PS48401 - PXI Programmable Power Supply


  • 0-48VDC / 2A / 40W max.
  • Isolated output
  • No external power source required
  • High accuracy / low noise output voltage
  • Programmable Current Limit
  • 16 Bit Read Back of Output Voltage / Current
  • 2-slot width, PXI / cPCI Instrument
  • Programmable sequencer
  • .NET, LabVIEW and LabWindows/CVI (VXIplug&play compatible) drivers included
  • Soft Front Panel included

The PS48401 is a Programmable DC Power supply in a 2-slot PXI / cPCI form factor. Featuring a fully isolated output capable of providing 0-48VDC / 2A / 40W. It offers a programmable current limit and the ability to measure the output voltage and current under software or trigger control.


Safe operating area

Special functions:

  • Measure output voltage or current, software controlled.
  • Measure output voltage or current, external trigger controlled.
  • Update output voltage and current limit, external trigger controlled.
  • Sequence above functions and store measured values into on-board memory

Output noise at 17V / 2A (BW DC-1MHz)


Vertical: 2mV/div, Horizontal: 2ms/div


Output Voltage 0 to 48V
Voltage setting resolution 0.74mV
Voltage setting accuracy ±0.2% of programmed value ±25mV
Load regulation 0.1% of programmed value + 5mV (10 to 90% load change)
Output current 2A max. above 20V lineary de-rating to 0.8A (40W max.)
Current limit resolution 35µA
Current limit accuracy 0.5% of programmed value ±10mA
Sense line regulation area 0.5V (sum of both sense lines)
Output ripple (typical) 1.5mVrms, 6mVpp (Full load, BW = DC - 1MHz)
Voltage Read back resolution 0.74mV
Voltage Read back accuracy ±0.1%reading ±10mV
Current read back resolution 35µA
Current read back accuracy ±0.2%reading ±5mA
Memory Depth 16k
Rise time 1Volt/ms (typical at full load)
Trigger input Floating opto-coupler input (220 Ohm in series with a diode)
Trigger level 4.0V - 12V (approx. 10mA - 50mA)
Minimum trigger pulse low / high time 20µs
Maximum sequencing frequency 10kHz
Sequence memory depth 16384 readings
Voltage to chassis (any pin) 60VDC (safety limit, design breakdown voltage > 250VDC)
Insulation resistance > 100MOhm
Backplane 5V under voltage lockout 4.65V
Backplane 12V under volt. lockout 11.3V
Operating temperature 0°C to 50°C