A6387D

Overview

The A6387D is a high-voltage half-bridge gate driver manufactured using BCD offline technology, designed for N-channel Power MOSFETs or IGBTs. It features a floating high-side section supporting voltage rails up to 550 V. The device provides independent source and sink currents of 400 mA and 650 mA respectively, with switching times of 50 ns rise and 30 ns fall under a 1 nF load. Logic inputs are CMOS/TTL compatible with Schmitt-trigger characteristics. It includes an internal bootstrap diode, interlocking function, and dV/dt immunity of ±50 V/nsec across the full temperature range.

Feature Summary

• High-voltage rail capability up to 550 V for floating high-side operation
• Integrated interlocking function prevents simultaneous high-side and low-side conduction
• CMOS/TTL Schmitt-trigger inputs with hysteresis and pull-down resistors
• Internal bootstrap diode eliminates external component requirement

Applications

• Driving N-channel Power MOSFETs in half-bridge configurations
• Driving IGBTs in industrial power conversion systems
• Automotive applications requiring AEC-Q100 qualified components
• Microcontroller or DSP interfacing for motor control

Procurement Notes

Verify the specific suffix 'D' indicates the SOIC package variant when ordering. Confirm AEC-Q100 automotive qualification status aligns with target application requirements. Ensure supply chain sources provide official STMicroelectronics documentation to validate manufacturing origin and compliance with RoHS3 standards. Cross-reference part numbers with distributor catalogs to avoid confusion with similar series variants.

Selection Notes

Select this component for applications requiring robust high-side driving capabilities with integrated protection features. The CMOS/TTL compatibility simplifies interface design with standard digital controllers. Consider the 550 V rating for medium-voltage power stages. The internal bootstrap diode reduces bill of materials complexity. Verify thermal performance within the -40°C to 125°C junction temperature range for the intended operating environment.

Part Context

The A6387D belongs to the A6387 family of high-voltage gate drivers from STMicroelectronics. It utilizes BCD offline technology to integrate high-voltage and logic circuits on a single chip. This family is designed for reliable operation in demanding power electronics environments, offering high dV/dt immunity and precise switching characteristics suitable for modern power conversion topologies.

Replacement Considerations

The L6387E is a public confirmed substitute part number within the same manufacturer portfolio. Both devices share similar functional architectures and high-voltage capabilities. Verify pinout compatibility and electrical parameter alignment before substitution. Ensure the replacement meets all original design specifications regarding voltage ratings and current drive capabilities.