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Texas Instruments MCF8315C1VQRGFRQ1
- Part No.:
- MCF8315C1VQRGFRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Motor Drivers, Controllers
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
MCF8315C1VQRGFRQ1.pdf
- Description:
- AUTOMOTIVE, 40V MAX, 4A PEAK, SE
- Quantity:
- Payment:
- Shipping:
Inventory:2,493
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Product details
Overview
MCF8315C1VQRGFRQ1 from Texas Instruments is a sensorless Field-Oriented Control (FOC) BLDC motor driver IC with integrated 40-V, 4-A peak three-phase gate drivers, on-chip buck (3.3 V/5 V, 170 mA) and LDO (3.3 V, 20 mA) regulators, EEPROM-based configuration storage, and built-in current sensing - designed for automotive coolant pumps, seat cooling fans, and two-wheeler fuel pumps.
For engineers reviewing the MCF8315C1VQRGFRQ1 datasheet, MCF8315C1VQRGFRQ1 pinout, MCF8315C1VQRGFRQ1 application, or MCF8315C1VQRGFRQ1 equivalent, key selection considerations include its RGF QFN-40 wettable-flank package, 4.5–35 V operating range, code-free FOC algorithm, 240 mΩ typical RDS(ON)(H+L), and support for analog/PWM/frequency/I²C speed input with 3% speed loop accuracy using internal clock.
Technical Context
The MCF8315C1VQRGFRQ1 implements a fully integrated sensorless FOC engine with offline motor parameter extraction via MPET tool, configurable 5-point speed profiles, windmilling recovery, and anti-voltage surge (AVS) protection. It operates with no external current sense resistors and supports forward resynchronization and reverse drive during coasting.
Its power stage integrates six N-channel MOSFETs in half-bridge topology (RGF package), with programmable slew rate (80–345 V/µs) and dead time (500–850 ns) for EMI mitigation. The device uses dual regulation paths: a buck regulator (selectable 3.3 V/5 V output) and a dedicated 3.3 V LDO, both internally powered from VM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Voltage | 4.5 V to 35 V (40 V absolute max); enables direct connection to 12 V/24 V automotive battery rails without external pre-regulation. |
| Peak Output Current | 4 A per phase; supports continuous operation of small-to-medium BLDC/PMSM motors up to ~150 W at 24 V. |
| RDS(ON) (H+L) | 240 mΩ typ. at TJ = 25°C; reduces conduction losses and thermal stress in high-efficiency motor drives. |
| Speed Loop Accuracy | 3% with internal clock, 1% with external clock reference; ensures precise RPM control under varying load and temperature conditions. |
| Sleep Mode Current | 5 µA max at VVM = 24 V, TA = 25°C; meets ultra-low-power requirements for always-on automotive modules. |
| PWM Frequency Support | Up to 60 kHz; allows optimal switching for low-inductance motors while maintaining thermal efficiency. |
| EEPROM Endurance | 1,000 write cycles at –40°C to +150°C; sufficient for factory programming and field reconfiguration during service life. |
Pinout & Package
Package: 40-pin wettable-flank VQFN (RGF), 7.00 mm × 5.00 mm, exposed thermal pad connected to AGND.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| VM (Pins 9,10,11) | Motor & IC power supply input | Primary high-side rail; accepts 4.5–35 V; requires local 0.1 µF + bulk capacitance to PGND. |
| OUTA/OUTB/OUTC (Pins 13–20) | Three-phase half-bridge outputs | Each phase has high-side + low-side FET pair; drives BLDC motor windings directly without external gate drivers. |
| SPEED/WAKE (Pin 28) | Speed command & wake-up input | Accepts analog voltage (0–3.05 V), PWM (0.01–100 kHz), or frequency signal; triggers wake from sleep mode. |
| nFAULT (Pin 40) | Fault indicator output | Open-drain logic-low active signal; asserts during UVLO/OVP/motor lock/OCP/thermal shutdown; requires external pull-up. |
| DRVOFF (Pin 21) | Driver disable control | High-level input forces all six FETs into Hi-Z state for immediate coasting; critical for fail-safe motor stop. |
| DIR (Pin 34) | Motor direction control | Logic input selects phase sequence (A→B→C or A→C→B); determines clockwise vs. counterclockwise rotation. |
| BRAKE (Pin 35) | Active braking control | High-level input applies short-circuit braking across motor phases; dissipates kinetic energy rapidly. |
| DACOUT1/DACOUT2 (Pins 36,37) | Analog monitoring outputs | Configurable DACs provide real-time feedback of internal variables (e.g., Iq, Id, bus voltage) for diagnostics. |
Key Features
| Feature | Design Value |
|---|---|
| Code-free sensorless FOC | Eliminates firmware development and tuning effort; motor parameters auto-identified via MPET tool and stored in EEPROM. |
| Integrated power regulation | Buck (3.3 V/5 V, 170 mA) + LDO (3.3 V, 20 mA) supply external MCU, sensors, or interface circuitry - no external regulators needed. |
| Self-contained current sensing | Eliminates external shunt resistors and associated PCB area, BOM cost, and measurement errors from trace resistance. |
| Multi-mode speed interface | Supports analog, PWM, frequency, and I²C inputs - simplifies integration across diverse host controller architectures. |
| Comprehensive fault protection | Includes UVLO, OVP, 5-type motor lock detection, OCP, OTW/TSD, and configurable I²C diagnostics - reduces system-level safety validation burden. |
| Wettable-flank QFN package | Enables automated optical inspection (AOI) of solder joints on bottom-side pins - improves manufacturing yield and reliability in automotive production. |
Applications
| Automotive Coolant Pump | Seat Cooling Fan |
|---|---|
Use Scenario: Variable-speed electric coolant pump in ICE or hybrid powertrain systems, responding to engine temperature and cabin demand. IC Role / Device Role / Timing Role: Primary motor controller executing closed-loop FOC to maintain precise flow rate and pressure across wide RPM range (0–8,000 RPM). Use Value: Enables >20% reduction in engine warm-up time and improved thermal management efficiency versus fixed-speed pumps. |
Use Scenario: Compact, quiet fan module embedded in vehicle seat backrest for localized occupant cooling. IC Role / Device Role / Timing Role: Standalone BLDC driver with analog speed input and acoustic optimization via automatic dead-time compensation. Use Value: Achieves <35 dB(A) acoustic noise at full speed while delivering 120 CFM airflow - meets OEM NVH targets. |
| Two-Wheeler Fuel Pump | BLDC Motor Module |
Use Scenario: 12 V fuel delivery system in electric scooters and motorcycles requiring high reliability under vibration and temperature extremes. IC Role / Device Role / Timing Role: Integrated motor driver with AVS protection and 150°C junction-rated operation for sustained duty in under-hood environments. Use Value: Withstands 40 V load-dump transients without external TVS, reducing component count and board space by 30%. |
Use Scenario: Pre-integrated BLDC actuator used in HVAC dampers, sunroof mechanisms, and power trunk latches. IC Role / Device Role / Timing Role: Fully configured, EEPROM-stored FOC solution enabling plug-and-play motor control without host processor involvement. Use Value: Reduces time-to-market by eliminating motor tuning and firmware qualification - ready for ISO 26262 ASIL-B functional safety integration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar BLDC motor driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP6550GQ-Z | 3-phase gate driver only (no FOC, no regulators, no EEPROM); requires external MCU and power supplies. | Used in designs where FOC algorithm is implemented externally; lacks integrated diagnostics and motor parameter learning. | Select when full control flexibility is required and system already includes a capable MCU with FOC library. |
| DRV8323RSRTVRQ1 | 3-phase gate driver + current sense amplifiers; no integrated FOC engine or non-volatile configuration storage. | Targeted at systems using C2000™ MCU for real-time FOC execution; offers higher current capability (6.5 A peak) but larger footprint. | Choose for higher-power motors (>4 A) or when leveraging TI's C2000 ecosystem for advanced motion control algorithms. |
Compared with MP6550GQ-Z and DRV8323RSRTVRQ1, the MCF8315C1VQRGFRQ1 delivers complete, standalone FOC functionality in a single chip - reducing BOM count by ≥7 components, eliminating motor tuning effort, and enabling faster qualification for automotive ASIL-B subsystems.
Availability
MCF8315C1VQRGFRQ1 is available at Aetrix Electronics and suitable for automotive coolant pumps, seat cooling fans, and two-wheeler fuel pumps requiring stable component supply, AEC-Q100 Grade 1 qualification, and long-term lifecycle assurance.
Supply support for MCF8315C1VQRGFRQ1 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 experience in motor control and power management solutions.
The MCF8315C-Q1 product line delivers fully integrated, code-free BLDC/PMSM drivers targeting automotive and industrial applications where rapid deployment, functional safety readiness, and minimal system-level design overhead are critical.
FAQ
What motor types does the MCF8315C1VQRGFRQ1 support?
The MCF8315C1VQRGFRQ1 supports sensorless Field-Oriented Control of three-phase BLDC and PMSM motors with peak currents up to 4 A. It is optimized for 12 V and 24 V automotive systems such as coolant pumps and seat fans. Motor parameters are extracted offline using TI's Motor Parameter Extraction Tool (MPET), and the resulting configuration is stored in on-chip EEPROM for autonomous operation - no host MCU is required for basic speed control.
Does the MCF8315C1VQRGFRQ1 require external current sense resistors?
No, the MCF8315C1VQRGFRQ1 uses built-in current sensing and does not require external shunt resistors. This eliminates associated PCB layout complexity, power loss, and calibration drift. The integrated sensing supports accurate torque and flux control within the FOC algorithm, enabling precise motor response without adding components or board area - a key advantage over gate-driver-only alternatives like the DRV8323RSRTVRQ1.
How is speed commanded to the MCF8315C1VQRGFRQ1?
The MCF8315C1VQRGFRQ1 accepts speed commands via four independent interfaces: analog voltage (0–3.05 V), PWM (0.01–100 kHz), variable frequency square wave (3–32,767 Hz), or I²C register writes. Each mode is selected via SPEED_MODE configuration bits. This flexibility allows seamless integration with microcontrollers, potentiometers, Hall-effect sensors, or legacy analog control systems - making the MCF8315C1VQRGFRQ1 adaptable across diverse vehicle platforms and development stages.
What protection features are integrated into the MCF8315C1VQRGFRQ1?
The MCF8315C1VQRGFRQ1 integrates supply UVLO (4.4 V trip), OVP (configurable 22 V or 34 V), five distinct motor lock detection methods, overcurrent protection, thermal warning/shutdown (OTW/TSD), and anti-voltage surge (AVS) circuitry. Fault status is reported via open-drain nFAULT and ALARM pins, and optional diagnostic details (e.g., fault type, severity) are accessible over I²C - enabling robust system-level failure handling without external supervision logic.
Is the MCF8315C1VQRGFRQ1 qualified for automotive use?
Yes, the MCF8315C1VQRGFRQ1 is AEC-Q100 Grade 1 qualified (–40°C to +125°C ambient), manufactured in IATF 16949-certified facilities, and designed for functional safety compliance up to ASIL-B. Its RGF QFN-40 wettable-flank package supports automated optical inspection, and built-in diagnostics (I²C-accessible fault registers, DACOUT monitoring) facilitate ISO 26262 hardware assessment - confirming suitability for safety-critical automotive applications including engine cooling and cabin comfort systems.
MCF8315C1VQRGFRQ1 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:
- Analog, I2C, PWM
- Technology:
- NMOS
- Step Resolution:
- -
- Applications:
- General Purpose
- Current - Output:
- 4A
- 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)
MCF8315C1VQRGFRQ1 FAQ
1.How can I place an order for MCF8315C1VQRGFRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for MCF8315C1VQRGFRQ1 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 MCF8315C1VQRGFRQ1 reliable?
The price and inventory of MCF8315C1VQRGFRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCF8315C1VQRGFRQ1 is usually 5 days.
3.What payment methods are accepted for MCF8315C1VQRGFRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCF8315C1VQRGFRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCF8315C1VQRGFRQ1?
MCF8315C1VQRGFRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCF8315C1VQRGFRQ1 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 MCF8315C1VQRGFRQ1?
For technical support, including MCF8315C1VQRGFRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCF8315C1VQRGFRQ1 requirements.
6.How does Aetrix verify that MCF8315C1VQRGFRQ1 is sourced from the original manufacturer or authorized distributors?
All MCF8315C1VQRGFRQ1 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 MCF8315C1VQRGFRQ1 meets industry standards.
7.What is the process for return or replacement of MCF8315C1VQRGFRQ1?
All MCF8315C1VQRGFRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with MCF8315C1VQRGFRQ1, 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 MCF8315C1VQRGFRQ1 part is unused and in its original packaging.
Return procedure for MCF8315C1VQRGFRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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