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A 4k bits nonvolatile high-speed nanogap memory device was fabricated with a newly developed vertical nanogap structure and its memory characteristics were evaluated. The newly developed vertical nanogap structures realized controllable electrode gap and higher yield compared to the initial phase lateral type nanogap structure. The structures were integrated on a CMOS chip. The specially embedded...
Among eco-friendly electric vehicles, some incorporate DC/DC converters in their electrical drive systems to make full use of their power sources. For increasing the power density of the converters, a 3-phase interleaved converter using an inductor set of inductors and close-coupled inductors is investigated. The inductor set of a 3-phase topology is shown to be smaller in size and lose less power...
In a vehicle, radiational noise generated by the common-mode current in an inverter system is the cause of electromagnetic problems of in-vehicle radio antennas. This paper proposes a new method ”Z-matched ACC” for suppressing the common-mode current at AM band. With this method, the freewheel current, which reduces the common-mode current suppression effect at AM band in conventional voltage-cancellation...
The mechanism of common-mode noise current in control and gate-drive circuits on a chopper circuit is discussed. For high power density configurations, common-mode noise current flows not only in the main circuit, but also in the control and gate-drive circuits. This noise current increases the risk of control circuit misoperation, and might flow out from control and gate-drive circuits and interfere...
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