Infineon Technologies TLE9879QXA40XUMA1

Overview

TLE9879QXA40XUMA1 from Infineon Technologies is a single-chip 3-phase BLDC motor controller IC integrating ARM® Cortex®-M3 core, six N-channel pre-driver outputs, embedded LIN transceiver, and on-chip voltage regulators (5 V, 3.3 V, 1.3 V). It operates at up to 150 MHz, supports 12-bit ADC with 16 channels, and delivers real-time motor control for automotive HVAC blower systems.

For engineers reviewing the TLE9879QXA40XUMA1 datasheet, TLE9879QXA40XUMA1 pinout, TLE9879QXA40XUMA1 application, or TLE9879QXA40XUMA1 equivalent, key selection criteria include integrated pre-driver capability, LIN physical layer compliance, embedded flash size (1 MB), operating junction temperature range (–40 °C to 150 °C), and AEC-Q100 Grade 1 qualification.

Technical Context

The TLE9879QXA40XUMA1 implements a dedicated motor control unit with hardware-based PWM generation, dead-time insertion, and overcurrent protection logic. Its integrated LIN 2.2A transceiver supports wake-up via bus activity and complies with ISO 17987-2/ISO 11898-3.

On-chip power management includes three independent LDOs (5 V/150 mA, 3.3 V/100 mA, 1.3 V/100 mA) and a high-side switch for external 12 V load control. The device uses a 40-pin QFN package with exposed thermal pad and supports SWD debugging interface.

Key Specifications

Pinout & Package

Package: 40-pin QFN (6 mm × 6 mm, 0.5 mm pitch) with exposed thermal pad (EPAD) for enhanced thermal dissipation in motor drive applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC33816AE and DRV3205-Q1, the TLE9879QXA40XUMA1 reduces total component count by integrating MCU, LIN PHY, and power regulation - enabling smaller PCB footprint and simplified functional safety validation for new HVAC and cooling fan designs.

Availability

TLE9879QXA40XUMA1 is available at Aetrix Electronics and suitable for automotive HVAC blower modules, engine cooling fans, and radiator fan assemblies requiring stable component supply and AEC-Q100-compliant motor control solutions.

Supply support for TLE9879QXA40XUMA1 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 semiconductors, microcontrollers, and automotive ICs, with global R&D and manufacturing infrastructure.

The TLE9879 belongs to Infineon's TLE98xx family of automotive-qualified motor control ICs, designed specifically for cost-sensitive, space-constrained BLDC applications in body electronics and thermal management systems.

FAQ

What is the maximum ambient temperature rating for TLE9879QXA40XUMA1 in continuous operation?

The TLE9879QXA40XUMA1 is rated for continuous operation at ambient temperatures up to +105 °C when mounted on a standard 4-layer PCB with 2 oz copper and thermal vias to inner ground planes. Its junction temperature limit remains +150 °C per AEC-Q100 Grade 1, and thermal design must ensure this limit is not exceeded under worst-case load conditions.

Does TLE9879QXA40XUMA1 support sensorless BLDC control out of the box?

Yes - the device includes hardware-accelerated back-EMF sensing circuitry, dedicated motor control timers, and on-chip ROM libraries for sensorless FOC and 6-step commutation. Reference firmware for sensorless operation is provided in Infineon's Motor Control Library (MCLIB) and validated on evaluation boards like TLE9879 EvalKit.

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

Yes - the LIN transceiver supports Sleep Mode with bus-wake functionality per LIN specification. It draws less than 15 µA in sleep and wakes the MCU within 150 µs upon valid LIN header detection, enabling low-power HVAC module standby operation compliant with ISO 14229-3.

Is external crystal required for accurate motor timing?

No - the TLE9879QXA40XUMA1 uses an internal RC oscillator trimmed to ±1% accuracy across temperature and voltage, sufficient for motor control timing. An optional external crystal (1–20 MHz) may be used for higher precision if required by specific application timing budgets, but it is not mandatory.