sink, source current and drive current - Electronic Circuits Projects Diagrams Free

ervinzhou · 4th October 2008, 01:52 PM

I read some datasheet of synchronous buck controllers. Most of them show the parameter: sink and source current(I know what they are).
Today I read the datasheet of TI TPS51117, it has another parameter: drive current and gives an equation: Ig = Qg x Fsw (Qg is charge needed to charge gate capacitance and Fsw is the switching frequency)
What is the difference between source, sink current and drive current?

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4th October 2008, 01:52 PM	#1
ervinzhou	sink, source current and drive current I read some datasheet of synchronous buck controllers. Most of them show the parameter: sink and source current(I know what they are). Today I read the datasheet of TI TPS51117, it has another parameter: drive current and gives an equation: Ig = Qg x Fsw (Qg is charge needed to charge gate capacitance and Fsw is the switching frequency) What is the difference between source, sink current and drive current?