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22nd December 2006, 11:17 PM
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diyAudio Member
Join Date: Sep 2005
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Current needed for switching a power FET switch
Basic question here:
If a MOSFET has a gate charge of 50nC, and its gate driver can supply a maximum of 1A of current, this means that the MOSFET can switch in 50 nanoseconds, right? ==> Amps = coulombs/second (Gate charge) / (max current driver can supply) = time to switch FET Am I doing the math right? It's for a basic MOSFET power switch, and I'm trying to determine the proper current rating for the gate driver IC needed. |
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