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News
TI‘s smart diode controller realizes the power of zero
2015-11-16 | ReturnDALLAS, 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.
Source:http://www.ti.com/