Yujiro Takeuchi

Carrier-Extraction Mechanism for MOS-Controllable Stored-Carrier Diode (MOSD)

Hiroshi Suzuki, Yujiro Takeuchi, Takashi Hirao, Tsubasa Moritsuka et autres

We clarified the carrier-extraction mechanism for a MOS-controllable stored-carrier diode (MOSD) in this paper. The MOSD dynamically controls the stored-carrier density to break through the trade-off between conduction loss and switching loss compared with a conventional p-n diode. Simulation results show that …

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Latest Technology Trends in Power Semiconductor Devices

Manabu Yoshino, Yujiro Takeuchi, Kota Ohi, Akira Nakajima

Efforts to achieve carbon neutrality are accelerating in order to solve global warming, a worldwide environmental problem. Efficient use of electric energy requires improved performance, higher functionality, and higher quality of power semiconductor devices, which are key components. In recent years, as …

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A Novel 6.5 kV Innovative Silicon Power Device (i-Si) with a Digital Carrier Control Drive (DCC-drive)

Tomoyuki Miyoshi, Hiroshi Suzuki, Tomoyasu Furukawa, So Watanabe et autres

A novel system configuration of 6.5 kV rated innovative silicon (i-Si) power module combining a digital carrier control drive (DCC-drive) is proposed. Controlling the stored carriers' density dynamically using digital signals through gate driver during the conduction of Dual side-gate high-conductivity IG …

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An innovative silicon power device (i-Si) through time and space control of a stored carrier (TASC)

Mutsuhiro Mori, Tomoyuki Miyoshi, Tomoyasu Furukawa, Yujiro Takeuchi et autres

An innovative silicon power device (i-Si) made entirely from silicon, which has an extremely low inverter loss beyond that of a conventional IGBT and a pn diode, is proposed. The i-Si is composed of a dual side-gate high-conductivity IGBT (HiGT) through time …

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A novel hybrid power module with dual side-gate HiGT and SiC-SBD

Yujiro Takeuchi, Tomoyuki Miyoshi, Toshiyuki Furukawa, Masaki Shiraishi et autres

In this paper, a novel hybrid power module using a new combination of dual side-gate HiGTs (high-conductivity IGBT) and SiC-SBDs is proposed. This combination achieves drastic switching loss reductions at a turn-off loss of -43%, a turn-on loss of -71%, and a …

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Analysis, Design, and Performance Evaluations of an Edge-Resonant Switched Capacitor Cell-Assisted Soft-Switching PWM Boost DC–DC Converter and Its Interleaved Topology

Tomokazu Mishima, Yujiro Takeuchi, Mutsuo Nakaoka

This paper presents a soft-switching pulsewidth modulation (PWM) nonisolated boost dc–dc converter embedding an edge-resonant switched capacitor (ER-SWC) cell and its interleaved circuit topology. The conceptual boost dc–dc converter treated herein can achieve high-frequency zero-current soft-switching turn-on and zero-voltage soft-switching turn-off operations …

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New evaluations on soft commutation range of a soft switching PWM boost DC-DC converter with edge-resonant switched capacitor modular

Yujiro Takeuchi, Tomokazu Mishima, Mutsuo Nakaoka

This paper presents a new investigation for a soft commutation performance of a soft switching PWM non-isolated boost DC-DC converter embedding an ER-SWC (Edge Resonant SWitched Capacitor) modular. The conceptual DC-DC converter treated here can achieve a high frequency ZCS turn-on and …

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A novel edge resonant switched capacitor modular-assisted soft switching PWM Boost DC-DC converter for telecommunications energy

Tomokazu Mishima, Yujiro Takeuchi, Mutsuo Nakaoka

This paper presents a new prototype of a soft switching PWM non-isolated boost DC-DC converter embedding an edge-resonant switched capacitor (ER-SWC) modular. The conceptual DC-DC converter treated herein can achieve a high frequency ZCS turn-on and ZVS turn-off operations in active switches …

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A new high step-up voltage ratio soft switching PWM boost DC-DC power converter with edge resonant switched capacitor modular

Tomokazu Mishima, Yujiro Takeuchi, Mutsuo Nakaoka

This paper presents a new soft switching PWM non-isolated boost DC-DC converter embedding an edge resonant switched capacitor (ER-SWC) modular. The soft switching PWM boost DC-DC converter treated here can achieve a high frequency zero current switching (ZCS) turn-on and zero voltage …

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Practical performance evaluations of a soft switching PWM boost DC-DC converter with high efficiency and high scalability edge resonant switched capacitor modular

Tomokazu Mishima, Yujiro Takeuchi, Mutsuo Nakaoka

This paper presents performance evaluations of a novel prototype of a soft switching PWM non-isolated boost DC-DC converter embedding an edge-resonant switched capacitor (ER-SWC) modular. The conceptual DC-DC converter treated here can achieve a high frequency ZCS turn-on and ZVS turn-off operations …

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A new high step-up soft switching PWM boost DC-DC converter with edge-resonant switched capacitor modular

Tomokazu Mishima, Yujiro Takeuchi, Mutsuo Nakaoka

This paper presents a new soft switching PWM non-isolated boost DC-DC converter embedding an edge resonant switched capacitor (ER-SWC) modular. The DC DC converter treated here can achieve a high frequency ZCS turn-on and ZVS turn-off operations in active switches and minimization …

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Investigations on Output/Input Voltage Gain of Soft Switching PWM Boost DC-DC Converter with Switched Capatitor Snubber

Yujiro Takeuchi, Mishima Tomokazu, Mutsuo Nakaoka