L6390DTR

Overview

The L6390DTR is a high-voltage half-bridge gate driver manufactured using BCD offline technology, designed for N-channel power MOSFETs and IGBTs. It supports a voltage rail up to 600 V with dV/dt immunity of ±50 V/nsec. The device provides 290 mA source and 430 mA sink output currents, featuring switching times of 75 ns rise and 35 ns fall with a 1 nF load. Logic inputs are CMOS/TTL compatible down to 3.3 V. It includes an integrated operational amplifier for current sensing, a comparator for fault protection, adjustable deadtime, interlocking functions, and UVLO protection.

Feature Summary

• Integrated operational amplifier suitable for advanced current sensing in field-oriented motor control or sensorless BEMF detection
• Built-in comparator with smartSD function ensuring fast protection against overcurrent and overtemperature events
• Programmable deadtime and interlocking mechanisms prevent cross-conduction between high-side and low-side outputs

Applications

• Three-phase motor control systems including permanent magnet synchronous motors (PMSM)
• High-frequency inverter bridges for industrial drives
• Collaborative robot joint actuators requiring hardware protection features

Procurement Notes

Verify the specific suffix DTR corresponds to tape-and-reel packaging when ordering. Confirm that the component matches the SO-16 package dimensions and pinout requirements for the target PCB layout. Ensure supply chain sources provide original manufacturer documentation to validate authenticity and lot traceability.

Selection Notes

Select this component for applications requiring a single-chip solution with integrated protection and sensing capabilities. The embedded operational amplifier reduces external component count compared to standard drivers. Consider the 600 V rating and high dV/dt immunity for robust performance in noisy high-power environments.

Part Context

The L6390 belongs to STMicroelectronics' family of high-voltage half-bridge gate drivers. It utilizes BCD offline technology to integrate power and logic functions on a single chip. This approach simplifies application design by reducing the bill of materials and enabling more compact PCB layouts compared to discrete driver solutions.

Replacement Considerations

The L6393 is a related variant within the same product family offering similar high-voltage driving capabilities. Verify pin compatibility and feature set differences, such as the presence of the integrated operational amplifier in the L6390 but not in the L6393, before substituting.