04257087 is referenced by 167 patents and cites 1 patents.

An improved dc-to-dc converter is provided comprised of two inductances, an input inductance in series with the input source and an output inductance in series with the load, and between the two inductances, two storage capacitances in series with the two inductances. Switching means alternately connect the junction between the input inductance and the first series capacitance, and the junction between the second capacitance and output inductance, to a junction common to the source and load. A third inductance is connected between the junction of the two capacitances and the return current paths for the source and load.

In one of the embodiments of the invention, all three inductances are combined on the same core thus comprising a single magnetic circuit with three windings. In another embodiment of the invention an isolation transformer is first used to replace the third inductance. Again, both input and output inductor and isolation transformer are merged into a single magnetic circuit with four windings. In any of the embodiments of the invention, a zero current ripple can be obtained at both the input and the output simultaneously by a proper design of the magnetic circuit. A new method of integrated magnetics design is then disclosed to improve performance of other converter structures by properly merging their magnetics components.

Title
DC-to-DC switching converter with zero input and output current ripple and integrated magnetics circuits
Application Number
6/26541
Publication Number
4257087
Application Date
April 2, 1979
Publication Date
March 17, 1981
Inventor
Slobodan M Cuk
Huntington Beach
CA, US
Agent
Freilich Hornbaker Wasserman Rosen & Fernandez
Assignee
California Institute of Technology
CA, US
IPC
H02M 3/335
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