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SparkFun Buck Regulator and Baby Buck Regulator

SparkFun Buck Regulator Breakout - 3.3V (AP63203) BabyBuck Regulator Breakout - 3.3V (AP63203)

Who doesn't occasionally need power regulation? We certainly do, so we've designed the SparkFun Buck Regulator and Baby Buck Regulator Breakouts to help us with just such a task. Featuring the AP63203 from Diodes Inc, these breakout boards take advantage of a 2A synchronous buck converter that has a wide input voltage range of 3.8V to 32V and fully integrated 125mΩ high-side power MOSFET/68mΩ lowside power MOSFET to provide high-efficiency step-down DC/DC conversion. All of this snuggled up in a low-profile, TSOT26 package that's integrated into either a 1in. by 1in. or 0.4x0.5" board.

Input power for the Buck Regulator can be supplied in a number of ways. There are screw terminals on the right side of the board, solder pads for a barrel jack, which can be mounted on the top or bottom side of the board, and the plated through holes on the left side of the board can all be used as input. Output can be obtained via the screw terminals or the plated through holes. Additionally, to dissipate some of the excess heat, we've added a copper pad for a heat sink on the back of the board.

Unlike it's sibling, the BabyBuck sacrifices power option flexibility for space. Don't worry, though, because you can still use the plated through holes for input and output power. With some simple right-angle headers, you'll be up and running in no time.

Frequency Spread Spectrum (FSS) reduces EMI and a proprietary gate driver scheme resists switching node ringing without sacrificing MOSFET turn-on and turn-off times, which further erases high-frequency radiated EMI noise.

Repository Contents

  • /SparkFun Buck Regulator - AP63203
    • /Hardware - Eagle design files (.brd, .sch)
      • /Production - Production panel files (.brd)
  • /SparkFun BabyBuck Regulator - AP63203
    • /Hardware - Eagle design files (.brd, .sch)
      • /Production - Production panel files (.brd)

Documentation

License Information

This product is open source!

Please review the LICENSE.md file for license information.

If you have any questions or concerns on licensing, please contact technical support on our SparkFun forums.

Distributed as-is; no warranty is given.

  • Your friends at SparkFun.

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