인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
This study quantitatively investigates the trade-off between power density and semiconductor loss as a function of switching frequency in a GaN-based four-switch non-inverting buck–boost converter for wearable-robot power applications and proposes a recommended switching frequency range. Well suited to mobile power systems with wide input-voltage variation, the non-inverting buck–boost converter supports non-inverted step-up and step-down operation, while the four-switch topology enables a single-inductor implementation that reduces passive components and footprint. When the input and output voltages are comparable, all four switches may commutate within one switching period, increasing loss; under high-frequency hard switching, switching loss can dominate and impose thermal and efficiency penalties. The converter is evaluated over an input-voltage range of 30 to 54.6 V with a 48 V/400 W output while sweeping switching frequency from 100 kHz to 1 MHz. Conduction and switching losses are evaluated separately to capture loss trends versus switching frequency and input voltage. To represent inductor burden consistently, an inductor-current-based energy proxy is defined over a steady-state time window. A Pareto plot using the energy proxy and total semiconductor loss identifies operating points that balance compactness and loss, providing a practical guideline for switching frequency selection.
본문·목차
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
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오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
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