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Characteristics of enhancement-mode MOSFETs
mous market for SMPS, which in turn rely heavily on magnetics and power MOSFET
technology. Now, nearly 25 years after their introduction, MOS devices are made around
the world by many leading companies and consist of both low-power and high-power
types. The investment in semiconductor processing equipment, however, is a major con-
sideration when building power MOSFETs. Two basic types have evolved: the more
common
planar
type and the newer, more advanced
trench
type, which requires even
greater investment. MOSFET manufacturers include International-Rectifier, Vishay-Sili-
conix, Fairchild Semiconductor ...