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In recent years, advances in server capacity and performance require larger and higher velocity fans for cooling the excess heat generated by the equipment. Similarly, blowers, vacuum cleaners and pumps also operate with high-speed impellers that require a power capability. Consequently, fan driver ICs need to be able to drive an external FET to deliver more power.
The new TC78B009FTG with sensorless control drives an external FET. It controls the gate driving current of an FET, and can be used with various FETs. In addition, a closed loop speed control regulates and maintains the motor rotational speed under dynamic power fluctuations and load variations. Precise setting of a speed profile is done by the built-in non-volatile memory (NVM) and TC78B009FTG therefore eliminates the need for an external MCU for closed loop speed control.
Main features
• Sensorless drive
Motor rotation is controlled without Hall sensors by detecting the rotational position from the induced voltage. High-speed rotation is realized by a 150° rectangular wave drive. Eliminating the Hall sensors allows reduction of mounting area and cost of IC, also contributing to motor downsizing and cost reduction.
• Stable rotational speed under disturbances
A closed loop speed control regulates motor rotational speed fluctuations caused by changes in power supply voltage and load. An external MCU is not required because the IC has an internal NVM for speed profile setting.
• Flexible in various power applications with appropriate external FETs.
Various FETs can be used, since FET gate current is controlled by the internal NVM.
Applications
Cooling fans for servers, blowers, pumps, cordless vacuum cleaners, robot vacuum cleaners, etc.
Main Specifications
Product name TC78B009FTG
Supply voltage
(operating range) 5.5 to 27V
Driving method Rectangular wave drive
(120°, 135°, 142.5°, and 150° commutation)
Features Hall sensor-less
Selectable closed loop or open loop speed control
Standby function
FET gate current configuration for slew rate control
Selectable forward rotation or reverse rotation
Supports speed control by PWM duty signal, analog voltage signal, and I2C
Supports various setting with I2C interface
Package WQFN36 (5mm×5mm×0.8mm)
Stock Check & Purchase Buy Online
For more information about the new product, please visit:
https://toshiba.semicon-storage.com/info/lookup.jsp?pid=TC78B009FTG&lang=en
To check the availability of the new product at online distributors, please visit:
https://toshiba.semicon-storage.com/ap-en/buy/stockcheck.TC78B009FTG.html
*Company names, product names, and service names may be trademarks of their respective companies.
Customer Inquiries:
System Devices Marketing Dept.II
Tel: +81-3-3457-3332
https://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 Electronic Devices & Storage Corporation
Toshiba Electronic Devices & Storage Corporation combines the vigor of a new company with the wisdom of experience. Since becoming an independent company in July 2017, we have taken our place among the leading general devices companies, and offer our customers and business partners outstanding solutions in discrete semiconductors, system LSIs and HDD.
Our 22,000 employees around the world share a determination to maximize the value of our products, and emphasize close collaboration with customers to promote co-creation of value and new markets. We look forward to building on annual sales now surpassing 800-billion yen (US$7 billion) and to contributing to a better future for people everywhere.
Find out more about us at https://toshiba.semicon-storage.com/ap-en/top.html
View source version on businesswire.com: https://www.businesswire.com/news/home/20191202005339/en/
Contacts
Media Inquiries:
Toshiba Electronic Devices & Storage Corporation
Digital Marketing Department
Chiaki Nagasawa
Tel: +81-3-3457-4963
semicon-NR-mailbox@ml.toshiba.co.jp
Source: Toshiba Electronic Devices & Storage Corporation
Reporter: PR Wire
Editor: PR Wire
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