-A complete sensorless brushless DC motor control solution reduces the difficulty of application development and shortens the time to market-
Beijing, China-November 12, 2013- Silicon Labs (NASDAQ: SLAB), a leading manufacturer of high-performance analog and mixed-signal ICs, today announced the introduction of a BLDC motor control reference design, which is special It is designed for BLDC applications using Silicon Labs C8051F85x / 6x microcontrollers (MCUs) and has a complete hardware and software development kit ready for use. Silicon Labs' new reference design provides a complete system-level solution that can effectively accelerate embedded development and is suitable for a variety of motor control applications, including remote control helicopters, electric toy cars, electronic governors, personal computers and electric fans, electric Tools (such as cutters, electric scissors, lawn mowers, screw guns, and staplers) and small appliances (such as blenders, grinders, electric toothbrushes, and vacuum cleaners).
With the increasing complexity of embedded system design and the increasingly compact development schedule, how to reduce the development time has become a key factor in choosing MCUs in motor control applications. The motor control reference design based on C8051F85x / 6x MCU provides cost-effective hardware and quality firmware, which facilitates rapid evaluation and development in cost-sensitive BLDC applications, thus greatly reducing the difficulty of developers. In addition, the motor control graphical user interface (GUI) can provide developers with great flexibility and ease of use when controlling and understanding BLDC motor operations, and mass-producible and modifiable motor control source code also helps shorten the design. time.
The sensorless BLDC motor control reference design uses a C8051F850 MCU to control the BLDC outer rotor motor (common in toy helicopters) mounted on the motor mounting plate. The power transmission board contains the gate driver, power MOSFET, current sensing resistor and resistor divider. The resistor divider can attenuate the phase voltage of the motor so that they can be measured by the C8051F85x / 6x MCU. The MCU board contains the C8051F85x / 6x MCU, as well as various buttons for starting / stopping, changing the direction of motor rotation, and resetting the MCU. The PWM output of the MCU drives the gate driver on the power transmission board. In addition, the MCU board also contains an operational amplifier (op-amp) to amplify the current induced voltage, so it can be measured by the MCU.
C8051F85x / 6x series products have first-class analog performance, small size package and other characteristics optimized for motor control design, so they are very suitable for BLDC applications. The cost-effective, 8051-based high-performance MCU can drive the 6-pole motor on the reference design kit at a maximum speed of 50,000 rpm. The C8051F85x / 6x MCU series also helps developers reduce overall system cost because it completely eliminates the large number of external components required by traditional designs, such as crystal oscillators, reference voltages, level shifters, temperature sensors, and other discrete devices.
Silicon Labs' sensorless BLDC reference design is designed to provide developers with a productive, complete "out-of-the-box" experience that provides everything needed to play with the motor in five minutes. The reference design includes the following hardware and software tools:
· C8051F850 MCU control board, intelligent drive motor and related auxiliary peripherals.
· Power transmission board with gate driver and power MOSFET.
· Turnigy 450 series 3800 kV BLDC external rotor motor, which can be assembled to the motor mounting plate.
· CD, containing application notes, mass-produced motor control firmware source code and software tools, and motor control GUI.
· Unlimited license free Keil® PK51 development software (worth about $ 2,500).
· Power supply and USB cable.
Diwakar Vishakhadatta, vice president of Silicon Labs and general manager of 8 MCU products, said, "For embedded developers working on cost-sensitive motor control designs, rapid application development, lower system costs, and shorter time to market mean everything. We launched the sensorless BLDC motor control reference design to ease the difficulty of developers and make their work more efficient, but also highly demonstrate the significant BLDC system design based on our popular C8051F85x / 6x MCU Advantage."
Price and availability
Silicon Labs' C8051F850-BLDC-RD motor control reference design is available in volume production at a price of $ 164.99. Silicon Labs' C8051F85x / 6x MCUs are also in volume production and samples are available. When the MCU purchases 10,000 pieces, the unit price starts from US $ 0.40, and it can be reduced to US $ 0.30 when buying large quantities.
For more information on the sensorless BLDC motor control reference design, or to order MCU samples and download free Keil development tools, please visit the website:.
About Silicon Labs
Silicon Labs is an industry-leading innovative manufacturer of high-performance analog and mixed-signal ICs, with a world-class engineering team. With the richest knowledge of mixed-signal design, these designers have developed a variety of highly integrated products that are easy to use and provide customers with advantages such as powerful performance, compact size and low power consumption. For more detailed information about Silicon Labs, please visit the website :.
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