Z8FMC160100KIT Zilog, Z8FMC160100KIT Datasheet - Page 13

• Manufacturer Part Number: Z8FMC160100KIT
• Description: KIT DEV FOR Z8 ENCORE Z8FMC16100
• Manufacturer: Zilog
• Series: Z8 Encore! MC™r

Specifications of Z8FMC160100KIT

• Main Purpose: Power Management, Motor Control
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: Z8FMC16100
• Primary Attributes: 3-Ph DC Motors
• Secondary Attributes: Graphic User Interface
• Processor To Be Evaluated: Z8FMC16100
• Data Bus Width: 8 bit
• Interface Type: USB
• For Use With: 269-4664 - KIT ACC OPTO-ISO USB SMART CABLE269-4661 - KIT ACC ETHERNET SMART CABLE269-4539 - KIT ACCESSORY USB SMART CABLE
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 269-3639

TM
Sensorless Brushless DC Motor Control with Z8 Encore! MC
Microcontrollers
Testing
The Phase Locked Loop Back EMF algorithm is critical to a smooth startup and operation. Precise control of
the PWM is required to create constant waveforms to the motor, resulting in the quiet operation of the motor.
These waveforms are shown in
, which captures the voltage on the gate for the High and Low side
Figure 7
MOSFETs on Phase A while the motor is running with 24-VDC input and at the highest speed setting.
Figure 7. MOSFET Gate Signal
To verify the fast shutdown capability during an overcurrent event, the application was set up with an
oscilloscope tied to the PWM output and the current sense resistor. The load was then connected to the BLDC
Motor Control development kit and set up to gradually increase to an overcurrent state. The resulting
oscilloscope-generated waveforms representing this sequence of events are shown in
Figure 8
on page 14.
AN022602-0810