Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Current driver
Reexamination Certificate
2005-11-29
2005-11-29
Callahan, Timothy P. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Current driver
C327S112000, C327S434000
Reexamination Certificate
active
06970023
ABSTRACT:
Disclosed are methods and apparatus for isolating and driving a power supply or power amplifier circuit. The circuits and methods provide for using a modulated PWM input signal and its complement to drive one or more core-less transformers providing an isolated power supply circuit output signal reproducing the PWM input signal. Preferred methods of the invention are disclosed in which steps for receiving and modulating a PWM input signal and its complement are included. In further steps, the modulated PWM signal and its complement control an isolated output driver to provide a power supply circuit output signal reproducing the PWM input signal. Embodiments of the invention are disclosed in which a circuit is configured for receiving a PWM input signal, providing isolation, and outputting a PWM output signal. The circuits include modulators for modulating a PWM input signal and its complement. Pulse transformer stages deliver the modulated PWM signal and its complement to the respective gates of power transistors of gate driver output stages. At an output terminal, a PWM output signal responsive to the PWM input signal is produced.
REFERENCES:
patent: 4777382 (1988-10-01), Reingold
patent: 4859921 (1989-08-01), Archer
patent: 4937470 (1990-06-01), Zeiler
patent: 5036226 (1991-07-01), Tonnu et al.
patent: 5051609 (1991-09-01), Smith
patent: 5349273 (1994-09-01), Pacholok
patent: 5438294 (1995-08-01), Smith
patent: 5514921 (1996-05-01), Steigerwald
patent: 5675276 (1997-10-01), Goel
patent: 5754732 (1998-05-01), Vlahu
patent: 5786687 (1998-07-01), Faulk
patent: 5892643 (1999-04-01), Esser et al.
patent: 5939927 (1999-08-01), Myers
patent: 6229356 (2001-05-01), Miettinen
patent: 6473317 (2002-10-01), Simopoulos
patent: 6674658 (2004-01-01), Mao et al.
patent: 6724642 (2004-04-01), Brkovic
patent: 6791851 (2004-09-01), Brkovic
Coreless Printed Circuit Board (PCB) Transformers for Power MOSFET/IGBT Gate Drive Circuits, Hui, Chung, Tang, IEEE Transactions on Power Electronics, vol. 14, No. 3, May 1999.
Brady III W. James
Callahan Timothy P.
Moore J. Dennis
Nguyen Hai L.
Telecky , Jr. Frederick J.
LandOfFree
Modulated transistor gate driver with planar pulse transformer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Modulated transistor gate driver with planar pulse transformer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Modulated transistor gate driver with planar pulse transformer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3515379