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Texas Instruments MCT8316A1VQRGFRQ1
- Part No.:
- MCT8316A1VQRGFRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Motor Drivers, Controllers
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
MCT8316A1VQRGFRQ1.pdf
- Description:
- Automotive, 40V max, 8A peak, se
- Quantity:
- Payment:
- Shipping:
Inventory:2,865
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Product details
Overview
MCT8316A1VQRGFRQ1 from Texas Instruments is an AEC-Q100 Grade-1 qualified, integrated FET three-phase BLDC motor driver with sensorless trapezoidal control, 4.5–35 V operation, 8 A peak output current, 95 mΩ total RDS(ON), and support for up to 3 kHz electrical frequency. It enables fast startup (<50 ms) and deceleration (<150 ms) in automotive fuel pumps and headrest modules.
For engineers reviewing the MCT8316A1VQRGFRQ1 datasheet, MCT8316A1VQRGFRQ1 pinout, MCT8316A1VQRGFRQ1 application, or MCT8316A1VQRGFRQ1 equivalent, key selection factors include integrated current sensing (no external shunt), dual regulators (3.3 V/20 mA LDO + 3.3/5.0 V/170 mA buck), I²C-configurable closed-loop speed control, and wettable flank VQFN-40 packaging for automated optical inspection.
Technical Context
The MCT8316A1VQRGFRQ1 implements a code-free, sensorless trapezoidal commutation engine with configurable 120° or 150° modulation, active demagnetization, windmilling recovery via forward resynchronization and reverse drive, and analog/PWM/frequency/I²C speed command inputs. Its internal EEPROM stores register settings for standalone operation after configuration.
It integrates six N-channel MOSFETs in three half-bridges (40 V abs max), charge pump (CP/CPH/CPL), buck regulator (SW_BK/FB_BK/GND_BK), and dual LDOs (DVDD/AVDD). Protection includes UVLO (4.4 V), OVP (34 V), overcurrent (16 A typ), thermal warning (145 °C), and five motor lock detection methods - all signaled via open-drain nFAULT.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Voltage | 4.5–35 V (40 V absolute max); supports 12–24 V automotive systems with robust overvoltage protection. |
| Peak Output Current | 8 A per phase; enables direct driving of mid-power BLDC motors without external gate drivers or discrete FETs. |
| RDS(ON) (HS+LS) | 95 mΩ at 25 °C; minimizes conduction loss and thermal stress in high-efficiency motor control. |
| Speed Input Flexibility | Accepts analog (0–3 V), PWM (0.01–100 kHz), frequency (3–32.767 kHz), or I²C commands - no external signal conditioning required. |
| Regulator Outputs | Built-in 3.3 V/20 mA LDO (AVDD) and selectable 3.3/5.0 V/170 mA buck (VBK); powers internal logic and external peripherals from VM rail. |
| Sleep Current | 3 µA max at 24 V and 25 °C; enables ultra-low-power standby in always-on automotive modules. |
| Thermal Performance | RθJA = 25.7 °C/W (VQFN-40); exposed thermal pad tied to AGND improves heat dissipation in compact layouts. |
Pinout & Package
Package: Wettable flank VQFN-40 (7.00 mm × 5.00 mm), RoHS-compliant, with exposed thermal pad connected to AGND for enhanced thermal management and solder joint inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VM (Pins 9,10,11) | Motor & device power supply input | Primary high-current rail (4.5–35 V); bypassed with 0.1 µF + bulk capacitor; feeds all power stages and regulators. |
| OUTA/OUTB/OUTC (Pins 13–20) | Three-phase half-bridge outputs | Each phase uses two pins (e.g., OUTA = Pins 13 & 14) for low-inductance, high-current connection to motor windings. |
| PGND (Pins 12,15,18) | Power ground return | Dedicated low-impedance path for motor current; must be separated from DGND/AGND in layout to avoid noise coupling. |
| DIR (Pin 34) / BRAKE (Pin 35) | Direction & braking control inputs | Logic-level inputs (0–5.5 V) enabling bidirectional rotation and dynamic braking; pulled low via 10 kΩ if unused. |
| nFAULT (Pin 40) / FG (Pin 29) | Fault indicator & tachometer outputs | Open-drain signals requiring external 3.3–5 V pull-up; nFAULT asserts low on fault; FG outputs motor speed pulses. |
| SDA/SCL (Pins 30,31) | I²C interface | Standard/Fast-mode (100/400 kHz) bidirectional bus for configuration, diagnostics, and real-time monitoring. |
| DRVOFF (Pin 21) | Output disable control | Hi-Z all six MOSFETs instantly - enables coasting without braking or short-circuiting windings. |
Key Features
| Feature | Design Value |
|---|---|
| Code-free sensorless trapezoidal control | Eliminates firmware development and tuning effort; supports 120°/150° modulation for acoustic optimization in cabin applications. |
| Integrated current sensing | No external shunt resistor needed - reduces BOM cost, PCB area, and measurement error from trace resistance. |
| Configurable closed-loop speed control | Enables precise RPM regulation using internal DACOUT feedback or external encoder input - critical for fuel pump flow consistency. |
| EEPROM-based configuration storage | All register settings persist across power cycles; allows factory-programmed behavior and eliminates boot-time host initialization. |
| Multi-level protection suite | Includes motor lock detection (5 types), thermal warning/shutdown (145/175 °C), and programmable OCP with 4 deglitch options - ensures system safety in harsh environments. |
| EMI mitigation features | Programmable slew rate (80–280 V/µs) and spread spectrum reduce conducted/radiated emissions - simplifies EMC compliance testing. |
Applications
| Automotive Fuel Pumps | Headrest Positioning Systems |
|---|---|
|
Use Scenario: High-reliability 12–24 V fuel delivery in ICE and hybrid vehicles, operating continuously under wide temperature (-40 to 125 °C) and vibration conditions. IC Role / Device Role / Timing Role: Integrated BLDC driver executing sensorless trapezoidal commutation with <50 ms startup and anti-surge voltage protection. Use Value: Eliminates need for separate MCU, gate drivers, and current sense circuitry - reducing system size, cost, and qualification effort for AEC-Q100 Grade-1 compliance. |
Use Scenario: Quiet, smooth adjustment of automotive seat headrests using low-inductance BLDC motors with precise position and speed control. IC Role / Device Role / Timing Role: Motor controller providing 150° modulation, active demagnetization, and variable-speed analog/PWM input for responsive user interface. Use Value: Reduces audible noise and torque ripple versus 120° mode; built-in DACOUT enables real-time motor parameter monitoring without external ADC. |
| Brushless DC Motor Modules | Two-Wheeler Electric Powertrain |
|
Use Scenario: Compact, self-contained BLDC actuation modules for HVAC dampers, throttle valves, or auxiliary pumps in chassis electronics. IC Role / Device Role / Timing Role: Single-chip solution integrating power stage, regulators, protection, and configurable control - operates stand-alone after EEPROM programming. Use Value: Enables rapid module design with minimal external components; buck/LDO outputs power microcontrollers or sensors, reducing system-level power architecture complexity. |
Use Scenario: Motor control in electric scooters and e-bikes where space, weight, and thermal constraints demand highly integrated solutions. IC Role / Device Role / Timing Role: High-efficiency driver supporting up to 3 kHz electrical frequency and fast deceleration (<150 ms) for regenerative braking and responsive throttle response. Use Value: 95 mΩ RDS(ON) and 3 µA sleep current extend battery runtime; wettable flank VQFN ensures reliable reflow and AOI inspection in high-volume manufacturing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar BLDC motor driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DRV8305-Q1 | Lower peak current (3.5 A), no integrated buck regulator, requires external current sense resistors, no EEPROM storage. | Targeted at lower-power automotive fans or small actuators; lacks standalone operation capability and high-frequency support (max 1 kHz). | Select when cost sensitivity outweighs integration needs and motor power is ≤200 W. |
| MCT8316Z-Q1 | Same core architecture but non-wettable flank VQFN package; identical electrical specs, pinout, and feature set. | Used where AOI inspection of solder joints is not required; same functional performance but less suitable for automated optical verification. | Choose MCT8316A1VQRGFRQ1 specifically when wettable flank packaging is mandated for process control or quality assurance. |
Compared with DRV8305-Q1 and MCT8316Z-Q1, the MCT8316A1VQRGFRQ1 uniquely combines 8 A peak drive, integrated buck/LDO, EEPROM-based configuration, and wettable flank packaging - making it optimal for high-reliability, space-constrained automotive BLDC modules requiring zero-firmware deployment and full production traceability.
Availability
MCT8316A1VQRGFRQ1 is available at Aetrix Electronics and suitable for automotive fuel pumps, headrest control modules, and BLDC motor modules requiring stable component supply, AEC-Q100 qualification, and long-term lifecycle support.
Supply support for MCT8316A1VQRGFRQ1 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 decades of automotive qualification expertise and rigorous AEC-Q100 validation processes.
The MCT8316A-Q1 product line delivers highly integrated, sensorless BLDC drivers targeting automotive subsystems demanding high reliability, fast response, and minimal external components - especially in fuel delivery, comfort, and electrified mobility applications.
FAQ
What is the maximum electrical frequency supported by the MCT8316A1VQRGFRQ1?
The MCT8316A1VQRGFRQ1 supports up to 3 kHz electrical frequency, enabling high-speed BLDC operation in applications such as fuel pumps and cooling fans. This specification is validated across the full AEC-Q100 Grade-1 temperature range (-40 °C to 125 °C ambient), and the device maintains stable commutation without external rotor position sensors.
Does the MCT8316A1VQRGFRQ1 require an external current sense resistor?
No, the MCT8316A1VQRGFRQ1 does not require an external current sense resistor. It implements integrated current sensing using the MOSFET RDS(ON) - eliminating BOM cost, PCB area, and accuracy drift from external components. This feature is confirmed in the device description and electrical characteristics section of the official datasheet.
How is motor direction controlled on the MCT8316A1VQRGFRQ1?
Motor direction is controlled via the DIR pin (Pin 34): logic low selects the OUT A → OUT B → OUT C sequence, while logic high selects OUT A → OUT C → OUT B. The pin accepts 0–5.5 V inputs and must be pulled to PGND via a 10 kΩ resistor if unused - a requirement explicitly stated in the Pin Functions table.
What are the key thermal metrics for the MCT8316A1VQRGFRQ1 in its VQFN package?
The MCT8316A1VQRGFRQ1 in the wettable flank VQFN-40 package has RθJA = 25.7 °C/W, RθJC(bot) = 2.0 °C/W, and RθJB = 7.3 °C/W. These values reflect optimized thermal performance enabled by the exposed thermal pad, which must be connected to AGND per layout guidelines to achieve rated junction-to-board conduction.
Can the MCT8316A1VQRGFRQ1 operate without an external microcontroller?
Yes, the MCT8316A1VQRGFRQ1 can operate stand-alone after initial configuration. All control registers - including startup behavior, modulation type, and protection thresholds - are stored in non-volatile EEPROM. Once programmed, the device executes sensorless trapezoidal control autonomously using analog, PWM, or frequency speed inputs without host intervention.
MCT8316A1VQRGFRQ1 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:
- -
- Technology:
- NMOS
- Step Resolution:
- -
- Applications:
- General Purpose
- 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)
MCT8316A1VQRGFRQ1 FAQ
1.How can I place an order for MCT8316A1VQRGFRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for MCT8316A1VQRGFRQ1 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 MCT8316A1VQRGFRQ1 reliable?
The price and inventory of MCT8316A1VQRGFRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCT8316A1VQRGFRQ1 is usually 5 days.
3.What payment methods are accepted for MCT8316A1VQRGFRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCT8316A1VQRGFRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCT8316A1VQRGFRQ1?
MCT8316A1VQRGFRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCT8316A1VQRGFRQ1 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 MCT8316A1VQRGFRQ1?
For technical support, including MCT8316A1VQRGFRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCT8316A1VQRGFRQ1 requirements.
6.How does Aetrix verify that MCT8316A1VQRGFRQ1 is sourced from the original manufacturer or authorized distributors?
All MCT8316A1VQRGFRQ1 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 MCT8316A1VQRGFRQ1 meets industry standards.
7.What is the process for return or replacement of MCT8316A1VQRGFRQ1?
All MCT8316A1VQRGFRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with MCT8316A1VQRGFRQ1, 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 MCT8316A1VQRGFRQ1 part is unused and in its original packaging.
Return procedure for MCT8316A1VQRGFRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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