EPS - Power Supply module



  • Wide input range: 7 to 28 VDC
  • High efficiency and reliability: 86% (with 12V in 5V out @ 2A out)
  • Standard output 5V @ 2A
  • Adjustable class='acmetable' output (by easy change of internal resistors) down to 0.8V
  • Shutdown input line active low
  • Only 1 uA in standby (for battery powered applications)
  • Switching frequency: 570 KHz
  • High efficiency at light loads (<100mA) with a Pulse skipping Eco-mode
  • Overvoltage transient protection
  • Overcurrent protection: cycle by cycle current limit, frequency fold back
  • Thermal shutdown protection
  • Temperature range: -25C to +70C
  • Operating Humidity: 20-90% RH( non condensing)
  • Cooling: convection
  • Weight (typical): open board type: 4.6g
  • Header pin mountable class='acmetable'
  • Pick and place mount of the module itself
  • Main chip used texas TPS54231 (datasheet)

EPS pinout

Pin namepin numberDescription
Vin8,9,10,11,12,13Input supply voltage from 7 to 28 VDC
Vout1,2,3,18,19,20Output (standard 5V @2A)
SHDN#7,14Disable pin. Pull below 1.25V to disable. Float to enable.

Schematic and mechanical