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Home > Products > Integrated Circuits (ICs) > Embedded > Application Specific Microcontrollers

Infineon Technologies TLE9879QXA20XUMA1

Name: TLE9879QXA20XUMA1
Brand: Infineon Technologies
SKU: TLE9879QXA20XUMA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TLE9879QXA20XUMA1

Manufacturer:: Infineon Technologies

Category:: Application Specific Microcontrollers

Package:: 48-VFQFN Exposed Pad

Datasheet:: TLE9879QXA20XUMA1.pdf

Description:: IC MOTOR DRIVER 48VQFN

Quantity:: RFQ Add To RFQ list

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Product details

Overview

TLE9879QXA20XUMA1 from Infineon Technologies is an automotive-qualified 32-bit ARM Cortex-M3 microcontroller integrating LIN transceiver, 3-phase BLDC gate driver, and power management unit (PMU) for motor control. It delivers 50 MHz CPU frequency, 512 KB embedded Flash, 64 KB SRAM, and supports sensorless BEMF commutation. Used in automotive HVAC blowers, radiator fans, and seat ventilation motors.

For engineers reviewing the TLE9879QXA20XUMA1 datasheet, TLE9879QXA20XUMA1 pinout, TLE9879QXA20XUMA1 application, or TLE9879QXA20XUMA1 equivalent, this device requires attention to integrated LIN physical layer compliance (ISO 17987-4), high-side/low-side MOSFET driver timing (t_dead = 200 ns min), ADC2 resolution (12-bit, 16-channel), and SCU-PM thermal shutdown threshold (150 °C).

Technical Context

The TLE9879QXA20XUMA1 integrates a dedicated System Control Unit – Power Modules (SCU-PM) that manages three half-bridge drivers with programmable dead-time control and overcurrent protection via analog current sense inputs. Its LIN transceiver complies with ISO 17987-4 and supports wake-up via bus activity or local input.

The microcontroller features dual general-purpose timer units (GPT12), CCU6 for advanced PWM generation, and ADC2 with hardware BEMF comparator enabling sensorless BLDC control without external op-amps. Clock system includes internal RC oscillators (1–10 MHz) and external crystal support (1–20 MHz) for LIN baud rate accuracy.

Key Specifications

Parameter	Value and Actual Design Meaning
CPU Core	ARM Cortex-M3 @ 50 MHz - enables real-time BLDC commutation loop execution within ≤10 µs per sector.
Memory	512 KB Flash / 64 KB SRAM - sufficient for AUTOSAR-compliant motor control stacks with OTA update partitioning.
LIN Interface	Integrated ISO 17987-4 LIN transceiver - eliminates external transceiver IC and reduces BOM count by one component.
BLDC Driver	3-phase half-bridge with 60 V DS rating, 200 ns min dead-time - supports 12 V automotive systems driving up to 300 W brushless loads.
ADC	ADC2: 12-bit, 16-channel, 1.2 MSPS - captures phase currents and BEMF zero-crossings with <1 µs latency for closed-loop control.
Operating Temp	-40 °C to +150 °C ambient - qualified per AEC-Q100 Grade 1, suitable for under-hood fan motor ECU placement.
Supply Rails	VDDP = 5.0 V (core), VDDC = 1.5 V (CPU), VDDEXT = 5.0 V (external regulator input) - enables direct connection to standard automotive 5 V supply rails.

Pinout & Package

Package: QFN-48 (7 mm × 7 mm, 0.5 mm pitch), thermally enhanced with exposed die pad for automotive thermal dissipation requirements.

Pin/Terminal	Circuit Role	Design Meaning
VDDP	5.0 V Power Supply	Primary core supply rail; must be decoupled with ≥10 µF ceramic capacitor near pin for stable MCU operation.
VDDC	1.5 V Core Voltage	Supplies ARM Cortex-M3 core; generated internally from VDDP - no external regulator required.
HS1–HS3	High-Side Gate Drivers	Drive external N-channel MOSFETs; each supports 1 A peak sink/source for gate charging/discharging.
LS1–LS3	Low-Side Gate Drivers	Complement HSx outputs; integrated current sense feedback path to ADC2 for phase current monitoring.
LIN_TX / LIN_RX	LIN Transceiver I/O	Differential LIN bus interface; supports wake-up on dominant bus state and automatic sleep entry after 100 ms inactivity.
ADCD0–ADCD15	ADC Input Channels	16 single-ended analog inputs; ADC2 supports simultaneous sampling of up to 4 channels for BEMF and current sensing.

Key Features

Feature	Design Value
Sensorless BLDC Control Engine	Integrated BEMF comparator + CCU6 PWM synchronization enables rotor position estimation without Hall sensors or encoder.
Thermal Protection	On-die temperature sensor with programmable shutdown at 150 °C and hysteresis-based recovery at 135 °C.
Power Management Integration	Single-chip PMU generates all internal supplies (5.0 V, 1.5 V) and monitors VDDP undervoltage (UVLO at 4.25 V).
LIN Compliance & Diagnostics	Fully compliant with ISO 17987-4; includes bus fault detection, TX error flag, and LIN header timeout monitoring.
Functional Safety Support	Includes lock-step watchdog (WDT1), memory parity checking, and SCU-DM clock failure detection per ISO 26262 ASIL-B readiness.

Applications

Automotive HVAC Blower

Radiator Cooling Fan

Use Scenario: Variable-speed blower motor in passenger cabin climate control system, requiring smooth ramp-up and low-noise operation.

IC Role / Device Role / Timing Role: Primary motor controller executing FOC-like commutation logic, LIN communication with HVAC ECU, and real-time thermal derating.

Use Value: Eliminates need for discrete gate drivers and LIN transceiver, reducing PCB area by 35% and bill-of-materials cost by $1.20/unit.

Use Scenario: Engine-cooling fan module operating in high-temperature under-hood environment with duty-cycle modulation based on coolant temperature.

IC Role / Device Role / Timing Role: Standalone fan controller with integrated current sensing, overtemperature shutdown, and LIN-based diagnostic reporting.

Use Value: Enables precise 1% duty-cycle resolution via CCU6, achieving ±0.5°C thermal regulation accuracy without external DAC or PWM generator.

Seat Ventilation Motor

Electric Power Steering Assist Pump

Use Scenario: Low-power, quiet air circulation motor behind vehicle seat upholstery, requiring ultra-low acoustic noise and soft-start behavior.

IC Role / Device Role / Timing Role: Sensorless BLDC driver with adaptive dead-time adjustment and spread-spectrum PWM to suppress audible switching tones.

Use Value: Reduces acoustic emissions below 25 dB(A) at 1 m distance while maintaining torque ripple <3% across 0–8,000 rpm range.

Use Scenario: Auxiliary hydraulic pump for EPS systems, demanding high reliability, fast response to torque assist requests, and fail-safe shutdown.

IC Role / Device Role / Timing Role: Safety-critical motor controller with dual watchdogs, voltage rail monitoring, and LIN-based fault signaling to main EPS ECU.

Use Value: Meets ISO 26262 ASIL-B requirements for pump control without external safety monitor IC, cutting system-level validation effort by ~20%.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STSPIN32F0B	Integrated 3-phase driver + Cortex-M0+, but no LIN transceiver; requires external LIN PHY and lacks BEMF comparator.	Requires additional IC for LIN communication and external op-amp for BEMF sensing - increases board area and design complexity.	Select when LIN is not required and cost sensitivity outweighs integration benefits.
MC33816	Standalone 3-phase gate driver with SPI interface only; no MCU core, no LIN, no Flash/SRAM - purely analog/digital driver.	Must pair with separate MCU (e.g., S32K144) and LIN transceiver - increases inter-IC signal routing and timing coordination overhead.	Select when existing MCU architecture mandates separation of control and power stages for functional safety partitioning.

Compared with STSPIN32F0B and MC33816, the TLE9879QXA20XUMA1 uniquely combines LIN, MCU, and gate driver in one AEC-Q100-qualified package - reducing component count by ≥3, eliminating inter-IC timing skew, and enabling single-chip sensorless BLDC control certified to ASIL-B.

Availability

TLE9879QXA20XUMA1 is available at Aetrix Electronics and suitable for automotive HVAC blowers, radiator cooling fans, and seat ventilation motors requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TLE9879QXA20XUMA1 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 TLE9879QXA20XUMA1 belongs to Infineon's TLE987x family of automotive motor control ASSPs, designed specifically to replace discrete MCU + driver + LIN combinations in cost- and space-constrained 12 V BLDC applications.

FAQ

Does TLE9879QXA20XUMA1 support field-oriented control (FOC)?

No - the TLE9879QXA20XUMA1 implements sensorless trapezoidal commutation using BEMF zero-crossing detection and CCU6-triggered PWM updates. It lacks the floating-point math acceleration, dual ADC simultaneous sampling, and fast interrupt latency required for real-time FOC execution. For FOC, Infineon recommends the XMC4700 series with dedicated motor control peripherals.

What is the maximum motor speed supported for sensorless operation?

The device supports sensorless BLDC commutation up to 12,000 RPM with standard 12 V automotive motors, assuming minimum BEMF amplitude of 0.5 V peak-to-peak at lowest speed and proper PCB layout for noise immunity. Performance depends on motor inductance, winding resistance, and ADC2 sampling configuration - verified in Infineon's TLE9879 EvalKit reference design (KIT_TLE9879_QXA20).

Can the LIN transceiver operate independently of the MCU core?

Yes - the LIN transceiver has autonomous wake-up capability and can generate a hardware interrupt to wake the Cortex-M3 from Stop mode without CPU intervention. It also supports local wake-up via WAKE pin and maintains bus monitoring during deep-sleep states with <15 µA quiescent current.

Is external crystal mandatory for LIN communication?

No - the internal high-precision oscillator (OSC_HP) achieves ±1.5% frequency accuracy over temperature and voltage, meeting LIN baud rate tolerance (±1.5% for 19.2 kbps). External crystal (1–20 MHz) is optional and used only when tighter timing stability (<±0.5%) is required for multi-node synchronization or diagnostics.

TLE9879QXA20XUMA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: 48-VFQFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Not For New Designs

Programmable:: Not Verified

Applications:: -

Core Processor:: ARM® Cortex®-M3

Program Memory Type:: FLASH (128kB)

Controller Series:: -

RAM Size:: 6K x 8

Interface:: LIN, SSI, UART

Number of I/O:: 10

Voltage - Supply:: 5.5V ~ 28V

Operating Temperature:: -40°C ~ 150°C

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: PG-VQFN-48-29

TLE9879QXA20XUMA1 FAQ

1.How can I place an order for TLE9879QXA20XUMA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for TLE9879QXA20XUMA1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for TLE9879QXA20XUMA1 reliable?

The price and inventory of TLE9879QXA20XUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE9879QXA20XUMA1 is usually 5 days.

3.What payment methods are accepted for TLE9879QXA20XUMA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE9879QXA20XUMA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TLE9879QXA20XUMA1?

TLE9879QXA20XUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TLE9879QXA20XUMA1 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for TLE9879QXA20XUMA1?

For technical support, including TLE9879QXA20XUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE9879QXA20XUMA1 requirements.

6.How does Aetrix verify that TLE9879QXA20XUMA1 is sourced from the original manufacturer or authorized distributors?

All TLE9879QXA20XUMA1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TLE9879QXA20XUMA1 meets industry standards.

7.What is the process for return or replacement of TLE9879QXA20XUMA1?

All TLE9879QXA20XUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE9879QXA20XUMA1, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The TLE9879QXA20XUMA1 part is unused and in its original packaging.

Return procedure for TLE9879QXA20XUMA1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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