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Microchip adds complete 3-phase BLDC motor drive capability A three-phase BLDC motor gate driver with power module provides all the power, sensing and protection functions needed to implement a robust, highly-efficient solution; it integrates voltage regulators, current-sensing amplifiers and over-current protection. Increased flexibility comes with configurable driver dead-time management, driver blanking-time control, and Over-Current Limit (OCL) for external MOSFETs; the device is suitable for harsh conditions such as industrial & automotive under-hood applications, Microchip says. The MCP8024 includes functions that power dsPIC Digital Signal Controllers (DSCs) and PIC microcontrollers (MCUs) with capabilities to drive six N-channel MOSFETs. It operates across a voltage range of 6V to 28V and can withstand transient voltage up to 48V. The device provides high-integration analogue functions, such as three currentsensing operational amplifiers; an over-current comparator; MOSFET drivers and a bidirectional communication interface for a complete motor system design. An adjustable step-down DC-to-DC converter powers a broad range of microcontrollers. In addition, the wide operating temperature range, from -40°C to +150°C (H-temp), allows the MCP8024 to be used in harsh environments such as automotive under-hood applications. The MCP8024 is in thermally-enhanced 40-pin QFN 5 x 5 mm and 48-pin TQFP 7x7mm packages. Microchip www.microchip.com Servo motor controller supports sensorless operation of BLDC motors The ESCON Module 50/4 EC-S from maxon motor is a miniaturized OEM plug-in module for sensorless BLDC applications. With a claimed efficiency of 97%, the compact 4-quadrant PWM servo motor controller is suitable for permanentmagnet activated sensorless BLDC motors (brushless DC motors, so-called EC motors) with-out Hall sensors up to approximately 200 Watts. The plug-in module’s driftfree and extremely dynamic speed behaviour enables speeds up to 120‘000 rpm and provides extensive functionality with free configurable digital and analogue inputs/outputs. It matches maxon’s motor range to suit even highest-demand applications and dynamic drive solutions and can be operated in speed controller (closed loop) and speed controller (open loop). The servo controller is controlled by an analogue set value. It can be specified by means of analogue voltage, by external or internal potentiometer, by defined value, or by means of a PWM signal with variable duty cycle. The ESCON Module 50/4 EC-S features protective circuitry against overcurrent, excess temperature, undervoltage and overvoltage, voltage transients and short-circuits in the motor cable. It also is equipped with protected digital inputs and outputs and adjustable current limitation to protect motor and load. maxon motor AG www.maxonmotor.com ‘Pocket’ CompactPCI system offers flexible modularity in a compact size Kontron has launched a control cabinet computer in its 3U CompactPCI Value Line series using Intel’s Celeron 807UE processor The intelligent system offers customers a compact sized industrial computer with all the flexibility of a modular 3U CompactPCI server. OEMs and system integrators can use the entire ecosystem of 3U CompactPCI and define their dedicated wall mount system within minutes, reducing design and system integration effort to a minimum. By downgrading system functionality from a server to a box sized CompactPCI platform, the intelligent modular system has also been cost-optimized - a perfect fit for price-sensitive applications such as machine and factory control, programmable logic controllers, and inspection systems. The advantage of using the CP-POCKET over conventional box PC sized designs is by including versatile expansion options enabled by rugged CompactPCI peripheral boards. Accessible from the front without the need to remove the enclosure, the boards are easily swapped in a matter of seconds. An actively cooled system can operate in ambient temperatures from 0°C to 50°C. The CP-POCKET integrates the 3U CompactPCI CP3003-V controller that uses the Intel Celeron 807UE processor with 1.0 GHz and the Intel QM77 Platform Controller Hub. A smart cache of 1 MB and up to 4 GB of DDR3 SDRAM memory with as much as 1333 MHz guarantee high data throughput. Kontron www.kontron.com Rugged ECU targets construction and agricultural machines TTControl’s HY-TTC 500 electronic control units feature freely programmable controllers with a high performance dual-core ARM Cortex-R4 lockstep processor, they are designed for use in demanding safety-critical mobile applications and protected by a compact, automotive-style housing suited for harsh environments. The controllers fulfill safety requirements up to SIL 2 (IEC 61508) / PL d (ISO 13849) and can be programmed either in C or in CODESYS. The safety certified CODESYS Safety SIL 2 speeds up application validation significantly. The majority of run-time tests that is needed to achieve the diagnostic coverage required for SIL 2 / PL d is performed in hardware by the dual-core lockstep CPU and its safety companion. Therefore almost the full processor power is available for the application. The available memory protection mechanisms allows to execute safety and non-safety software on the same ECU without interference. The time-consuming validation of non-safe software is therefore no longer necessary. Safe data communication is achieved by the standardized CANopen Safety protocol. In case of safety-relevant failure outputs can be shut-off in 3 groups allowing limp-home functionality. The extensive I/O set with various configuration options makes the HY-TTC 500 controllers suitable for a wide range of high-end applications. TTControl www.ttcontrol.com www.electronics-eetimes.com Electronic Engineering Times Europe December 2013 37


EETE DEC 2013
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