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new products
Maxim’s Automotive LED Controller
Eliminates Trade-Off Between Fast Response
Time and Low EMI for Exterior Lighting and
Improved Safety Applications
The MAX20078 synchronous buck, high-brightness LED
controller from Maxim Integrated Products, Inc. (NASDAQ:
MXIM) is the only product available which provides both
fast response time and low electromagnetic interference
(EMI) for exterior LED lighting and improved safety
applications. Ideal for matrix lighting designs, the LED
controller allows designers to achieve high performance,
ease of design, and fast time-to-market.
In advanced lighting applications such as matrix lighting,
LED drivers and controllers have challenges when
switching LEDs at high speeds which can cause overshoots
and undershoots in current. These applications are not
easy to design, as they require numerous LEDs located
in a densely-concentrated area and EMI can be especially
difficult to eliminate. Automakers spend time, money, and
effort trying to achieve low EMI as they experiment with
different layouts and filtering methods.
The MAX20078 provides ultra-fast response times
enabling smoother transient responses. While eliminating
the need for external compensation components, it also
offers a wide dimming ratio and features both integrated
fault protection and monitoring circuitry. The MAX20078
allows for fast LED switching and low EMI so that
designers no longer need to sacrifice one for the other.
These benefits, along with simplified design and flexible
switching frequencies, allow designers to achieve faster
time-to-market.
Key Advantages
High Performance: Ultra-fast response times enable
advanced lighting designs
Ease of design: Low EMI; no compensation components
required; can be programmed using switching frequencies
from 100kHz up to 1MHz
Fast time-to-market: Integration of components and
programmable switching frequency for a simple, flexible design
Commentary
“We are enabling our customers to create faster, brighter,
and more stylish lighting with our latest products,” said Yin
Wu, Business Manager, Automotive, Maxim Integrated.
“The MAX20078 LED controller is a testament to our
continued innovation, as it is the only solution in the market
that combines the speed of a hysteretic buck controller with
the low switching noise of a fixed-frequency buck controller.”
Availability and Pricing
Pricing for MAX20078 and MAX20078EVKIT evaluation
kit available upon request
New family of maXTouch® touchscreen
controllers designed for large-screen automotive
HMI designs
Microchip announces a new family of maXTouch®
touchscreen controllers. The MXT1665T-A family of
automotive-qualified touchscreen controllers is designed for
large-screen automotive Human Machine Interface (HMI)
designs. The technology brings multi-touch HMI, such as
that experienced on a mobile phone, to car drivers and
passengers on screen sizes from 8 to 15 inches.
The MXT1665T-A family features Microchip’s adaptive touch
technology that uses self-capacitive touch as well as mutual-
capacitive touch scanning. This combination provides a
multi-touch experience even through thick cover lenses,
thick gloves or in the presence of moisture and water. The
product family is fully AEC Q100-qualified to address the
unique needs of automotive system designs.
The family complements the successful MXT641T-A
family of products and shares many of the same features
developed for the automotive industry. It also supports larger
screen sizes above 10 inches in addition to smaller multi-
finger pinch separation.
The wide range of screen size options within Microchip’s
touchscreen controller families enables greater scalability
and helps to shorten design time as well as lower system
and development costs.
The MXT1665T-A family consists of three controllers: the
MXT1665T-A supports 1664 touch-node sensors; the
MXT1189-A supports 1188 touch-node sensors; and the
MXT799T-A with support for 798 touch-node sensors.
A designated evaluation kit is available for each of the parts
in the MXT1665T-A family. Each kit includes a PCB with
maXTouch controller; a touch sensor on a glass/plastic lens;
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