April 2011
Intermediate to advanced
400 pages
16h 50m
English
Content preview from Power Sources and Supplies: World Class Designs
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Chapter 8
The cr
ossover time , being the time during which both the current and voltage are
transiting, is t 2 t 3. As indicated, to know the driver dissipation, we need to consider
the entire duration t 1 t 2 t 3 t 4. Note that, by definition, at the end of t 4, the gate
voltage is at 90% of its asymptotic level ( Vdrive ). So we can safely assume that, for all
practical purposes, the driver does very little after this point. Therefore, at the end of t 4, the
transition is considered complete—from the viewpoint of the switch, and also the driver.
8.8 The Turn-off Transition
In a similar manner ...
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