AMT49100KJPTR-A-3

Overview

The AMT49100KJPTR-A-3 is an automotive-grade, three-phase MOSFET gate driver designed for 48V power applications. It operates within a supply voltage range of 10V to 80V and includes a fixed-frequency buck converter for regulated bootstrap charging. The device features a 48-LQFP-EP package with a 7x7mm exposed thermal pad. It supports SPI communication, programmable dead time, and current sense amplifiers. Qualified under AEC-Q100 standards, it targets BLDC motor control in safety-critical systems.

Feature Summary

• Integrated bootstrap gate drive with charge pump enabling full PWM duty cycle operation
• SPI-compatible serial interface for configuration and diagnostics
• Cross-conduction protection with adjustable dead time
• ASIL D capability as a hardware safety element out of context

Applications

• Brushless DC (BLDC) motor control in automotive systems
• High-power inductive load driving in 48V architectures
• Safety-related automotive electronic control units

Procurement Notes

Verify the specific suffix 'A-3' against the manufacturer datasheet to confirm pinout and feature set alignment. Confirm RoHS3 compliance status for regulatory requirements. Check component status as Not Recommended for New Designs (NRND) to assess long-term availability risks before finalizing procurement plans.

Selection Notes

Select this component when designing for 48V automotive environments requiring integrated gate drive and bootstrap management. Ensure the design accommodates the 48-LQFP-EP package thermal requirements. Verify that the system architecture can utilize the SPI interface for the extensive diagnostic and programming capabilities provided by the device.

Part Context

This part belongs to the AMT49100 family from Allegro MicroSystems. It is specifically engineered for automotive safety applications, leveraging ISO 26262 guidelines. The device integrates control logic and power stages, simplifying the design of complex three-phase bridge configurations for high-efficiency motor drives.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult official Allegro MicroSystems resources for potential alternatives or updated revisions.