L6498D

Overview

The L6498D is a high-voltage half-bridge gate driver manufactured using BCD6 OFF-LINE technology, designed for driving N-channel power MOSFETs and IGBTs. It features a floating high-side section capable of withstanding a DC voltage rail up to 500 V and 600 V transient withstand voltage. The device provides independent high-side and low-side outputs, each sourcing 2 A and sinking 2.5 A. Logic inputs are CMOS/TTL compatible down to 3.3 V. Key electrical parameters include a supply voltage range of 10 V to 20 V, propagation delays of 85 ns, and switching times of 25 ns rise/fall with a 1 nF load. It operates within a temperature range of -40 °C to +125 °C.

Feature Summary

• Integrated interlocking function prevents simultaneous drive of both outputs to ensure safe operation.
• Independent UVLO protection circuits on both high-side and low-side sections prevent switch operation in inefficient or dangerous conditions.
• Built-in bootstrap diode simplifies application PCB design and reduces the overall bill of materials.
• High dV/dt immunity of ±50 V/ns across the full temperature range ensures reliable performance in noisy environments.

Applications

• Driving medium and high capacity power MOSFETs in half-bridge configurations
• Gate driving for IGBTs in industrial power conversion systems
• Inverter stages in motor control applications
• AC-DC and DC-DC converter topologies requiring isolated high-side switching

Procurement Notes

Verify the specific suffix 'D' indicates the SOIC-8 surface-mount package variant when ordering. Confirm RoHS compliance status through official STMicroelectronics documentation prior to procurement. Ensure that the selected packaging format matches the intended assembly process requirements. Cross-reference the manufacturer part number with authorized distributors to validate authenticity and current availability status.

Selection Notes

Select the L6498D when a compact half-bridge solution with integrated bootstrap diode is required to minimize external component count. Choose this device for applications needing robust dV/dt immunity and independent under-voltage lockout for both bridge legs. It is suitable for designs interfacing directly with 3.3 V or 5 V logic controllers without additional level shifting circuitry.

Part Context

The L6498D belongs to the L6498 series of high-voltage gate drivers from STMicroelectronics. This series utilizes BCD6 OFF-LINE technology to integrate high-voltage capabilities with standard logic interfaces. The L6498 family is engineered to simplify the design of half-bridge power stages by combining driver functionality with protective features in a single chip.

Replacement Considerations

Consult official STMicroelectronics substitution guides for verified alternatives. Generic cross-references may not match the specific BCD6 technology integration or the exact 600 V transient withstand capability documented for this component.