Description

BrødBoost-C2 is the successor to BrødBoost-C, rebuilt from the inside out based on community feedback. The TPS63001 switching regulator was replaced with an AP2114H-3.3 LDO for lower noise and a simpler BOM. Protection was overhauled — USB ESD protection, an ideal diode for reverse polarity and overvoltage, and a load switch with soft startup that allows the physical power switch to control the load switch rather than carrying the full 1A directly. Decoupling was reworked with proper capacitor sizing on the USB-C side and dedicated caps near the output pins. The result is cleaner power, better protection, and a lower cost to manufacture.

Details

BrodBoost-C2

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BrødBoost-C2 is a USB-C breadboard power supply that delivers clean 5V and 3.3V power directly to your breadboard. It features short-circuit fuse protection, USB ESD protection, an ideal diode for reverse polarity safety, a load switch with soft startup, and ferrite bead filtering for low-noise operation. An on/off switch and power LED keep you in control, while USB data passthrough keeps your lines accessible.

A USB-C receptacle accepts a standard USB-C cable. The CC1 and CC2 lines are pulled to ground through 5.1 kΩ resistors to negotiate 5 V from the host. Power flows through a ferrite bead for noise suppression, a 1 A polyfuse for short-circuit protection, and decoupling capacitors. An ideal diode provides reverse polarity and overvoltage protection. A load switch with controlled soft startup prevents inrush current. The power switch and red power LED sit in series on the main rail. USB ESD protection is included on the data and power lines. Step-down conversion from 5 V to 3.3 V is handled by the AP2114H-3.3TRG1 LDO regulator. Both voltage outputs are routed to 1×3 2.54 mm headers for rail selection. A separate header provides access to 5 V, 3.3 V, ground, and USB data lines.

BrodBoost-C2 is a two-layer PCB measuring 12 mm by 54.0 mm, designed to maximize trace width and optimize the switching regulator's ground return path. This layout comfortably supports the nominal device current of approximately 1 A.