ANB8010
Three-phase BLDC motor driver with 40V, 5A MOSFETs, sensorless control, and comprehensive protection.
Product Overview
Description
The ANB8010 is a highly integrated three-phase brushless DC (BLDC) motor driver featuring integrated power MOSFETs rated for 40V and 5A continuous current.
This device supports both sensorless and Hall-sensor based commutation with automatic dead-time insertion and shoot-through protection.
Built-in protection features include overcurrent protection, thermal shutdown, undervoltage lockout, and lock-up detection for reliable motor operation.
Product Series
ANB
Primary Application
Industrial fans and blowers
Key Features
- Integrated three-phase MOSFET bridge (40V, 5A)
- Sensorless and sensored BLDC commutation support
- Adjustable PWM frequency up to 100kHz
- Comprehensive protection features (OCP, TSD, UVLO)
- SPI interface for configuration and diagnostics
- Current sensing with programmable gain
- Low-power sleep mode (<10μA)
- Compact QFN-32 package
Specifications
| Supply Voltage | 6V to 40V |
|---|---|
| Output Current | 5A continuous, 8A peak |
| RDS(on) | 150mΩ (high-side + low-side) |
| PWM Frequency | Up to 100kHz |
| Control Interface | PWM, SPI, Analog |
| Protection | OCP, TSD, UVLO, OVP |
| Operating Temperature | -40°C to +125°C |
| Package | QFN-32 (5x5mm) |
Applications
Industrial fans and blowers
Industrial automation and control
Drone propulsion systems
Electronic system design
Power tools
Electronic system design
Home appliance motors
Motor drive and control systems
Robotics drives
Motor drive and control systems
Automotive auxiliary pumps
Automotive and EV electronics
FAE Expert Insights
"The ANB8010 is an excellent choice for compact BLDC motor applications requiring integrated power stages. In my experience supporting industrial fan and power tool designs, the integrated 150mΩ MOSFETs provide good efficiency for applications up to 200W. The sensorless commutation algorithm works reliably down to about 300 RPM with most motors, though I recommend Hall sensors for applications requiring precise low-speed control. The SPI interface is particularly useful for real-time current monitoring and fault diagnostics - I've used this feature to implement predictive maintenance in industrial applications. One consideration is thermal management: at 5A continuous current with 150mΩ RDS(on), you need adequate copper area and thermal vias on the PCB. I typically recommend 2oz copper with at least 500mm² of copper pour for reliable operation at maximum current."
Excellent integration for compact BLDC designs up to 200W
— Michael Chen, BeiLuo
Frequently Asked Questions
What is the maximum PWM frequency supported by ANB8010?
The ANB8010 supports PWM frequencies up to 100kHz. However, for optimal efficiency and EMI performance, I recommend operating between 16kHz and 40kHz for most motor control applications. At frequencies above 50kHz, switching losses in the integrated MOSFETs become significant, reducing overall system efficiency. The device includes programmable dead-time insertion (100ns to 2μs) to prevent shoot-through at high switching frequencies.
Use 16-20kHz for audible noise-sensitive applications, 20-40kHz for general-purpose motor control, and 40-100kHz only when fast dynamic response is critical.
How do I implement current limiting with ANB8010?
The ANB8010 provides two current limiting methods: 1) Cycle-by-cycle current limiting using the internal comparator with external sense resistor. Set the threshold using a voltage divider on the ISET pin. 2) Digital current limiting through SPI interface with programmable threshold and response time. For most applications, I recommend the analog method for fast response (<1μs) combined with digital monitoring for system-level protection. The internal current sense amplifier provides 10x gain with ±2% accuracy.
Use analog current limiting for hardware-level protection and digital limiting for software monitoring and graceful degradation.
What PCB layout recommendations are important for ANB8010?
Key PCB layout recommendations for ANB8010: 1) Use solid ground planes with minimal slots to reduce ground bounce. 2) Place bulk capacitors (100μF+) close to VM pin with low-ESR ceramic capacitors (10μF, 0.1μF) in parallel. 3) Keep high-current traces (motor phases) short and wide (minimum 2oz copper). 4) Implement thermal vias under the exposed pad (9 vias, 0.3mm drill). 5) Separate analog ground (AGND) and power ground (PGND), connecting at a single point near the device. 6) Route PWM signals away from motor phase traces to prevent coupling.
Follow the reference layout in the datasheet. Use 2oz copper with adequate thermal vias for applications above 3A continuous current.
Can ANB8010 operate without an external microcontroller?
The ANB8010 requires an external controller for commutation timing and speed control. While the device includes integrated gate drivers and protection, the commutation logic (six-step or FOC) must be implemented externally. For simple applications, a basic MCU with PWM outputs is sufficient. For advanced control, use a dedicated motor control MCU with hardware commutation support. AnalogySemi provides reference code for STM32 and ESP32 platforms to accelerate development.
Use a dedicated motor control MCU for complex applications. For simple on/off control, consider the ANB8011 with integrated trapezoidal commutation.
What is the startup behavior of ANB8010 in sensorless mode?
In sensorless mode, the ANB8010 uses a three-stage startup sequence: 1) Alignment phase - applies DC voltage to align rotor to known position (100-500ms). 2) Open-loop acceleration - ramps speed with fixed commutation timing until Back-EMF is detectable. 3) Closed-loop operation - switches to Back-EMF zero-crossing detection for normal operation. The alignment time and acceleration ramp are programmable via SPI. For high-inertia loads, increase alignment time and use slower acceleration ramps to prevent loss of synchronization.
Tune alignment time and acceleration ramp based on load inertia. Use sensored mode for applications requiring immediate torque at startup.