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Simple Slew-Rate Control Technique Cuts Turn-ON Energy


The reduction of switching losses in power electronic systems such as drives is limited by EMI or parameters like the slope of switched voltages. This behavior is usually fixed by selecting the effective gate resistance of power transistors. It cannot be adapted spontaneously during operation. This article shows a simple way to overcome this dilemma by operating conventional gate-driver ICs in parallel. It also presents an evaluation of characterisation data regarding improvements of the turn-ON energy.

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