged over 2ntiming cycles, is approximately equal to the predetermined average duty cycle. The pulse width modulated signal is used by a switching power supply circuit to control at least one power switching device.
REFERENCES:
patent: 3660672 (1972-05-01), Berger et al.
patent: 4194147 (1980-03-01), Payne et al.
patent: 4538073 (1985-08-01), Freige et al.
patent: 4538101 (1985-08-01), Shimpo et al.
patent: 4622627 (1986-11-01), Rodriguez et al.
patent: 5053920 (1991-10-01), Staffiere et al.
patent: 5073848 (1991-12-01), Steigerwald et al.
patent: 5377090 (1994-12-01), Steigerwald
patent: 5481140 (1996-01-01), Maruyama et al.
patent: 5815018 (1998-09-01), Soborski
patent: 5990669 (1999-11-01), Brown
patent: 6191566 (2001-02-01), Petricek et al.
patent: 6211579 (2001-04-01), Blair
patent: 6262900 (2001-07-01), Suntio
patent: 6421259 (2002-07-01), Brooks et al.
patent: 6429630 (2002-08-01), Pohlman et al.
patent: 2001/0033152 (2001-10-01), Pohlman et al.
patent: 2002/0073347 (2002-06-01), Zafarana et al.
patent: 2003/0122429 (2003-07-01), Zhang et al.
patent: 2003/0142513 (2003-07-01), Vinciarelli
patent: 2003/0201761 (2003-10-01), Harris
patent: 2004/0027101 (2004-02-01), Vinciarelli
33702 Microprocessor Power Supply (3.0A) Analog Products MC33702 Fact Sheet; Motorola/Digital dna/ Power Management Switching; pp. 1-4 (no date).
“Motorola Switch Mode Power Supply With Multiple Linear Regulators And High Speed CAN Transceiver” Motorola, Inc. 2002; digital dna; Analog Marketing; Rev. 2.5, Nov. 2002; 33394; Multi-Output Power Supply Semiconductor Technical Data.
“Power Management Solutions For Networking Applicants”; Presented by Luc Darmon Smart Networks Developer Forum 2003—Jun. 4-6 Euro-Disney Paris, France; Motorola digital dna; www.motorola.com/sndf; pp. 1-26.
Preliminary Information 1.5 A Switch-Mode Power Supply With Linear Regulator 33701; Power Supply Integrated Circuit; Motorola Semiconductor Technical Data; Analog Marketing MC33701/D Rev. 1.0, May 2003; Motorola digital dna; pp. 1-24.
“The 1 2-C Bus Specification” Version 2.1; Jan. 2000; document order number: 9398 393 40011; Phillips Semiconductors; pp. 1-46.
“System Management Bus Specification” Smart Battery System Specifications; Revision 1.1 Dec. 11, 1998; SBS Implementers Forum; Version 1.1; pp. 1-39.
“KEKB Power Supply Interface Controller Module” by A. Akiyama, T. Nakamura, M. Yoshida, T. Kubo, N. Yamamoto and T. Katoh KEK, High Energy Accelerator Research Organization, 1-1 Ohio, Tsukuba 305, Japan (no date).
“Magnet Power Supply Control System KEKB Accelerators” by T.T. Nakamura, A. Akiyama, T. Katoh, Ta. Kubo, N. Yamamoto, M. Yoshida, KEK, Tsukuba, Japan International Conference On Accelerator And Large Experimental Physics Control Systems, 1999, Trieste, Italy, pp. 406-408 (no month).
“Electronics Products” by Paul Birman and Sarkis Nercessian, Kepco, Inc. Flushing NY vol. 37, No. 10, Electronic Products, Mar. 1995; The Engineer's Magazine of Product Technology; Power Supply Special; DSO Samples Single Shots at 10 Gsamples/s Speech Recognition On A Single Chip LCD Has Flat-Panel Benefits At CRT Cost Product Update: High-Performance OP AMPS; A Hearst Business Publication; pp. 1, 5, 33-34.
Han Jessica
O'Melveny & Myers LLP
Power-One, Inc.
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