LMR50410: Create a Negative Rail

Brian Wang0928

Part Number: LMR50410

We'd like to consider using LMR50410 to implement the inverting buck-boost topology for 5Vin to -15V/60mA. Is it possibly to do? Any design constrain? Very thanks.

Regards

Brian W

over 4 years ago

+1 J Arrigo over 4 years ago

TI__Mastermind 28020 points

Hi Brian,

The LMR50410 can be configured as a inverting buck-boost. It looks as though this device can meet your recommendations. The following app-note goes over the design considerations and calculations. Please review the app-note and let me know if you have questions.

https://www.ti.com/lit/an/snva856a/snva856a.pdf?ts=1620013407742&ref_url=https%253A%252F%252Fwww.google.com%252F

Thanks, Jason