12V, 5V, 3A dual power supply based on the LM2596

[electrophile]

Hello, I'm trying to design a 12V, 5V, 3A dual power supply based on the LM2596 voltage regulator. Now I need about 2A on both the 12V and the 5V rails. This is supposed to power a SATA HDD and a raspberry pi board. I've attached a schematic here and I was hoping you folks could tell me if it would work? Also can I use the 5V rail to power a raspberry pi along with the HDD in parallel? Feel free to dismantle this circuit completely if necessary. The goal is to provide enough power for all devices the right way!

Any help would be really appreciated. Thanks.

 

[Hero999]

It should work.

Be careful with the PCB layout which is important for stability and efficiency. The data sheet contains an example PCB so stick to it.

 

[electrophile]

Thanks Hero999. This was helpful!

 

[Jibby]

Simply use any PC SMPS. One will get all these voltages.

 

[Hero999]

Simply use any PC SMPS. One will get all these voltages.

No.

A PC SMPS is designed for 100V to 250VAC input. He needs to run it off 40VDC.