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Texas Instruments ISOM8110 Single-Channel Opto-Emulator

Texas Instruments ISOM8110 Single-Channel Opto-Emulator is pin-compatible and drop-in-replacement for many traditional optocouplers, providing enhancements to existing systems without requiring a PCB redesign. This module features a diode-emulator input and transistor output, supporting a 3.75kVRMS isolation rating. The single-channel opto-emulator offers reliability and performance advantages compared to optocouplers. The advantages include high bandwidth, low turn-off delay, a wide -55°C to 125°C temperature range, and low power consumption. Additional benefits include tight Current Transfer Ratio (CTR) and process controls, resulting in small part-to-part skew. The ISOM8110 opto-emulator is ideal for power supply feedback design, I/O modules in industrial controllers, motor drives, and factory automation applications.

Features

  • Drop-in-replacement and pin-to-pin upgrade to industry-standard phototransistor optocouplers
  • Single-channel diode-emulator input
  • 100% to 155% CTR at IF = 5mA, VCE = 5V
  • High collector-emitter voltage: VCE (max) = 80V
  • Robust isolation barrier
    • 3750VRMS isolation rating
    • 500VRMS, 707VPK working voltage
    • Up to 10kV surge capability
  • 3µs (typical) response time at VCE = 10V, IC = 2mA, RL = 100Ω
  • Safety-related certifications planned
    • UL 1577 recognition, 3750VRMS isolation
    • DIN EN IEC 60747-17 (VDE 0884-17) conformity per VDE
    • IEC 62368-1, IEC 61010-1 certifications
    • CQC GB 4943.1 certification
  • -55°C to 125°C temperature range

Applications

  • Switching power supplies
  • Programmable Logic Controllers (PLC)
  • Motor drive I/O and position feedback
  • Factory automation
  • Data acquisition
  • HEV/EV Battery-Management Systems (BMS)

Simplified Schematic

Schematic - Texas Instruments ISOM8110 Single-Channel Opto-Emulator

Block Diagram

Block Diagram - Texas Instruments ISOM8110 Single-Channel Opto-Emulator

Texas Instruments ISOM8110 Single-Channel Opto-Emulator