Mosfet Driver IC

shinto · ‎2015-02-26

Posted on February 26, 2015 at 14:14

Output sink current and source current in Mosfet driver IC is different. Why ?

(Sink current is greater than source current)

chattu · ‎2015-04-07

Posted on April 08, 2015 at 03:48

Hi Antony,

The output stage will contain a high side PMOS and a low side NMOS. As we already know that PMOS has higher resistance than NMOS, hence the sinking current will be higher than the sourcing current.

This also gives an advantage of preventing from false turn on of MOSFET due to its miller capacitance

This also reduces the dynamic switching losses when use MOSFETs in Half/Full bridge configuration

Hope this helps

Thanks & Regards

Suresh