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Texas Instruments DRV10975ZRHFR
- Part No.:
- DRV10975ZRHFR
- Manufacturer:
- Texas Instruments
- Category:
- Motor Drivers, Controllers
- Package:
- 24-VFQFN Exposed Pad
- Datasheet:
-
DRV10975ZRHFR.pdf
- Description:
- IC MTR DRV MULTPHS 6.5-18V 24QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,845
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Product details
Overview
DRV10975ZRHFR from Texas Instruments is a 12-V, three-phase, sensorless BLDC motor driver IC with integrated power MOSFETs, delivering 1.5-A continuous winding current and featuring a proprietary BEMF-based 180° sinusoidal commutation scheme for ultra-low acoustic noise. It includes an integrated buck/linear step-down regulator (configurable for 3.3 V or 5 V output), I²C interface, dedicated SPEED/DIR/FG pins, and operates in sleep mode with only 80 µA supply current - designed for appliance fan and HVAC blower applications.
For engineers reviewing the DRV10975ZRHFR datasheet, DRV10975ZRHFR pinout, DRV10975ZRHFR application, or DRV10975ZRHFR equivalent, key selection considerations include its 24-pin HTSSOP package with exposed thermal pad, 6.5–18 V input range, 250 mΩ total H+L rDS(on), UVLO/overcurrent/thermal protection, and flexible analog/PWM/speed control without external sense resistors.
Technical Context
The DRV10975ZRHFR implements a sensorless back-EMF estimation algorithm with configurable hysteresis (50 mV) to enable smooth 180° sinusoidal drive, minimizing torque ripple and audible noise. Its integrated charge pump (VCP/CPP/CPN) supports high-side gate drive across the full 6.5–18 V input range without external components.
It features dual regulation architecture: a hysteretic buck converter (47 µH inductor + 10 µF capacitor) for efficient 3.3 V/5 V output up to 100 mA, or linear-mode operation (39 Ω resistor + 10 µF capacitor) when external power delivery is unnecessary. Sleep mode disables the regulator entirely, reducing quiescent current to 80 µA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 6.5 V to 18 V - supports wide 12-V system tolerances including automotive battery transients and industrial rail variations. |
| Continuous Output Current | 1.5 A winding current - sufficient for mid-power fans and blowers without external heatsinking under typical thermal conditions. |
| Total rDS(on) | 250 mΩ (H+L) - enables low conduction loss and >39 W output capability at 12 V with minimal self-heating. |
| Sleep Mode Supply Current | 80 µA - enables always-on systems (e.g., smart HVAC controls) to maintain motor readiness with negligible standby power draw. |
| Regulator Output Options | 3.3 V or 5 V selectable via VregSel register - powers internal logic and can supply external microcontrollers or sensors directly. |
| Protection Features | UVLO (5.2–6.5 V rise threshold), overcurrent limit (2–4 A), thermal shutdown (150 °C), lock detection, and voltage surge protection - ensures robust operation in unattended equipment. |
| Interface Options | I²C (400 kHz), analog SPEED (0.1–3.3 V), PWM SPEED (1–100 kHz), DIR, FG - eliminates need for MCU firmware complexity in basic speed/direction control. |
Pinout & Package
DRV10975ZRHFR is housed in a thermally enhanced 24-pin HTSSOP (PWP) package (7.80 mm × 6.40 mm) with exposed thermal pad soldered to PCB ground for optimal heat dissipation. Junction-to-board thermal resistance is 14.8 °C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pins 23, 24) | Power supply input | Primary 6.5–18 V supply for motor drive and internal circuitry; dual pins reduce IR drop and improve current sharing. |
| U/V/W (Pins 17–22) | Motor phase outputs | Three half-bridge outputs driving BLDC motor windings; each pair (U1/U2, V1/V2, W1/W2) paralleled for higher current capability. |
| PGND (Pins 15, 16) | Power ground return | Low-impedance return path for motor current; dual pins minimize ground bounce during switching transitions. |
| SPEED (Pin 13) | Speed command input | Accepts analog voltage (0.1–3.3 V) or PWM (1–100 kHz); internal 55 kΩ pulldown enables safe zero-speed default in sleep mode. |
| DIR (Pin 14) | Direction control input | Digital input (0 V = CW, >2.2 V = CCW); level-shifted to tolerate 3.3 V logic even with 12 V VCC supply. |
| FG (Pin 12) | Tachometer feedback output | Open-drain pulse output (5 mA sink capability) with frequency proportional to motor RPM; compatible with standard microcontroller counters. |
| SCL/SDA (Pins 10, 11) | I²C communication interface | Standard 400 kHz I²C bus for real-time register access, EEPROM programming, and diagnostic readback of BEMF/current/voltage data. |
| VREG (Pin 6) | Step-down regulator output | Feedback node for buck regulator; sets 5 V (VregSel=0) or 3.3 V (VregSel=1); supplies internal circuits and optional external loads ≤100 mA. |
| V3P3 (Pin 9) | 3.3 V LDO output | Stable 3.3 V supply (±0.3 V) capable of sourcing up to 5 mA; intended for external logic or sensors requiring clean low-noise rail. |
| V1P8 (Pin 7) | 1.8 V digital core supply | Internally generated 1.8 V rail for logic core; not rated for external loading - capacitor must connect directly to GND. |
| VCP/CPP/CPN (Pins 1, 2, 3) | Charge pump network | Supports high-side gate drive across full input range; requires 0.1 µF ceramic capacitors between CPN–CPP and CPP–VCP. |
| SW (Pin 4) | Buck switch node | Connection point for external inductor (buck mode) or resistor (linear mode); switching frequency ~1 MHz. |
| SWGND (Pin 5) | Buck regulator ground | Dedicated ground return for buck converter; separate from PGND/GND to isolate switching noise from motor and digital grounds. |
| GND (Pin 8) | Digital/analog reference | Common reference for I²C, SPEED, DIR, FG; must be connected to system ground plane with low-inductance path. |
| Thermal Pad | Thermal and electrical ground | Exposed copper pad beneath package - must be soldered to PCB ground plane with ≥4 thermal vias for reliable thermal performance. |
Key Features
| Feature | Design Value |
|---|---|
| Sensorless 180° sinusoidal commutation | Eliminates Hall sensors and reduces acoustic noise by minimizing torque ripple - critical for quiet appliance fan operation. |
| No external current sense resistor required | Integrated current sensing enables overcurrent protection and diagnostics while reducing BOM count and board space. |
| Configurable sleep mode (80 µA) | Shuts down step-down regulator and digital core to enable multi-year battery life in always-on HVAC control modules. |
| EEPROM-programmable spin-up profile | Allows field-tuning of acceleration ramp, start torque, and BEMF detection thresholds for diverse motor inertias and loads. |
| Dual-regulator architecture (buck + LDO) | Delivers 3.3 V or 5 V at up to 100 mA for MCU co-location, while maintaining independent 1.8 V core rail for stable logic operation. |
| Comprehensive fault protection suite | Includes UVLO, overcurrent, thermal shutdown, rotor lock, and voltage surge detection - reduces need for external supervision circuitry. |
Applications
| Appliance Fan Control | HVAC Blower System |
|---|---|
|
Use Scenario: Variable-speed DC fan in refrigerator evaporator or range hood, requiring silent operation and energy efficiency across load points. IC Role / Device Role / Timing Role: Primary motor driver executing sensorless commutation, regulating speed via analog voltage or PWM, and providing tach feedback for closed-loop control. Use Value: 1.5-A continuous current and 250-mΩ rDS(on) enable direct drive of 30-W fans; sleep mode cuts standby power to <1 mW, meeting Energy Star requirements. |
Use Scenario: Centrifugal blower in residential HVAC air handler, operating from 12 V supply with demand-based airflow modulation. IC Role / Device Role / Timing Role: Integrated motor controller managing startup, direction reversal, and speed profiling; FG output synchronizes with building automation system polling intervals. Use Value: EEPROM-stored spin-up profiles adapt to duct static pressure changes; 3.3 V LDO powers thermostat interface ICs, eliminating discrete regulators. |
| Smart Thermostat Fan Interface | Industrial Ventilation Module |
|
Use Scenario: Compact fan module in Wi-Fi-enabled thermostat, where PCB area and acoustic noise are constrained. IC Role / Device Role / Timing Role: Single-chip motor solution handling I²C commands from ESP32 host, analog speed input, and FG reporting - no external gate drivers or regulators needed. Use Value: HTSSOP package with thermal pad fits 12 mm × 12 mm footprint; 80-µA sleep current allows battery backup operation for >2 years without recharge. |
Use Scenario: Dust-extraction fan in factory environment subject to voltage transients, temperature extremes, and long service life requirements. IC Role / Device Role / Timing Role: Ruggedized motor driver providing lock detection, thermal shutdown, and surge protection to prevent field failures in unattended operation. Use Value: –40°C to 125°C junction rating and 150°C thermal shutdown threshold ensure reliability in hot enclosures; UVLO hysteresis prevents cycling near brownout thresholds. |
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 |
|---|---|---|---|
| DRV10975RHFR | Standby mode version (4.5 mA supply current); regulator remains active in standby; no sleep mode. | Suitable when external MCU must remain powered continuously - e.g., systems requiring instant wake-up or real-time monitoring. | Select DRV10975RHFR if the 3.3 V/5 V regulator must stay enabled during idle periods to power companion logic. |
| DRV10983ZRR | Higher 2.5-A continuous current rating; improved thermal performance (RθJA = 27.1 °C/W); same pinout and feature set. | Required for larger fans (>50 W) or higher ambient temperatures where DRV10975ZRHFR approaches thermal limits. | Choose DRV10983ZRR when motor load exceeds 1.5 A RMS or board-level thermal resistance exceeds 14.8 °C/W. |
Compared with DRV10975ZRHFR, the DRV10975RHFR trades ultra-low sleep current for regulator availability in standby, while the DRV10983ZRR extends power capability and thermal headroom without changing interface or layout - enabling scalable design across fan size tiers.
Availability
DRV10975ZRHFR is available at Aetrix Electronics and suitable for appliance fan control, HVAC blower systems, smart thermostat interfaces, and industrial ventilation modules requiring stable component supply, long-lifecycle support, and consistent parametric performance across production batches.
Supply support for DRV10975ZRHFR 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 DRV10975ZRHFR belongs to TI's sensorless BLDC driver product line, engineered specifically for cost-sensitive, low-noise, low-component-count 12-V fan and blower applications - prioritizing acoustic performance, integration density, and ease of tuning.
FAQ
What is the maximum continuous motor current supported by the DRV10975ZRHFR?
The DRV10975ZRHFR supports 1.5-A continuous winding current at TA = 25°C with proper PCB thermal design. This rating assumes use of the exposed thermal pad with ≥4 vias to inner ground planes and operation within the recommended 6.5–18 V input range. Peak current capability is 2 A for short durations, but sustained operation above 1.5 A requires derating based on ambient temperature and board thermal resistance.
Does the DRV10975ZRHFR require an external current sense resistor?
No, the DRV10975ZRHFR does not require an external current sense resistor. It implements integrated current sensing for overcurrent protection and diagnostic feedback. However, the device provides optional support for an external sense resistor if precise power monitoring or custom current limiting is needed - this is enabled via register configuration and does not affect baseline operation.
How does the sleep mode of the DRV10975ZRHFR differ from standby mode in the DRV10975RHFR?
Sleep mode in the DRV10975ZRHFR shuts down the internal step-down regulator and digital core, reducing supply current to 80 µA. In contrast, standby mode in the DRV10975RHFR keeps the regulator active (4.5 mA supply current) to maintain power to external circuitry. The DRV10975ZRHFR exits sleep mode in 1 µs upon valid SPEED input, while retaining EEPROM-configured parameters across sleep cycles.
Can the DRV10975ZRHFR drive a motor directly from a 24-V supply?
No, the DRV10975ZRHFR is rated for absolute maximum VCC of 23 V and recommended operating range of 6.5–18 V. Applying 24 V exceeds both specifications and risks permanent damage. For 24-V systems, TI recommends the pin-compatible DRV10983ZRR (rated 6–28 V) or external pre-regulation to 12 V before the DRV10975ZRHFR input.
What package type and thermal characteristics apply to the DRV10975ZRHFR?
The DRV10975ZRHFR uses the 24-pin HTSSOP (PWP) package with exposed thermal pad (7.80 mm × 6.40 mm). Its thermal metrics include RθJA = 36.1 °C/W (junction-to-ambient) and RθJB = 14.8 °C/W (junction-to-board), requiring soldering of the thermal pad to a solid ground plane with ≥4 thermal vias for reliable operation at full 1.5-A load in 70°C ambient.
DRV10975ZRHFR 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)
DRV10975ZRHFR FAQ
1.How can I place an order for DRV10975ZRHFR through Aetrix?
Please submit a Request for Quotation (RFQ) for DRV10975ZRHFR 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 DRV10975ZRHFR reliable?
The price and inventory of DRV10975ZRHFR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DRV10975ZRHFR is usually 5 days.
3.What payment methods are accepted for DRV10975ZRHFR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DRV10975ZRHFR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DRV10975ZRHFR?
DRV10975ZRHFR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DRV10975ZRHFR 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 DRV10975ZRHFR?
For technical support, including DRV10975ZRHFR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DRV10975ZRHFR requirements.
6.How does Aetrix verify that DRV10975ZRHFR is sourced from the original manufacturer or authorized distributors?
All DRV10975ZRHFR 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 DRV10975ZRHFR meets industry standards.
7.What is the process for return or replacement of DRV10975ZRHFR?
All DRV10975ZRHFR units undergo pre-shipment inspection (PSI). If there is an issue with DRV10975ZRHFR, 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 DRV10975ZRHFR part is unused and in its original packaging.
Return procedure for DRV10975ZRHFR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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