Dongjie Cheng is an analog and mixed-signal IC design engineer with Texas Instruments Inc., Dallas, Texas. He holds a PhD from the State University of New York, Stony Brook. Email address: dcheng@ti.com Web site: http://www.ti.com
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March 13, 2008[Ideas For Design] Add Fail-Safe Shoot-Through Protection To Power MOSFET
MOSFETs are widely used as power switching elements in regulators and motor controllers. They can be either discrete devices or integrated into ICs in various H-bridge configurations. A common arrangement uses a high-side (HS) power MOSFET, M1, and a low-side (LS) MOSFET, M2, to drive an inductive load (Fig. 1). When the HS FET is switched on and LS FET is switched off,...
