Overview

IMPORTANT: A crowdfunded version of the AUX-PS (r3B3) can be found here.

AUX Power supply board for powering MCU board and backplane. It includes fan controller and AC power control with softstart (inrush current limiter) for power modules like DCP405 and DCM224.

Feature list

• On-board IEC C14 AC inlet with dual 20 x 5 mm fuses
• On-board AC power switch
• AC input protection (SAR, MOV)
• AC input filter for EMI compliance
• 3 x AC power outputs
• Soft-start/standby relay control
• +5 V, 10 W (optional 20 W)
• +12 V, 10 W
• I2C DC fan controller with temperature sensor and speed control
• Two 3-wire or 4-wire 12V DC fans (standard PC fan pinout)
• Standby LED indictor
• On-board PE 4 mm terminal
• AC mains frequency detection (optional)
• Dimensions: 230.5 x 60 mm, 2-layer PCB
• CE certified design

KiCad project (v7 or newer)

• AUX-PS r3B7

All symbols, footprints and 3D models used in the project can be found in the EEZ-DIB Library plugin for KiCad.

Bill of materials

• Download as raw file Interactive BOM (ibom.html) and open it locally in your browser.