adafruit on Nostr: TPS65131 Split-Output Booster Supply Generating a negative voltage over -5V is kinda ...

TPS65131 Split-Output Booster Supply

Generating a negative voltage over -5V is kinda annoying: most chargepumps max out at 5V inversion, and ones that can double-then-invert like the MAX232 aren't high current. We bumped into the TPS65131 (https://www.digikey.com/en/products/detail/texas-instruments/TPS65131RGER/1672464) while working on our Floppsy design (https://blog.adafruit.com/2024/10/29/floppsy-rev-b-now-apple-ier-a-floppy-disk-shaped-board-fully-open-hardware-open-source-interface-to-archive-diskettes/) - we need -12V to bias the Apple Disk ][ drive control system.