>
>
Automotive Electronics

 




 

 

Active Rectifier Controller Features Reverse Protection

 PDF

NORWOOD, MA - Analog Devices announces the Power by Linear LT8672, an active rectifier controller with reverse input protection to –40V. Its 3V to 42V input voltage capability is ideal for automotive applications which must regulate through cold-crank and stop-start scenarios with minimum input voltages as low as 3.0V and load dump transients up to 40V. The LT8672 drives an external N-channel MOSFET, offering a 20mV drop, reducing power dissipation by 90% compared to a Schottky diode, eliminating requirements for a costly heat sink. The ultrafast transient response enables it to meet stringent automotive applications requiring AC input ripple rectification up to 100kHz. Additionally, its 20µA quiescent current while operating and 3.5µA in shutdown are ideal for always-on systems. The combination of the MSOP-10 package and external MOSFET ensures a compact solution footprint.

The LT8672’s solution offers the combination of 3V minimum input capability and a 20mV drop, enabling it to ease the minimum input voltage requirement during cold-crank and stop-start, providing simpler and more efficient circuits. If the input power source fails or is shorted, a very fast turn-off minimizes reverse current transients. Also, a power good pin signals when the external MOSFET is ready to take load current.

The LT8672EMS is packaged in an MSOP-10 package. An industrial temperature version, the LT8672IMS, is tested and guaranteed to operate from a –40°C to 125°C operating junction temperature. The LT8672HMS version is tested and guaranteed to operate from a –40°C to 150°C operating junction temperature. For more information, visit www.linear.com/product/LT8672.

Related articles

 30 Watt Medical DC-DC Converter Features Wide 2:1 Input Range in 1x2'' Footprint
 TMR 3WIR and TMR 6WIR Series
 PSDcast - Improving Building Efficiency With Wireless Pneumatic Thermostats

 

 

Log in to read and post comments.

 




 Home | Site Map | Contact | Privacy Policy | Refund Policy | Terms of Service | Copyright © 2018 Power Systems Corporation, All rights reserved 
X

Join Our Newsletter

Sign up today for free and be the first to get notified.