Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Patent
1999-12-06
2000-10-17
Nguyen, Matthew
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
363 97, H02M 3335, H02M 324
Patent
active
061341231
ABSTRACT:
The switch-mode dc power supply includes a series circuit, a rectifier, an output smoothing circuit, detection circuit, an adding circuit, a triangular wave generator and a control signal generator. The series circuit includes a primary winding of a HF transformer, a semiconductor switching element and a current detection unit connected between two output terminals of a rectifier/smoothing circuit. The rectifier is connected to an end of a secondary winding of the HF transformer. The output smoothing circuit is connected between the rectifier and other end of the secondary winding. The detection circuit is connected to a connection point between the rectifier and the output smoothing circuit. The adding circuit is connected between the detection circuit and a connection point between the semiconductor switching element and the current detection unit. The adding circuit has a current mirror and a current detector. The triangular wave generator is connected to the adding circuit. And the control signal generator is connected between the adding circuit and a control electrode of the semiconductor switching element, and further is connected to the triangular wave generator. The adding circuit adds a voltage corresponding to a dc output signal at the secondary winding to a voltage corresponding to a current flowing in the semiconductor switching element so as to obtain an augmented voltage signal. The gate electrode is supplied with a drive signal keeping the "H" level until the augmented voltage signal reaches the triangular wave signal. Then, the power supply operates with good stability.
REFERENCES:
patent: 4764856 (1988-08-01), Rausch
patent: 5012401 (1991-04-01), Barlage
patent: 5717578 (1998-02-01), Afzal
patent: 5901051 (1999-05-01), Takahashi et al.
Nguyen Matthew
Sanken Electric Co. Ltd.
LandOfFree
Switch-mode DC power supply, monolithic IC and hybrid IC for the does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Switch-mode DC power supply, monolithic IC and hybrid IC for the, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Switch-mode DC power supply, monolithic IC and hybrid IC for the will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-475556