Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Reexamination Certificate
2006-03-21
2006-03-21
Riley, Shawn (Department: 2838)
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
C363S021150
Reexamination Certificate
active
07016204
ABSTRACT:
A close-loop PWM controller for a primary-side controlled power converter is provided. A voltage-waveform detector produces a voltage-feedback signal and a discharge-time signal. A current-waveform detector generates a current-waveform signal by measuring a primary-side switching current. An integrator generates a current-feedback signal by integrating the current-waveform signal with the discharge-time signal. A time constant of the integrator is correlated with a switching period of the switching signal, therefore the current-feedback signal is proportional to the output current of the power converter. The close-loop PWM controller further including a voltage-loop error amplifier and a current-loop error amplifier. A PWM circuit and comparators control the pulse width of the switching signal in response to the outputs of the voltage-loop error amplifier and the current-loop error amplifier. The output voltage and the maximum output current of the power converter are therefore regulated.
REFERENCES:
patent: 6118675 (2000-09-01), Lionetto et al.
patent: 6853563 (2005-02-01), Yang et al.
Hung Guo-Kiang
Lin Jenn-yu G.
Yang Ta-yung
J.C. Patents
Riley Shawn
System General Corp.
LandOfFree
Close-loop PWM controller for primary-side controlled power... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Close-loop PWM controller for primary-side controlled power..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Close-loop PWM controller for primary-side controlled power... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3581006