Automotive

Carolyn Mathas
Editor
Cars have become computers on wheels, with more and more automotive design being driven by electronics. Stay up to speed on automotive design with this site. Topics discussed include hybrid and electric vehicles (EVs), infotainment, safety systems, solid-state lighting, powertrain, x-by wire, Human Machine Interface (HMI), telematics/in-vehicle navigation, and more.

Don't Get Stuck At The Light – Start-StopTechnology And Battery Management

Turning off the engine at a stop light. What could possibly go wrong? Read More...

Cloud EDA & DAC 2015 wrap-up

A DAC 2015 product wrap-up, including more cloud-based EDA and advanced silicon enablement. Read More...

OLEDs & on-shoring, LED streetlights: marvel or menace? LED-lit artificial skies

America's only OLED lighting fab adds 100 jobs, TI's DLP dev kit makes it easier than ever to develop LED-powered screenless TVs, interactive displays, and wearables, and Coelux's digital sky products top of the list of must-have accessories for any Billionaire's dream house (or their worst-case scenario underground bunker). All this and more rumor, innuendo and Lumen Lust in this week's Semi-Coherent Emissions. Read More...

Oscilloscopes get CAN FD bus trigger

New features in Keysight's midrange oscilloscopes let you decode and analyze the signals in the latest version of the popular automotive data bus. Read More...

LVDS display bridges and automated measurements, part 1

OpenLDI modules control displays in vehicles and their components need characterization. In part 1 of 2, we discuss the fundamentals of LVDS signals, the information they carry, and the components needed to drive displays. Read More...

Vacuum improves 3-d vapor-phase soldering process

By using vapor phase soldering in combination with in-situ vacuum, geometry-related deviations in the temperature profiles can be eliminated, in addition to other improvements, like reducing void content & void count. Read More...

Why is the so-called Smart World still so stupid?

According to Cees Links, if you take a careful look at what is really happening – if you actually count up the number of homes that actually are “smart” – having intelligent systems installed within them that actually make our lives smarter, easier and safer, you will see that the number is actually pretty small. Read More...

DAC52 Cometh

DAC (the Design Automation Conference) is right around the corner, and I'm going. Here's a brief preview of what I expect to see, so chime in with suggestions. Read More...

Which software automates your tests?

A poll on EE Times asks which of several software packages engineers use to automate tests. Tell us which you use. Read More...

Reverse bias techniques for high-end automotive microcontrollers & low leakage

A reverse-bias technique to reduce leakage, especially at high temperature (e.g., automotive). Read More...

Security architecture for automotive microcontroller flash memory

Read about various ways flash memory can be secured against malicious or accidental modification. Read More...

Signal analyzer measures 64 IEPE channels

Connect IEPE accelerometers directly to the Data Translation VIbox, then analyze sound and vibration signals. Read More...

How soft errors damage vital information

Here is how soft errors occur and how they can cause damage to critical data stored in semiconductor memories. The article covers the sources and the likelihood of their occurrence and explains how they impact individual memory cells, causing them to change state Read More...

7 data-acquisition systems attach directly to sensors

When assembling a data-acquisition system, be sure to compare these systems that require no external signal conditioning. Sensors connect directly to the systems. Read More...

The NXP-Freescale merger—A $4 billion giant

The NXP/Freescale merger will create a giant expected to hog the road and market share for automotive systems. Read More...

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Antilog converter linearizes carbon dioxide sensor

Simplify gas sensor interface with some analog preprocessing. Read More...

LTC Design Note: 65V 500mA step-down converter fits automotive and industrial applications

This switcher is happy to drop a 60V input all the way down to 0.8V. Read More...

Inductively sense aircraft engine valve position

Aircraft engine designers are conservative by nature, but here's a way to improve performance anyway. Read More...

Design Notes: 42V 2.5A Synchronous Step-Down Regulator with 2.5μA Quiescent Current

This efficient solution allows for small inductors and high switching frequency. Read More...

Precision capacitance meter

There's an art to capacitance measurement. What do you think of this rendition? Read More...

Sense automobile high-side current with discrete components

Use this circuit to convert a current into a voltage for measurement. Read More...

Current monitor uses Hall sensor

Use a Hall-effect sensor to measure dc current in the range of 0 to 40A. Read More...

Simple circuit helps to protect a vehicle-reverse camera

Add a delay to prevent short power pulses as you shift through reverse. Read More...

Solar-powered sensor controls traffic

A traffic-sensor post measures vehicle location and speed at an intersection, providing an accurate, effective, inexpensive approach to monitoring traffic flow. Read More...

Power USB devices from a vehicle

Supply power to two USB devices from the cigarette lighter or other power source. Read More...

Automotive switching regulators get input-transient-voltage protection

A simple scheme protects switching regulators against 50V voltage transients in automotive applications. Read More...

Automotive link uses single wire

In the automotive industry, in which the goal is to produce cars with simpler, lighter wiring looms, any interface that uses just one wire instead of two offers a distinct advantage. The circuit in Figure 1 implements a bidirectional link using a single wire, with the car's chassis or ground conductor providing a negative return path. Read More...

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Surface-mount LED chip array offers lower solution costs, higher light quality

Aimed at reducing assembly and optic design costs of retrofit bulbs and lighting equipment, Osram Opto Semiconductors' Duris S 10 Chip Array SMD (CAS) boasts high efficiency, high light output and uniform color appearance. The LED’s compact 7.7mm light-emitting surface enables compact optics with beam angles as narrow as 120° and helps simplify the integration of lenses, reflectors and other standard accessories. Read More...

High-performance LEDs aim at halogen spotlight applications with 90 CRI, halide-like R9 values, 140Lm/W

One of the reasons I attended Lightfair last month was to get a firsthand look at Cree's new TrueWhite® LEDs which the company claims are able to rival the light quality of a traditional ceramic metal halide (CMH) bulb. The short answer was that I was tickled at the "near-halogen experience" TrueWhite appears to deliver. There's also a slightly longer answer which I'll get to after a quick review of what Cree says about its devices. Read More...

Oscilloscopes get CAN FD bus trigger

New features in Keysight's midrange oscilloscopes let you decode and analyze the signals in the latest version of the popular automotive data bus. Read More...

Video decoder simplifies backup camera designs

Eliminating the need for an external op amp, the TW9992 analog video decoder from Intersil accepts both single-ended and differential CVBS inputs from a vehicle’s backup safety camera, reducing system cost and saving board space. Read More...

Samsung's Mid-Power flip-chip LEDs foreshadow a larger battle ahead

Samsung's recently announced family of flip-chip mid-power LEDs and aggressive roadmap for its chip scale packaging technology are both signs that the Korean electronics giant intends to defend its market share against growing competition. Read More...

Buck controller allows 48V to 1V direct step-down

By eliminating the intermediate conversion step, this controller helps simplify distributed power system design. Read More...

Signal analyzer measures 64 IEPE channels

Connect IEPE accelerometers directly to the Data Translation VIbox, then analyze sound and vibration signals. Read More...

LED light guides deliver affordable OLED-like performance

Sleek, stylish and seductively luminous, OLED panels' silky, eerily-even glow has made them a favorite for fashion-forward lighting designers, even though they cost more, were shorter lived, and more easily damaged. This may change however, as Global Lighting Technologies' (GLT) introduces a growing number of products based on its edge-lit LED-based light guide technology. Read More...

MOST150 controller affords smart-antenna module connectivity

Compliant with the recent release of the MOST150 coaxial physical-layer specification, Microchip’s OS81118AF INIC (intelligent network interface controller) enables smart-antenna module connection to in-vehicle MOST150 ADAS (advanced driver assistance system) and infotainment networks. Read More...

High-speed RAM leverages HyperBus interface

High-speed, low pin-count RAM suits pin-limited microcontrollers Read More...

Vision MPU SoC surpasses existing driver assist on the road to full autonomy

Freescale upped the ante, launching a groundbreaking S32V234 vision system-on-chip (SoC) that moves the automotive industry from addressing convenience closer to taking over the wheel. Read More...

Silent Switcher with high efficiency and low EMI/EMC

The latest automotive electronics boom has added many new features to engine control, entertainment, safety systems and more. In this very harsh environment that an automobile will experience, there are stringent features that need to be a part of any electronics devices is the system. Read More...

Two-string HB automotive LED driver provides 10000:1 dimming ratio

For use in automotive display backlights, automotive lighting applications and LCD backlights, Maxim has posted detail of the MAX16838B which it says is the only-available 2-String HB LED driver providing 10000:1 dimming ratio. Read More...

Triple LED controllers for rear lights

The IC family E522.80/81/82/83 from Elmos AG is an LED controller device, designed for applications like automotive rear lights. The devices offer three channels each, with a maximum current of 140 mA. Read More...

Tact switch combines resilience, excellent operating feel

In response to the strict robustness and resilience requirements in the automotive industry, component manufacturer, ALPS Electric has developed and commenced mass production of the SKTH Series TACT Switch. Read More...

EDN Hot 100 products of 2014

Of the many thousands of products announced during the past year, these are 100 that especially caught the attention of our editors and our readers. Read More...

Auto-grade photovoltaic MOSFET driver debuts at Electronica

Avago launches a photovoltaic MOSFET driver qualified to AEC-Q100 Grade 1 test guidelines, making it the first such device usable in "under-the-hood" high-temperature automotive applications. Read More...

CogniVue, Fraunhofer debut supersmall camera at Electronica

Fraunhofer's driver-assist microcamera, exhibited at Electronica in Munich, uses CogniVue's image processing technology and a Freescale Semiconductor image cognition processor based on CogniVue's IP. Read More...

Freescale brings the Internet of Things to a safer vehicle

Two recent announcements by Freescale ensure the reality of an IoT car and a safer vehicle through tire-pressure sensing. Read More...

TI DRA75x processors blur the line between infotainment and informational ADAS

“Jacinto 6 Ex” improves performance and integration with the use of two embedded vision engines (EVEs) to deliver simultaneous informational ADAS and infotainment functionalities without compromise to either system. Read More...

TI drives ADAS into entry and mid-level cars

Advanced driver assistance systems (ADAS) have been, to date, offered in high-end luxury cars where the vehicle’s price tag warrants the added expense. Read More...

Linear Technology 2A buck converter is 93% efficient at 2MHz

With many switching buck regulators on the market today that are capable of improving an automotive system design it is hard to choose the optimum one for your design. Read More...

Software turns oscilloscope to motor-drive measurements

Teledyne LeCroy's HDO8000 12-bit oscilloscope now has software specifically for measuring power and efficiency on three-phase motor drives, variable-frequency drives, and the electronics that power them. Read More...

MAX10 broadens the FPGA field

Altera's MAX series has graduated from CPLD to FPGA, and sports some unique features. Read More...

500 MHz Oscilloscope for $5000 and a touch screen, too

Teledyne LeCroy's WaveJet Touch brings touch screens to a basic oscilloscope. Read More...

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Teardown: Heads-up thermal imaging camera

Wow, thermal imaging in the car. Read More...

Teardown: Airbag controller

Check out this airbag controller teardown, courtesy of Dave Jones from the EEVblog. Read More...

Teardown: OBD-II Bluetooth adapter

Peer inside an unbelievably low-cost OBD-II to Bluetooth "dongle." Read More...

Teardown: High-voltage Li-ion battery stack management - the drive for safe power

At the heart of the Chevrolet Volt, a sophisticated Li-ion battery stack management system ensures the safety and reliability of a multi-cell Li-ion battery stack capable of delivering power on demand to the Chevy Volt drive system. Read More...

Teardown reveals Chevy Volt's electronic secrets

Beyond battery chemistry and electric propulsion and control, the Chevy Volt enhanced-range electric vehicle builds in flexibility, ruggedness, and diagnostics—with attention to quality construction. Read More...

Bulldog Security RS82B remote-vehicle-starter system

Microprocessor-controlled relays let you start your car 100 yards away. Read More...

The Tesla Roadster: Sporty and electric

Prying Eyes: A modern electric sports car presents a unique design challenge. Read More...

The 24V, 300W, BLDC Kollmorgen motor integrated controller

A motor mixes mechanical and electrical beauty with questionable thermal design. Read More...

Under the hood of hybrid vehicles

Energy- and emission-efficient automobiles are increasingly relying on both combustion engines and electric motors for power. Read More...

Hybrids mark the end of the stinky city bus

Prying Eyes looks inside a hybrid gas-electric bus powered by 288 ultracapacitors. Read More...

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Don't Get Stuck At The Light – Start-StopTechnology And Battery Management

Turning off the engine at a stop light. What could possibly go wrong? Read More...

Troubleshoot errors in low-voltage measurements

You can often characterize sources of low voltage errors by conducting a variety of experiments with analog filters, digital filters, and integration while digitizing from the actual sensor, a dummy cable/resistor, and a grounded input. Read More...

A low-cost 0.5A 33V LED driver module with 90+% efficiency

This article describes simple constant current driver module with fast PWM input that can be used for driving medium and high power LEDs. The module uses an integrated constant-current output, DC-DC buck converter with output current configurable from 0.1 to 0.5 A. Read More...

Triple LED driver supports LCD backlights in buck, boost or buck-boost modes, delivers 3000:1 dimming ratio

This chapter explores how the LT3496 can be used to drive multiple LED strings in buck, boost, SEPIC or buck-boost modes. You'll learn how to use the features of the device's three independent drivers to implement solutions for driving multiple LED strings which are efficient, color-accurate, compact and cost-effective. Read More...

Address E-band cost and reliability issues in MMIC packaging

High component cost and low production yield limit E-band usage in applications like 77-GHz collision-avoidance systems to luxury cars; a new approach can change that. Read More...

LVDS display bridges and automated measurements, part 1

OpenLDI modules control displays in vehicles and their components need characterization. In part 1 of 2, we discuss the fundamentals of LVDS signals, the information they carry, and the components needed to drive displays. Read More...

Why is the so-called Smart World still so stupid?

According to Cees Links, if you take a careful look at what is really happening – if you actually count up the number of homes that actually are “smart” – having intelligent systems installed within them that actually make our lives smarter, easier and safer, you will see that the number is actually pretty small. Read More...

Constant-voltage topology and intelligent dimming drives LEDs efficiently

LEDs as light sources in luminaires seem an ideal match due to their high efficiency, small size, and greatly improved color quality, but incompatibilities between long-established TRIAC dimmers and the LED drivers has been a problem. New ICs with innovative topologies overcome these issues. Read More...

Analog Circuit Design, Part 5: Integrated 100V controller drives high power LED strings from just about any input

In this 5th installment, we'll look at a versatile driver circuit which can play a variety of roles in LED lighting applications. Its topology-agnostic architecture can be configured to operate in nearly any topology, enabling it to be used in boost, buck-boost mode, buck mode, SEPIC, flyback and other topologies. Read More...

Reverse bias techniques for high-end automotive microcontrollers & low leakage

A reverse-bias technique to reduce leakage, especially at high temperature (e.g., automotive). Read More...

Parallel Operation Minimizes Temperature Rise in Synchronous 4-Switch Buck-Boost Converters

A single synchronous buck-boost DC/DC converter can deliver high power due to its synchronous switching topology, but eventually the switching and/or conduction losses at higher power can overwhelm a single converter with excessive board heating. Although heat can be mitigated with bulked up heat sinks, additional external gate drivers, and/or forced airflow, it may be better to simply tie together two or more converters in parallel to spread the load. This is easy to do with the LT3790 4-switch synchronous buck-boost DC/DC converter. Read More...

Reducing cost & complexity of LCD LED backlights with single-IC, single-inductor multi-string LED driver architectures

In his fourth installment we'll look a single-IC, single-inductor multi-string LED driver architectures which provide great savings in both solution cost and PCB real estate. For this tutorial, we'll use the LT3598 which can drive up to six strings of ten LEDs at up to 30mA per string and a built-in power switch. Read More...

Security architecture for automotive microcontroller flash memory

Read about various ways flash memory can be secured against malicious or accidental modification. Read More...

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Henry Ford is born, July 30, 1863

On this day in tech history, Henry Ford, founder of the Ford Motor Company and former chief engineer at the Edison Illuminating Company, was born. Read More...

Include a remote update boot loader: 5 reasons why

Your embedded system can benefit from remote update capability. Here's how. Read More...

Power tools, powerful schools and high-fashion light tape

This week's Semi-Coherent Emissions visits a LED-lit school which produces more power than it consumes, questions whether Connected Lighting will ever find its "killer app" and turns you on to one of the sexiest non-LED light sources ever invented. Read More...

Meetup at Maker Faire!

My Smart Hat just reminded it's time to invite you to our 2nd annual Reader/Editor Meet-Up at the NY Maker Faire, held Sept. 26 & 27, at the New York Hall of Science. Please join me, and your fellow EDN readers for fun, fellowship and a chance to go backstage at some of the Faire's most interesting exhibitors. Read More...

Powering the autonomous car

The sensors and algorithms of the driverless car get lots of attention, but the equally important power requirements and subsystem remain much more of a mystery. Read More...

Top Ten Challenges for Solid-State Lighting: Flicker

Take a closer look at flicker, a hot-button topic these days, and one where LEDs tend to struggle. Read More...

Cloud EDA & DAC 2015 wrap-up

A DAC 2015 product wrap-up, including more cloud-based EDA and advanced silicon enablement. Read More...

DAC52 Cometh

DAC (the Design Automation Conference) is right around the corner, and I'm going. Here's a brief preview of what I expect to see, so chime in with suggestions. Read More...

ARM TechCon opens call for proposals

Proposals now being accepted for ARM TechCon 2015, which will take place November 10-12, 2015 Read More...

Engineering school never taught you this

In his presentation at the upcoming ESC Boston, Dave Nadler will show how failures can help point the way to success. Read More...

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