I am new to the Arduino and would like guidance on controlling (2) PWM fans that draw about 1 amp each at full on condition. They are: SANYO DENKI (SAN ACE 120) model 9GA1212P4G001
I would like to control them with PWM at 25khz pwm. I have read much on that topic and continue to be stumped on how to do it the "right way". It seems it can be done from the basic tutorials, but I continue to be left with these issues:
- The fans never get full on 12 volts with pwm at 100%
- The standard circuits and sketches leave the fans/circuity making noise (not air noise)
A few knowledgeable users lead me to the facts that I will need a "gate drive" circuit to drive a mosfet in order to get full on 12 volts, otherwise it wont be fully turned on. I am willing to over build this circuit if need be, in fact I would rather do it that way to apply it to other things in the future.
Currently it would be helpful if someone could point out which gate drive to use that could work with the arduino at 5v or 3.3 volts and also which mosfet to turn on the 12 volt fans at full on?
Some of my research has lead me to :
Microchip TC4420CAT
Microchip MCP1407-E/AT
STMicroelectronics VNP14NV04-E
TI UC3710T
IXYS IXDN630CI
To feed the mosfet, but which mosfet that works with 12volt fan and can be turned on by the gate drive at 100% without over heating? Someone lead me in the right direction to help me get to the next stage.
I also need to control Peltier chips, with PWM, but at it seems, that is also not that easy to be efficient.
For now, that is just working on relays.
Thanks