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Toshiba Launches Brushless Motor Pre-Driver IC for Automotive Applications



  Toshiba Launches Brushless Motor Pre-Driver IC for Automotive Applications

          Contributes to Low-Noise, Highly Efficient Motor Operation

Business Wire

TOKYO -- August 21, 2013

Toshiba Corporation (TOKYO:6502) today announced the launch of “TB9080FG”, a
three-phase brushless motor pre-driver IC for general automotive applications,
which realizes low-noise and highly efficient motor operation through a
sinusoidal wave drive and lead angle control^1. Mass production is scheduled
to start in September this year.

Brushless Motor Pre-Driver IC for Automotive Applications, "TB9080FG" (Photo:
Business Wire)

Brushless Motor Pre-Driver IC for Automotive Applications, "TB9080FG" (Photo:
Business Wire)

Engine noise in vehicles equipped with an idling reduction system disappears
when the system is activated, with the effect of making noise from car air
conditioners much more audible. Demand for a method to cut air conditioner
noise is increasing, but mechanical solutions, such as optimization of blade
shape in blower fans, the major noise source, and noise absorbent material in
air ducts, fall short of realizing low noise.

“TB9080FG” replaces 120-degree rectangular wave control with sinusoidal wave
control that cuts noise from the blower fan motor electronically. Optimized
lead angle control also contributes to the increased efficiency of the motor
operation.

Key Features of the Product
1. Sinusoidal wave control reduces noise
Use of a third harmonic wave realizes sinusoidal wave control, contributing to
quieter motor operation.

2. Digital filter prevents overshoot^2 at motor start-up
Digital filter circuits control external PWM^3 signal, securing a slow motor
start that avoids overshoot.

3. Built-in data table for 16 kinds of rotation numbers
A built-in data table supports use of motors with a range of pole numbers,
from 4 to 12 poles.

4. Optimized lead angle control realizes high efficiency
Motor current is measured and the lead angle automatically controlled in 1
degree increments, contributing to motor operation efficiency.

5. Motor speed feedback control improves the accuracy of rotation speed
Motor rotation speed is controlled by comparing the target figure and the
signal from external hall element sensors^4.

 
Main Specifications
Part Number                   TB9080FG
Sample Price                  400 Yen (Tax Included)
Mass Production               September, 2013
Mass Production Volume        3 Million pieces per year
Channels                      6 channels (Boost DCDC high side: 3 channels,
                              low side: 3 channels)
Standby Current               50μA (Sleep mode, Ta = 25°C)
Operating Voltage Range       +7 to 18V
Operating Temperature Range   -40 to 125°C
                              External PWM ratio or DC input voltage value is
Speed Input Signal            used as the targeted rotational speed to which
                              the IC compares the rotational speed (signal
                              from Hall element) and control the motor speed.
Drive Control                 Sinusoidal wave drive control through generation
                              of third harmonic wave
                              Over current detection, over temperature
                              detection, over voltage detection, low voltage
Detection Circuits            detection of VCC, internal and external
                              temperature detection, external temperature
                              limiter circuit and motor lock detection
                              Output of abnormality information using 10Hz
Diagnostic Circuits           signal and preliminary fixed PWM duty ratio in
                              accordance with each abnormal mode.
Package                       LQFP64 (12mm x 12mm x 1.4mm)
 

Notes:
[1]:   A method to improve motor drive efficiency by controlling the phase
       difference of current and voltage.
[2]:   The signal or value exceeds its target figure temporarily.
[3]:   Pulse Width Modulation. A method to control torque and rotation speed
       of a motor by changing the on and off time in a constant period.
[4]:   A magnetic sensor to detect rotary position and rotation speed.
 

Customer Inquiries:
Automotive Sales and Marketing Department
Tel: +81-3-3457-3428

Information in this document, including product prices and specifications,
content of services and contact information, is current on the date of the
announcement but is subject to change without prior notice.

About Toshiba
Toshiba is a world-leading diversified manufacturer, solutions provider and
marketer of advanced electronic and electrical products and systems. Toshiba
Group brings innovation and imagination to a wide range of businesses: digital
products, including LCD TVs, notebook PCs, retail solutions and MFPs;
electronic devices, including semiconductors, storage products and materials;
industrial and social infrastructure systems, including power generation
systems, smart community solutions, medical systems and escalators &
elevators; and home appliances.

Toshiba was founded in 1875, and today operates a global network of more than
590 consolidated companies, with 206,000 employees worldwide and annual sales
surpassing 5.8 trillion yen (US$61 billion). Visit Toshiba's web site at
www.toshiba.co.jp/index.htm

Photos/Multimedia Gallery Available:
http://www.businesswire.com/multimedia/home/20130820006580/en/

Multimedia
Available:http://www.businesswire.com/cgi-bin/mmg.cgi?eid=50694786&lang=en

Contact:

Media Inquiries:
Toshiba Corporation
Semiconductor & Storage Products Company
Takashi Mochizuki, +81-3-3457-4963
semicon-NR-mailbox@ml.toshiba.co.jp
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