Hi guys,
So I have a 12V power supply and 1A output current. I do have 3 valve solenoids that are operate at 24V. I want to to build my own boost converter to boost from 12V to 24V and 2A output current. So what is the best switching frequency and mosfet switch for this application?
Thank you.
You want to go from 12V@1 amp and end up with 24V@2 amps, how does that add up? 
DC to DC converters are a very advanced topic.
Suggest you either start with 24V and go down to 12V if needed.
Or
Buy a ready made converter.
Why not get a 24vdc power supply and switch the 24vdc? Last L looked 24vdc power supplies were not very expensive and the design is already done. Should also be some 12vdc to 24vdc converters out there already.
OP also has a 12volt/2Amp supply.
https://forum.arduino.cc/index.php?topic=546577.0
If you connect a 12volt/2Amp and a 12volt/1Amp supply in series,
then you can have both voltages at the same time (12V/1A + 24V/1A).
Leo..
Taksan:
Hi guys,So I have a 12V power supply and 1A output current. I do have 3 valve solenoids that are operate at 24V. I want to to build my own boost converter to boost from 12V to 24V and 2A output current. So what is the best switching frequency and mosfet switch for this application?
Thank you.
LarryD is right. There's a power (energy) conservation law. The 12V, 1A power supply you have might happily supply 12 watt of power. If you want to boost the voltage to 24V, then there's going to be a power limitation that is going to depend on your original power source (plus some power losses due to conversion maybe).
The 24V 2A target (assuming max output) .... with 48 watt max can't be achieved, because the bottleneck will be with your 12 watt max original power source.
So, probably best to just get a 24V, 2A source (buy one) to use to begin with. Or even better..... 24V, 5A source ..... to give enough head-room.
I want to to build my own boost converter to boost from 12V to 24V and 2A output current
Just to underline what others have said this is impossible, it would require you to break the laws of physics.
Even if you had a 12 V power supply capable of just over four amps, then it would be challenging to design and build a step up converter capable of 24V @ 2A, it is not something you throw together and it works. Search on a distributor’s web site like Mouser and see how much they cost.