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TI's smart diode controller realizes the power of zero

Industry's first zero quiescent current solution for reverse polarity protection in industrial power tool and automotive applications


News provided by

Texas Instruments Incorporated

Nov 16, 2015, 08:00 ET

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Industry's first zero quiescent current solution from Texas Instruments provides reverse polarity protection in industrial power tool and automotive applications.
Industry's first zero quiescent current solution from Texas Instruments provides reverse polarity protection in industrial power tool and automotive applications.

DALLAS, Nov. 16, 2015 /PRNewswire/ -- Texas Instruments (TI) (NASDAQ: TXN) today introduced the industry's first smart diode controller with zero quiescent current that provides better efficiency versus Schottky diodes and p-channel MOSFETs. The LM74610-Q1 provides lower power consumption and heat in a compact solution size, making it well-suited for reverse polarity protection in high-current industrial power tool and automotive applications. For more information, samples and an evaluation module, visit www.ti.com/lm74610q1-pr.

The LM74610-Q1 features a unique floating ground architecture that models a diode behavior with zero ground current. Paired with TI's CSD17313Q2Q1 NexFET™ n-channel MOSFET, the duo emulates a diode rectifier when connected in series with a power source, discharging the MOSFET gate in the event of reverse polarity. The LM74610-Q1 can also be used to combine two alternate power sources in an ORing configuration to provide redundancy. Watch a video to learn how to protect your design from reverse voltage conditions.

LM74610-Q1 key features and benefits

  • Zero quiescent current eliminates battery drainage and extends battery life.
  • External n-channel MOSFET enables a scalable solution for a variety of current levels.
  • 45V reverse voltage capability protects against automotive transients. Read a blog post on how to "Design a circuit for reverse polarity protection."
  • AEC-Q100 qualified with 4 kV ESD protection for automotive applications.

For automotive alternator and industrial power alternating current (AC) rectification, TI offers the LM74670-Q1 smart diode controller, which has higher gate drive current (70uA) than the LM74610-Q1, allowing it to handle AC signals up to 300 Hz.

Design a 30-W advanced driver assistance (ADAS) system

Download the "System level reference design for 30-W ADAS system with required automotive protections" reference design of a multi-camera, surround view ADAS system with central processing. The design provides protection from reverse polarity and overvoltage using the LM74610-Q1 and 3-A LM53603-Q1 synchronous DC/DC converter, eliminating the need for a pre-boost during automotive start-stop and most cold crank conditions.

Availability, packaging and pricing

Available in volume now from TI and its authorized distributors, the LM74610-Q1 is packaged in an 8-pin, 3-mm by 5-mm by 1.1-mm VSSOP package and priced at US$1.25 in 1,000-unit quantities. Order an evaluation module for the LM74610-Q1.

Find out more about TI's power management portfolio:

  • Search for and download a power supply reference design in TI's reference design library.
  • Search for solutions, get help and share knowledge in the TI E2E™ Community Power Management forum.

About Texas Instruments

Texas Instruments Incorporated (TI) is a global semiconductor design and manufacturing company that develops analog ICs and embedded processors. By employing the world's brightest minds, TI creates innovations that shape the future of technology. TI is helping more than 100,000 customers transform the future, today.  Learn more at www.ti.com.

Trademarks

NexFET and TI E2E are trademarks of Texas Instruments. All other trademarks belong to their respective owners.

Photo - http://photos.prnewswire.com/prnh/20151111/286546

SOURCE Texas Instruments Incorporated

Related Links

http://www.ti.com

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