TLE9879QXW40XUMA3

Overview

The TLE9879QXW40XUMA3 is an embedded power microcontroller from Infineon's MOTIX™ family, designed for automotive applications. It integrates a 32-bit ARM® Cortex®-M3 core operating at up to 40 MHz with 128 kB of flash memory and 6 kB of RAM. The device features a built-in MOSFET driver with a charge pump for driving a 3-phase BLDC motor via six external N-channel FETs. Key peripherals include a LIN 2.2 transceiver, two differential 14-bit sigma-delta ADCs, and a high-speed operational amplifier for shunt-based current sensing. It operates on a single supply voltage ranging from 5.5 V to 28 V and is qualified to AEC-Q100 standards.

Feature Summary

• Integrated 32-bit ARM® Cortex®-M3 processor with 128 kB Flash and 6 kB RAM
• Built-in MOSFET driver stage with charge pump for 3-phase BLDC motor control
• LIN 2.2 transceiver and dual 14-bit sigma-delta ADCs for precise measurement
• High-speed operational amplifier for motor current sensing via shunt resistors
• AEC-Q100 qualified for automotive reliability with -40°C to +175°C junction temperature range

Applications

• Brushless DC (BLDC) motor drives in automotive systems
• Electronic water pumps and cooling fans
• HVAC blower motors
• Fuel pumps and sensor-less motor applications

Procurement Notes

Verify the specific suffix XUMA3 against the official Infineon datasheet to confirm package type and tape/reel specifications. Ensure compatibility with the target application's voltage range (5.5V–28V) and thermal requirements (-40°C to +175°C TJ). Confirm that the 48-VFQFN package matches the PCB footprint design. Check for any required programming tools or debug interfaces such as SWD support during the sourcing phase.

Selection Notes

Select this component when a highly integrated solution for 3-phase BLDC motor control is required within automotive constraints. The inclusion of a LIN transceiver simplifies network communication compared to standard MCU-only solutions. Consider the 14-bit sigma-delta ADCs if high-precision current and voltage monitoring are necessary for Field-Oriented Control (FOC) algorithms. Verify that the external NFET selection aligns with the internal driver capabilities and charge pump performance.

Part Context

This part belongs to the Infineon MOTIX™ TLE987x series, which combines microcontroller functionality with power stages. The TLE9879 variant specifically targets 3-phase motor applications, distinguishing itself from other family members like the TLE9877 (which may have different peripheral sets or integration levels). The XUMA3 suffix typically denotes a specific packaging and reel configuration used by Infineon for mass production.

Replacement Considerations

Direct replacements within the same family include TLE9879QXA40XUMA3 or TLE9879-2QXA40 variants, depending on the required package (VQFN-48-31 vs VQFN-48-79) and feature set. Cross-family substitution with TLE9877 models requires careful verification of pin compatibility and peripheral availability, particularly regarding the number of ADCs and motor driver configurations.