Automotive

EDN Staff

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.

Smart automotive infrastructures of the future

Smart solar roadways and intersections are infrastructural entities that our future cities will have; here's how they will work. Read More...

Tesla's Autopilot: setting expectations ... or not

Fully autonomous driving may be the future, but it's definitely not the present, and Tesla’s branding is causing dangerous situations. Read More...

Why have an internal cal lab?

Internal calibration labs can save money and you can get better service, but there is a significant up-front cost. Read More...

Despite Tesla accidents, autonomous vehicles are closer than they appear

While accidents in Tesla vehicles cast clouds on autonomous driving, a quick look at our own driving habits and needs shows that autonomous vehicles are closer than they appear. Read More...

Autonomous automotive sensors: How processor algorithms get their inputs

Sensor electronics combined with better and more refined software algorithms will ultimately enable a safe fully-autonomous vehicle within the next ten years. Read More...

Driverless trucks: ROI triggers in IoT adoption

Driverless trucks are a great candidate to kick off the wave of driverless vehicles. Read More...

Devkit for vision-based ADAS

A Zynq-based ADAS vision devkit includes drowsiness-detector IP. Read More...

USB oscilloscopes add waveform generators

TiePie Engineering has added a waveform generator to its line of USB oscilloscopes, which the company claims is a unique design. Read More...

Why are 19-in. racks that size?

How did we settle on 19 in. as the standard size for an instrument rack? Read More...

Modular AWGs: How they work and how to use them

Arbitrary waveform generators are inverse digitizers; the results you get depend on how you use them. Read More...

DAC 2016 in pictures

The buzz from the 53rd DAC in Austin. Read More...

Proper oscilloscope setup yields correct ESD measurements

To get the right measurements of ESD pulses, you need to set trigger levels properly and use as much of the ADC as possible. Read More...

Sensing current on the high side

Here are some ways to sense current in a supply rail, which requires care to do right. Read More...

EDN turns 60, help us celebrate

EDN began life as Electrical Design News on May 8, 1956. Here's what to expect over the coming months as we celebrate the publication. Read More...

Partial and Pretended Networking Reduces CAN Power Consumption

Saving power by turning off subsystems is a challenge for CAN networks, until you redefine the network a little. Read More...

>> SEE ALL

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...

>> SEE ALL

USB oscilloscopes add waveform generators

TiePie Engineering has added a waveform generator to its line of USB oscilloscopes, which the company claims is a unique design. Read More...

LED headlight connector mates securely

The single-row, wire-to-board MiniBridge Koshiri connector from ERNI improves mating integrity in intelligent LED headlight systems. Read More...

AEC-Q100 buck regulators perform POL conversions

Three synchronous step-down regulators, the ISL78233, ISL78234, and ISL78235 from Intersil deliver 3 A, 4 A, and 5 A, respectively. Read More...

Welcome back to The EMC Blog, now with Magic!

The EMC Blog is back as Dr. Atruro Mediano begins to take engineers down the path to minimizing emissions and immunity. Read More...

36-V op amps reduce supply-current needs

The dual TSB572 and single TSB611 BiCMOS op amps from STMicroelectronics have a wide supply range and tolerate ESD up to 4 kV HBM. Read More...

Instruments vary insulation test voltage

Insulation testers in Megger’s MIT400/2 series offer a user-variable range that allows any test voltage from 10 V to 1000 V in 1-V steps. Read More...

Buck regulator powers infotainment systems

AEC-Q100-qualified, the A8591 2-A buck regulator from Allegro MicroSystems provides an output voltage that is accurate to within ±1%. Read More...

View signals in time and frequency

Rohde & Schwarz' RTO2000, is a compact lab oscilloscope for multi-domain applications, letting you see correlations between time, frequency, protocol and logic analysis measurement results. Read More...

Dynamic Envelope Tracking in a power supply for the automotive market

A new solution can efficiently and effectively handle any and all available automotive voltages of 24V/36V and 48V in automotive power systems in a single design. Read More...

NFC transponder teams with automotive SoCs

A dynamic NFC transponder from Texas Instruments, the RF430CL330H-Q1, is AEC-Q100-qualified for use in automotive infotainment systems. Read More...

Ethernet chip meets automotive EMC requirements

The KSZ8061 10Base-T/100Base-TX Ethernet PHY transceiver from Microchip employs programmable EMI filtering to reduce line emissions. Read More...

Automotive-grade inductors take the heat

Offering inductance values from 0.22 µH to 33 µH, Vishay Dale’s IHLP inductors withstand continuous operating temperatures of up to 180°C. Read More...

In-mold electronic inks enable control integration

DuPont Microcircuit Materials is launching a suite of in-mold electronic inks designed to help streamline electronic devices by reducing the need for rigid circuit boards. Read More...

LTE modems come in small LGA packages

Swiss manufacturer u-blox offers LTE low-date-rate cellular modules for IoT and M2M designs in the industrial and automotive markets. Read More...

Quad deserializer eases automotive camera design

A single MAX9286 GMSL deserializer from Maxim receives and automatically synchronizes video streams from up to four cameras. Read More...

LDO regulator is qualified for automotive designs

Housed in a tiny 2×2-mm, 6-pin DFN package, the MAQ5300 voltage regulator from Micrel boasts a dropout of only 100 mV at 300 mA. Read More...

Automotive 42V, Quad Output Synchronous Step-Down Regulator, IQ of 30uA

Modern automotive power management ICs continue to require higher performance. As the power requirements for these applications continues to grow, the available space for power conversion solutions continually shrinks requiring even higher power densities. Furthermore, the required electrical performance criteria of these switching regulators becomes more demanding. Offering four independent outputs in the same solution footprint as many single output devices becomes desirable in many applications. Read More...

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...

>> SEE ALL

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...

>> SEE ALL

Autonomous automotive sensors: How processor algorithms get their inputs

Sensor electronics combined with better and more refined software algorithms will ultimately enable a safe fully-autonomous vehicle within the next ten years. Read More...

Modular AWGs: How they work and how to use them

Arbitrary waveform generators are inverse digitizers; the results you get depend on how you use them. Read More...

Proper oscilloscope setup yields correct ESD measurements

To get the right measurements of ESD pulses, you need to set trigger levels properly and use as much of the ADC as possible. Read More...

Partial and Pretended Networking Reduces CAN Power Consumption

Saving power by turning off subsystems is a challenge for CAN networks, until you redefine the network a little. Read More...

SiP package styles for magnetic position sensors have benefits for automotive applications

This article examines the case for using a complete MPOS system produced as a system-in-package, thus relieving the automotive supplier of the need to produce a PCB assembly when implementing magnetic position sensing. Read More...

Avoid these common MEMS failure mechanisms

MEMS adoption is on the rise, and knowing how they might fail is the first step in ensuring their reliability in a design. Read More...

Wireless charging for electric vehicles

Wireless charging has been around for years in low-power consumer applications, but finally the future is looking brighter for its use with electric vehicles. Read More...

Control individual LEDs in matrix headlights with integrated 8-Switch flicker-free driver

LEDs combine design flexibility with practical, robust circuitry, enabling automotive designers to produce striking headlight designs matched by exceptionally long life and performance. Automobile designers are increasingly incorporating LEDs in lighting because they can be arranged in distinctive eye-catching designs—helping distinguish new models from old, or high end from economy. Read More...

Oscilloscopes detect ECU disturbances from EMI

Engineers at Hitachi use oscilloscopes to monitor the health of engine-control units during immunity tests, but such tests require isolated signals. Read More...

Wide input range 1A LED driver powers high brightness LEDs with automotive and 12VAC supplies

The LT3474 LED driver allows today’s ultrabright LEDs to far exceed the performance of incandescent bulbs in both efficiency and lifetime. Read More...

Rotary position sensing for electric vehicles, part II

In part II of this series on electric vehicle rotary position sensing we discuss the robustness of position sensing. Read More...

Not your father's electric vehicle – The technology that powers Formula E

Electric vehicles are widely forecast to be the future of transportation – and now they have their own racing series. Formula E is a groundbreaking FIA single-seater championship and the world's first fully-electric racing series. Read More...

General Motors chooses ultracapacitors for start-stop

Ultracapacitors have found their way into the automotive ecosystem in areas such as regenerative braking, start-stop systems, active suspension systems, voltage stabilization, electric turbochargers, and more. Read More...

>> SEE ALL

Thermocouples: Basic principles and design essentials

It takes carefully designed and implemented circuitry to design a high-accuracy thermocouple interface. The first step is to understand the underlying physics principles of this widely used temperature sensor. Read More...

Tesla's Autopilot: setting expectations ... or not

Fully autonomous driving may be the future, but it's definitely not the present, and Tesla’s branding is causing dangerous situations. Read More...

The homes of EDN

Take a tour of EDN's office locations through the years, including the home of the print collection. Read More...

Despite Tesla accidents, autonomous vehicles are closer than they appear

While accidents in Tesla vehicles cast clouds on autonomous driving, a quick look at our own driving habits and needs shows that autonomous vehicles are closer than they appear. Read More...

Driverless trucks: ROI triggers in IoT adoption

Driverless trucks are a great candidate to kick off the wave of driverless vehicles. Read More...

Why are 19-in. racks that size?

How did we settle on 19 in. as the standard size for an instrument rack? Read More...

DAC 2016 in pictures

The buzz from the 53rd DAC in Austin. Read More...

Sensing current on the high side

Here are some ways to sense current in a supply rail, which requires care to do right. Read More...

EDN turns 60, help us celebrate

EDN began life as Electrical Design News on May 8, 1956. Here's what to expect over the coming months as we celebrate the publication. Read More...

Simulate automotive electrical noise on the bench

The AING-5000 series from Spirent Communications lets you inject interference into automotive Ethernet links for testing engine control units. Read More...

>> SEE ALL

FEATURED RESOURCES