Broadcom ACPL-38JT-500E

Avago’s automotive 2.5 Amp 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. Avago R2Coupler isolation products provide the reinforced insulation and reliability needed for critical in 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. An output IC provides local protection for the IGBT to prevent damage during overcurrents, and a second optical link provides a fully isolated fault status feedback signal for the microcontroller. A built in “watchdog” circuit monitors the power stage supply voltage to prevent IGBT caused by insufficient gate drive voltages. This integrated IGBT gate driver is designed to increase the performance and reliability of a motor drive without the cost, size, and complexity of a discrete design.

• 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: – UL1577, CSA IEC/EN/DIN EN 60747-5-5

• 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