Automotive Gate Drive Optocoupler with R²Coupler™ Isolation

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Broadcom's 2.5 Amp R2Coupler, Automotive Gate Drive Optocoupler, with Integrated Desaturation (VCE) Detection and Fault Status Feedback makes automotive IGBT VCE fault protection compact, affordable, and easy-to-implement while satisfying automotive AEC-Q100 Grade 1 semiconductor requirement.

Broadcom R2Coupler, Automotive Gate Drive Optocoupler, isolation products provide the reinforced insulation and reliability needed for critical automotive and high temperature industrial applications.

The ACPL-38JT is a highly integrated power control device that incorporates all the necessary components for a complete, isolated IGBT gate drive circuit with fault protection and feedback into one SO-16 package. TTL input logic levels allow direct interface with a microcontroller, and an optically isolated power output stage drives IGBTs with power ratings of up to 150 A and 1200 V. A high speed internal optical link minimizes the propagation delays between the microcontroller and the IGBT while allowing the two systems to operate at very large common mode voltage differences that are common in industrial motor drives and other power switching applications. 


  • 2.5 A maximum peak output current
  • Drive IGBTs up to IC = 150 A, VCE = 1200 V
  • Optically isolated, FAULT status feedback
  • SO-16 package
  • CMOS/TTL compatible
  • 500 ns max. switching speeds
  • “Soft” IGBT turn-off
  • Integrated fail-safe IGBT protection
    – Desat (VCE) detection
    – Under Voltage Lock-Out protection (UVLO) with hysteresis
  • User configurable: inverting, noninverting, auto-reset, auto-shutdown
  • Wide operating VCC range: 15 to 30 Volts
  • -40°C to +125°C operating temperature range
  • 15 kV/μs min. Common Mode Rejection (CMR) at VCM = 1500 V
  • Qualified to AEC-Q100 Grade 1 Test Guidelines
  • Regulatory approvals (Pending):
    – UL1577, CSA
    – IEC/EN/DIN EN 60747-5-2
  • Options Available are:
    • 500 = Tape and Reel Packaging Option
    • XXXE = Lead Free Option


  • Automotive Isolated IGBT/MOSFET Inverter Gate Drive
  • Automotive DC-DC Converter
  • AC and Brushless DC Motor Drives
  • Industrial Inverters for power supplies and motor controls
  • Un-interruptible power supplies

Lifecycle Status


Substance Compliance

  • RoHS
    Pb & Pb-free options available
Specification Value
Lifecycle Active
Distrib. Inventory Yes
Product Type Automotive Optocoupler
CMR (min.) (V/µs) 15000.0
Vcm (V) 1500.0
RoHS6 Compliant Pb & Pb-free options available
Operating Temperature Range -40°C to +125°C
UL Insulation Rating Viso (VRMS) 5000.0
IEC Maximum Working Insulation Voltage Viorm (VPEAK) 1230.0
Prop Delay (tPHL) Max. (µs) 0.5 µs
Prop Delay (tPLH) Max. (µs) 0.5 µs
Options Data Sheet3 i
Reliability Data Sheet5 i
Selection Guide2 i
White Papers6 i
Photocard1 i