industry news
Subscribe Now

Boost/SEPIC Controller from Diodes Incorporated Enables 50kHz LED-Wide PWM Dimming in Automotive Lighting Applications

Plano, Texas – September 11, 2023 – Diodes Incorporated (Diodes) (Nasdaq: DIOD) today launches a boost/single-ended primary inductance converter (SEPIC) controller for various automotive LED applications. The AL8853AQ is an automotive-compliant and highly integrated boost/SEPIC controller that provides high performance with a reduced bill of materials (BOM) in automotive LED applications including exterior lights, headlamps, head-up displays (HUD), and backlight displays.

Automotive headlamp manufacturers can use SEPIC topology to enable high or low beam LED array drivers that operate directly from a vehicle’s battery, instead of using the conventional two-stage topology of a boost followed by a buck converter or a full-bridge buck-boost topology. The SEPIC functionality of the AL8853AQ supports cost-effective, simple buck-boost-like topology, which is well-suited for head-up display systems: an increasingly popular feature in automotive designs.

The wide input range (6V to 40V) of the AL8853AQ supports a typical 12V vehicle battery voltage input. Its 200mV feedback reference voltage has ±3% tolerance to maintain tight brightness control while improving efficiency. The fixed 400kHz switching frequency of the AL8853AQ supports low electromagnetic interference (EMI) by using a fundamental frequency outside the medium wave (MW) band. In addition, this controller’s fast (50kHz) pulse width modulation (PWM) to analog dimming mode (100% down to 1%) prevents visible low or high-frequency flickering usually associated with PWM dimming. The AL8853AQ also includes robust protection features to guard against unexpected overvoltage, overcurrent, overtemperature, and diode and inductor short-circuit events.

The AL8853AQ is qualified to AEC-Q100 Grade 1, manufactured in IATF 16949 certified facilities, and is PPAP capable. This controller is available in a SO-8 package at $0.33 in 1,000 piece quantities.

About Diodes Incorporated

Diodes Incorporated (Nasdaq: DIOD), a Standard and Poor’s SmallCap 600 and Russell 3000 Index company, delivers high-quality semiconductor products to the world’s leading companies in the automotive, industrial, computing, consumer electronics, and communications markets. We leverage our expanded product portfolio of discrete, analog, and mixed-signal products and leading-edge packaging technology to meet customers’ needs. Our broad range of application-specific solutions and solutions-focused sales, coupled with worldwide operations of 32 sites, including engineering, testing, manufacturing, and customer service, enables us to be a premier provider for high-volume, high-growth markets. For more information visit

Leave a Reply

featured blogs
Oct 4, 2023
Explore why multi-die systems adoption calls for collaboration across the semiconductor industry w/ panel insights from EDA experts at Ansys, Bosch, & Intel.The post Industry Insights: How Collaboration Will Accelerate Adoption of Multi-Die Systems appeared first on Ch...
Sep 21, 2023
Not knowing all the stuff I don't know didn't come easy. I've had to read a lot of books to get where I am....

featured video

Intel Agilex® 3 FPGA and SoC FPGA

Sponsored by Intel

Extend Intel Leadership with Intel Agilex® 3, to complete the full spectrum of FPGAs portfolio from high to low, all built on our resilient global supply chain.

Click here to learn more about Intel Agilex® 3 FPGAs

featured paper

Accelerating Embedded Software Development with the Intel® Simics® Simulator for Intel FPGAs

Sponsored by Intel

In a traditional FPGA design flow, the main portion of the software development cannot start until hardware is available. Intel provides the Intel Simics simulator for Intel Agilex 5 SoC FPGAs to give developers a vehicle to exercise their software in parallel with hardware development. Developers can run the same compiled binary software files providing the same results in the software’s execution. Software can be developed, debugged, and verified on the virtual platform up to a year in advance of the physical hardware becoming available.

Click here to learn more about the Intel Simics simulator

featured chalk talk

What are the Differences Between an Integrated ADC and a Standalone ADC?
Sponsored by Mouser Electronics and Microchip
Many designs today require some form of analog to digital conversion but how you implement an ADC into your design can make a big difference when it comes to accuracy and precision. In this episode of Chalk Talk, Iman Chalabi from Microchip and Amelia Dalton investigate the benefits of both integrated ADC solutions and standalone ADCs. They discuss the roles that internal switching noise, process technology, and design complexity play when choosing the right ADC solution for your next design.
Apr 17, 2023