Toshiba Launches Brushed Motor Pre-Driver IC for Automotive EPS
March 31 2015 - 2:41AM
Business Wire
Toshiba Corporation (TOKYO: 6502) today announced the launch of
“TB9057FG”, a brushed motor[1] pre-driver IC enhanced to achieve
functional safety and for use in electric power steering systems
(EPS). Sample shipments will start on April 1st, 2015, with mass
production scheduled to start in November, 2016.
Toshiba: a new brushed motor pre-driver
IC "TB9057FG" for automotive EPS (Photo: Business Wire)
More and more safety-critical automotive systems, such as EPS
are required to meet the requirements of ASIL-D [2], the highest
automotive safety integrity level prescribed in ISO 26262, “Road
Vehicles – Functional Safety.”
The new IC integrates key main functions, such as a
pre-driver[3] circuit, motor current detection circuit[4], and
motor direction detection circuit[5], plus various failure
detection circuits, while functions including motor current
detection circuit, power supply PIN, and GND PIN are made redundant
to secure higher functional safety.
Toshiba has also carried out a range of functional safety
analyses to simulate various system failures and will provide
customers with documentation to support safety analysis and
design.
Key Features
1. Various failure detection circuits for
functional safetyBuilt-in VB under voltage detection
circuit, VDD under voltage detection circuit, over temperature
detection circuit, and short detection circuit[6].
2. Redundant function supporting
functional safetyDual motor current detection circuit for
safety-critical systems, such as EPS. Power supply PINs and GND
PINs have redundant configurations.
3. Under voltage operationIn
consideration of voltage drop caused by cranking after idling
reduction, the battery operation voltage range is improved down to
5V (min.) from 6V (min.) of the previous product.
4. Built-in motor current detection
circuit and motor direction detection circuitSimplifies
systems and reduces PCB size.
5. Pre-Driver operation is selectable on
failures detection.Customers can set the system to respond
to detected failures in one of two ways, using the input setting of
the SEL pin. One setting uses this new IC to stop the external
MOSFET, the other switches to external control of the MOSFET using
the MCU. Selection can be made according to the customer’s
application or system, and reduces loads on the MCU.
Main
Specifications
Part Number TB9057FG Mass Production
November, 2016 Sample Price(tax included) 300 yen Mass Production
Volume 1 million units per year Channels 4 channels (high side: 2
channels, low side: 2 channels) Operating
Voltage Range
+5 to 21V Operating Temperature Range -40 to 125°C Input signal
Made for a direct control Detection Circuits VB under voltage
detection circuit, VDD under voltage detection circuit, over
temperature detection circuit, short detection circuit Motor
Current Detection Circuits Converts motor current to voltage and
output to MCU Motor Direction Detection Circuits Detects whether
external MOSFET turns on or off normally and output the direction
information to MCU. Package LQFP48-P-0707-0.50C(9.0mm ×
9.0mm × 1.6mm)
[1] A motor with a commutator (brush)[2] ASIL: Automotive Safety
Integrity Level[3] Pre-driver controls the MOSFET for driving
motor[4] Converts motor current to voltage and output to MCU[5]
Detects whether an external MOSFET turns on or off normally and
output the direction information to MCU[6] Detects any short
circuit between the drain and source of a driver (MOSFET)
For further information about this product, please
visit:http://toshiba.semicon-storage.com/info/lookup.jsp?pid=TB9057FG®ion=apc&lang=en
Customer Inquiries:Automotive Sales and Marketing DepartmentTel:
+81-3-3457-3428http://toshiba.semicon-storage.com/ap-en/contact.html
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 Corporation, a Fortune Global 500 company, channels
world-class capabilities in advanced electronic and electrical
product and systems into five strategic business domains: Energy
& Infrastructure, Community Solutions, Healthcare Systems &
Services, Electronic Devices & Components, and Lifestyles
Products & Services. Guided by the principles of The Basic
Commitment of the Toshiba Group, “Committed to People, Committed to
the Future”, Toshiba promotes global operations towards securing
“Growth Through Creativity and Innovation”, and is contributing to
the achievement of a world in which people everywhere live in safe,
secure and comfortable society.
Founded in Tokyo in 1875, today’s Toshiba is at the heart of a
global network of over 590 consolidated companies employing over
200,000 people worldwide, with annual sales surpassing 6.5 trillion
yen (US$63 billion).To find out more about Toshiba, visit
www.toshiba.co.jp/index.htm
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Media Inquiries:Toshiba CorporationSemiconductor & Storage
Products CompanyChiaki Nagasawa,
+81-3-3457-4963semicon-NR-mailbox@ml.toshiba.co.jp