APTM50AM19STG

Overview

The APTM50AM19ST is a Power MOS 7 phase leg module featuring an integrated N-channel MOSFET and parallel Schottky diode. It provides a 500V drain-source breakdown voltage with a maximum continuous drain current of 170A at 25°C case temperature. The device incorporates a Kelvin source connection to minimize stray inductance during switching. Electrical characteristics include a maximum on-resistance of 19mΩ and rated avalanche energy capabilities. The package integrates an internal NTC thermistor for thermal monitoring.

Feature Summary

• Power MOS 7 technology providing low on-resistance and low gate charge
• Kelvin source configuration for simplified drive circuitry
• Internal NTC thermistor for precise junction temperature monitoring
• High ruggedness with repetitive avalanche energy rating

Applications

• Motor control systems
• Switched mode power supplies
• Uninterruptible power supplies

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm exact electrical tolerances and screening levels. Ensure that the procurement channel sources components directly from authorized distributors or the manufacturer to guarantee authenticity. Confirm compliance requirements such as RoHS status prior to finalizing orders, as manufacturing processes may vary by production batch.

Selection Notes

Select this component for high-frequency applications requiring robust performance and thermal management. The integrated Kelvin source simplifies gate drive design by reducing parasitic inductance effects. Consider the internal thermistor for advanced protection schemes. Evaluate the thermal impedance and mounting torque specifications to ensure effective heat dissipation within the target enclosure constraints.

Part Context

This module belongs to the Power MOS 7 family developed by Advanced Power Technology (APT), which was acquired by Microsemi Corporation. The product line focuses on high-reliability discrete and power modules designed for demanding industrial environments. The integration of MOSFETs with complementary diodes in a single isolated package optimizes board space and switching performance.

Replacement Considerations

Consult official cross-reference lists for verified substitutes. Ensure replacement parts match the 500V rating, 170A current capacity, and TO-264AA physical dimensions. Verify that alternative devices support Kelvin source connections if low stray inductance is critical for the application.

FAQ

What is the purpose of the Kelvin source terminal?

The Kelvin source terminal provides a dedicated path for the gate drive return, separating it from the high-current main source path. This minimizes the impact of stray inductance on switching performance.

How does the internal thermistor function?

An NTC thermistor is embedded within the module to monitor junction temperature. Its resistance changes predictably with temperature, allowing for active thermal protection and monitoring circuits.

Is the device rated for avalanche operation?

Yes, the datasheet specifies ratings for both repetitive and non-repetitive avalanche energy, indicating the device can withstand avalanche conditions within specified limits.