Fumiyasu Utsunomiya

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We developed a 0.35-V inductorless DC-DC converter using non-SOI CMOS technology. To activate a ring oscillator circuit at an input voltage of 0.35 V, we deployed depletion-mode NMOS transistors in a ring oscillator. Generated 0.35-V clock signals were boosted to nominal 0.7-V clock signals by voltage doubler circuits using depletion-mode NMOS transistors.(More)
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