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"Shoot-through" in synchronous buck converters

Posted: 19 Feb 2010     Print Version  Bookmark and Share

Keywords:buck converters  synchronous buck circuit  CPU 

The synchronous buck circuit is in widespread use to provide point of use high current, low voltage power for CPU's, chipsets, peripherals etc. In the synchronous buck converter, the power stage has a "high-side" (Q1 below) MOSFET to charge the inductor, and a "Low-side" MOSFET, which replaces a conventional buck regulator's "catch diode" to provide a low-loss recirculation path for the inductor current.

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