Automotive R²Coupler™ Smart Gate Drive Optocoupler

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ACPL-32JT is a 2.5A Automotive R2Coupler Smart Gate Drive Optocoupler, which features integrated flyback controller for isolated DC-DC converter, IGBT Desaturation sensing with fault feedback, Under-Voltage LockOut (UVLO) with soft-shutdown and fault feedback and active Miller current clamping.   The fast propagation delay and tight timing skew performance enables excellent timing control and efficiency.  This full feature optocoupler comes in a compact, surface-mountable SO-16 package for space-savings, and is suitable for traction power train inverter, power converter, battery charger, air-conditioner and oil pump motor drives in HEV and EV applications.

Broadcom R2Coupler isolation products provide the reinforced insulation and reliability needed for critical automotive and high temperature industrial applications.



  • Qualified to AEC-Q100 Grade 1 Test Guidelines
  • Operating temperature range: -40°C to +125°C 
  • Integrated flyback controller for isolated DC-DC converter
  • Regulated Output Voltage: 20V
  • Peak output current: 2.5A  (max.)
  • Miller Clamp Sinking Current: 1.7A (max.)
  • Wide Input Voltage Range: 8V to 18V
  • Propagation delay: 250ns (max.) 
  • Dead time distortion range: -160ns to +60ns
  • Common Mode Rejection (CMR): >50 kV/μs at VCM = 1500 V
  • Integrated fail-safe IGBT protection:
    – Desat sensing, "Soft" IGBT turn-off and Fault Feedback
    – Under Voltage Lock-Out (UVLO) protection with Feedback
  • High Noise Immunity:
    – Miller Current Clamping
    – Direct LED input with low input impedance and low noise sensitivity
    – Negative Gate Bias
  • Compact SO-16 package with 8mm clearance and creepage
  • Regulatory approvals:
    – UL1577, CSA (5000VRMS for 1min)
    – IEC/EN/DIN EN 60747-5-5 (VIORM = 1230VPEAK)
  • Options Available are:
    • 500 = Tape and Reel Packaging Option
    • XXXE = Lead Free Option


  • Automotive Isolated IGBT/MOSFET Gate Drive
  • Hybrid and Plug-in Powertrain Inverter
  • Automotive DC-DC Converter
  • AC and Brushless DC Motor Drives
  • Uninterruptible Power Supplies (UPS)

Lifecycle Status


Substance Compliance

  • RoHS
    Pb-free options
Specification Value
Lifecycle Active
Distrib. Inventory Yes
Product Type Automotive Optocoupler
CMR (min.) (V/µs) 50000.0
Vcm (V) 1500.0
IF Min. (mA) 10.0
RoHS6 Compliant Pb-free options only
Operating Temperature Range -40°C to +125°C
Package SO16
UL Insulation Rating Viso (VRMS) 5000.0
IEC Maximum Working Insulation Voltage Viorm (VPEAK) 1230.0
Prop Delay (tPHL) Max. (µs) 0.25 µs
Prop Delay (tPLH) Max. (µs) 0.25 µs
Application Note2 i
Data Sheet1 i
Options Data Sheet3 i
Reliability Data Sheet6 i
Photocard1 i


Automotive Gate Drive Optocoupler with R²Coupler™ Isolation


Automotive Gate Drive Optocoupler with R²Coupler™ Isolation