Electric power conversion systems – Current conversion – With condition responsive means to control the output...
Reexamination Certificate
2005-06-28
2005-06-28
Tokar, Michael (Department: 2819)
Electric power conversion systems
Current conversion
With condition responsive means to control the output...
C323S283000
Reexamination Certificate
active
06912144
ABSTRACT:
A multiple-phase DC—DC converter has a first series circuit comprising first and second output transistors coupled across an input voltage, a first phase voltage being provided at a first common connection between the first and second transistors, at least one second series circuit comprising third and fourth output transistors coupled in series across the input voltage, a second phase voltage being provided at a second common connection between the third and fourth transistors, a first output inductor for the first phase, at least one second output inductor for the at least one second phase, an output capacitor, a first pulse width modulator circuit comprising a first pulse width modulator comparator and a first fixed slope ramp generator, the first fixed slope ramp generator supplying a fixed slope ramp signal to one input of the first comparator, at least one second pulse width modulator circuit comprising a second pulse width modulator comparator and a variable slope ramp generator, the variable slope ramp generator supplying a variable slope ramp signal to one input of the second comparator, an error amplifier for comparing the output voltage of the converter to a reference voltage and providing an error amplifier output voltage to respective second terminals of each of the first and at least one second pulse width modulator comparators, a first current sense amplifier for determining the phase current in a first phase of the converter provided by the first series circuit, at least one second current sense amplifier for determining the phase current in at least one second phase of the converter provided by the at least one second series circuit and at least one share adjust amplifier for receiving outputs from each of the first and second current sense amplifiers and adjusting the slope of the variable slope ramp signal to adjust the current provided by the at least one second series circuit thereby to equalize the currents provided by the first and at least one second phases.
REFERENCES:
patent: 5861738 (1999-01-01), Becker-Irvin et al.
patent: 6130828 (2000-10-01), Rozman
patent: 6204649 (2001-03-01), Roman
patent: 6246222 (2001-06-01), Nilles et al.
patent: 6278263 (2001-08-01), Walters et al.
patent: 6282111 (2001-08-01), Illingworth
patent: 6414470 (2002-07-01), Liu et al.
patent: 6522115 (2003-02-01), Greitschus
patent: 6574124 (2003-06-01), Lin et al.
patent: 6674274 (2004-01-01), Hobrecht et al.
patent: 6678178 (2004-01-01), Lipcsei
patent: 6760238 (2004-07-01), Charych
International Rectifier Corporation
Nguyen Linh V.
Ostrolenk Faber Gerb & Soffen, LLP
Tokar Michael
LandOfFree
Method and apparatus for adjusting current amongst phases of... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for adjusting current amongst phases of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for adjusting current amongst phases of... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3521372