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Toshiba Electronics Europe has expanded its family of
System on Chip (SoC) motor drive solutions with a three
phase, sine wave PWM driver. They reduce component
count and noise and improve the efficiency of BrushLess DC
(BLDC) motor applications.
The TB6585FG Application Specific Standard Product (ASSP) is a
complete motor driver solution that integrates commutation logic,
sine wave PWM generation, Hall sensor amplification, motor drive
power stage and protection functionality into a single, 36-pin
HSOP package. Designed for <45W power and a wide 4.5V to 36V
input range, the IC can deliver a maximum current of 1.8A. It suits
a range of applications, including home appliances, pumps, fans
and industrial motion control.
An analogue signal input enables the TB6585FG to modify the
PWM duty cycle and control forward or reverse motor rotation
speed. Combining a triangular waveform generated on-chip
with the buffered, amplified inputs from three Hall effect sensors
generates three modulated, synchronised commutation waveforms
to drive the motor.
By providing sinusoidal waveforms to drive the motor phases,
the TB6585FG helps minimise electrical and acoustic noise when
polarities in the driver circuit switch between positive and negative.
This promotes more efficient operation, helps to reduce vibrations
and enhances reliability. The ability to control lead angle allows a
designer to tune the delay between current and voltage phases,
which further improves efficiency in the target application.
The TB6585FG offers configurable modes for improving motor start-
up characteristics and has inbuilt protection against overcurrent
conditions. An ability to detect excessive commutation frequency
and low rotation speed also improves design flexibility.
Features
U Highly integrated, system on chip ASSP
U BLDC motor drive
U Three phase, sine wave PWM generation
U Reduces noise, vibration, component count
U Increases operation efficiency
U Commutation logic
U Hall sensor amplification x 3
U Motor drive output power stage
U Input voltage: 4.5V to 36V
U Power <45W
U 36-pin HSOP package
Applications
U Home appliances
U Pumps
U Fans
U Industrial motion control
For further information, including FREE TB6585FG Samples and the
Motor Solutions Guide, please complete the reply slip or visit
http://www.arrowne.com/innov/in216/f_1428.shtml
Motor Control SoC Improves Efficiency, Cuts Noise
and Component Count
27
POWER AND LINEAR IC
SOLUTIONS
Single chip, three phase, sine wave drivers
ENQUIRY 1428
Toshiba Motor Solutions Guide and FREE
TB6585FG Samples available! Please complete
the reply slip or visit the weblink below.