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 The Basic (unisolated, inverting) Boostbuck (Cuk) Converter   Separation into Boost and Buck Sections Note that the Boostbuck (Cuk) Converter can be separated into two halves, one in the form of the Boost Converter, the other in the form of a Buck Converter.  Duality of the Two Sections Now note that these two sections are duals of one another! The source and load have been omitted for clarity. Also that the direction of power flow in the Buck half has been reversed. This turns out to be necessary, when synthesizing the Boost and Buck from each other using duality. Note that the parallel impedance of L1 and C1 is seen by the transistor. Likewise, the series impedance of L2 and C2 is seen by the diode. It is these two impedances that must be in proper relation to one another in order to meet Dr. Middlebrook's criteria for stability and high performance! Background | Tips | Engineering vs. Science | | Isolation of the Cuk Converter | Historical Perspective | | Return Home | Safety First | Lesson in Ethics | The Consequences of Bad Design | Real World Applications | Deals | e-mail me! | |
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