Infineon Technologies TLE9891QTA61XUMA1

Overview

TLE9891QTA61XUMA1 from Infineon Technologies is a 32-bit Arm® Cortex®-M3 automotive microcontroller with integrated CAN-FD transceiver and 3-phase N-FET bridge driver, designed for BLDC motor control in auxiliary automotive systems. It operates from 5.5 V to 28 V, features 32 KB FLASH0 + 256 KB FLASH1 (with EEPROM emulation), 32 KB RAM, -40°C to 175°C junction temperature, and supports ASIL-B safety requirements per ISO 26262.

For engineers reviewing the TLE9891QTA61XUMA1 datasheet, TLE9891QTA61XUMA1 pinout, TLE9891QTA61XUMA1 application, or TLE9891QTA61XUMA1 equivalent, this device delivers integrated motor control logic, real-time BEMF sensing via three comparators, 12-bit/10-bit ADCs, 14-bit SDADC for rotary position, CCU7-based PWM generation, and fail-safe switch-off path - critical for pump, fan, and HVAC actuator designs.

Technical Context

The TLE9891QTA61XUMA1 integrates a dedicated Power Management Unit (PMU) with master supply (VDDP), core supply (VDDC), and external supply (VDDEXT) regulators, enabling single-rail operation from 5.5 V–28 V while maintaining stable internal voltages across load and temperature. Its System Control Unit (SCU) includes PLL-based clock generation, safe reference clock supervision, and FIFO fail-safe monitoring.

Motor control execution relies on the CCU7 timer unit for precise 3-phase PWM generation, synchronized with BEMF comparator outputs and current sense amplifier signals. The integrated CAN-FD controller (MultiCAN+) and physical layer (CANTRX) support high-speed diagnostics and networked actuator coordination at up to 5 Mbit/s data phase.

Key Specifications

Pinout & Package

Package: LQFP-64 (10 mm × 10 mm, 0.5 mm pitch), RoHS-compliant, qualified for automotive under AEC-Q100 Grade 0.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLE9892QXA61XUMA1, the TLE9891QTA61XUMA1 reduces system cost and footprint while retaining full ASIL-B safety and SDADC capability; versus TLE9879QXA40XUMA1, it extends thermal robustness and sensing precision for under-hood deployment.

Availability

TLE9891QTA61XUMA1 is available at Aetrix Electronics and suitable for automotive HVAC blowers, engine cooling fans, and EPS assist pumps requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-compliant traceability.

Supply support for TLE9891QTA61XUMA1 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 is a German semiconductor manufacturer specializing in power management, automotive ICs, and industrial control solutions, with global R&D and manufacturing infrastructure.

The MOTIX™ TLE989x product line targets highly integrated, safety-certified motor control for automotive auxiliary drives - reducing bill-of-materials and board space while meeting ASIL-B functional safety requirements.

FAQ

What is the maximum junction temperature rating for TLE9891QTA61XUMA1?

The TLE9891QTA61XUMA1 is rated for TJ = –40°C to +175°C, validated per AEC-Q100 Grade 0. This enables direct mounting in high-temperature under-hood locations such as radiator fan modules or turbocharger actuators without external heatsinking beyond standard PCB copper pour.

Does TLE9891QTA61XUMA1 require an external crystal oscillator?

Yes - it requires a 4–20 MHz external crystal connected to XTAL1/XTAL2 pins. The internal SCU uses this crystal to generate the master clock and a separate safe reference clock for watchdog and safety monitoring functions, ensuring timing independence for ASIL-B compliance.

How does the safe switch-off path operate independently of firmware?

The safe switch-off path is implemented in hardware within the Bridge Driver (BDRV) block. It monitors dedicated fault inputs (e.g., CSA output, thermal sensor, watchdog timeout signal) and directly disables HS/LS gate outputs within <500 ns - bypassing CPU, NVIC, and software execution entirely.

Can TLE9891QTA61XUMA1 support Field-Oriented Control (FOC)?

Yes - its 12-bit ADC with 19 channels, 14-bit SDADC for position sensing, CCU7 timers with center-aligned PWM, and 60 MHz Cortex-M3 core provide the real-time processing bandwidth and analog precision required for sensor-based or sensorless FOC implementation in automotive BLDC applications.