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DT3

Discrete Output, 4-Channel, High Current (to 2 A)

The DT3 provides four isolated, high current & voltage (up to 2 A, 65 VDC) discrete output switching channels.

Arranged and power sourced in channel pairs, the individual module channel(s) can control and switch load outputs for either single or dual power supply applications. With a single source power supply (VCC & GND), the channel(s) can be connected to a load and provide either hi-side (current source) or lo-side (current sink) discrete load current switching. With dual power supply sources (VCC & VSS), the channel(s) can be connected to a load to provide push-pull discrete load current switching (dual source current switching from both a positive and negative power supply).

Specifications
  • Voltage Range: 100 VDC/Ch. max. (external supplied VCC source) Note: ±100 VDC is maximum when configured as “bridge type”
  • Resolution: 10-bits/channel for either output range
  • Mode Format: Programmable. Individual, Half or ‘H’ bridge control.
  • Output Current: 3.5 A per channel maximum; 7 A per channel maximum in factory configured ‘H’ bridge control only.
  • Output Impedance: < 0.1Ω
  • System Protection: Output is set to 0 at reset or Power-On.
  • Debounce: Programmable per channel from 0 to 366 ms (LSB= 20.48 μs; 16-bit resolution). (pending characterization)
  • Switching Frequency: Programmable 500 kHz maximum.
  • On-Resistance (RDS): 0.05 MΩ (x2) typical
  • Load: 3.5 A DC per channel maximum. Short circuit protected. When current exceeds 3.85 A for any channel, for > 50 ms, that channel is set “off” and a flag is set. All channels can be reset by either an automatic retry or by a control port command.
  • Voltage Measurement: User can read input voltage of each channel. Voltage: LSB=100 mV; Accuracy: The greater of ±10% of Source or ±3 LSB’s typical over temperature.
  • Current Measurement: User can read current of each channel. Current: LSB=100 mA; Accuracy: The greater of ±10% of Source or ±3 LSB’s typical over temperature.
  • Isolation: Module power returns (GND) and I/O to system ground is > 500 VDC.
  • Update Rate: Each channel command is updated every 20.48 µs.
  • Thermal Protection: Provided
  • Power: 5 VDC/TBD mA typical
  • Weight: 1.5 oz. (42 g)
Block Diagram

(Click diagram to enlarge)

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