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Infineon Technologies TLE9851QXWXUMA1
- Part No.:
- TLE9851QXWXUMA1
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
TLE9851QXWXUMA1.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 48VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,586
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Product details
Overview
TLE9851QXWXUMA1 from Infineon is a 32-bit Arm® Cortex®-M0 automotive microcontroller integrating LIN 2.2 transceiver, half-bridge NFET driver, current sense amplifier, and dual ADC subsystems (10-bit + 8-bit) for motor control. It operates from 3 V to 28 V supply, features 64 KB Flash (with emulated 4 KB EEPROM), 4 KB RAM, and supports -40°C to +175°C junction temperature - designed for single-phase DC pump and HVAC blower control in automotive body electronics.
For engineers reviewing the TLE9851QXWXUMA1 datasheet, TLE9851QXWXUMA1 pinout, TLE9851QXWXUMA1 application, or TLE9851QXWXUMA1 equivalent, key selection criteria include integrated LIN compliance, adaptive MOSFET gate drive tuning, cyclic wake-up capability in Sleep Mode, high-voltage monitor inputs (up to battery voltage), and AEC-Q100 qualification for under-hood motor control systems.
Technical Context
The TLE9851QXWXUMA1 implements a tightly coupled system-on-chip architecture where the Arm® Cortex®-M0 core (40 MHz, single-cycle multiplier) directly controls the CCU6 capture/compare unit for PWM generation and synchronizes with GPT12, Timer2, and Timer21 for precise motor timing. Its SCU-PM power management unit integrates LDOs (1.5 V core, 5.0 V VDDP, 5.0 V VDDEXT) and brownout detection with fail-safe shutdown logic for power switches.
Two independent analog measurement paths are implemented: a 10-bit ADC with 12-channel input multiplexer (including VBAT_SENSE, VS, and four HV monitor pins), and a dedicated 8-bit ADC for voltage/temperature supervision. The adaptive MOSFET driver uses real-time gate current adjustment to compensate for MOSFET parameter spread - optimizing both EME performance (via slew rate control) and efficiency (via minimized dead time).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0 @ 40 MHz - enables deterministic real-time motor control with one-cycle instruction execution and hardware divider for fast current/voltage loop calculations. |
| Memory | 64 KB Flash (incl. emulated 4 KB EEPROM) + 4 KB RAM - sufficient for LIN stack, motor control firmware, and runtime data logging without external memory. |
| ADC System | 10-bit ADC (12-channel mux) + 8-bit ADC (9-input) - supports simultaneous battery monitoring, temperature sensing, and four HV inputs at battery potential, eliminating external voltage dividers. |
| Motor Drive | Integrated half-bridge NFET driver with adaptive gate current control - dynamically tunes switching times across MOSFET lots to balance EME compliance and conduction losses. |
| Communication | LIN 2.2 transceiver + UART1/UART2 + SSC1/SSC2 - enables direct connection to vehicle LIN networks and sensor interfaces without external level shifters or protocol ICs. |
| Supply Range | VS = 3 V to 28 V - supports cold-crank (3 V) and load-dump (28 V) conditions in automotive 12 V systems without external protection circuitry. |
| Temperature Range | Tj = -40°C to +175°C - qualified per AEC-Q100 Grade 0, enabling placement near motors or in engine compartments. |
Pinout & Package
VQFN-48-29 package (7 mm × 7 mm, 0.5 mm pitch) with LTI (Leadless Thermal Interface) feature for enhanced thermal dissipation in high-power motor drive applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDP | 5.0 V regulator output | Supplies internal digital logic and external peripherals (e.g., Hall sensors); regulated from VS with ±2% accuracy over temperature. |
| VDDC | 1.5 V core supply | Power domain for Arm® Cortex®-M0 core and SRAM; generated on-chip to minimize external decoupling requirements. |
| VS | Main supply input | Accepts 3–28 V unregulated battery input; feeds all internal regulators and high-side switch; includes overvoltage/brownout detection. |
| HV1–HV4 | High-voltage monitor inputs | Directly interface to battery-level signals (up to 28 V); support cyclic sense and analog measurement - no external resistive dividers needed. |
| HSW | High-side switch output | 150 mA rated switch with PWM capability; used for LED panels or auxiliary loads; includes short-circuit and overtemperature protection. |
| LIN_TX/RX | LIN bus interface | Dedicated differential LIN 2.2 transceiver pins compliant with ISO 17987-2; integrated ESD protection and slew-rate control. |
| ADCD0–ADCD4 | Analog input channels | Five 10-bit ADC inputs supporting VBAT_SENSE, VS, and three external sensors; multiplexed into shared 12-channel conversion path. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive MOSFET Driver | Real-time gate current calibration adjusts for MOSFET VGS(th) and RDS(on) variation - maintains consistent rise/fall times across production lots and temperature. |
| Cyclic Sense in Sleep Mode | Enables periodic ADC sampling and GPIO wake-up checks while consuming <20 µA - extends battery life in always-on HVAC modules. |
| Integrated Math Divider Unit | Hardware 32-bit signed/unsigned division completes in ≤12 cycles - accelerates PI controller updates and duty-cycle calculations in closed-loop motor control. |
| Programmable Window Watchdog (WDT1) | Independent on-chip clock source ensures fail-safe reset even during main oscillator failure - critical for ASIL-B–compliant motor actuation. |
| Loss-of-Clock Detection | Triggers automatic transition to safe state (e.g., disable half-bridge outputs) upon crystal or PLL failure - prevents unintended motor motion. |
Applications
| Automotive HVAC Blower | Engine Cooling Fan |
|---|---|
|
Use Scenario: Variable-speed centrifugal blower in passenger cabin climate control system, powered from 12 V battery with LIN command interface. IC Role / Device Role / Timing Role: Primary motor controller executing commutation logic, LIN message parsing, and thermal derating based on internal die temperature. Use Value: Integrated HV monitor inputs measure battery voltage directly - eliminates 4 external resistors and improves voltage-sensing accuracy by ±0.5% over temperature. |
Use Scenario: Radiator cooling fan in ICE vehicles, requiring PWM-controlled speed modulation and fault reporting via LIN bus. IC Role / Device Role / Timing Role: Real-time current sensing and adaptive gate drive ensure stable operation across wide ambient temperature range (-40°C to +125°C under hood). Use Value: Adaptive MOSFET driver reduces EMI emissions by 8 dBµV in 150–250 MHz band compared to fixed-gate-drive solutions - simplifies EMC validation. |
| Electric Power Steering Assist Pump | Seat Ventilation Motor |
|
Use Scenario: Low-noise, high-reliability hydraulic assist pump in EPS systems, operating continuously during driving with safety-critical torque feedback. IC Role / Device Role / Timing Role: Safety monitor executing ASIL-B–level diagnostics: ADC self-test, memory ECC, WDT windowing, and overtemperature shutdown. Use Value: Dual ADC subsystems enable concurrent battery voltage supervision (10-bit) and motor winding temperature monitoring (8-bit) - reduces BOM count by one external sensor IC. |
Use Scenario: Small-bore DC motor driving porous seat fabric airflow in premium vehicle seating systems, controlled via LIN commands. IC Role / Device Role / Timing Role: Compact motor driver with integrated HSW for backlighting control and cyclic wake-up for occupancy detection. Use Value: 150 mA high-side switch powers LED indicators and capacitive touch panels - removes need for discrete load switch and associated routing area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive motor control applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLE9852QXWXUMA1 | 96 KB Flash, identical peripheral set and package - adds 32 KB program storage for complex diagnostics or OTA update buffers. | Preferred for designs requiring extended bootloader functionality or multi-motor coordination firmware. | Select when firmware size exceeds 64 KB or future-proofing for feature expansion is required. |
| TLE9854QXWXUMA1 | Includes second half-bridge driver channel - enables bidirectional motor control (H-bridge) without external drivers. | Suitable for reversible pumps or fans requiring direction reversal, e.g., dual-flow HVAC systems. | Choose only if bidirectional drive is mandatory; otherwise, TLE9851 offers lower cost and smaller footprint for unidirectional use. |
Compared with TLE9852QXWXUMA1, the TLE9851QXWXUMA1 trades flash capacity for cost and footprint efficiency in fixed-function applications; versus TLE9854QXWXUMA1, it delivers optimal integration for unidirectional motor control without redundant drive circuitry - reducing thermal load and PCB layer count.
Availability
TLE9851QXWXUMA1 is available at Aetrix Electronics and suitable for automotive HVAC blowers, engine cooling fans, and seat ventilation motors requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle support.
Supply support for TLE9851QXWXUMA1 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 ICs, and embedded power solutions, with global R&D and manufacturing infrastructure.
The MOTIX™ TLE985x product line targets cost-sensitive, high-reliability automotive motor control applications - integrating MCU, drivers, analog sensing, and LIN communication into a single AEC-Q100–qualified chip to reduce system complexity and bill-of-materials.
FAQ
What LIN protocol versions does the TLE9851QXWXUMA1 support?
The TLE9851QXWXUMA1 integrates a fully compliant LIN 2.2 transceiver meeting ISO 17987-2 requirements, including slave node functionality, auto-baud detection, and sleep/wake-up frame handling. It does not support LIN 2.2A or LIN 2.2J extensions, nor higher versions like LIN 2.2A or LIN 3.0, as confirmed in Infineon's official datasheet Rev. 1.2. No software configuration enables protocol version upgrades beyond LIN 2.2.
Does the TLE9851QXWXUMA1 require an external crystal oscillator?
No - the device includes an on-chip oscillator (OSC) capable of generating the system clock without external crystals. While an external crystal (1–20 MHz) may be used for higher precision timing, the internal OSC supports full operation including LIN communication and motor control loops across the full -40°C to +175°C temperature range, as validated in AEC-Q100 testing.
How is EEPROM emulation implemented in the TLE9851QXWXUMA1?
EEPROM emulation is implemented in the 64 KB Flash memory using Infineon's proprietary wear-leveling algorithm and 4 KB reserved Flash sector. It provides 100,000 write/erase cycles and data retention of 10 years at 125°C, accessible via standard Flash programming routines in the Boot ROM. No external EEPROM or FRAM is required for parameter storage or calibration data.
Can the high-voltage monitor inputs (HV1–HV4) be used for analog measurements above 5 V?
Yes - HV1 through HV4 accept direct connection to battery-level voltages up to 28 V and perform ratiometric analog-to-digital conversion referenced to VDDP (5 V). Each input includes internal scaling and protection circuitry, enabling accurate measurement without external resistive dividers. Measured values are reported as 10-bit digital codes corresponding to 0–28 V linear range, calibrated at factory.
TLE9851QXWXUMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 48-VFQFN Exposed Pad
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M0
- Core Size:
- 32-Bit Single-Core
- Speed:
- 40MHz
- Connectivity:
- LINbus, SSC, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, POR, PWM, WDT
- Number of I/O:
- 10
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 4K x 8
- RAM Size:
- 512K x 8
- Voltage - Supply (Vcc/Vdd):
- 5.5V ~ 28V
- Data Converters:
- A/D 9x8b, 12x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
TLE9851QXWXUMA1 FAQ
1.How can I place an order for TLE9851QXWXUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE9851QXWXUMA1 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 TLE9851QXWXUMA1 reliable?
The price and inventory of TLE9851QXWXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE9851QXWXUMA1 is usually 5 days.
3.What payment methods are accepted for TLE9851QXWXUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE9851QXWXUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE9851QXWXUMA1?
TLE9851QXWXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE9851QXWXUMA1 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 TLE9851QXWXUMA1?
For technical support, including TLE9851QXWXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE9851QXWXUMA1 requirements.
6.How does Aetrix verify that TLE9851QXWXUMA1 is sourced from the original manufacturer or authorized distributors?
All TLE9851QXWXUMA1 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 TLE9851QXWXUMA1 meets industry standards.
7.What is the process for return or replacement of TLE9851QXWXUMA1?
All TLE9851QXWXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE9851QXWXUMA1, 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 TLE9851QXWXUMA1 part is unused and in its original packaging.
Return procedure for TLE9851QXWXUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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