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Renesas Electronics Simplifies Sensor-Less Brushless DC Motor Control Design for Home Appliance and Electric Power Tool ApplicationsRenesas Electronics Corporation (TSE: 6723), a premier provider of advanced semiconductor solutions, today announced the RL78/G1F Group of multi-function microcontrollers (MCUs), adding 20 new members to its low-power RL78 Family of MCUs. Featuring enhanced peripheral functions and compatibility across the RL78/G1x Series of MCUs, the new devices simplify sensor-less brushless DC motor (BLDC motor) control and deliver precision operation at faster rotational speeds with high accuracy for energy-efficient home appliances and electric power tools. "The increasing demand for high-efficiency consumer and commercial motor-driven systems requires sophisticated motor control MCUs to meet the needs for better efficiency, lower costs and smaller footprint," said Nelson Quintana, Director of Marketing, Renesas Electronics America. "As a global MCU leader, we are committed to delivering innovative solutions for motor control applications in the appliance and power tools markets. Solutions like the new RL78/G1F Group address the technical challenges facing OEMs in these markets, enabling them to improve performance, reduce system costs, and still meet power requirements." The need for more efficiency and reduced system costs for motor-driven appliances, such as vacuum cleaners, dishwashers and refrigerators, as well as electric power tools are driving a shift from traditional motors with built-in position sensors to sensor-less BLDC motor systems. The new RL78/G1F MCUs integrate fast 3-phase timer and dedicated comparators and operational amplifiers to ensure high-speed sensor-less control. The peripheral functions required for sensor-less control, including high-speed timers and comparators, contribute to the reduction of up to 20 external components and lower development costs. In addition, Renesas has added an auxiliary timer designated for motor control to enable better control at a wider range of speed. Key features of the RL78/G1F MCUs:
(1) Dedicated motor control subsystem with the new
auxiliary timer supports operation at up to 64 MHz
(2) Software configurable, high slew rate PGA
reduces cost and simplifies development
(3) Two-channel high-speed comparator enables
reliable overcurrent detection and rotor position detection
(4) D/A converter and IrDA (Infrared Data
Association) communication function
(5) 4 mm × 4 mm package reduces PCB footprint for
more compact applications Pricing and Availability The RL78/G1F lineup comprises 20 product versions with pin counts from 24 to 64 pins and flash memory capacities of 32 KB or 64 KB. Samples are available now. Pricing varies depending on memory capacity, package and number of pins. For example, the R511BGCAFB MCU with 32 KB of flash memory, 5.5 KB of RAM (News - Alert) and 4 KB data flash equipped on a QFP (quad flat package) with 48 pins is priced at US$1.10 per unit in sample quantities of 10,000. Mass production is scheduled to begin in July 2015 and is expected to reach a scale of 1,000,000 units per month in December 2016. (Pricing and availability are subject to change without notice.) For more information on Renesas, follow Renesas Electronics America at @RenesasAmerica on Twitter (News - Alert) and http://www.facebook.com/RenesasAmerica. (Remarks) All registered trademarks or trademarks are the property of their respective owners. About Renesas Electronics Corporation Renesas Electronics Corporation (TSE: 6723), the world's number one supplier of microcontrollers, is a premier supplier of advanced semiconductor solutions including microcontrollers, SoC solutions and a broad-range of analog and power devices. Business operations began as Renesas Electronics in April 2010 through the integration of NEC (News - Alert) Electronics Corporation (TSE:6723) and Renesas Technology Corp., with operations spanning research, development, design and manufacturing for a wide range of applications. Headquartered in Japan, Renesas Electronics has subsidiaries in 20 countries worldwide. More information can be found at www.renesas.com.
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