Design an high power psu with adjustable 12V 100A cc output

[albertobeghetto]

Good morning,

i'm searching some information or reference design to develop an high power PSU, somwthing like laboratory psu but with high power output.

This device will have these specifications:

- input 220v ac

- output cc

- adjustable output from aprox 0 to 12V

- output current limit up to 100A

- highest cost efficency possibile

- highest efficency possible

After some days of search in net i see KV46 Digital LLC Converter Reference Design from nxp site. But that board provide a fixed output.

My question are:

- what kind of psu is best ? can LLC be the right choose?

- there is an existent reference design to start from? maybe somwthing with lower output power re-adaptable to my specs

Alberto

EDIT:

for user interface i want to use a graphic touch display so i have to foresee an interface to another board

[JozefKozon]

Hi Albertogeghetto,

please see comparison of isolated SMPS topologies in a file attached. For your design a best option would be a full bridge LLC SMPS. But we don't have a full bridge LLC controller. The half bridge LLC could also be an option. Please find attached a reference design manual to the KV46 board.

With Best Regards,

Jozef

[albertobeghetto]

Hi Jozef,

thanks for reply.

It seems that full bridge LLC is my solution, especially in anticipation of next project, same device with 500A output.

Is there a way to design a full bridge LLC with nxp product. There is no other nxp product for this application?

I worked a lot with nxp for many of my project, so i wold like to stay here. Changing mcu/mpu family is not a problem.

Thanks in advice.

Alberto

[JozefKozon · Accepted solution]

Hi Alberto,

I understand. Unfortunately we do not have full bridge controllers in our portfolio. Only option could be an MCU, but I do not support MCUs. Could you please place a new question in the community or could you please create a case and an NXP support representative for the MCUs will take care of it. Please see this link: https://support.nxp.com/s/

With Best Regards,

Jozef

[albertobeghetto]

Hi Jozef,

i create a case in NXP support.

Thanks for all

Alberto