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Texas Instruments MCF8315C1VRRYR
- Part No.:
- MCF8315C1VRRYR
- Manufacturer:
- Texas Instruments
- Category:
- Motor Drivers, Controllers
- Package:
- 32-QFN Exposed Pad
- Datasheet:
-
MCF8315C1VRRYR.pdf
- Description:
- 40V MAX, 4A PEAK, SENSORLESS FIE
- Quantity:
- Payment:
- Shipping:
Inventory:1,407
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Product details
Overview
MCF8315C1VRRYR from Texas Instruments is a sensorless Field-Oriented Control (FOC) integrated FET BLDC motor driver in a 32-pin WQFN package, delivering 4A peak output current with 250mΩ typical RDS(ON)(H+L), operating from 4.5–35V, and supporting analog/PWM/frequency/I²C speed inputs for residential fans, air purifiers, and CPAP machines.
For engineers reviewing the MCF8315C1VRRYR datasheet, MCF8315C1VRRYR pinout, MCF8315C1VRRYR application, or MCF8315C1VRRYR equivalent, key selection considerations include its code-free FOC algorithm, built-in 3.3V/20mA LDO and 3.3V/5V/170mA buck regulator, EEPROM-based configuration storage, integrated current sensing (no external shunts), and comprehensive protection suite including UVLO, OVP, thermal shutdown, and motor lock detection.
Technical Context
The MCF8315C1VRRYR implements a fully integrated three-phase BLDC driver with embedded sensorless FOC firmware, eliminating host MCU dependency for motor control. It features dual regulation paths - a 3.3V/20mA LDO and a programmable buck regulator (3.3V/5V, up to 170mA) - both powered from VM, enabling self-contained operation of external circuitry.
Its real-time control architecture includes configurable speed profiles (5-point), windmilling recovery via forward resynchronization and reverse drive, automatic dead-time compensation for acoustic optimization, and optional I²C-based fault diagnostics. The device supports external clock reference (8–1024 kHz) for ±1% speed loop accuracy and integrates six MOSFETs with spread-spectrum EMI mitigation and slew-rate control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Voltage | 4.5 V to 35 V (40 V absolute max); enables direct use with 12 V and 24 V battery/bus systems without external pre-regulation. |
| Peak Output Current | 4 A (RRY package); sufficient for mid-power BLDC motors in fans, pumps, and medical airflow devices. |
| RDS(ON)(H+L) | 250 mΩ typ. at TJ = 25°C; reduces conduction loss and thermal stress in compact fan modules. |
| Sleep Mode Current | 5 µA max at VVM = 24 V, TA = 25°C; supports ultra-low-power standby in always-on appliances. |
| Speed Loop Accuracy | 1% with external clock reference; critical for precise airflow control in CPAP and HVAC applications. |
| PWM Frequency Support | Up to 60 kHz; allows low-inductance motor support and reduced audible noise in high-speed fans. |
| Integrated Regulators | Built-in 3.3 V/20 mA LDO + 3.3 V/5 V/170 mA buck; powers microcontrollers, sensors, or displays without external regulators. |
Pinout & Package
Package: 32-pin WQFN (6.00 mm × 4.00 mm) with wettable flanks and exposed thermal pad connected to AGND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUTA / OUTB / OUTC | Three-phase half-bridge outputs | Drive BLDC motor windings directly; each pair (e.g., OUTA high-side + low-side) forms one leg of the inverter. |
| VM | Main power supply input | Connects to 4.5–35 V motor supply; bypassed to PGND with 0.1 µF + bulk capacitor for stability. |
| DRVOFF | Output disable control | Logic-high forces all six MOSFETs into high-impedance (Hi-Z) coast mode - critical for safe emergency stop. |
| SPEED/WAKE | Speed command & wake-up input | Accepts analog voltage (0–3 V), PWM (0.01–100 kHz), or frequency signal; also triggers exit from sleep mode. |
| nFAULT | Fault indicator output | Open-drain logic-low during fault (UVLO, OCP, OTW, etc.); requires external pull-up for system-level interrupt signaling. |
| SDA / SCL | I²C interface | Enable runtime configuration, diagnostics, and speed commands; support standard/fast-mode timing per JEDEC JS-001. |
| DACOUT | Analog monitoring output | Provides real-time internal variable feedback (e.g., current, speed error) for debugging or closed-loop supervision. |
Key Features
| Feature | Design Value |
|---|---|
| Code-free sensorless FOC | Eliminates need for host MCU firmware development; motor parameters auto-measured offline via MPET tool. |
| Integrated current sensing | Removes requirement for external shunt resistors, reducing BOM cost, PCB area, and thermal design complexity. |
| Configurable 5-point speed profile | Enables ramp-up/ramp-down, dwell, and multi-stage airflow control - ideal for quiet fan sequencing in living environments. |
| Anti-voltage surge (AVS) protection | Prevents false triggering during load dump or inductive kickback, improving reliability in automotive blower applications. |
| Spread spectrum & slew rate control | Reduces EMI peak emissions by >10 dB; meets Class B EMC requirements without added filtering components. |
| EEPROM-based configuration storage | Allows one-time setup and autonomous operation; no boot-time host initialization required for production deployment. |
Applications
| Residential Ceiling Fan | Air Purifier Blower |
|---|---|
|
Use Scenario: Variable-speed ceiling fan with quiet start/stop and energy-efficient low-RPM operation. IC Role / Device Role / Timing Role: Integrated FOC driver executing real-time commutation, speed regulation, and acoustic optimization without MCU intervention. Use Value: Achieves <25 dB(A) acoustic performance via automatic dead-time compensation and 60 kHz PWM support, meeting premium home appliance noise standards. |
Use Scenario: Compact air purifier requiring consistent airflow across filter life with minimal audible noise. IC Role / Device Role / Timing Role: Sensorless BLDC controller managing speed based on particulate sensor feedback via I²C or analog input. Use Value: Built-in buck regulator powers the sensor and display; EEPROM stores calibrated airflow curves, eliminating field recalibration. |
| CPAP Machine Air Pump | Washer Drain Pump |
|
Use Scenario: Medical-grade continuous positive airway pressure device needing precise, ripple-free airflow delivery. IC Role / Device Role / Timing Role: High-accuracy speed controller using external clock reference (±1%) to maintain prescribed pressure across varying mask leak conditions. Use Value: Thermal warning/shutdown and motor lock detection ensure fail-safe operation; nFAULT pin signals faults to host safety monitor. |
Use Scenario: High-reliability drain pump in washing machines subject to frequent start-stop cycles and water ingress risk. IC Role / Device Role / Timing Role: Robust motor driver with UVLO, OVP, and five motor lock detection algorithms to prevent overheating during clogged drain events. Use Value: 40 V abs max rating tolerates 24 V bus transients; wettable-flank QFN enables automated optical inspection (AOI) for high-yield 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 |
|---|---|---|---|
| MP6550GQ-Z | 3-phase gate driver only (no FOC, no regulators, no EEPROM); requires external MCU, shunt, and power rails. | Targeted at designs with existing motor control firmware and discrete power stage; lacks integrated intelligence. | Select when full control flexibility is needed and BOM cost is secondary to algorithm customization. |
| DRV10983ZRTVR | Integrated FOC driver but limited to 2 A peak; no buck regulator; uses internal LDO only (3.3 V/10 mA). | Suitable for smaller fans (<15 W); insufficient for CPAP or washer pump loads requiring >3 A sustained current. | Choose for space-constrained, low-power consumer fans where 4 A capability and dual regulators are unnecessary. |
Compared with MP6550GQ-Z and DRV10983ZRTVR, the MCF8315C1VRRYR delivers higher integration (FOC + buck + LDO + EEPROM), greater current capacity (4 A), and broader voltage range (4.5–35 V), making it optimal for mid-power, self-contained BLDC systems demanding rapid time-to-market and robust protection.
Availability
MCF8315C1VRRYR is available at Aetrix Electronics and suitable for residential fan modules, air purifier blowers, and CPAP machine air pumps requiring stable component supply, long-term lifecycle assurance, and automotive-grade reliability under 125°C ambient conditions.
Supply support for MCF8315C1VRRYR 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 power management technologies, with decades of expertise in motor control ICs and industrial-grade reliability.
The MCF8315C1VRRYR belongs to TI's Code-Free Motor Control portfolio, designed specifically to accelerate development of intelligent, sensorless BLDC systems for consumer, medical, and industrial airflow applications - eliminating firmware development while maintaining precision and safety.
FAQ
What is the maximum motor voltage supported by the MCF8315C1VRRYR?
The MCF8315C1VRRYR supports a recommended operating voltage range of 4.5 V to 35 V on the VM pin, with an absolute maximum rating of 40 V. This allows direct connection to common 12 V and 24 V DC bus systems used in fans, pumps, and medical equipment without external voltage conditioning.
Does the MCF8315C1VRRYR require external current sense resistors?
No, the MCF8315C1VRRYR does not require external current sense resistors. It implements built-in current sensing using internal MOSFET RDS(ON) monitoring, enabling accurate phase current estimation and overcurrent protection without adding shunt resistors, PCB area, or thermal dissipation concerns.
How is motor configuration stored and retained on the MCF8315C1VRRYR?
The MCF8315C1VRRYR includes customer-configurable non-volatile EEPROM that retains motor parameters, speed profiles, protection thresholds, and interface settings. Data is retained for 10 years at junction temperatures up to 150°C, allowing the MCF8315C1VRRYR to operate autonomously after initial programming without host MCU involvement.
Can the MCF8315C1VRRYR drive motors in both forward and reverse directions?
Yes, the MCF8315C1VRRYR supports bidirectional operation via the DIR pin. When DIR is logic high, the phase sequence is OUTA → OUTB → OUTC; when low, it is OUTA → OUTC → OUTB. Reverse drive is also enabled during windmilling recovery, allowing controlled reversal to restart stalled rotors.
What protection features are integrated into the MCF8315C1VRRYR?
The MCF8315C1VRRYR integrates supply UVLO/OVP, motor lock detection (5 types), overcurrent protection (OCP), thermal warning and shutdown (OTW/TSD), anti-voltage surge (AVS), and fault indication via nFAULT and ALARM pins. Optional I²C-based diagnostics provide detailed fault cause reporting for system-level error handling.
MCF8315C1VRRYR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 32-QFN 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 32-WQFN (6x4)
MCF8315C1VRRYR FAQ
1.How can I place an order for MCF8315C1VRRYR through Aetrix?
Please submit a Request for Quotation (RFQ) for MCF8315C1VRRYR 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 MCF8315C1VRRYR reliable?
The price and inventory of MCF8315C1VRRYR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCF8315C1VRRYR is usually 5 days.
3.What payment methods are accepted for MCF8315C1VRRYR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCF8315C1VRRYR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCF8315C1VRRYR?
MCF8315C1VRRYR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCF8315C1VRRYR 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 MCF8315C1VRRYR?
For technical support, including MCF8315C1VRRYR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCF8315C1VRRYR requirements.
6.How does Aetrix verify that MCF8315C1VRRYR is sourced from the original manufacturer or authorized distributors?
All MCF8315C1VRRYR 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 MCF8315C1VRRYR meets industry standards.
7.What is the process for return or replacement of MCF8315C1VRRYR?
All MCF8315C1VRRYR units undergo pre-shipment inspection (PSI). If there is an issue with MCF8315C1VRRYR, 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 MCF8315C1VRRYR part is unused and in its original packaging.
Return procedure for MCF8315C1VRRYR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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