Method and apparatus for controlling a DC-DC converter

Details Method and apparatus for controlling a DC-DC converter Method and apparatus for controlling a DC-DC converter

2005-05-31

2005-05-31

Jan, Shawn Riley (Department: 2838)

Electric power conversion systems

Current conversion

Including automatic or integral protection means

C363S021100

Reexamination Certificate

active

06900996

ABSTRACT:
Method and apparatus for controlling a DC-DC converter change the switching frequency of the switching devices and the on-off ratio of the switching devices. The on-off ratio can be changed in response to the output voltage and the switching frequency can be changed in response to the input voltage supplied by the DC power supply. Alternatively, the switching frequency can be changed while the on-off ratio is fixed at a certain value, and the on-off ratio can be changed while the switching frequency is fixed at a predetermined value after the switching frequency has reached the predetermined value, thereby preventing the switching frequency from exceeding the predetermined value.

REFERENCES:
patent: 6088243 (2000-07-01), Shin
patent: 6483722 (2002-11-01), Nozawa et al.
patent: 7-123706 (1995-05-01), None
“The miniaturization of the AC adaptor by the SMZ system converter”; Ono Junichi et al.; 97 Switching-Regulator Handbook; Electronics Technology 1997-3; pp. 69-74.

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