Hi,
We have required -48V to +5V/1A DC Dc converter, PMP20371(LM5122) is a bigger size. we want a smaller package. please suggest a solution.
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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 Dehuan,
I have not seen an update for the last 5 days, so I assume the questions are answered.
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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.
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 Anoop,
It's been a few days since I have heard from you so I’m assuming your question has been answered.
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Best regards,
Stefan