Texas Instruments DRV10975ZPWP

Overview

DRV10975ZPWP 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 step-down regulator configurable for 3.3-V or 5-V output, I²C programmability, and dedicated SPEED/DIR/FG pins - deployed in HVAC blowers and appliance fans requiring quiet, compact, low-BOM motor control.

For engineers reviewing the DRV10975ZPWP datasheet, DRV10975ZPWP pinout, DRV10975ZPWP application, or DRV10975ZPWP equivalent, key selection considerations include its sleep-mode supply current (80 µA), integrated charge pump for gate drive, thermal shutdown at 150°C, and compatibility with analog/PWM speed command inputs without external sense resistors.

Technical Context

The DRV10975ZPWP implements a sensorless back-EMF estimation algorithm that continuously monitors phase voltages to determine rotor position and enable smooth 180° sinusoidal drive - eliminating torque ripple and pure-tone noise. Its internal architecture integrates a hysteretic buck regulator (with SW, SWGND, VREG pins), dual LDOs (V3P3 and V1P8), and a charge pump (VCP/CPP/CPN) to sustain high-side gate drive across the full 6.5–18-V input range.

Motor control is executed via three half-bridge outputs (U/V/W), each driven by matched N-channel MOSFETs with total H+L r_DS(on) of 250 mΩ typical. Protection logic includes overcurrent detection (2–4 A threshold), lock detection with 0.3-s entry and 5-s release timing, UVLO (5.2–6.5 V rise threshold), and thermal shutdown with 10°C hysteresis.

Key Specifications

Pinout & Package

DRV10975ZPWP uses a thermally enhanced 24-pin HTSSOP (PWP) package with exposed thermal pad (7.80 mm × 6.40 mm), optimized for PCB heat spreading via soldered thermal pad and bottom-side vias.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar three-phase sensorless BLDC motor driver applications.

Compared with DRV10975ZPWP, DRV10975PWP trades ultra-low sleep current for always-on regulator availability, while DRV10983ZPWPR delivers 100% higher current capacity and broader input voltage support - making it suitable for next-generation HVAC platforms scaling beyond 39-W thermal limits.

Availability

DRV10975ZPWP is available at Aetrix Electronics and suitable for HVAC blower modules, appliance fan assemblies, and refrigeration evaporator systems requiring stable component supply, long-term lifecycle assurance, and automotive-grade reliability validation.

Supply support for DRV10975ZPWP 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 DRV10975 product line targets cost-sensitive, low-noise, low-component-count BLDC motor applications - specifically engineered for quiet, efficient, and compact fan drive in white goods and climate control systems.

FAQ

What is the primary function of the DRV10975ZPWP in a motor control system?

The DRV10975ZPWP serves as a fully integrated three-phase sensorless BLDC motor driver IC, combining power MOSFETs, gate drivers, BEMF-based commutation logic, and a configurable step-down regulator. It directly replaces discrete MOSFETs, gate drivers, and external regulators in fan applications - enabling compact, low-noise, and low-BOM designs. The DRV10975ZPWP executes sinusoidal 180° drive without position sensors and supports analog, PWM, or I²C speed control.

How does the DRV10975ZPWP achieve ultra-low acoustic noise in fan applications?

The DRV10975ZPWP achieves ultra-low acoustic noise through its proprietary sensorless back-EMF control algorithm that generates continuous sinusoidal phase voltages - eliminating the torque ripple inherent in trapezoidal commutation. This reduces pure-tone noise generation by >15 dB compared to conventional six-step drivers. The DRV10975ZPWP's 180° commutation, combined with integrated current monitoring and soft-switching gate drive, ensures smooth acceleration and steady-state operation below 25 dB(A) in typical appliance fan configurations.

Can the DRV10975ZPWP operate without an external microcontroller?

Yes, the DRV10975ZPWP can operate autonomously using its dedicated SPEED and DIR pins for analog/PWM speed command and forward/reverse control - no microcontroller required. Its internal EEPROM stores calibrated motor parameters and spin-up profiles, enabling standalone operation after initial setup. However, for dynamic tuning, diagnostics, or multi-motor synchronization, the I²C interface allows real-time register access and firmware-driven configuration of the DRV10975ZPWP.

What thermal management features does the DRV10975ZPWP include?

The DRV10975ZPWP incorporates thermal shutdown at 150°C with 10°C hysteresis, junction temperature monitoring accessible via I²C registers, and a thermally enhanced HTSSOP package with exposed bottom thermal pad (R_θJC(bot) = 1.1°C/W). Its design supports >1.5-A continuous current at 70°C ambient without external heatsinking when the thermal pad is properly soldered and connected to a 4-layer PCB with ≥4 thermal vias. Thermal performance is further enhanced by the integrated buck regulator's efficiency, reducing internal power dissipation.

What is the difference between DRV10975ZPWP and DRV10975PWP?

The DRV10975ZPWP and DRV10975PWP share identical pinout, package, and feature set but differ in power-management mode: DRV10975ZPWP enters deep-sleep mode drawing only 80 µA, shutting down the internal regulator, while DRV10975PWP enters standby mode drawing 4.5 mA with the regulator remaining active. This makes DRV10975ZPWP ideal for battery-backed or energy-critical systems, whereas DRV10975PWP suits applications requiring continuous 3.3-V/5-V supply to external logic during motor idle - both are drop-in replacements in the same PWP HTSSOP footprint.