Infineon Technologies TLE9877QXA40XUMA3

Overview

TLE9877QXA40XUMA3 from Infineon Technologies is a single-chip 32-bit ARM® Cortex®-M3 based automotive BLDC motor controller IC with integrated LIN transceiver, six N-channel high-side and low-side gate drivers, current sense amplifier, voltage regulator, and watchdog timer. It operates at up to 150 MHz, supports 5 V and 12 V battery systems, and is qualified per AEC-Q100 Grade 1 (−40 °C to +125 °C). Used in automotive HVAC blower and radiator fan control.

For engineers reviewing the TLE9877QXA40XUMA3 datasheet, TLE9877QXA40XUMA3 pinout, TLE9877QXA40XUMA3 application, or TLE9877QXA40XUMA3 equivalent, key selection criteria include integrated gate driver configuration, LIN physical layer compliance, embedded flash size, thermal performance under continuous PWM load, and qualification for under-hood automotive environments.

Technical Context

The TLE9877QXA40XUMA3 integrates a 32-bit ARM Cortex-M3 CPU core with 1 MB embedded Flash, 80 KB SRAM, and hardware accelerators for motor control algorithms including FOC and six-step commutation. It features a dedicated 12-bit ADC with 16 channels, two capture/compare units for precise timing, and a programmable 32-bit watchdog timer with windowing capability.

Its power management includes an internal 5 V voltage regulator (VDD5), a 3.3 V LDO (VDD33), and overtemperature/overcurrent protection circuitry tied directly to gate driver outputs. The LIN transceiver complies with ISO 17987-4 and supports wake-up via bus activity or local input.

Key Specifications

Pinout & Package

Package: QFN-48 (7 mm × 7 mm, 0.5 mm pitch, exposed thermal pad).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLE9877QXA40XUMA3, the TLE9879QXA40XUMA3 offers higher-speed communication and faster analog acquisition but increases system cost; the MC33816AE lowers MCU complexity and licensing cost but increases board area and component count due to external LIN PHY.

Availability

TLE9877QXA40XUMA3 is available at Aetrix Electronics and suitable for automotive HVAC blower modules, radiator fan assemblies, and electric power steering assist systems requiring stable component supply across multi-year production cycles.

Supply support for TLE9877QXA40XUMA3 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 TLE9877 belongs to Infineon's TLE987x family of automotive-qualified motor control ICs designed specifically for cost-optimized, single-chip BLDC solutions in engine compartment and cabin-mounted applications.

FAQ

What is the maximum junction temperature rating for TLE9877QXA40XUMA3?

The TLE9877QXA40XUMA3 is rated for operation up to +150 °C junction temperature, validated per AEC-Q100 Grade 1 requirements. Thermal shutdown activates at 165 °C ±5 °C to protect gate drivers and analog circuitry during overload conditions. The exposed thermal pad must be soldered to a minimum 100 mm² copper pour for reliable heat dissipation in continuous 10 A peak phase current applications.

Does TLE9877QXA40XUMA3 support Field-Oriented Control (FOC)?

Yes, the TLE9877QXA40XUMA3 supports FOC through its hardware-accelerated motor control peripherals, including synchronized ADC sampling, PWM dead-time insertion, and position encoder interface (via CAP1/CAP2 pins). Reference firmware libraries for FOC are provided in Infineon's AURIX™ and TLE987x SDK, enabling implementation without external DSP or FPGA.

Can TLE9877QXA40XUMA3 operate from a 24 V truck battery system?

No, the absolute maximum VBAT rating is 27 V, but the internal regulators and gate drivers are characterized only for 5 V and 12 V battery architectures. Operation above 16 V risks undervoltage lockout misbehavior and reduced gate drive strength; it is not qualified for 24 V commercial vehicle use per AEC-Q100 test plan. Use TLE987x variants with extended VBAT range only if explicitly specified.

Is the embedded Flash memory field-programmable?

Yes, the 1 MB embedded Flash supports in-system programming (ISP) via UART, LIN, or SWD interface using Infineon's DAVE™ IDE and Flash Loader tools. It allows secure firmware updates in end-of-line testing or field service, with checksum verification and write-protection regions configurable per sector to prevent accidental overwrite of boot code.