Competitive Motor Control Solutions from Zilog
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Due to their falling costs over the recent years, brushless DC (BLDC) motors have been gaining more market share and are gaining in popularity because of their high efficiency and reliability, small size, and silent operation. ZiLOG's high performance Z8 Encore! MC™ 8-bit microcontrollers provide the advanced electronic features needed to keep your BLDC design competitive in the marketplace today. Accurate motor control and high speed processing while improving energy efficiency and system cost - achieve all that and more with Z8 Encore! MC™ microcontrollers.
BLDC design competitive in the marketplace today. Accurate motor control and high speed processing while improving energy efficiency and system cost - achieve all that and more with Z8 Encore! MC™ microcontrollers.
Main Applications
- Heating, ventilation and air conditioning
- Small and large appliances
- Pumps
- Automotive (power steering, seat control)
- Toys
- Compressors and fans
- Industrial drives
Key Features
- 8-channel 2μs A/D Converter allows accurate current and back EMF sensing
- Time stamp on ADC sampling for accurate back EMF zero crossing
- Op-amp with external gain settings for current sensing amplification
- Comparator with programmable shutdown for over-current protection
- 3-phase PWM module optimized for motor control
- 2% Internal Precision Oscillator
Design Challenges
- Reliable Sensorless Startup
Accomplish accurate positional feedback in sensorless motor control applications with our fast ADC tied to the PWM module controlled by a distinctive back EMF control algorithm.
- High Speed
Our fast ADC and the 20 MHz CPU core provide the processing ability required to run the complex motor control algorithms to support the high speed of BLDC motors.
- Accurate Torque Regulation
Integrated op-amp, time stamp, and s/h circuitry provide effective tools to determine your rotor's position and achieve tight torque control.
- Energy Efficiency
Ability to run the motor at slower speeds reduces power consumption. Our 2μs ADC with time stamp is tied to the PWM module and allows you more accurate control of the motor at lower or variable speeds.
- Quiet Operation
Keep your BLDC motor's audible noise low by using the soft start feature and ability to adjust the speed of the motor by using our advanced analog motor control features.