• 제목/요약/키워드: LLC Resonant Converter

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전기자동차 충전기용 10kW 하이브리드 컨버터 (A 10kW Hybrid Converter for the Electric Vehicle Charge Application)

  • 트란다이두옹;유선호;부하이남;최우진
    • 전력전자학회:학술대회논문집
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    • 전력전자학회 2015년도 전력전자학술대회 논문집
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    • pp.319-320
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    • 2015

  • A hybrid converter for the on-board charger consisting of a soft switching full bridge (SSFB) and a half bridge (HB) LLC resonant converter is proposed. The proposed topology adopts an additional switch and a diode at the secondary side of SSFB converter to guarantee the wide ZVS range of primary side switches and to eliminate the circulating current. The output voltage is regulated by controlling the duty cycle of secondary side switch. The effectiveness of the proposed converter was experimentally verified using a 10-kW prototype circuit. The experimental results show 96.8% peak efficiency.

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A High Efficiency Controller IC for LLC Resonant Converter in 0.35 μm BCD

  • Hong, Seong-Wha;Kim, Hong-Jin;Park, Hyung-Gu;Park, Joon-Sung;Pu, Young-Gun;Lee, Kang-Yoon
    • Journal of Power Electronics
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    • 제11권3호
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    • pp.271-278
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    • 2011

  • This paper presents a LLC resonant controller IC for secondary side control without external active devices to achieve low profile and low cost LED back light units. A gate driving transformer is adopted to isolate the primary side and the secondary side instead of an opto-coupler. A new integrated dimming circuitry is proposed to improve the dynamic current control characteristic and the current density of a LED for the brightness modulation of a large screen LCD. A dual-slope clock generator is proposed to overcome the frequency error due to the under shoot in conventional approaches. This chip is fabricated using 0.35 ${\mu}m$ BCD technology and the die size is $2{\times}2\;mm^2$. The frequency range of the clock generator is from 50 kHz to 500 kHz and the range of the dead time is from 50 ns to 2.2 ${\mu}s$. The efficiency of the LED driving circuit is 97 % and the current consumption is 40 mA for a 100 kHz operation frequency from a 15 V supply voltage.

  • https://doi.org/10.6113/JPE.2011.11.3.271 인용 PDF KSCI