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Broadcom ACPL-K43CT & ACPL-K44CT R2Coupler™ Optocouplers

Broadcom ACPL-K43CT and ACPL-K44CT Automotive R2Coupler™ Optocouplers offer an eight-lead miniature footprint designed for automotive applications. The single-channel, high-temperature, high-CMR, high-speed digital optocouplers are available in the stretched SO-8 package outline developed to be compatible with standard surface-mount processes. The ACPL-K44CT is a dual-channel equivalent of the ACPL-K43CT.

The Broadcom ACPL-K43CT and ACPL-K44CT digital optocouplers use an insulating layer between the light-emitting diode and an integrated photodetector to supply electrical insulation between input and output. Separate connections for the photodiode bias and output transistor collector reduce the base-collector capacitance, increasing the speed up to a hundred times over that of a conventional photo-transistor coupler.

Broadcom R2Coupler isolation devices enable reinforced insulation and reliability that produce safe signal isolation, critical in automotive and high-temperature industrial applications.

Features

  • High temperature and reliability digital interface for automotive applications
  • Ultra-low drive for status feedback at IF = 0.8mA or 1.5mA
  • 30kV/μs (typical) high common-mode rejection at VCM =1500V
  • Compact, auto-insertable stretched SO8 packages
  • Qualified to AEC Q100 Grade 1 test guidelines
  • 1MBd high speed
  • -40°C to +125°C wide operating temperature range
  • Low propagation delay of 1μs max. at IF = 10mA
  • Worldwide safety approval
    • UL 1577 approval, 5kVRMS/1 minute
    • CSA approval
    • IEC/EN 60747-5-5

Applications

  • Automotive IPM driver for DC-DC converters and motor inverters
  • Status feedback and wake-up signal isolation
  • CANBus and SPI communications interface
  • High-temperature digital/analog signal isolation

Specifications

  • 20mA average forward input current
  • 40mA peak forward input current
  • 5V reversed input voltage
  • 30mW input power dissipation (per channel)
  • 100mW output power dissipation
  • 8mA average output current
  • 16mA peak output current
  • -0.5V to +30V supply voltage
  • 20V output voltage
  • 10s/260°C lead soldering cycle

Functional Diagram

Broadcom ACPL-K43CT & ACPL-K44CT R2Coupler™ Optocouplers

Schematics

Mechanical Drawing - Broadcom ACPL-K43CT & ACPL-K44CT R2Coupler™ Optocouplers

Package Outline Dimensions mm

Mechanical Drawing - Broadcom ACPL-K43CT & ACPL-K44CT R2Coupler™ Optocouplers
Inilathala: 2025-01-13 | Na-update: 2025-01-22