新一代稳压器的最小寄生电感多芯片模块

Proceedings. ISPSD '05. The 17th International Symposium on Power Semiconductor Devices and ICs, 2005. Pub Date : 2005-05-23 DOI:10.1109/ISPSD.2005.1488028

Y. Kawaguchi, T. Kawano, H. Takei, S. Ono, A. Nakagawa

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引用次数: 32

摘要

本文利用Spice模拟器分析了寄生电感对DC-DC变换器转换效率的影响。研究发现，低侧MOSFET的自导通是由大体二极管反向恢复电流触发的。为了抑制LS mosfet的自导通和减小寄生电感，开发了一种新的多芯片模块(MCM)。MCM还具有独特的上表面冷却功能。mcm通过减小体二极管反向恢复的mosfet成功地提高了转换效率。通过减小栅极电阻和优化死区时间，可以进一步提高转换效率

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Multi Chip Module with Minimum Parasitic Inductance for New Generation Voltage Regulator

This paper analyzes the effects of parasitic inductances over the conversion efficiency of DC-DC converters by using Spice simulator. It was found that the self-turn-on of the low side MOSFET is triggered by large body diode reverse recovery current. A new multi chip module (MCM) has been developed in order to suppress the self-turn-on of the LS MOSFETs and to reduce the parasitic inductances. The MCM also has unique upper surface cooling feature. The MCMs successfully improve the conversion efficiency by using the MOSFETs with reduced body diode reverse recovery. Conversion efficiency can be further improved by reducing the gate resistance and optimizing the dead time

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Proceedings. ISPSD '05. The 17th International Symposium on Power Semiconductor Devices and ICs, 2005.

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