EEJournal

industry news
Subscribe Now
October 21, 2013

TI introduces industry’s first analog DC/DC controller with dynamic temperature-compensated inductor current sensing

DALLAS (October 21, 2013) – Texas Instruments (TI) (NASDAQ: TXN) today introduced the first analog DC/DC step-down controller with remote bipolar junction transistor (BJT) temperature-compensated inductor current sensing that minimizes total solution footprint in high-power POL conversion. The 20-V LM27403 DC/DC synchronous buck controller provides greater than 95-percent efficiency from a 12-V input at 25 A of output current to optimize solution size and deliver fast transient response in communications infrastructure, industrial, medical and power module applications. Used in conjunction with TI’s award-winning WEBENCH® online design tool, the LM27403 simplifies DC/DC conversion and speeds the design process. For more information, samples and evaluation modules, visit www.ti.com/lm27403-pr. Watch a video on how to design a high performance converter here.

The temperature-compensated inductor DC resistance sensing improves the current limit accuracy to 10 percent over temperature by using a low-cost BJT to measure real-time temperature shifts, allowing the LM27403 to maintain a consistent current limit threshold across the operating temperature range. The current limit accuracy over temperature results in a smaller DC/DC converter footprint that reduces inductor over-design and allows for the use of smaller and lower-cost inductors. Watch a video demonstration of temperature-compensated inductor current sensing here.

The LM27403 provides a complete dynamic voltage solution when designed together with TI’s LM10011 voltage identification (VID) interface controller and30-V CSD87350Q5D synchronous buck NexFET™ Power Block MOSFET to adjust the core voltage (VCORE) of a VID-enabled processor, such as TI’sTMS320C6000™ power-optimized DSPs and KeyStone™ based multicore DSPs.

Additional features and benefits

  • Wide 3-V to 20-V input voltage range converts 3.3-V, 5-V and 12-V input voltage rails to point-of-load (POL) as low as 0.6 V with one-percent accuracy.
  • 30-ns minimum on-time allows higher switching frequencies at lower duty cycles, providing greater scalability and smaller solution size.
  • 15-ns adaptive dead-time control provides higher efficiency in high frequency operation, reducing power consumption. Download the regulator design tool here.
  • Output voltage remote sensing gives improved load regulation in high current applications 

About WEBENCH tools from Texas Instruments
The WEBENCH Designer and Architect component libraries include more than 30,000 components from 120 manufacturers. Price and availability is updated hourly by TI’s distribution partners for design optimization and production planning. Offered in eight languages, the user can compare complete system designs and make supply chain decisions in minutes. To start a cost-free design, visit TI’s WEBENCH design environment at www.ti.com/webench-pr.

Availability, packaging and pricing

The LM27403 synchronous buck controller is available in volume now from TI and its authorized distributors. Offered in a 4-mm by 4-mm by 0.8-mm, 24-pin PowerPad™ WQFN package, the controller is priced at US$1.20 in 1,000-unit quantities.

Find out more:

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.

Leave a Reply

featured blogs
How Synopsys IP and TSMC’s N12e Process are Driving AIoT
May 8, 2024
Learn how artificial intelligence of things (AIoT) applications at the edge rely on TSMC's N12e manufacturing processes and specialized semiconductor IP.The post How Synopsys IP and TSMC’s N12e Process are Driving AIoT appeared first on Chip Design....
More from Synopsys...
Captivating Component Art
May 2, 2024
I'm envisioning what one of these pieces would look like on the wall of my office. It would look awesome!...
More from Max's Cool Beans...

featured video

Why Wiwynn Energy-Optimized Data Center IT Solutions Use Cadence Optimality Explorer

Sponsored by Cadence Design Systems

In the AI era, as the signal-data rate increases, the signal integrity challenges in server designs also increase. Wiwynn provides hyperscale data centers with innovative cloud IT infrastructure, bringing the best total cost of ownership (TCO), energy, and energy-itemized IT solutions from the cloud to the edge.

Learn more about how Wiwynn is developing a new methodology for PCB designs with Cadence’s Optimality Intelligent System Explorer and Clarity 3D Solver.

featured paper

Achieve Greater Design Flexibility and Reduce Costs with Chiplets

Sponsored by Keysight

Chiplets are a new way to build a system-on-chips (SoCs) to improve yields and reduce costs. It partitions the chip into discrete elements and connects them with a standardized interface, enabling designers to meet performance, efficiency, power, size, and cost challenges in the 5 / 6G, artificial intelligence (AI), and virtual reality (VR) era. This white paper will discuss the shift to chiplet adoption and Keysight EDA's implementation of the communication standard (UCIe) into the Keysight Advanced Design System (ADS).

Dive into the technical details – download now.

featured chalk talk

PolarFire® SoC FPGAs: Integrate Linux® in Your Edge Nodes
Sponsored by Mouser Electronics and Microchip
In this episode of Chalk Talk, Amelia Dalton and Diptesh Nandi from Microchip examine the benefits of PolarFire SoC FPGAs for edge computing applications. They explore how the RISC-V-based Architecture, asymmetrical multi-processing, and Linux-based reference solutions make these SoC FPGAs a game changer for edge computing applications.
Click here for more information about Microchip Technology MPFS250-VIDEO-KIT Polarfire® SoC FPGA Video Kit
Feb 6, 2024
13,498 views