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The multiphase buck converter is a circuit topology where basic buck converter circuits are placed in parallel between the input and load. Each of the n "phases" is turned on at equally spaced intervals over the switching period. This circuit is typically used with the synchronous buck topology, described above.
The buck–boost converter is a type of DC-to-DC converter that has an output voltage magnitude that is either greater than or less than the input voltage magnitude. It is equivalent to a flyback converter using a single inductor instead of a transformer. [1] Two different topologies are called buck–boost converter. Both of them can produce a ...
Comparison of non-isolated switching DC-to-DC converter topologies: Buck, Boost, Buck-Boost, Ćuk. The input is left side, the output with load is right side. The switch is typically a MOSFET, IGBT, or BJT transistor. The Ćuk converter [1] (Serbo-Croatian:, English: / ˈ tʃ uː k /) is a type of buck-boost converter with low ripple current. [2]
The boost/buck capabilities of the SEPIC are possible because of capacitor C1 and inductor L2. Inductor L1 and switch S1 create a standard boost converter , which generates a voltage ( V S1 ) that is higher than V IN , whose magnitude is determined by the duty cycle of the switch S1.
Fig. 1: Schematic of a flyback converter. The flyback converter is used in both AC/DC, and DC/DC conversion with galvanic isolation between the input and any outputs. The flyback converter is a buck-boost converter with the inductor split to form a transformer, so that the voltage ratios are multiplied with an additional advantage of isolation.
In typical operation where a source voltage is located at the left-hand side input terminals, the left-hand bridge operates as a boost converter and the right-hand bridge operates as a buck converter. In regenerative mode, the reverse is true with the left-hand bridge operating as a buck converter and the right as the boost converter.
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Patrizio Vinciarelli and Jay M. Prager, “Zero-current switching forward power conversion apparatus and method with controllable energy transfer,” U.S. Patent 5,235,502, issued on August 10, 1993 Patrizio Vinciarelli and Theodore R. Harpley, "DC to DC power converter", U.S. Design Patent 297,928, issued on October 4, 1988