Switching Mosfet at 6VDC system

[skmdmasud]

Hi..
I have a DC Fan 6V,2A and 6V Lead Acid Battery. I have a IRFZ44n at hand and want to use it to control the speed of the fan. As far as i know IRFZ44n required at lease 10V at gate am i correct. Any solution?

Regards
Masud.

 

[MikeMl]

DigiKey sells hundreds of more modern NFETs called "logic-level FET" that are fully-turned on for conduction with Vgs less than 5V.

Look at the table in the link above. You can filter it down to a shorter list as you add constraints for Vds, Ron, what type of package, how much you can pay, etc.

 

[skmdmasud]

DigiKey sells hundreds of more modern NFETs called "logic-level FET" that are fully-turned on for conduction with Vgs less than 5V.

Look at the table in the link above. You can filter it down to a shorter list as you add constraints for Vds, Ron, what type of package, how much you can pay, etc.

Any other solution? I was hoping something like "Go ahead it will work"...

 

[MikeMl]

Any other solution? I was hoping something like "Go ahead it will work"...

Sure, raise the supply voltage. Use an SMPS or charge pump to raise the gate voltage, all of which will cost more than just buying a modern NFET.

 

[skmdmasud]

Sure, raise the supply voltage. Use an SMPS or charge pump to raise the gate voltage, all of which will cost more than just buying a modern NFET.

LOL...

I will try out TIP122 cheaper and easy available in my area.

Thanks.

 

[ronv]

It will work.

 

[MikeMl]

It will work.

If he can get the full 6V to the gate, and if the NFet is on a good heatsink, it will work for a hobbyist. I wouldn't go into production with it...

 

[skmdmasud]

It will work.

That sounds great. Its one time thing hobby purpose, as long as it works i am happy. I always like to use things at hand and recycle parts from old electrical gadgets.

 

[skmdmasud]

It works. I tried P55NF06 and IRFZ44n both stays at room temperature. My Vgs was 6.4v. I made a simple 555 pwm generator, which is cool. just need to increase the freq above audible range.

Thanks Ronv and MikeMl.