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Texas Instruments MCT8316Z0RQRGFRQ1
- Part No.:
- MCT8316Z0RQRGFRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Motor Drivers, Controllers
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
MCT8316Z0RQRGFRQ1.pdf
- Description:
- AUTOMOTIVE 40-V MAX, 8-A PEAK, S
- Quantity:
- Payment:
- Shipping:
Inventory:1,849
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Product details
Overview
MCT8316Z0RQRGFRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive-qualified, sensored trapezoidal three-phase BLDC motor driver with integrated FETs, 4.5–35-V operation, 8-A peak output current, 95-mΩ RDS(ON) (HS+LS), and built-in 3.3-V/5-V buck + 3.3-V LDO regulators. It enables code-free motor control in automotive LIDAR and headlight leveling systems using analog or digital Hall sensors.
For engineers reviewing the MCT8316Z0RQRGFRQ1 datasheet, MCT8316Z0RQRGFRQ1 pinout, MCT8316Z0RQRGFRQ1 application, or MCT8316Z0RQRGFRQ1 equivalent, key selection considerations include Hall-based commutation support, integrated current sensing (no external shunts), SPI-configurable fault diagnostics, 200-kHz PWM capability, and thermal shutdown with nFAULT indication.
Technical Context
The MCT8316Z0RQRGFRQ1 implements fixed-function sensored trapezoidal (120°) commutation via on-chip Hall comparators and state machine logic-eliminating need for external microcontroller. It supports configurable PWM modulation (synchronous/asynchronous), active demagnetization, and cycle-by-cycle current limiting with programmable threshold via ILIM pin.
Power management integrates a 200-mA buck regulator (configurable 3.3 V / 5.0 V output) and 30-mA 3.3-V LDO; both supply internal circuitry and can power external components. Protection includes UVLO, OCP, motor lock detection, thermal warning/shutdown, and charge pump undervoltage monitoring.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Voltage | 4.5 V to 35 V (40 V absolute max); supports 12-V and 24-V automotive battery rails with robust transient tolerance. |
| Peak Output Current | 8 A per phase; enables direct drive of small-to-medium BLDC motors without external gate drivers or discrete FETs. |
| RDS(ON) (HS+LS) | 95 mΩ at 25°C; minimizes conduction losses and thermal stress during continuous 6-A RMS operation. |
| PWM Frequency | Up to 200 kHz; allows high-resolution speed control and audible noise suppression in fan/pump applications. |
| Sleep Current | 1.5 µA at 24 V; ensures ultra-low quiescent draw in always-on automotive modules (e.g., headlight leveling). |
| Hall Input Support | Analog differential, single-ended, or digital Hall sensors; eliminates need for external signal conditioning circuitry. |
| Fault Reporting | Dedicated open-drain nFAULT pin + optional SPI-readable diagnostics; enables rapid system-level fault isolation and recovery. |
Pinout & Package
VQFN-40 (7.0 mm × 5.0 mm, exposed thermal pad); RoHS-compliant, automotive-grade package optimized for thermal dissipation in space-constrained modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VM (Pins 9,10,11) | Motor power input | Accepts 4.5–35-V supply; bypassed with dual 0.1-µF + bulk capacitor; feeds all power stages and regulators. |
| OUTA/OUTB/OUTC (Pins 13–20) | Half-bridge outputs | Three-phase gate-driver outputs with integrated 95-mΩ FETs; drive BLDC motor windings directly. |
| HNA/HNB/HNC & HPA/HPB/HPC (Pins 27–32) | Hall sensor inputs | Differential analog or digital Hall interface; supports noise filtering via external capacitors between complementary pairs. |
| PWM (Pin 39) | Speed command input | Logic-level PWM input sets motor duty cycle and speed; compatible with 1.8-V/3.3-V/5-V controllers. |
| nFAULT (Pin 22) | Fault status indicator | Open-drain output pulled low on any fault (OCP, OTSD, UVLO, etc.); requires external pull-up to 1.8–5.0 V. |
| nSLEEP (Pin 23) | Low-power mode control | Logic-low pulse ≥20 µs enters sleep mode (1.5 µA IQM); 20–40 µs pulse resets faults without sleep entry. |
| ILIM (Pin 37) | Current limit threshold | Analog voltage input (AVDD/2 to AVDD/2−0.4 V) sets cycle-by-cycle overcurrent trip point. |
| FGOUT (Pin 40) | Speed feedback output | Open-drain tachometer output; configurable to 1×, 2×, or 3× commutation frequency for closed-loop speed monitoring. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated current sensing | Eliminates external sense resistors and associated PCB area, power loss, and calibration drift-reducing BOM count and layout complexity. |
| Configurable buck regulator | Delivers up to 200 mA at 3.3 V or 5.0 V (via VSEL_BK pin); powers external MCUs, sensors, or communication ICs without secondary regulators. |
| Active demagnetization | Reduces power dissipation during freewheeling by actively discharging inductive energy-improving efficiency and thermal margin at high PWM frequencies. |
| Delay compensation | Corrects duty-cycle distortion caused by MOSFET switching delays-ensuring accurate commutation timing and stable motor operation across temperature and load. |
| Motor lock protection | Detects stalled rotor conditions within 200 ms and initiates latched shutdown; prevents thermal runaway and winding damage in safety-critical applications. |
Applications
| Automotive LIDAR Scanning | Headlight Leveling Actuation |
|---|---|
Use Scenario: Precision angular positioning of rotating LIDAR mirror assemblies in ADAS systems requiring smooth, jitter-free motion under vibration and wide temperature range. IC Role / Device Role / Timing Role: Sensored trapezoidal motor controller executing Hall-based commutation; provides closed-loop speed regulation via FGOUT feedback and real-time current limiting. Use Value: Enables deterministic 120° commutation without firmware development; integrated buck powers position encoder and MCU, reducing system component count. | Use Scenario: Dynamic vertical adjustment of automotive headlight beams during vehicle pitch changes (e.g., braking, acceleration, uneven terrain) to maintain legal beam pattern. IC Role / Device Role / Timing Role: Compact, AEC-Q100 qualified BLDC driver delivering precise torque and position control via Hall feedback; supports fast response to ECU PWM commands. Use Value: 8-A peak current and 95-mΩ RDS(ON) enable direct drive of small gearmotor loads; low 1.5-µA sleep current meets OEM always-on module requirements. |
| Small Automotive Fans | BLDC Motor Modules |
Use Scenario: Cabin air circulation fans in electric vehicles where acoustic noise, efficiency, and reliability are critical across –40°C to 125°C ambient. IC Role / Device Role / Timing Role: Integrated FET driver with synchronous PWM modulation and active demagnetization; manages thermal rise during continuous 6-A RMS operation. Use Value: 200-kHz PWM capability suppresses audible noise; integrated LDO powers fan controller logic, eliminating discrete regulators. | Use Scenario: Turnkey motor control subassemblies for Tier 1 suppliers integrating into HVAC, seat, or sunroof modules-requiring minimal external components and validated automotive qualification. IC Role / Device Role / Timing Role: Single-chip BLDC solution with SPI configuration (MCT8316ZR-Q1 variant), fault diagnostics, and comprehensive protection suite. Use Value: Reduces design cycle time via code-free operation; SPI interface enables runtime tuning of slew rate, lead angle, and OCP behavior without hardware change. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar BLDC motor driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCT8316ZT0RQRGFRQ1 | Hardware-pin configured variant (no SPI); fixed FGOUT = 3× commutation frequency; CSA gain fixed to 0.15 V/A. | Suitable for cost-sensitive, fixed-function designs where register-level tuning is unnecessary and PCB layout avoids SPI routing. | Select when firmware-free, production-optimized control suffices and SPI bus resources are constrained. |
| DRV8305-Q1 | Three-phase gate driver only (no integrated FETs or Hall comparators); requires external MOSFETs and position sensing circuitry. | Used in higher-power (>10-A) or custom-FET applications where thermal management or voltage rating exceeds MCT8316Z's 40-V abs max. | Select when design requires >8-A peak current, >40-V operation, or discrete FET optimization for specific RDS(ON)/Qg trade-offs. |
Compared with MCT8316Z0RQRGFRQ1, MCT8316ZT0RQRGFRQ1 offers identical power stage and protection but removes SPI configurability for lower BOM cost, while DRV8305-Q1 shifts responsibility for FET selection and Hall interface to the system designer-increasing component count but enabling higher voltage/current scalability.
Availability
MCT8316Z0RQRGFRQ1 is available at Aetrix Electronics and suitable for automotive LIDAR scanning, headlight leveling actuation, and small automotive fan control requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for MCT8316Z0RQRGFRQ1 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
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and automotive ICs, with deep expertise in motor control and functional-safety solutions.
The MCT8316Z-Q1 product line delivers integrated, AEC-Q100 qualified BLDC drivers for automotive subsystems demanding compact size, high efficiency, and zero-firmware operation-targeting LIDAR, lighting, HVAC, and chassis applications.
FAQ
What is the maximum PWM frequency supported by the MCT8316Z0RQRGFRQ1?
The MCT8316Z0RQRGFRQ1 supports PWM frequencies up to 200 kHz. This capability enables fine-grained speed control and audible noise reduction in sensitive applications like cabin fans and LIDAR scanners. The device maintains stable commutation and current regulation across this full range, with internal timing circuits designed to minimize jitter and ensure consistent phase alignment.
Does the MCT8316Z0RQRGFRQ1 require external current sense resistors?
No, the MCT8316Z0RQRGFRQ1 does not require external current sense resistors. It integrates high-side current sensing with programmable gain, allowing cycle-by-cycle current limiting and overcurrent protection using only the ILIM pin voltage setting. This eliminates PCB area, power loss, and calibration overhead associated with shunt resistors-reducing total system cost and improving reliability.
How does the MCT8316Z0RQRGFRQ1 handle motor stall conditions?
The MCT8316Z0RQRGFRQ1 implements motor lock protection that detects stalled rotors within 200 ms and triggers latched shutdown. Upon detection, it asserts nFAULT and disables all outputs. Recovery requires a reset pulse on nSLEEP (20–40 µs low pulse) or full power cycle. This prevents thermal damage to windings and MOSFETs during sustained stall events common in headlight leveling actuators.
What Hall sensor types are compatible with the MCT8316Z0RQRGFRQ1?
The MCT8316Z0RQRGFRQ1 supports differential Hall elements, differential analog-output Hall-effect sensors, digital-output Hall-effect sensors, and single-ended analog-output Hall-effect sensors. Its integrated comparators accept input ranges from ±0.1 V to AVDD, with configurable hysteresis and noise filtering via external RC networks on HxP/HxN pins-enabling robust position sensing across diverse automotive sensor implementations.
Can the MCT8316Z0RQRGFRQ1 power external circuitry?
Yes, the MCT8316Z0RQRGFRQ1 can power external circuitry. Its integrated buck regulator delivers up to 200 mA at either 3.3 V or 5.0 V (selected via VSEL_BK pin), and its 3.3-V LDO supplies up to 30 mA. These rails are stable, automotive-qualified, and thermally managed-enabling direct powering of microcontrollers, encoders, CAN transceivers, or other peripheral ICs without additional regulators.
MCT8316Z0RQRGFRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 40-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Motor Type - Stepper:
- Multiphase
- Motor Type - AC, DC:
- Brushless DC (BLDC)
- Function:
- Driver - Fully Integrated, Control and Power Stage
- Output Configuration:
- Half Bridge (3)
- Interface:
- SPI
- Technology:
- NMOS
- Step Resolution:
- -
- Applications:
- -
- Current - Output:
- 8A
- Voltage - Supply:
- 4.5V ~ 35V
- Voltage - Load:
- 4.5V ~ 35V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 40-VQFN (7x5)
MCT8316Z0RQRGFRQ1 FAQ
1.How can I place an order for MCT8316Z0RQRGFRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for MCT8316Z0RQRGFRQ1 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 MCT8316Z0RQRGFRQ1 reliable?
The price and inventory of MCT8316Z0RQRGFRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCT8316Z0RQRGFRQ1 is usually 5 days.
3.What payment methods are accepted for MCT8316Z0RQRGFRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCT8316Z0RQRGFRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCT8316Z0RQRGFRQ1?
MCT8316Z0RQRGFRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCT8316Z0RQRGFRQ1 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 MCT8316Z0RQRGFRQ1?
For technical support, including MCT8316Z0RQRGFRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCT8316Z0RQRGFRQ1 requirements.
6.How does Aetrix verify that MCT8316Z0RQRGFRQ1 is sourced from the original manufacturer or authorized distributors?
All MCT8316Z0RQRGFRQ1 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 MCT8316Z0RQRGFRQ1 meets industry standards.
7.What is the process for return or replacement of MCT8316Z0RQRGFRQ1?
All MCT8316Z0RQRGFRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with MCT8316Z0RQRGFRQ1, 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 MCT8316Z0RQRGFRQ1 part is unused and in its original packaging.
Return procedure for MCT8316Z0RQRGFRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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