| 摘要 |
PROBLEM TO BE SOLVED: To provide a factorized power conversion apparatus of high efficiency which has a point load sine-wave amplitude converters. SOLUTION: A factorized power architecture ("FPA") includes a power regulator providing controlled DC bus voltages distributed and converted to load voltages at the load, using DC voltage transformation modules ("VTMs") having fixed transformation ratios. Optional feedback from the load improves regulation. A sine-wave amplitude converter ("SAC")VTM locks the conversion frequency to resonance of a resonant circuit including a transformer; uses complementary primary switches, balanced switching, and a high conversion duty cycle; may use primary ZVS and secondary ZVS and ZCS, low Q, and a low profile core structure; and may exhibit greater than 400 Watts/cubic-inch power density and 95% efficiency. Common-source gate-control topologies efficiently drive switches higher than 1 MHz. Symmetrical power trains reduce common-mode noise. A DC-DC converter includes a non-isolated converter followed by a SAC. COPYRIGHT: (C)2004,JPO
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