L6388D

Overview

The L6388D is a high-voltage half-bridge gate driver manufactured using BCD offline technology, designed to drive N-channel power MOSFETs or IGBTs. It supports a high-side floating voltage rail up to 600 V with dV/dt immunity of ±50 V/nsec across the full temperature range. The device features dual outputs capable of sourcing 400 mA and sinking 650 mA, ensuring robust switching performance. Switching times are specified as 70 ns rise and 40 ns fall with a 1 nF load. Logic inputs are compatible with 3.3 V, 5 V, and 15 V CMOS/TTL standards. Integrated protection includes UVLO for both supply voltages and an interlocking function to prevent cross-conduction.

Feature Summary

• High-voltage capability supporting a 600 V floating rail with strong dV/dt immunity
• Integrated bootstrap diode enabling compact and reliable circuit design
• Built-in deadtime and interlocking functions to prevent simultaneous output activation

Applications

• Driving half-bridge configurations of power MOSFETs or IGBTs
• High-voltage motor control systems
• Industrial power supply inverters

Procurement Notes

Verify the specific suffix against official STMicroelectronics documentation to confirm package type and tape/reel specifications. Ensure compatibility with required logic voltage levels (3.3 V, 5 V, or 15 V) and validate thermal management requirements for the selected packaging option prior to integration.

Selection Notes

Select this component for applications requiring a single-chip solution for high-side and low-side driving with integrated bootstrap functionality. Consider the SOIC-8 or DIP-8 package availability based on board space constraints. Verify that the input signal timing aligns with the internal deadtime and interlocking mechanisms to ensure safe operation under all load conditions.

Part Context

The L6388D belongs to the L638xE series of high-voltage gate drivers from STMicroelectronics. This family utilizes BCD technology to integrate high-voltage capabilities with standard logic interfaces. The series provides various pinout options, including SOIC-8 and DIP-8, catering to different mounting requirements while maintaining consistent electrical performance characteristics for half-bridge applications.

Replacement Considerations

Public confirmed substitute part numbers: L6388ED, L6388E.