Stardom
Newbie level 6
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I'm trying to determine what the gate current will be when i turn on a mosfet. The only current way i know to do this is to use the gate charge that the datasheet gives, say 1000pf. Since i know I = dQ/dT = gate charge/start-time i could calculate average current in that time if i knew how fast the start up time was. But i don't know this time! I have also heard that a gate resistance increases the start up time but nowhere have i seen where they tell how to calculate how much it slows the start up time.
In addition, since i'm using a mosfet driver to turn the mosfet on/off at a certain frequency, i imagine the fact that the current isn't constant also plays a part into determining how much pulsed current the mosfet driver can handle. Any ideas? Pointers to tutorials which talk about it?
Thanks!![Big grin :D :D](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
In addition, since i'm using a mosfet driver to turn the mosfet on/off at a certain frequency, i imagine the fact that the current isn't constant also plays a part into determining how much pulsed current the mosfet driver can handle. Any ideas? Pointers to tutorials which talk about it?
Thanks!