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Infineon Technologies TLE71851EXUMA1
- Part No.:
- TLE71851EXUMA1
- Manufacturer:
- Infineon Technologies
- Category:
- Motor Drivers, Controllers
- Package:
- 36-BSSOP (0.295", 7.50mm Width) Exposed Pad
- Datasheet:
-
TLE71851EXUMA1.pdf
- Description:
- IC MOTOR DRIVER 5.5V-32V 36DSO
- Quantity:
- Payment:
- Shipping:
Inventory:4,385
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Product details
Overview
TLE71851EXUMA1 from Infineon Technologies is a 3-phase high- and low-side MOSFET bridge driver IC for automotive motor control, featuring six independent gate drive channels, integrated charge pump enabling operation down to 5.5 V supply, adjustable dead time (via external resistor), shoot-through protection, and analog-adjustable short-circuit detection. It drives external N-channel MOSFETs in cooling fans, water pumps, and electric power steering systems.
For engineers reviewing the TLE71851EXUMA1 datasheet, TLE71851EXUMA1 pinout, TLE71851EXUMA1 application, or TLE71851EXUMA1 equivalent, key selection criteria include bootstrap-capable high-side drive capability, AEC-Q100 qualification, diagnostic ERR1/ERR2 open-drain outputs, and support for 0–95% high-side duty cycle at 20 kHz PWM frequency with ≥330 nF bootstrap capacitors.
Technical Context
The TLE71851EXUMA1 implements three independent floating high-side drivers with bootstrap supply (BHx/SHx/GHx) and synchronous low-side drivers (GLx/SLx), each with dedicated input control (IHx active-low, ILx active-high). Its integrated charge pump sustains high-side gate drive under low battery conditions (Vs ≥ 5.5 V), while level shifters isolate logic-level inputs from high-voltage half-bridge domains.
Protection architecture includes per-phase short-circuit detection referenced to VDH, programmable via SCDL resistor; under-voltage lockout on Vs; over-voltage warnings on Vs and VDH; over-temperature warning; and configurable shoot-through prevention via STOE and DT pins. Diagnostics are reported through ERR1/ERR2 with 2-bit encoding per fault type.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 5.5 V to 32 V - supports cold-crank operation (≥6.5 V required for wake-up) and full 12 V automotive net compliance. |
| High-Side Duty Cycle | 0–95% - enables precise torque control in BLDC motor commutation without high-side shoot-through risk. |
| Bootstrap Capacitance | ≥330 nF - minimum value ensures stable gate drive during continuous 20 kHz PWM with 95% duty cycle. |
| Quiescent Current | ≤22 µA - enables ultra-low-power sleep mode for always-on vehicle subsystems. |
| Short-Circuit Detection | Analog-adjustable via SCDL pin - allows tuning trip threshold to match specific MOSFET RDS(on) and layout parasitics. |
| Diagnostic Outputs | ERR1/ERR2 open-drain - provide encoded fault status (short circuit, over temp, UVLO, OV) to microcontroller GPIOs. |
| AEC-Q100 Grade | Grade 0 (−40 °C to +150 °C junction) - qualified for safety-critical powertrain and chassis applications. |
Pinout & Package
Package: PG-DSO-36-38 (36-pin exposed-pad SOIC with thermal pad); RoHS-compliant, green product.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VS, GND (pins 15,16,18,35) | Main power and ground rails | Four GND pins and thermal pad must be connected to PCB ground plane for thermal dissipation and noise immunity. |
| BH1–BH3 (pins 33,28,23) | Bootstrap capacitor positive terminals | Each connects to dedicated 1–4.7 µF charge pump capacitor (CH/CL) and buffer capacitor (CB) for high-side gate drive. |
| GH1–GH3, GL1–GL3 (pins 32,27,22,30,25,20) | High- and low-side gate drive outputs | Direct connection to gates of external N-MOSFETs; GHx floats with SHx source; GLx referenced to SLx source. |
| SH1–SH3, SL1–SL3 (pins 31,26,21,29,24,19) | High- and low-side source return nodes | Provide Kelvin sensing paths for short-circuit detection and enable accurate current monitoring per phase. |
| IH1–IH3, IL1–IL3 (pins 5,7,9,6,8,10) | Logic-level control inputs | IHx active-low, ILx active-high - compatible with standard MCU GPIOs; internal pull-down/pull-up resistors defined in datasheet. |
| SCDL, DT, STOE (pins 36,11,1) | Analog configuration inputs | Resistor-connected pins for setting short-circuit threshold, dead time duration, and shoot-through enable/disable per half-bridge. |
| ERR1, ERR2 (pins 3,2) | Open-drain fault reporting outputs | Encoded 2-bit status output; require external pull-up resistors to MCU VDDIO for fault logging and safe shutdown. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated charge pump | Enables high-side drive at Vs as low as 5.5 V - eliminates need for external high-voltage supply in 12 V automotive systems. |
| Per-phase short-circuit detection | Voltage-sensing at VDH with analog threshold adjustment - detects MOSFET failure or winding short before thermal runaway occurs. |
| Dedicated source pins (SHx/SLx) | Provides Kelvin connections for accurate current sensing and minimizes PCB trace inductance impact on protection timing. |
| Programmable dead time | Externally set via resistor on DT pin - prevents simultaneous conduction in half-bridges without requiring MCU firmware intervention. |
| ERRx diagnostic encoding | Two open-drain outputs encode up to four fault types (SC, OV, UV, OT) - reduces MCU GPIO count and simplifies fault-handling software. |
Applications
| Cooling Fan Control | Electric Power Steering (EPS) |
|---|---|
Use Scenario: Variable-speed radiator fan driven by 3-phase BLDC motor in ICE and hybrid vehicles. IC Role / Device Role / Timing Role: Gate driver for six external N-MOSFETs in inverter stage; provides real-time short-circuit protection during stall events. Use Value: Enables fail-safe shutdown within microseconds upon winding short, preventing thermal damage to motor and ECU. | Use Scenario: Torque-assist motor control in column-assist or rack-assist EPS systems. IC Role / Device Role / Timing Role: High-reliability 3-phase driver with AEC-Q100 Grade 0 qualification and diagnostic feedback for ASIL-B functional safety compliance. Use Value: ERR1/ERR2 outputs feed directly into safety monitor MCU, satisfying ISO 26262 diagnostic coverage requirements for motor driver faults. |
| Water Pump Drive | Electro-Hydraulic Brake (EHB) |
Use Scenario: Engine-cooling or cabin-heating coolant circulation using brushless DC pump motor. IC Role / Device Role / Timing Role: Controls MOSFET switching sequence with 0–95% high-side duty cycle to regulate flow rate across wide temperature and load ranges. Use Value: Integrated charge pump maintains gate drive integrity during cold-crank (6.5 V min), ensuring uninterrupted pump operation at engine start. | Use Scenario: Actuation of hydraulic modulators in brake-by-wire systems requiring fast, deterministic motor response. IC Role / Device Role / Timing Role: Precision gate driver with <1 µs propagation delay matching and shoot-through prevention to guarantee valve timing accuracy. Use Value: Adjustable dead time (DT pin) allows fine-tuning to match MOSFET switching characteristics, minimizing energy loss and EMI in safety-critical braking path. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 3-phase gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BD63002MUV | Lacks integrated charge pump; requires external high-side supply; no analog SCDL adjustment; only one ERR output. | Targeted at industrial BLDC drives with stable >10 V supply; not AEC-Q100 qualified. | Select when cost sensitivity outweighs automotive qualification and low-voltage operation needs. |
| UCC27211D | Single 3-phase driver channel (not 3 independent half-bridges); no built-in diagnostics or protection; no VDH-based short-circuit sensing. | Used in non-safety-critical consumer/commercial inverters where external MCU handles all fault management. | Select only if full system-level fault handling is implemented externally and thermal derating is acceptable. |
Compared with BD63002MUV and UCC27211D, the TLE71851EXUMA1 uniquely integrates charge-pump-based high-side drive, analog-configurable protection, dual ERR diagnostics, and AEC-Q100 Grade 0 qualification-making it the only option suitable for ASIL-B automotive motor control without external supervision.
Availability
TLE71851EXUMA1 is available at Aetrix Electronics and suitable for cooling fan control, electric power steering, and water pump drive applications requiring stable component supply, long-term automotive lifecycle support, and traceable RoHS-compliant sourcing.
Supply support for TLE71851EXUMA1 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 electronics, and industrial control ICs, with global manufacturing and quality certification aligned to IATF 16949.
The TLE71851EXUMA1 belongs to Infineon's TLE71xx family of automotive-grade gate drivers, designed specifically for robust, diagnostic-enabled 3-phase motor control in safety-critical chassis and powertrain systems.
FAQ
What is the minimum supply voltage required to activate the TLE71851EXUMA1?
The TLE71851EXUMA1 requires a minimum of 6.5 V on the VS pin to wake up from standby and enable gate drive functionality. While the absolute operating range extends down to 5.5 V, reliable initialization and charge pump startup occur only above 6.5 V, as specified in the functional range table of Rev. 2.4 datasheet.
How is short-circuit protection configured on the TLE71851EXUMA1?
Short-circuit protection is configured via the SCDL pin: connecting an external resistor between SCDL and GND sets the detection threshold based on the VDH voltage drop across external MOSFETs. The threshold is analog-adjustable from 0.2 V to 1.2 V, allowing optimization for specific RDS(on) values and PCB layout parasitics without firmware changes.
Does the TLE71851EXUMA1 support 100% low-side duty cycle?
Yes, the TLE71851EXUMA1 supports 0–100% duty cycle on low-side outputs (GL1–GL3), enabling full-range PWM control for regenerative braking or synchronous rectification modes. This is explicitly specified in section 4.2.7 of the datasheet under "Duty cycle LS DLS".
Can the TLE71851EXUMA1 drive both N-channel and P-channel MOSFETs?
No, the TLE71851EXUMA1 is designed exclusively for driving external N-channel MOSFETs in high-side (with bootstrap) and low-side (ground-referenced) configurations. Its GHx outputs are floating high-side drivers with level-shifted logic, and GLx outputs are ground-referenced - neither supports direct P-channel gate drive or complementary topology.
TLE71851EXUMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 36-BSSOP (0.295", 7.50mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Motor Type - Stepper:
- -
- Motor Type - AC, DC:
- Brushless DC (BLDC), Brushed DC
- Function:
- Controller - Commutation, Direction Management
- Output Configuration:
- Pre-Driver - Half Bridge (3)
- Interface:
- Parallel
- Technology:
- Power MOSFET
- Step Resolution:
- -
- Applications:
- -
- Current - Output:
- -
- Voltage - Supply:
- 5.5V ~ 32V
- Voltage - Load:
- -
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-DSO-36-38
TLE71851EXUMA1 FAQ
1.How can I place an order for TLE71851EXUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE71851EXUMA1 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 TLE71851EXUMA1 reliable?
The price and inventory of TLE71851EXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE71851EXUMA1 is usually 5 days.
3.What payment methods are accepted for TLE71851EXUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE71851EXUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE71851EXUMA1?
TLE71851EXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE71851EXUMA1 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 TLE71851EXUMA1?
For technical support, including TLE71851EXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE71851EXUMA1 requirements.
6.How does Aetrix verify that TLE71851EXUMA1 is sourced from the original manufacturer or authorized distributors?
All TLE71851EXUMA1 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 TLE71851EXUMA1 meets industry standards.
7.What is the process for return or replacement of TLE71851EXUMA1?
All TLE71851EXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE71851EXUMA1, 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 TLE71851EXUMA1 part is unused and in its original packaging.
Return procedure for TLE71851EXUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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