LM73605 / 6 LM76002 / 3:Highly integrated wide-V synchronous converter with excellent EMI and thermal performance

Review:TI's DC / DC Step-Down Regulators Simplify EMI Compliance and Reliability Requirements for Challenging Industrial and Automotive Applications

Texas Instruments has introduced two wide VIN synchronous DC / DC step-down regulators with excellent EMI and thermal performance. The highly integrated 5-A and 6-A LM73605 / 6 and 2.5-A and 3.5-A LM76002 / 3 buck converters feature optimized pinout and excellent thermal conductivity to simplify compliance with challenging industrial and EMI compliance and reliability requirements for automotive applications.

3.5V to 36V The LM73205 / 6 and 3.5V to 60V LM76002 / 3 buck regulators meet and exceed the demanding CISPR 25 Class 5 automotive electromagnetic compatibility (EMC) requirements. The programmable output switching frequency of these regulators can be set above the AM band, eliminating the AM band interference, reducing the size and cost of the output filter; it can also be set to optimize efficiency below the AM band. Watch the video to learn how to use TI's online toolbox to solve EMI problems.

The tiny QFN package features unique wettable sides that provide ultra-low thermal conductivity of 7.1ºC / W (ΨJB) for added reliability and post-weld optical inspection to simplify manufacturing. Optimized package placement provides board design flexibility and helps improve heat dissipation, minimizing radiated emissions and conducted emissions. Watch the video to learn how to use TI's online toolbox to solve thermal issues.

Key Features and Benefits of the LM73605 / 6 and LM76002 / 3:

The new DC / DC converters provide up to 60V of operating input voltage for nominal 12V, 24V or 48V systems such as remote radios, ultrasonic scanners, motor drives, inverters and servo-control units.

The new regulator offers up to 92% full load efficiency at 12VIN, 5VOUT and 500KHz switching frequencies. Very low 15μA standby quiescent current improves light-load efficiency.

The automotive LM76002-Q1, LM76003-Q1, LM73605-Q1 and LM73606-Q1s support compact automotive applications such as an infotainment host and a front / surround camera for autonomous driving.

Accelerate design support and tools

Read the blog post about how the LM73605 provides a variable output voltage in an inverting buck-boost topology.

Accelerate your design process with TI's WEBENCH® online design tool and download a reference design:

Low Noise Fixed Voltage Drop for Ultrasonic CW Pulse Generators ± 2.5 to ± 12VOUT 3A Power Reference Design "

"Dual Port USB Car Charger Reference Design with Port Power Management"

Packaging and delivery

The LM73605, LM73606, LM76002 and LM76003 are available in a 30-pin, 4mm × 6mm WQFN package. All products are now available from TI shops and authorized resellers.

Relevant Texas LM73 series products

Author：Brittany Antonia （The author of article owns the copyright.）