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发表于 2009-10-6 09:30:11
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A single-inductor dual buck-boost output (SIDBBO) converter is
proposed to provide compact size and long battery life to portable
devices. The proposed adaptive current control mode (ACCM)
reduces cross-regulation and power losses since ACCM adaptively
controls inductor current for output regulating. Moreover, adaptive
body switch (ABS) addresses potential leakage and latch-up, which
occur when N-well bias vary with supply voltage. Owing to ACCM
and ABS, efficiency achieves 92% and rises from 65% to 88% at
heavy and light loads. |
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