L6498LDTR

Overview

The L6498LDTR is a high-voltage half-bridge gate driver manufactured using BCD6 OFF-LINE technology, designed for N-channel power MOSFETs and IGBTs. It features a floating high-side section supporting a DC voltage rail up to 500 V with 600 V transient withstand capability. The device provides independent high-side and low-side outputs capable of sinking 2.5 A and sourcing 2 A. Logic inputs are CMOS/TTL compatible down to 3.3 V. Key electrical parameters include a propagation delay of 85 ns, switching times of 25 ns rise/fall with a 1 nF load, and dV/dt immunity of ±50 V/ns across the full temperature range.

Feature Summary

• Integrated interlocking function prevents simultaneous driving of both outputs high
• Independent UVLO protection circuits on high-side and low-side sections prevent operation in dangerous conditions
• Built-in bootstrap diode simplifies PCB layout and reduces bill of materials
• High dV/dt immunity ensures reliable performance under fast switching transients

Applications

• Medium and high capacity power MOSFET and IGBT drive in motor control applications
• High-voltage half-bridge configurations in industrial power supplies
• Inverter stages in AC/DC and DC/DC conversion systems

Procurement Notes

Verify the specific suffix LDTR against the manufacturer's current datasheet to confirm package type and tape-and-reel specifications. Ensure compatibility with the target PCB footprint for the SOIC-8 package. Confirm that the logic interface levels match the control unit output signals. Check for any recent product change notifications regarding material composition or manufacturing site changes.

Selection Notes

Select this component when a robust half-bridge driver with integrated bootstrap functionality is required for high-voltage applications. The 500 V operating rating and 600 V transient withstand make it suitable for offline converters. Consider the 2.5 A sink current for driving larger capacitive loads efficiently. Verify that the 3.3 V logic compatibility aligns with the microcontroller or DSP used in the system design.

Part Context

The L6498LDTR belongs to the L6498 series of high-voltage gate drivers from STMicroelectronics. This series utilizes BCD6 technology to integrate high-voltage components with standard logic interfaces on a single chip. The L6498 family is designed to simplify the design of half-bridge topologies by reducing external component count and improving reliability through integrated protection features like UVLO and interlocking.

Replacement Considerations

The L6498DTR is a verified substitute part number within the same series offering identical functional characteristics.