SYS-CON MEDIA Authors: Liz McMillan, Sean Houghton, Glenn Rossman, Ignacio M. Llorente, Xenia von Wedel

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Freescale Kinetis V Series MCUs Streamline Next-Generation Motor Control and Digital Power Conversion Applications

Continuing to expand one of the industry’s broadest portfolios of ARM-based microcontrollers (MCUs), Freescale Semiconductor (NYSE: FSL) introduces the lead families of the new Kinetis V series, optimized for motor control and digital power conversion applications. To complement the Kinetis V series, Freescale also introduces the Kinetis Motor Suite, a bundled enablement tool that helps to maximize motor efficiency while reducing development cost and time to market.

Modern sensored and sensorless motor control is demanding on the MCU and requires precise speed and position measurement in parallel with general application task processing. The MCU must be able to support a range of control algorithms – from entry level BLDC to advanced PMSM and ACIM control loops – as well as offer high speed/resolution ADCs and PWMs for fast, accurate signal capture and response. Developers must also have access to intuitive software tools that allow them to create, tune and implement their control algorithms quickly and efficiently.

The Kinetis V series’ fast signal acquisition and processing capabilities, combined with the intuitive Kinetis Motor Suite, provide a unified hardware and software platform for developing scalable, cost-effective motor control systems. With the Kinetis V series, designers of products ranging from low-end pool pumps to advanced robotics can now leverage the increased efficiency, quieter operation, and improved reliability benefits of the latest motor technologies.

“With Freescale’s more than 20 years of motor control processor expertise, and our exceptionally strong reputation in these markets, motor control and digital power were the logical next steps for the Kinetis roadmap,” said Geoff Lees, senior vice president and general manager for Freescale’s Microcontroller business. “Kinetis V series’ excellent price/performance ratio, tailored peripheral set and bundled Kinetis Motor Suite allow developers to create highly efficient designs faster and easier than ever before.”

Kinetis V series MCUs and the new Kinetis Motor Suite software will be on display during the Freescale Technology Forum (FTF) Americas from April 8-11 in Dallas, Texas.

Kinetis KV4x, KV3x and KV1x MCUs

The KV4x family is the flagship of the existing V series, targeting digital power conversion designs, as well as PMSM and ACIM applications requiring high dynamic control. Engineered for optimal performance, KV4x MCUs incorporate a 150 MHz ARM Cortex-M4 processor with floating-point unit executing from up to 256 KB of Flash memory via a 128-bit wide interface that minimizes CPU wait states. With up to 30 timer channels – twelve provided by the highly flexible eFlexPWM – KV4x family devices provide multiple three-phase motor drive capabilities supporting dead time insertion, complementary pairing of PWMs, half cycle reload and fault detection. For sensorless motor control speed/position detection, two 12-bit ADCs support sample rates of up to 1.9 Msps and can be triggered by any module connected to the MCU’s internal peripheral crossbar, including timers, analog comparators or GPIO. For switched mode power supply applications, an eFlexPWM module provides 300 picosecond resolution, while the ADCs sample at 4.1Msps. This improves real-time control, ensuring that critical timing windows for data gathering and system updates are met. In addition, the KV4x family’s high degree of feature integration enables up to 30 PWM outputs, 38 ADC channel inputs, as well as CAN, UART and SPI interfaces to be housed in a 100-pin LQFP package.

The KV3x family, also Cortex-M4 based, targets intermediate PMSM applications with CPU frequencies of 100-120 MHz, up to 512/96 KB of Flash/SRAM and an optional external bus interface for off-chip system expansion.

The KV1x family represents the entry-level of the series and integrates the industry’s fastest Cortex-M0+ MCU core. With a CPU frequency of 75 MHz, plus hardware divide and square root block, KV1x devices offer a performance increase of more than 25 percent in math-intensive applications compared to other MCUs in the family’s class. Packing this high processing efficiency into a small, 32 KB solution positions KV1x MCUs as cost-effective options for BLDC and PMSM designs that currently rely on larger, more expensive 32-bit MCUs.

Kinetis Motor Suite and additional motor control enablement

Traditionally, PID loop tuning is trial and error based, requires in-depth motor control expertise and results in non-optimal system performance that can degrade over time. Kinetis Motor Suite addresses these issues, simplifying the development cycle, delivering more predictable system response and reducing time to market.

The Kinetis Motor Suite consists of three software components for tuning, observing and managing motor control system operation: the Kinetis Motor Tuner, a GUI for motor parameter configuration that enables fast, precise PID loop tuning in minutes rather than months; Kinetis Motor Observer, advanced software pre-programmed into the MCU that enables tuning of control loops and estimation blocks to regulate motor and inverter efficiency, power factor, current/torque ripple and noise, and; the Kinetis Motor Manager, which provides a real-time, non-intrusive display of system variables and the MCU memory map. The motor manager includes a software oscilloscope with debugging and data logging capability. Kinetis V series MCUs pre-programmed with Kinetis Motor Suite software will be available to order in the third quarter of 2014.

Freescale also provides a range of GUI-based motor configuration and debug tools, software libraries and Tower System development modules.

Availability

Production-qualified Kinetis KV1x MCUs are now available with suggested resale pricing from $0.99 (USD) in 10k unit quantities. Kinetis KV3x MCUs are currently sampling, and Kinetis KV4x MCUs are planned to sample in Q3 2014. For more information, visit www.freescale.com/Kinetis/vseries.

About Freescale Semiconductor

Freescale Semiconductor (NYSE:FSL) is a global leader in embedded processing solutions, providing industry leading products that are advancing the automotive, consumer, industrial and networking markets. From microprocessors and microcontrollers to sensors, analog integrated circuits and connectivity – our technologies are the foundation for the innovations that make our world greener, safer, healthier and more connected. Some of our key applications and end-markets include automotive safety, hybrid and all-electric vehicles, next generation wireless infrastructure, smart energy management, portable medical devices, consumer appliances and smart mobile devices. The company is based in Austin, Texas, and has design, research and development, manufacturing and sales operations around the world. www.freescale.com.

Freescale, the Freescale logo and Kinetis are trademarks of Freescale Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off. All other product or service names are the property of their respective owners. ARM and Cortex are trademark or registered trademarks of ARM Ltd or its subsidiaries in the EU and/or elsewhere. All rights reserved. © 2014 Freescale Semiconductor, Inc.

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