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GW: re-design power supply #5

@cbrake

Description

@cbrake

Problems with the current supply:

  • hard to solder
  • expensive

Requirements:

  • input 6V lead acid battery to 24V industrial (drop requirement that it run from 5V)
  • 5V output @ 460mA max (particle Boron max current)
  • easy to solder
  • reasonable cost

LMR50410 is a new part that looks interesting. It does not support 100% duty cycle, but dropout is low enough that it seems reasonable:

image

At 0.5 draw (would never be continuous), will regulate down to 5.4V, which is much lower than a typical lead acid discharge.

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