Suitable mosfet driver

Using Arduino Project Guidance
#1

Can anyone recommend a suitable mosfet driver ic, to drive a n channel mosfet in the high side of circuit from arduino?

Thanks

#2

You have to tell more.
Is there a power supply available at the high side ? for example 12V power supply for the gate ?
What is the schematic ? is it for high voltages, or normal voltages like battery voltages for a motor ?

#3

Peter,

It will be for automotive use so 1 12v supply available, to drive lights and motors etc. I've seen how the circuit can be done using a bootstrap system and optoisolators, but rather than using all these components I'm looking for a ic to do the lot. With my poor knowledge doing a search opens up a minefield of information.

James

#4

Instead of a common normal reliable P-channel mosfet, you want some kind of special chip with charge pump and bootstrap circuit for a N-channel mosfet :smiley_cat:

Select a few of these to see what they can do : https://www.fairchildsemi.com/products/power-management/mosfet-igbt-gate-drivers/high-side-drivers/ Do they create the high voltage for the gate ? I don't know (I think they do not).

Or these: http://www.irf.com/product/_/N~1nje1h

#5

If you want to remove the complexity of using a bootstrap circuit and opto-isolators, then you should be using a P-Channel MOSFET to switch the high side of a load.

A suitable MOSFET driver is the TC4420 from Microchip, this can even be used on 3.3V logic.

#6

Hi If you google Highsdie Automotive Mosfets

You will find purpose built mosfets designed for high surge current loads like Halogen Lamps and motors.

Tom... :)

#7