Boost and up-down switching regulator with synchronous freewheeling mosfet
作者： Richard K. Williams
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摘要: A freewheeling MOSFET is connected in parallel with the inductor a switched DC/DC converter. When turned on during switching operation of converter, while low-side and energy transfer MOSFETs are off, current circulates or 'freewheels' through MOSFET. The frequency converter thereby made independent lengths magnetizing stages, allowing far greater flexibility operating overcoming numerous problems associated conventional converters. For example, may operate either step-up step-down mode even transition for one to other as values input voltage desired output vary.
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