LCD TV HV-BLU 시스템에 대한 Ultra-FRFET의 유효성에 관한 연구

다국어 초록 (Multilingual Abstract)

This paper introduces a newly improved Ultra-FRFET that has much better reverse recovery characteristic than that of the typical MOSFET and presents its effectiveness in the HV-BLU system of LCD TVs. The reverse recovery time, Trr of Ultra-FRFET is shorter than 40nsec and the peak value of reverse current, irr is also much smaller compared to the typical MOSFET’s, which are sufficient to prevent the MOSFET’s failures without additional FRDs and diodes in HV-BLU system with a half-bridge resonant inverter topology worked by PWM method. In order to verify the validity, the loss analysis and the implementation results in cases when both the conventional solution using typical MOSFETs with additional FRDs and a new solution using Ultra-FRFETs are applied to a HV-BLU of 40” LCD TV are presented. As a result, the effectiveness of Ultra-FRFET was verified and the results are presented in this paper.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. CCFL 구동용 공진형 인버터
• 3. MOSFET 역회복 특성 개선
• 4. 손실해석
• 5. 실험결과
• 6. 결론
• 참고문헌
• 저자소개

참고문헌 (Reference)

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4 Chang-Gyum Kim, "Modeling of CCFL using lamp delay and stability analysis of backlight inverter for large size LCD TV" 1751-1757, 2005

5 Fiel, A., "MOSFET failure modes in the zero-voltage-switched full-bridge switching mode power supply applications" 1247-1252, 2001

6 Aigner, H., "Improving the full-bridge phase-shift ZVT converter for failure-free operation under extreme conditions in welding and similar applications" 1341-1348, 1998

7 Cester, A., "Collapse of MOSFET drain current after soft breakdown" 4 : 63-72, 2004

8 Jung, Jeesung, "Analysis of the MOSFET Failure In a Junction-Isolated Power Integrated Circuit" 249-252, 2007