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 up to max. 200 V
  • Continuous bi-directional output voltage
  • 10 Arms  and 50 Apeak output current at up to 200V
  • Algorithm for determining the injector closing time using the delta voltage method
  • Voltage measurement at output terminals or through sense terminals at device

The Universal Solenoid Driver, USD for short, is a 2-channel programmable power amplifier with FPGA controller-supported digital current control especially for controlling automotive inductors (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  

  • Up to 63 cards on one RS485 communication network and up to 255 communication networks.
  • 2 channels, each with up to 31 current phase sections per channel
  • Paging function per channel, for trouble-free switching between two control profiles.
  • Three different voltages from external sources to drive the load:
    Vbatt / Vboost1 / Vboost2
  • Fully digital current control
  • Various triggering possibilities as a step-on condition and for switching the pulse generation on and off:
    Trigger internal, external pos. / neg. edge with and without delay, peak current, time
  • Demagnetisation voltage: Freerun, -Vbatt / -Vboost1 / -Vboost2

 

Technical data  

  • Control supply: 20.0V – 28.0V DC, 350mA @ 24V DC
  • Load voltages external: V batt / V boost1 / V boost2  (Abs. max.  0 – 100Vdc)
  • Buffer capacity load voltages: per load voltage 2×820µF / 100V
  • Continuous current (max.): 20A RMS @  20°C
  • Current measurement:
    • Resolution: 16 bit, sampling: 500 kS/s
    • Range: type up to 27A (max. 30A)
    • Basic sensor accuracy: +/- 0.6% @25°C
    • Max. current increase: +30A/µs
  • Voltage measurement: ± 110 V, 16 bit / 500 kS/s, ±0.2% voltage divider tolerance
  • Monitoring:
    • Resolution: 12 bit
    • Vbatt/Vboost: 0–100 V, ±500 mV
    • Heatsink: ±1 °C
  • Environs: +10°C..+40° rel. humidity <95% non-condensing (IEC 60721-3-1)
  • Degree of soiling: 2 (PD2, IEC 61010)
  • Type: IEC 60 297-3-100
  • Dimensions: 19″, 6 RU / 10 HP (261.8 × 50.5 mm), PCB 233 × 160 mm
  • Weight:  870g

All data refer to a current hardware version at the time of creation (HW V1.5, FW V5.10 rev03).