The PPM-PS397-POE is an isolated 25W, PC/104-Plus form factor, 802.3af/at compliant, PoE PD power supply. The Class 4 signature supports up to twice the power of 802.3af compliant PD devices. Designed to power a single board computer from DC power extracted from a CAT5 cable sourced by an 802.3af/at compliant PSE device configured as either an endpoint or midspan device.


  • PoE input voltage: 42-57 VDC
  • Dual Polarity Power Sourcing Equipment (PSE) supported
  • 802.3af/at compliant with Class 4 signature
  • Auxiliary 16-60 VDC input supported
  • Isolated voltage outputs which provide up to 25W combined power:
    • +5 VDC, +12 VDC, and -12 VDC
  • Line and load regulation: ± 100 mV for all outputs
  • No minimum load required for regulation
  • Outputs with short circuit, overload and overvoltage protection
  • -40 to +85°C operation