ROHM's New Automotive-Grade Backlight LED Driver Optimized for LCD Panels

Kyoto, Japan and Santa Clara, Calif., Sept. 17, 2019 (GLOBE NEWSWIRE) -- ROHM today announced the availability of the latest LED driver IC, the BD81A76EFV-M, optimized for LCD backlight in instrument cluster, center information displays and car navigation. Unlike conventional drivers with 4 channels that support LCDs up to 8”, this ICprovides 6 channels of output (with 120mA per channel) that can support LCD panels of up to 10-12” class. At the same time original buck-boost control ensures compatibility with both small and large LCDs using a single driver. This makes it possible to develop a common design of LCD control board suitable for conventional panels along with the latest large-size displays.

In recent years, to improve both visibility and design in the automotive field, LCDs are being used in an increasing number of systems including instrument clusters, head-up displays and car navigation. In addition, larger screen sizes are being demanded. They require a greater number of high brightness LEDs for backlight as well as LED drivers featuring multi-channel operation and advanced dimming features that can prevent flicker effects. 

In response to this increasing market need, ROHM has leveraged its industry-leading analog design technology and incorporated proprietary technologies into its LED drivers to achieve flicker-free operation and to contribute to a common control board design. The BD81A76EFV-M also allows designers to use larger LCD panels in vehicle applications.

“ROHMs new LED driver allows flexibility of design in modern display architectures and ensures backwards compatibility providing cost effectiveness”, Stefan Drouzas, Product Marketing Manager Automotive Display Products, ROHM Semiconductor GmbH.

ROHM will be committed to continuously contribute to technological innovation in the automotive sector by developing products that achieve greater optimization and energy savings in vehicle systems. 

Key Features

1. Original buck-boost control supports a common control board design

The BD81A76EFV-M incorporates proprietary buck-boost control to provide greater application flexibility in LCD applications. In contrast to conventional 6channels backlight LED drivers utilizing only boost control. Although conventional LED drivers are only capable of driving 36 to 60 LEDs (6-10 LEDs/channel), ROHM’s new driver IC expands the range from 6 to 60 LEDs (1-10 LEDs/channel). This ensures the support of not only larger displays but also small and medium size panels as well using a single driver, contributing to a common design of control board.

2. Class-leading 6ch output enables compatibility with the latest 12” displays

Incorporating a constant current driver with low heat generation enables a best-in-class 6 channels LED current output of 120mA per channel. Unlike conventional 4 channels products that support LCDs up to 8”, ROHM’s new driver can accommodate larger panels in the 10-12” class. In addition, original PWM dimming technology (patent no. 2018-169705) provides a dimming ratio of 10,000:1, improving visibility and greater design flexibility for center information displays and instrument clusters.

3. Low standby current minimizes power consumption

Leveraging analog design expertise and process technologies allowed ROHM to reduce standby current consumption to just 10µA. This reduces power consumption to less than 1/3 compared with functionally equivalent products featuring a standby current of 40µA (typ.).

4. Spread spectrum function ensures high reliability, low noise operation

In addition to obtaining qualification under the international AEC-Q100 standard for automotive reliability, the BD81A76EFV-M integrates a spread spectrum function as a countermeasure against EMI that allows it to clear CISPR25 noise requirements for vehicle applications. The result is stable operation in automotive systems sensitive to noise.

Application Examples

◇Car navigation   ◇Center information displays (CID)   ◇Cluster panels

◇Head-up displays (HUD)   ◇Electronic mirrors   ◇Small/medium LCDs

...and other automotive displays (up to 12”) requiring LED backlight

  Availability: Now (samples), October 2019 (OEM quantities)


About ROHM Semiconductor
ROHM Semiconductor is an industry leader in system LSI, discrete components and module products, utilizing the latest in semiconductor technology. ROHM's proprietary production system, which includes some of the most advanced automation technology, is a major factor in keeping it at the forefront of the electronic component manufacturing industry. In addition to its development of electronic components, ROHM has also developed its own production system so that it can focus on specific aspects of customized product development. ROHM employs highly skilled engineers with expertise in all aspects of design, development and production. This allows ROHM the flexibility to take on a wide range of applications and projects and the capability to serve valuable clients in the automotive, telecommunication and computer sectors, as well as consumer OEMs.

Attachments

Jayme Pontious
ROHM Semiconductor
jpontious@rohmsemiconductor.com



Review Article Be the first to review this article
Aldec

 True Circuits: Ultra PLL

Featured Video
Latest Blog Posts
Anupam BakshiAgnisys Automation Review
by Anupam Bakshi
Automation of the UVM Register Abstraction Layer
Bob Smith, Executive DirectorBridging the Frontier
by Bob Smith, Executive Director
Virtual 2020 CEO Outlook Set for June 17
Colin WallsEmbedded Software
by Colin Walls
Multiple constructors in C++
Jobs
Senior Layout Engineer for EDA Careers at EAST COAST, California
Senior Application Engineer Formal Verification for EDA Careers at San Jose and Austin, California
Senior Analog Design Engineers #5337 for EDA Careers at EAST COAST, California
Software Engineer for EDA Careers at RTP, North Carolina
Upcoming Events
Sensors Expo & Conference at McEnery Convention Center 150 W. San Carlos Street SAN JOSE CA - Jun 22 - 24, 2020
Nanotech 2020 Conference and Expo at National Harbor MD - Jun 29 - 1, 2020
IEEE Computer Society Annual Symposium on VLSI (ISVLSI) 2020 at Limassol Hotel, Amathus Area, Pareklisia Cyprus - Jul 6 - 8, 2020
57th Design Automation Conference 2020 at San Francisco CA - Jul 19 - 23, 2020



© 2020 Internet Business Systems, Inc.
25 North 14th Steet, Suite 710, San Jose, CA 95112
+1 (408) 882-6554 — Contact Us, or visit our other sites:
AECCafe - Architectural Design and Engineering TechJobsCafe - Technical Jobs and Resumes GISCafe - Geographical Information Services  MCADCafe - Mechanical Design and Engineering ShareCG - Share Computer Graphic (CG) Animation, 3D Art and 3D Models
  Privacy PolicyAdvertise