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Never heard of this before. Why do you want to drive a MOSFET with a currentHello,
Whats the difference if we have current sources that drives the gates
of mosfet versus voltage sources ??
Thanks in advance,
Su
gates?"peter" <cow.pupi@gmail.com> wrote in message
news:b95baff1-bbb4-42af-abd6-d191ab3ce408@t11g2000prh.googlegroups.com...
Hello,
Whats the difference if we have current sources that drives the gates
of mosfet versus voltage sources ??
Thanks in advance,
Su
Never heard of this before. Why do you want to drive a MOSFET with a current
source?
A MOSFET requires a voltage across its gate and source to switch it on
(VGS). Looking into the gate, it looks like a capacitance. There will be an
inrush current to charge the capacitance, but this will decay to zero once
the capacitor is charged.
If you switch on a FET with a current source, the voltage across the current
source will rise up to try to maintain the current into the gate and
probably over-voltage the Vgs spec.
Use a voltage source instead. Much easier
Could it be the poster is referring to bipolar technology to drive the