Control 2 wire fan speed through a PWM 4 wire controller board

[YouCanDoIt]

Hello to all,
I'm opening this topic because I want to buy this PWM Fan Temperature Control Governor (link):


Basically the governor automatically regulate a connected fan speed based on the detected ambient temperature.
The devices I want to connect:

• Seaflow DC12V inline blower (model SFIB1-270-02)
  Specs (from multiple sources):
    Max Draw (A): 6.0A (source)
    Working current: 3.77A (source)
    Max amperage capacity: 2.5A (source)
  
• Mini DC12V water pump
  Specs:
    Power consumption: 4.8W.
    Rated voltage: 12V DC.
    Max rated current: 400mA (source):

Main problem is that the above fan is a 2 wire fan, so it will not work as is.
I'm wondering if the controller will be able to control fan speed if I connect the fan through a MOSFET IRF520. From what I saw it seems to be possible, but samples show arduino and I'm not sure if can work at all with the board I want to buy:



There are other adapters in AE which seems to do similar jobs, but I have no idea on what could be the right one for my specific case. I suppose that IRF520 or similar modules convert PWN signals into DC, so I assume that it should work even with the water pump, right?

This is a new topic opened as consequence of this one. Basically it was the same kind of controller, but designed for 2 wire fans. Main problem was maximum current supported by the fan interface (3A while the fan I need to use, as you can see, is 6A). No one has been able to help, so I'm opening this topic to see if I can achieve the result I want with a different approach, but the problem I have now is the inverse: the controller seems to be able to provide the power required by the fan (maximum drive current is 12A although I'm not sure is enough), but I have no idea if there are ways to make it work with 2 wire fan.

Any help would be very appreciated.
Thanks

[Kurets]

The linked IRF520 module will not do what you want. It is just a very bad breakout board for the FET without gate driving, relying fully on the MCU/whatever to drive the gate. Switching will be very slow and burn the FET.

That said, it is also not a good idea to PWM the supply to a 2-wire brushless fan as it overstresses the input filter.

The better solution here is to use the PWM to feed a gate driver and "inverse buck" converter (low side switch) to generate a sufficiently stable DC voltage. Although designing a 6A output buck converter is not a trivial task in itself.

[YouCanDoIt]

Many thanks Kurets! It would have been a very big mistake the IRF520 module and what I want to do seems much harder than I thought!

The better solution here is to use the PWM to feed a gate driver and "inverse buck" converter (low side switch) to generate a sufficiently stable DC voltage. Although designing a 6A output buck converter is not a trivial task in itself.

I think I have understood very little of what you said. Can you link me a ready made adapter suitable for this job and write a few words on how is supposed to be connected?

Many thanks, I really appreciate!