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new products
system startup, peripheral drivers, USB and connectivity
stacks, middleware, and real-time operating system
(RTOS) kernels.
Availability
The new Kinetis K27/K28 MCU family will be
commercially available in April 2017.
See NXP Technologies in action at Embedded World
2017 in Nuremberg, Germany
Visit NXP during Embedded World in Hall 4A – 220 at the
Exhibition Centre Nuremberg. Interact with innovative
demonstrations for embedded solutions enabling the
IoT from smart cars to smart industry.
Allegro MicroSystems, LLC Announces
New Three-Phase BLDC Controller and
MOSFET Driver IC
Allegro MicroSystems, LLC announces a new three-
phase brushless BLDC motor controller for use
with N-channel external power MOSFETs. Allegro’s
AMT49413 incorporates much of the circuitry required
to design a cost-effective, three-phase motor drive
system with maximum supply voltages up to 50 V. This
new device is targeted at high current BLDC motor
applications for speed, position, or torque control
requirements. It has been designed for battery powered
power tools, lawn and garden equipment and factory
automation, pumps, fans, blowers and appliance
applications within the consumer and industrial markets.
The AMT49413 provides functionality over a wide input
supply range. A unique charge pump regulator provides
adequate (>10 V) gate drive for battery voltages down
to 7 V, and allows the device to operate with a reduced
gate drive at supply voltages down to 5.5 V. A bootstrap
capacitor is used to provide the above-battery supply
voltage required for N-channel MOSFETs. An internal
charge pump for the high-side drive allows for DC (100%
duty cycle) operation.
Internal fixed-frequency PWM current control circuitry
can be used to regulate the maximum load current.
The peak load current limit is set by the selection of an
input reference voltage and external sensing resistor.
The PWM frequency is set by a user-selected external
RC timing network. For added flexibility, the PWM
input can be used to provide speed and torque control,
allowing the internal current control circuit to set the
maximum current limit. Efficiency is enhanced by using
synchronous rectification.
A full suite of protection features is provided including
MOSFET shoot-through, undervoltage, overvoltage,
HALL logic fault, low motor current and short to ground,
supply and across motor winding. The dead time can be
set by a single external resistor.
The AMT49413 is supplied in a 48-pin QFN with
exposed thermal pad. This is a small footprint (7mm x
7mm) power package, that is lead (Pb) free, with 100%
matte-tin leadframe plating.
Allegro MicroSystems, LLC is a leader in developing,
manufacturing and marketing high-performance
semiconductors. Allegro’s innovative solutions serve
high-growth applications within the automotive market,
with additional focus on office automation, industrial,
and consumer/communications solutions. Allegro is
headquartered in Worcester, Massachusetts (USA) with
design, applications, and sales support centers located
worldwide. Further information about Allegro can be
found at
www.allegromicro.com.
Analog Devices’ Ultralow Power
Accelerometer Enables Remote IoT Edge
Nodes to Monitor Asset Health
New-Tech Magazine Europe l 75