Broadcom ACFJ-3530T smart gate drive optocoupler

The Broadcom^® ACFJ-3530T automotive R²Coupler™ smart gate drive optocoupler features an integrated flyback controller for isolated DC-DC converter, IGBT desaturation sensing with soft-shutdown protection and fault feedback, under-voltage lockout with feedback, and active Miller current clamping. The fast propagation delay with excellent timing skew performance enables excellent timing control and efficiency. This optocoupler comes in a compact, surface-mountable SO-24 package with 0.8 mm pitch for space-savings, and is suitable for HEV and EV applications. 

Key features

• Qualified to AEC-Q100 Grade 1 Test Guidelines
• Automotive temperature range: -40 °C...+125 °C
• Minimum peak output current: ±1.5 A
• Minimum Miller clamp sinking current: 2 A

Additional features

• Integrated flyback controller for isolated DC-DC converter for power supply control and diagnostic:
  • Regulated output supply voltage: 16 V ±5%
  • Programmable negative supply
  • Supply output overload protection
  • Supply output short circuit protection
  • External primary switch
• Maximum propagation delay: 200 ns
• Integrated fail-safe IGBT protection:
  • IGBT desaturation, overcurrent sensing, soft IGBT turn-OFF, and fault feedback
  • Undervoltage Lock-Out (UVLO) protection with feedback
• High noise immunity
  • Common Mode Rejection (CMR): 50 kV/μs at VCM = 1500 V
  • Miller current clamping
  • Direct LED input with low input impedance and low noise sensitivity
  • Negative gate bias
• SO-24 package with 8 mm creepage and clearance
• Regulatory approvals:
  • UL1577, CSA
  • IEC 60747-5-5

Applications

• IGBT/SiC MOSFET gate driver for traction inverter
• IGBT/SiC MOSFET gate driver for charger and HVAC
• IGBT/SiC MOSFET gate driver for in-wheel motor

Additional Info

Broadcom R²Coupler™ isolation products provide reinforced insulation and reliability that deliver safe signal isolation critical in automotive and high-temperature industrial applications.