L6398DTR

Overview

The L6398DTR is a high-voltage half-bridge gate driver manufactured using STMicroelectronics' BCD offline technology. It is designed to drive N-channel power MOSFETs or IGBTs, featuring a floating high-side section rated for voltage rails up to 600 V. The device includes logic inputs compatible with CMOS and TTL standards down to 3.3 V, facilitating direct interfacing with microcontrollers and DSPs. Key electrical parameters include a source current capability of 290 mA and a sink current of 430 mA. Switching times are specified as 75 ns rise and 35 ns fall with a 1 nF load. The component offers dV/dt immunity of ±50 V/ns across the full temperature range and incorporates an integrated bootstrap diode with a fixed 320 ns deadtime.

Feature Summary

• High-voltage rail handling up to 600 V for robust offline applications
• Integrated bootstrap diode and fixed deadtime for simplified circuit design
• CMOS/TTL input compatibility down to 3.3 V for easy digital interfacing
• High dV/dt immunity ensuring reliable operation in noisy environments

Applications

• Half-bridge topology driving for AC/DC adapters
• Resonant converter topologies requiring high-voltage isolation
• Brushless DC (BLDC) motor control systems
• Permanent Magnet Synchronous Motor (PMSM) drives

Procurement Notes

Verify the specific ordering suffix 'DTR' corresponds to the tape-and-reel packaging configuration when sourcing components. Confirm that the selected variant matches the required package type and thermal characteristics for the intended application environment. Ensure compliance with RoHS directives and other relevant regulatory standards applicable to the final product assembly.

Selection Notes

Select this component for designs requiring a single-chip solution for N-channel MOSFET or IGBT half-bridge drivers. The integrated features reduce bill of materials by eliminating external bootstrap diodes and timing resistors. Consider the 3.3 V logic compatibility for low-voltage microcontroller interfaces. Evaluate the thermal performance within the SOIC-8 package against the expected power dissipation levels in the target system.

Part Context

The L6398DTR belongs to the L6398 family of high-voltage gate drivers from STMicroelectronics. These devices utilize BCD offline technology to achieve high voltage ratings in a compact footprint. The family is engineered for offline applications where reliability and component count reduction are critical. The DTR suffix specifically denotes the reel packaging format suitable for automated surface-mount assembly processes.

Replacement Considerations

Public confirmed substitute part numbers: None identified.