EEZ DIB DCM224 Dual output auxiliary power module

Current version



Completed, ready for production

PCB manufactured

Yes (r3B2)

PCB assembled

Yes (r3B2)


File repository
(include Eagle, Gerber and BOM files)


TAPR v1.0


C4.1 (Collective Code Construction Contract)

Fig. 1: DCM224 r3B2

Feature list

  • On-board STM32F373C8T6 32-bit ARM Cortex®-M4 MCU, 64 KiB Flash, 32 KiB SRAM, LQFP-48 package
  • Power input: 48 Vdc (e.g. Mean Well LRS-150F-48)
  • Combined max. output power: up to 155 W
  • Separate control of each power outputs
  • Voltage regulation (CV), 1 – 24 V. Voltage set resolution (U_SET): 12-bit, read resolution (U_MON): 15-bit
  • Current regulation (CC), 100 mA to 4.9 A. Current set resolution (I_SET): 12-bit, read resolution (I_MON): 15-bit
  • PWM LED dimming
  • MCU generated two counterphase switching frequencies
  • On-board power pre-regulator and bias power supply
  • Output Enable (OE) and Constant Current mode (CC) LED indications
  • Output LC filter for improved ripple and noise
  • On-board 4 mm power output terminals with standard (19.05 mm) pitch
  • Pass-thru connector for Vout- coupling with other DIB power modules
  • Galvanically isolated SPI bus for communication with MCU board
  • I2C EEPROM for storing board specific configuration and calibration parameters
  • Dimensions: 155 x 95 mm, 4-layer PCB




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