High frequency pulse transformer for an IGBT gate drive
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United States of America Patent
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Apr 22, 2003
Grant Date -
N/A
app pub date -
Jan 31, 2000
filing date -
Jun 7, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A pulse transformer for use in a high frequency motor controller to isolate the electronic control stages from the power stages in a motor controller. The primary and secondary windings are wound on a common ferrite core and spaced apart from one another. The wire size used for the windings is relatively small (gauge 37 or less). Each of the windings has between 10 and 13 turns. The interwinding capacitance must be below 5 picofarads, preferably below 1 picofarad, and most preferably below 0.2 picofarads.
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