Boost/SEPIC Controller from Diodes Incorporated Enables 50kHz LED-Wide PWM Dimming in Automotive Lighting Applications
12 Setembro 2023 - 11:14AM
Business Wire
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 www.diodes.com.
Automotive-compliant - AEC qualified, manufactured in IATF 16949
certified sites supporting PPAP documents.
The Diodes logo is a registered trademark of Diodes Incorporated
in the United States and other countries.
All other trademarks are the property of their respective
owners.
© 2023 Diodes Incorporated. All Rights Reserved.
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version on businesswire.com: https://www.businesswire.com/news/home/20230912002379/en/
Gurmeet Dhaliwal Director, Investor Relations & Corporate
Marketing Diodes Incorporated +1 408-232-9003 Contact Us
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