Industrial Motor Control Solution

The Industrial Motor Control Solution supports three motor types: DC motors with H-bridge drivers and PWM speed control

Stepper motors with microstepping up to 1/32 step for precision positioning

and Brushless DC motors with field-oriented control (FOC) for high-efficiency operation. The modular design allows mixing different motor types in multi-axis systems with unified control interfaces.

Select motor type based on application requirements: DC for simple speed control, stepper for precision positioning, BLDC for high-efficiency continuous rotation.

The PSB8060 includes integrated FOC algorithms that simplify implementation. Configure motor parameters (pole pairs, resistance, inductance) via SPI interface. The controller automatically executes Clarke and Park transformations, current loop control, and space vector PWM generation. External MCU provides speed and torque commands through SPI or analog inputs. The reference firmware includes auto-tuning routines to optimize PI controller gains for your specific motor.

Use the reference firmware as a starting point. Measure motor parameters accurately for best FOC performance. Contact our FAE team for motor characterization support.

The solution supports multiple communication interfaces: SPI for high-speed real-time control and parameter access

UART for simple command interface and debugging

CAN bus for industrial network integration

and Analog inputs for traditional control signals. The SPI interface provides full access to all control parameters, diagnostics, and fault status. Multiple interfaces can be used simultaneously for different purposes.

Use SPI for high-performance applications requiring fast updates. Use CAN for distributed industrial systems. Use UART for simple control and debugging.

Safety implementation includes: 1) Torque control using current sensing with 1% accuracy for force limiting

2) Dual-channel safety inputs for emergency stop

3) Safe torque off (STO) function disabling power stage within 1ms

4) Continuous diagnostic monitoring of all safety-critical functions

5) Redundant current sensing for fault detection. The reference firmware includes safety-certified control loops meeting ISO 10218 and ISO 13849 requirements.

Implement all safety features from the reference design. Conduct thorough safety testing and certification. Contact our FAE team for safety implementation guidance.

Thermal management depends on operating current and duty cycle. At 3A continuous current, the motor driver dissipates approximately 2W requiring a heatsink or thermal vias to copper planes. The reference design includes thermal vias under the driver package connecting to internal ground planes. For high-current applications, external heatsinks or forced air cooling may be required. Use the thermal calculator in the application note to determine requirements for your specific operating conditions.

Follow thermal recommendations in reference design. Use thermal simulation to verify design. Add heatsinking for currents above 3A continuous.

Control loop tuning involves: 1) Current loop tuning first - set Kp for fast response without oscillation, then add Ki to eliminate steady-state error

2) Speed loop tuning with gains 5-10x lower than current loop

3) Position loop tuning if applicable. The reference firmware includes auto-tuning that measures motor parameters and calculates initial gains. Fine-tune manually based on actual response - increase Kp until overshoot is acceptable, then adjust Ki for settling time requirements.

Start with auto-tuning, then fine-tune for your specific requirements. Use step response tests to evaluate tuning. Contact our FAE team for tuning assistance.