-48V to +5V

Hi ，

You can check LM5158， it is include a switch MOS . it is can reduce the totally package.

Hi Dehuan,

Please review the attached schematic.

1)input voltage -48V

2)output voltage +5V

Hi 

Thank you for your choice our device LM5158.

My partner Stefan will check the design for you.

BR Dehuan

E2E_1049150_LM5158_BST.xlsxHi,

when checking the design with the actual parameter the inductor might be to small to ensure proper loop compensation.

This would require at least an value of 3uH.

I have also attached the Quickstart Calc for references.

Note: i transposed the voltage level to have then all positive, the load current is dynamically adjusted and scaled to the output voltage of 5V then.

Best regards,

 Stefan

Hi Stefan,

Sorry for the delayed response.Thanks for your support.

I have simulated in TI space, But I didn't get output, I am attaching the archive, please help. 

2047.archive.zip

Hi Anoop.

let me look into that but might need one or two days.

Best regards,

 Stefan

Hi Anoop,

Currently, the PSpice model has PGND and AGND grounded internally. Therefore, the inverted input does not work.

Thanks,

Yinsong

Hi Yinsong,

Thanks for your reply.OK no problem