LM5100AM

Overview

The LM5100AM is a high-voltage half-bridge gate driver manufactured by National Semiconductor. It provides independent high-side and low-side outputs capable of driving power MOSFETs or IGBTs in bridge configurations. The device features a wide supply voltage range, robust propagation delay matching, and built-in dead-time control to prevent shoot-through currents. Designed for industrial and automotive applications, it ensures reliable switching performance under harsh electrical conditions with integrated protection mechanisms.

Feature Summary

• Independent high-side and low-side output channels for half-bridge topologies
• Wide operating supply voltage range suitable for high-voltage power stages
• Integrated dead-time generation to minimize cross-conduction risks
• Robust package design supporting thermal dissipation in compact layouts

Applications

• Industrial motor drives and inverters
• Automotive power electronics systems
• High-voltage DC-DC converter stages
• Resonant and soft-switching power supplies

Procurement Notes

Verify the manufacturer origin as National Semiconductor, noting that Texas Instruments acquired the portfolio. Confirm the specific suffix 'AM' denotes the military/extended temperature grade variant if required by your design specifications. Ensure the datasheet version matches the intended application voltage levels and thermal requirements before finalizing procurement orders.

Selection Notes

Select this component when designing half-bridge circuits requiring independent control of high-side and low-side switches. Consider the wide input voltage range and propagation delay characteristics for timing-sensitive applications. Evaluate the package thermal performance against your system's heat dissipation capabilities. Verify compatibility with your logic control signals and ensure adequate decoupling for stable operation.

Part Context

The LM5100AM belongs to the LM5100 series of high-voltage gate drivers. This family includes variants like LM5101 and LM5102 with different current drive capabilities. These devices are commonly used in power conversion architectures where precise switching control and isolation between inputs and outputs are critical for system efficiency and safety.

Replacement Considerations

LM5100AM/NOPB