The ACPL-C87BT is a high-performance, isolated half-bridge gate driver featuring advanced control and protection capabilities. This gate driver is designed to drive MOSFETs or IGBTs in power conversion applications requiring high efficiency, reliability, and safety. It integrates critical functions such as desaturation detection, undervoltage lockout (UVLO), and fault reporting, providing a comprehensive solution for isolated gate drive.

Applications

• Half-bridge and full-bridge power converters
• Motor drives
• Solar inverters
• Uninterruptible power supplies (UPS)
• Welding machines
• Induction heating

Features

• Isolated half-bridge gate driver
• Drives MOSFETs or IGBTs up to 2 A peak current
• Desaturation detection with soft turn-off
• Undervoltage lockout (UVLO)
• Fault reporting
• High common-mode transient immunity (CMTI): >50 kV/μs
• Wide operating temperature range: -40°C to +125°C
• Safety approvals: UL, CSA, IEC/EN/DIN EN 60747-5-5

Benefits

• Provides robust and reliable gate drive for MOSFETs and IGBTs, improving power converter performance.
• Protects power devices from overcurrent and short-circuit conditions with desaturation detection.
• Prevents damage due to insufficient gate voltage with undervoltage lockout.
• Simplifies fault diagnostics with fault reporting.
• Ensures reliable operation in noisy environments with high common-mode transient immunity.
• Enables operation over a wide range of temperatures.
• Meets stringent safety standards for isolation and insulation.

Additional Details

The ACPL-C87BT employs a galvanically isolated architecture, providing electrical isolation between the control circuitry and the power stage. The gate driver includes desaturation detection, which monitors the VCE(sat) voltage of the IGBT or the VDS(on) voltage of the MOSFET. If the voltage exceeds a predefined threshold, the driver initiates a soft turn-off sequence to protect the power device from damage. The undervoltage lockout (UVLO) circuit prevents the power devices from operating in a partially-on state, which can lead to excessive power dissipation and device failure. The ACPL-C87BT also includes a fault reporting feature that signals when a fault condition occurs. The device is available in a compact surface-mount package, making it easy to integrate into space-constrained applications. Detailed specifications, application circuits, and performance data can be found in the product datasheet.