Electronic Development Universal Solenoid Driver (USD)

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Universal Solenoid Driver

Available from Q1/2026: Next Generation Solenoid Driver by Sonplas
The upcoming version will offer, among other features:

  • 1 channel for full performance
  • 150 V nominal operation voltage
  • Continuous bi-directional output voltage
  • 10 Arms  and 50 Apeak output current
  • Algorithm for determining the injector closing time using the delta voltage method
  • Voltage measurement at output terminals or through sense terminals directly at device

The Universal Solenoid Driver, USD for short, is a 1-channel programmable power amplifier with FPGA controller-supported digital current control especially for controlling automotive inductances (not piezo).

 

 

 

Intended purpose:

  • Time-synchronous control of injectors, valves of high-pressure pumps, hydraulic valves, pressure and volume control valves.
    Examples: Flow measurement of injectors (also shot-to-shot) or spray test.
  • Angle synchronised control is also possible with additional hardware that triggers the Universal Solenoid Driver.
    Example: Petrol / diesel high pressure pump control

Highlights  

  • Ethernet port
  • 31 current phase sections
  • Paging function (switching between two profiles without overlap)
  • Three external control voltages for the DUT
  • Fully digital current control
  • Various triggering possibilities: internal/external pos./neg. edge,  with/without delay, peak current
  • Demagnetization via freewheeling or via one of the three external control voltages

 

Technical data  

  • Control supply: 20 – 28 V DC, 350mA (tbd) @ 24 V
  • Load voltages external: 0 to nominal 150 V (max. 200 V DC)
  • Buffering per voltage: 1000 µF / 200 V
  • Continuous current (max.): 20A RMS @  20°C
  • Current measurement:
    • Resolution: 16 bit, sampling: 2 MS/s
    • Range: type up to 45 A (max. 50A)
    • Basic accuracy of current measurement before calibration: ± 1,0 % Shunt, ± 0,15 % Current-Sense Amplifier
    • Max. current increase: ± (tbd) A/µs
  • Voltage measurement: ± 170 V, 18 bit / 2 MS/s, ± 0.2 % voltage divider tolerance
  • Monitoring:
    • Resolution: 16 bit
    • 3x 0 – 175 V, accuracy better than ± 500 mV
    • Heatsink: -10 °C – 125 °C, accuracy better than ± 2,5 °C
  • Environs: +10 °C – +40 °C,  <95 %, non-condensing
  • Degree of soiling: 2 (IEC 61010)
  • Dimensions: 19″, 6 HU / 12 HP (261.8 × 60,96 mm), PCB 233 × 220 mm
  • Weight:  tbd

All data refer to a current hardware version at the time of creation (HW V0.0, FW V0.0.0 rev0).