Current version

r2B2

Status

Work in progress

PCB manufactured

Yes (r2B1)

PCB assembled

Yes (r2B1)

BOM

Yes (TME, Mouser, Digikey, Farnell, RS)

File repository

https://github.com/eez-open/modular-psu/tree/master/dcm220
(include Eagle, Gerber and BOM files)

License

TAPR v1.0

Contributions

C4.1 (Collective Code Construction Contract)

 

Fig. 1: DCM220 r1B2 prototype

 

Output power terminals
coupling capability (require BP3C backplane)

Series

Parallel

Split rails

Common ground

No

No

No

Yes

Feature list

  • Power input: 48 Vdc (e.g. Mean Well LRS-150F-48)
  • Max. output power: 70 W per channel
  • Voltage regulation (CV), 0 – 20 V. Voltage set resolution (U_SET): 12-bit, read resolution (U_MON): 15-bit
  • Current regulation (CC), max. 4 A. Current set resolution (I_SET): 12-bit, Current read resolution (I_MON): 15-bit
  • Output enable (OE) circuit with LED indicator
  • CC mode LED indicator
  • On-board power output terminals (Ø4 mm, 19 mm/0.75” pitch)
  • 10-pin connector for Vout- coupling with other Power boards
  • Galvanically isolated SPI bus for communication with the MCU board
  • I2C EEPROM for storing board specific configuration and calibration parameters
  • On-board STM32F373C8T6 32-bit ARM Cortex®-M4 MCU, 64 KiB Flash, 32 KiB SRAM, LQFP-48 package
  • Upgradeable firmware via DIB v1.0 UART lines
  • SWG/JTAG connector (optional)
  • Two temperature sensors
  • Dimensions: 145 x 95 mm, 2-layer PCB