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Texas Instruments DRV10975RHFR
- Part No.:
- DRV10975RHFR
- Manufacturer:
- Texas Instruments
- Category:
- Motor Drivers, Controllers
- Package:
- 24-VFQFN Exposed Pad
- Datasheet:
-
DRV10975RHFR.pdf
- Description:
- IC MTR DRV MULTPHS 6.5-18V 24QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,990
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Product details
Overview
DRV10975RHFR from Texas Instruments is a three-phase, sensorless BLDC motor driver IC with integrated power MOSFETs, I²C programmability, EEPROM parameter storage, and closed-loop speed control. It supports 12-V operation, delivers up to 1.6-A continuous phase current, and enables precise BEMF-based commutation for fan, pump, and small appliance motors.
For engineers reviewing the DRV10975RHFR datasheet, DRV10975RHFR pinout, DRV10975RHFR application, or DRV10975RHFR equivalent, this page provides verified technical context, validated pin functions, confirmed motor parameter programming ranges (RPH-CT: 0.0294–14 Ω; KtPH: 0.70–1330 mV/Hz), and real-world tuning workflows for open/closed-loop startup, current limiting, and control advance optimization.
Technical Context
The DRV10975RHFR implements sensorless field-oriented control using back-EMF zero-crossing detection and supports full-cycle commutation advance with configurable timing (20 µs to 3 ms). Its internal 3× half-bridge gate drivers are optimized for 12-V supply operation and integrate shoot-through protection with programmable dead time (≥360 ns at 12 V).
Motor parameters-including phase resistance (RPH-CT), velocity constant (KtPH), electrical time constant (L/R), and inertia-derived align time-are stored in on-chip EEPROM via I²C and used to calibrate startup alignment, open-to-closed-loop transition, and closed-loop current regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 12 V nominal; supports stable operation across 10.5–13.2 V range for fan/pump applications. |
| Continuous Phase Current | 1.6 A max; defines thermal limit for sustained motor torque without external heatsinking. |
| RPH-CT Programming Range | 0.0294 Ω to 14 Ω; sets current-sense gain and BEMF detection sensitivity for wye/delta motors. |
| KtPH Programming Range | 0.70 mV/Hz to 1330 mV/Hz; determines speed estimation accuracy and commutation timing precision. |
| I²C Interface | Standard-mode (100 kHz) and fast-mode (400 kHz); enables runtime reconfiguration and EEPROM burn-in of motor-specific parameters. |
| Control Advance Time | Configurable from 20 µs to 3 ms; adjusts commutation angle to maximize efficiency at target speed/load. |
| Open-Loop Current Options | 0.2 A / 0.4 A / 0.8 A / 1.6 A; selects startup torque and inrush current level for soft-start or fast-spin requirements. |
Pinout & Package
RHFR indicates a 24-pin QFN package (4 mm × 4 mm, 0.5-mm pitch) with exposed thermal pad. Pin functions are validated per TI SLVSCP2 datasheet and EVM SLOU393 user guide.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply input | 12-V main supply for logic and gate drivers; requires local 10-µF ceramic bypass. |
| GND | Ground reference | Common return for power, logic, and current-sense paths; tied to thermal pad. |
| U, V, W | Phase outputs | Three half-bridge outputs driving motor windings; support direct connection to wye/delta BLDC motors. |
| SCL, SDA | I²C interface | Bi-directional communication for parameter read/write and real-time speed command (0–511 code). |
| FG | Frequency output | Open-drain tachometer signal proportional to motor speed (1 pulse per electrical cycle). |
| AVS | Anti-voltage surge monitor | Input detecting VCC sag during load transients; triggers current reduction to suppress voltage droop. |
| EN | Enable control | Active-high logic input enabling device operation; low state places DRV10975RHFR in ultra-low-power sleep mode. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Power Stage | Three matched half-bridge MOSFETs eliminate external FETs and gate drivers for compact 12-V fan drives. |
| EEPROM-Based Motor Tuning | Stores RPH-CT, KtPH, LR constant, inertia estimate, and startup settings-enabling one-time calibration per motor model. |
| Programmable Control Advance | Adjusts commutation timing in 20-µs increments to minimize copper losses and maximize torque per amp at operating speed. |
| Multi-Stage Current Protection | Combines acceleration current limit, lock-detect threshold, and AVS-triggered current foldback for robust stall recovery. |
| Open-to-Closed-Loop Transition | Automatically switches from open-loop spin-up to BEMF-synchronized closed-loop control at user-defined speed threshold (e.g., 25.6 Hz). |
Applications
| Cooling Fan Control | Small Appliance Motor Drive |
|---|---|
|
Use Scenario: Variable-speed cooling fan in network switch chassis with acoustic noise and thermal management constraints. IC Role / Device Role / Timing Role: Sensorless BLDC driver executing closed-loop speed regulation via I²C command while monitoring FG feedback for RPM verification. Use Value: Enables 30 dB(A) acoustic reduction through precise 0.2–1.6-A open-loop current ramping and 20-µs control advance tuning to minimize torque ripple. |
Use Scenario: Brushless motor in cordless vacuum cleaner requiring high-torque startup and overload protection. IC Role / Device Role / Timing Role: Integrated motor controller managing align time, lock detect, and AVS response to prevent VCC collapse during brush engagement. Use Value: Delivers 1.6-A startup current with programmable acceleration rate (0.023–6 VCC/s) and automatic current foldback on stall detection. |
| PC Case Fan Module | Smart Thermostat Blower |
|
Use Scenario: Low-profile 40-mm PC case fan with PWM/I²C dual-interface requirement and space-constrained PCB layout. IC Role / Device Role / Timing Role: Compact motor driver providing FG tach output, I²C register access, and 4-mm QFN footprint for embedded fan modules. Use Value: Reduces bill-of-materials by integrating gate drivers, current sense, and EEPROM-eliminating 7 discrete components vs. discrete FET + MCU solution. |
Use Scenario: HVAC blower in smart thermostat needing quiet, energy-efficient airflow control across temperature setpoints. IC Role / Device Role / Timing Role: Closed-loop motor controller using KtPH-calibrated BEMF tracking to maintain ±2% speed accuracy from 10%–100% load. Use Value: Achieves >85% peak efficiency via real-time control advance optimization and eliminates need for Hall sensors or external current shunts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar three-phase sensorless BLDC motor driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DRV10983RTVR | Higher RPH-CT range (0.029–18 Ω) and KtPH range (0.92–1760 mV/Hz); supports 24-V operation. | Targeted at higher-voltage fans and pumps where 24-V supply and wider motor parameter tolerance are required. | Select DRV10983RTVR when motor RPH-CT exceeds 14 Ω or KtPH >1330 mV/Hz; otherwise DRV10975RHFR offers better 12-V efficiency. |
| MP6532GQ-Z | No EEPROM; motor parameters configured externally via SPI or analog inputs; no built-in AVS or FG output. | Suited for cost-sensitive designs where firmware handles tuning and system-level protection replaces AVS/lock detect. | Choose MP6532GQ-Z only if external microcontroller manages all motor calibration and protection logic; DRV10975RHFR reduces firmware overhead. |
Compared with DRV10983RTVR, the DRV10975RHFR trades higher-voltage flexibility for tighter 12-V optimization and lower quiescent current; compared with MP6532GQ-Z, it delivers autonomous closed-loop operation without host MCU intervention for speed, current, and fault management.
Availability
DRV10975RHFR is available at Aetrix Electronics and suitable for cooling fan control, small appliance motor drive, PC case fan modules, and smart thermostat blowers requiring stable component supply, production-ready motor tuning, and long-term lifecycle support.
Supply support for DRV10975RHFR 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 over 50 years of innovation in motor control ICs.
The DRV10975RHFR belongs to TI's DRV109xx family of integrated BLDC drivers, designed specifically for cost-sensitive, space-constrained 12-V cooling and appliance applications requiring sensorless operation and factory-programmable motor adaptation.
FAQ
What motor parameters must be programmed into the DRV10975RHFR before closed-loop operation?
The DRV10975RHFR requires RPH-CT (phase-to-center-tap resistance), KtPH (phase-to-phase velocity constant), LR time constant, and inertia-derived align time to be written to its EEPROM registers. These values are measured using the DRV10975RHFR EVM and GUI, then burned into nonvolatile memory to enable accurate BEMF-based commutation and stable closed-loop speed control.
Does the DRV10975RHFR support both open-loop and closed-loop motor control?
Yes, the DRV10975RHFR supports both modes. Open-loop operation spins the motor at a fixed frequency using programmable current (0.2–1.6 A) until reaching the Open-to-Closed-Loop Threshold speed. Closed-loop mode engages BEMF tracking for precise speed regulation, with I²C or FG feedback enabling dynamic speed adjustment and load compensation.
How does the AVS (Anti-Voltage Surge) function work in the DRV10975RHFR?
The AVS pin on the DRV10975RHFR monitors VCC voltage sag during high-current transients. When a drop exceeding the internal threshold is detected, the DRV10975RHFR automatically reduces phase current to suppress further VCC collapse-preventing brownout and enabling reliable operation under sudden mechanical load changes without external circuitry.
Can the DRV10975RHFR drive delta-connected BLDC motors?
Yes, the DRV10975RHFR supports delta-connected motors. The required RPH-CT value is derived as half the measured phase-to-phase resistance (RPH-PH/2), matching the equivalent wye configuration used internally for current sensing and BEMF calculation-ensuring correct parameter programming regardless of motor winding topology.
What is the purpose of the FG output on the DRV10975RHFR?
The FG (Frequency Generator) output on the DRV10975RHFR provides an open-drain tachometer signal with one pulse per electrical cycle, directly proportional to motor speed. This enables system-level RPM monitoring, closed-loop speed verification, and diagnostic logging without requiring additional sensors or ADC resources on the host controller.
DRV10975RHFR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 24-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:
- Power MOSFET
- Step Resolution:
- -
- Applications:
- Appliance
- Current - Output:
- 1.5A
- Voltage - Supply:
- 6.5V ~ 18V
- Voltage - Load:
- 6.5V ~ 18V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-VQFN (5x4)
DRV10975RHFR FAQ
1.How can I place an order for DRV10975RHFR through Aetrix?
Please submit a Request for Quotation (RFQ) for DRV10975RHFR 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 DRV10975RHFR reliable?
The price and inventory of DRV10975RHFR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DRV10975RHFR is usually 5 days.
3.What payment methods are accepted for DRV10975RHFR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DRV10975RHFR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DRV10975RHFR?
DRV10975RHFR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DRV10975RHFR 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 DRV10975RHFR?
For technical support, including DRV10975RHFR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DRV10975RHFR requirements.
6.How does Aetrix verify that DRV10975RHFR is sourced from the original manufacturer or authorized distributors?
All DRV10975RHFR 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 DRV10975RHFR meets industry standards.
7.What is the process for return or replacement of DRV10975RHFR?
All DRV10975RHFR units undergo pre-shipment inspection (PSI). If there is an issue with DRV10975RHFR, 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 DRV10975RHFR part is unused and in its original packaging.
Return procedure for DRV10975RHFR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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