Infineon Technologies TLE9879QXW40XUMA2

Overview

TLE9879QXW40XUMA2 from Infineon is a single-chip 3-phase BLDC motor controller IC integrating ARM® Cortex®-M3 core, six N-channel pre-driver outputs, integrated LIN transceiver, and embedded voltage regulators. It operates at up to 40 MHz, supports 12 V automotive battery supply, and delivers real-time motor control for electric power steering (EPS) systems.

For engineers reviewing the TLE9879QXW40XUMA2 datasheet, TLE9879QXW40XUMA2 pinout, TLE9879QXW40XUMA2 application, or TLE9879QXW40XUMA2 equivalent, key considerations include its integrated LIN physical layer compliance, on-chip current sensing capability, programmable dead-time control, and AEC-Q100 Grade 1 qualification for under-hood automotive use.

Technical Context

The TLE9879QXW40XUMA2 implements a dedicated motor control engine with hardware-accelerated commutation logic, supporting sensorless FOC and trapezoidal control modes. It includes three independent high-side and low-side gate drivers with adjustable slew rate and overcurrent protection per half-bridge.

Its embedded LIN 2.2A transceiver features bus wake-up detection, TXD dominant timeout, and thermal shutdown. The device integrates a 5 V/150 mA LDO for MCU core supply and a 5 V/200 mA LDO for external peripherals, both with reverse battery protection.

Key Specifications

Pinout & Package

VQFN-48 package with wettable flank terminals, 7 mm × 7 mm body, 0.4 mm pitch, and exposed thermal pad (EPAD) connected to GND for enhanced thermal dissipation in motor control PCB layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 3-phase BLDC motor controller applications.

Compared with STSPIN32F0B and DRV3245QPHPRQ1, the TLE9879QXW40XUMA2 uniquely integrates MCU, LIN, and gate drivers in one AEC-Q100 Grade 1 package-reducing system-level BOM, board space, and validation effort for automotive EPS and EBB.

Availability

TLE9879QXW40XUMA2 is available at Aetrix Electronics and suitable for electric power steering (EPS), electronic brake booster (EBB), and active grille shutter (AGS) systems requiring stable component supply across automotive production lifecycles.

Supply support for TLE9879QXW40XUMA2 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies AG is a German semiconductor manufacturer specializing in power management, automotive electronics, and security solutions, with global R&D and manufacturing infrastructure.

The TLE9879 family targets highly integrated automotive motor control applications, designed to replace multi-chip solutions in EPS, EBB, and HVAC actuators with single-package reliability and AEC-Q100 compliance.

FAQ

What is the maximum junction temperature rating for TLE9879QXW40XUMA2?

The TLE9879QXW40XUMA2 is qualified to AEC-Q100 Grade 1, with a maximum junction temperature of +150 °C. This rating is validated through accelerated life testing and thermal characterization across process corners, enabling direct mounting in high-temperature automotive locations such as EPS columns and brake boosters without external heatsinking.

Does TLE9879QXW40XUMA2 support sensorless motor control?

Yes, the TLE9879QXW40XUMA2 supports sensorless field-oriented control (FOC) and trapezoidal commutation using back-EMF zero-crossing detection. Its hardware motor control unit includes dedicated comparators, timers, and PWM generators that execute commutation logic independently of the Cortex-M3 core, enabling robust startup and low-speed operation down to 0.5 Hz electrical frequency.

Can the integrated LIN transceiver operate in sleep mode with wake-up capability?

Yes, the integrated LIN 2.2A transceiver supports sleep mode with bus wake-up detection. When in sleep mode, it draws <15 µA and monitors the LIN bus for dominant pulses lasting ≥150 µs. Upon detection, it wakes the MCU and asserts WAKE_N, enabling fast system response while meeting automotive standby current requirements.

What is the purpose of the EPAD in the VQFN-48 package?

The EPAD (exposed thermal pad) in the VQFN-48 package serves as the primary thermal conduction path from the die to the PCB. It must be soldered to a solid GND plane with ≥6 thermal vias (0.3 mm diameter, spaced ≤1 mm apart) to achieve ≤25 °C/W junction-to-board thermal resistance, ensuring reliable operation at full 150 °C junction temperature during continuous 3-phase motor drive.