Power Management

Steve Taranovich
Editor
In-depth technical information, product advancements, and industry news for engineers responsible for designing, specifying, or selecting power sources for electronics applications. Topics include power supplies, power management and regulation components, batteries, digital power, and alternative energy technology.

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...

Steve Sandler: Give back more than you take in engineering

What motivates an engineer to teach? Here’s a look at what makes Steve Sandler, the 2015 winner of the Jim Williams Contributor of the Year Award ACE Award, give more back to engineering than he has taken. 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...

Powering the European Space Agency (ESA) ExoMars Rover

The European Space Agency (ESA) developed the ExoMars Rover, a six-wheeled vehicle packed with instrumentation and subsurface drilling capability to collect and analyze Martian soil and rock materials for exobiology and geochemistry. This is called the Pasteur payload for the ExoMars Programme. 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...

Book Review: Efficient Power Conversion Corporation (EPC) Wireless Power Handbook

There are many good books and papers regarding wireless power out there in this fast-growing, relatively new industry. What makes author Michael de Rooij’s technical handbook different than the others is that it is a treatment of one of the biggest challenges in this industry---Creating the optimal amplifier design for this architecture Read More...

Celebrate Pluto and Apollo

The anniversary of the first moon landing and the Pluto flyby provides the perfect opportunity to highlight EDN's space coverage over the years. Read More...

AC/DC power supply performance and international efficiency standards

With the increasing restrictiveness of international power supply efficiency standards, power supply controllers are being pushed to their cost-performance limits. Meeting these new standards while keeping performance high and cost low, has forced the market to move to disruptive new technologies. Read More...

Wurth Elektronic application note for power modules input filters

Independent of their individual topology and application, due to AC components in their lines switching controllers create conducted EMC interferences. Read More...

Probe adapters simplify interfacing Teledyne LeCroy oscilloscopes

Adapt probes from Tektronix with the TPA 10 to Teledyne LeCroy oscilloscopes. Use the CA 10 to adapt third-party current probes. 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...

Power analyzer gets accuracy boost

The WT3000E from Yokogawa improves on measurement accuracy over its predecessor and is now at 0.04% at 60 Hz. Read More...

Maximizing cell monitoring accuracy and data integrity in energy storage Battery Management Systems

Grid-connected battery arrays are viable backup and carry-through power sources; application-specific measurement ICs which meet their unique and sophisticated requirements ensure reliable system performance. Read More...

Perform power measurements with modular digitizers

This article addresses making basic power measurements in AC circuits and devices using a modular digitizer. Read More...

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AC power measurement uses PWM & PAM

Use clever pulse modulation techniques to multiply signals and measure power. Read More...

LTC Design Note: 10A μModule step-down regulator with advanced input and load protection

This switcher design has comprehensive electrical and thermal protection, and high efficiency over wide input-output ranges. Read More...

LTC Design Note: Monolithic no-opto isolated flyback converter provides versatile solution

This versatile chip handles flyback, buck, boost, and negative input, and features low standby current and up to 18W output. Read More...

LTC Design Note: Dual 13A μModule regulator with digital interface for remote monitoring & control of power

Digital power system management (PSM) enables on-demand telemetry capability to set, monitor, change, and log power parameters of dual high-current parallelable regulators. Read More...

MOSFET-based Joule Thief steps up voltage

This Design Idea illustrates a novel approach to the Joule Thief circuit. Read More...

Simple SSR has zero-cross on/off switching

This AC solid-state relay enables zero-cross switching with quite a simple design. Read More...

Transient load gives power systems a workout

Verify power supply performance with this transient load generator. Read More...

Series-connected MOSFETs increase voltage & power handling

A constant-current charger for a high-energy capacitor bank uses multiple MOSFETs to increase voltage and power-handling capabilities. Read More...

Sleep easy with this desk fan speed reducer

This innovative AC motor control skips cycles. Read More...

LTC Design Note: Versatile industrial power supply takes high voltage input and yields from eight 1A to two 4A outputs

This ultra-flexible, highly-featured switching regulator IC might be perfect for your next complex and/or industrial design. Read More...

Flyback switcher works down to 1.1V, flashes HBLEDs

Check out this DI if you need voltage step-up from a single cell. Read More...

Load switch with self-resetting circuit breaker

Protect both load and driver with this elegant little Design Idea. Read More...

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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...

Power supplies achieve 2 MOPP safety approval

Recom offers the RACM100 and RACM150 series of AC/DC medical power supplies, which furnish up to 135 W of output power without forced-air cooling. Read More...

AC/DC supplies offer medical-safety certification

Single-output and dual-output AC/DC power supplies in the MPM-40Mx series from MicroPower Direct deliver 40 W of output power. Read More...

650-V IGBTs optimize 20-kHz hard-switching tasks

Currently available with current ratings of 10 A and 30 A, STMicroelectronics’ M-series of 650-V IGBTs enables efficient motor control. Read More...

Buck battery charger handles multiple chemistries

The LTC4015 synchronous step-down battery charger controller from Linear Technology offers charge current of up to 20 A. Read More...

DC/DC converters work downhole at 185°C

Infineon company IR HiRel offers the HTB28 series of hybrid DC/DC converters designed specifically for oil and gas exploration downhole tools. Read More...

PoE controllers deliver up to 90 W to PD loads

Powered-device interface controllers in the LT4276 family from Linear Technology support forward and flyback power-supply topologies. Read More...

High-rel 150-W converters sport ¼-brick package

With a 5:1 low-voltage input range, the MGDS-155 series of quarter-brick DC/DC converters from Gaia suits many defense/aerospace applications. Read More...

Buck converter is pin-programmable

The MIC24046-H 19-V, 5-A synchronous step-down regulator from Micrel offers pin-selectable output voltage, switching frequency, and current limit. Read More...

Probe adapters simplify interfacing Teledyne LeCroy oscilloscopes

Adapt probes from Tektronix with the TPA 10 to Teledyne LeCroy oscilloscopes. Use the CA 10 to adapt third-party current probes. Read More...

Step-down regulator supplies 13 A to 100 A

Available in dual 13-A and single 26-A configurations, the LTM4676A DC/DC regulator from Linear Technology is current-shareable up to 100 A. Read More...

2×4-in. AC/DC supplies pack 225 W of power

Open-frame AC/DC supplies in the EPL225 series from XP Power are well-suited for space-constrained industrial, IT, and medical applications. Read More...

Brushed DC gate driver enables scalable designs

With its adjustable gate drive, the DRV8701 from Texas Instruments can be used with a wide range of external FETs. Read More...

Power analyzer gets accuracy boost

The WT3000E from Yokogawa improves on measurement accuracy over its predecessor and is now at 0.04% at 60 Hz. Read More...

Supercap charger operates bidirectionally

A 2-A buck-boost DC/DC regulator and capacitor charger, the LTC3110 from Linear Technology switches autonomously between charge and backup modes. Read More...

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Teardown: Apple iPhone 6 Plus battery

A look at Apple's iPhone 6 battery helps nail down the one variable that determines manufacturing cost. Read More...

Teardown: Cell-phone charger: nice idea done right

The Mophie juice pack powerstation mini smartphone and USB-device battery charger demonstrates the ability to provide more than twice the battery life to your smartphone while still keeping a low-profile shape that slips right into your pocket. Read More...

Teardown: Gigabit Ethernet switch shut down by lightning strike

A lightning bolt-generated EMP may have entered through the switch's port(s) and KO'd the controller inside. What are your theories? Read More...

Teardown: Samsung Galaxy S4

TechInsights examines the innards of Samsung's latest and greatest smartphone. Read More...

Cell-phone charger: nice idea, bad implementation

Now and again you come across a device that’s so simple, useful, and functional that you’re glad to add it to your already-overladen workbag; that is, until it breaks, for the dumbest of design reasons. Read More...

Teardown: The power inverter - from sunlight to power grid

This teardown of a solar inverter card traces the path of harvested DC power from the photovoltaic panel, through boost conversion, power inverter and massive filtering of the created AC power signal required by the power grid. Surrounded by monitoring and microcontroller magic along with safety standard adherence, we uncover the mysteries of solar energy harvesting electronics. Read More...

Evaluate your application's energy-harvesting vibrational profile with a Slam Stick

To know whether your application is suitable for vibrational energy harvesting, you must determine its vibrational profile. Mide Technology's Slam Stick data logger and open-source software can ease your profiling task. Read More...

What's inside a smart meter? iFixit tears it down

When iFixit's Kyle Wiens had the opportunity to tear down an Elster smart meter, he jumped at it—not to come up with a repair manual but to evaluate the health and safety issues that seem to surround the utilities’ installation of smart meters. Read More...

Simple battery technology packs in more features with complex chemistries

The basic components are the same across all rechargeable lithium-ion cells, the workhorses of portable energy storage. Read More...

Way, way off the grid: Powering the Phoenix Mars lander

Prying Eyes: An inside look at the power-generation, -regulation, and -delivery system for the Phoenix Mars lander. Read More...

>> SEE ALL

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...

Sensor Ganging--Optimize Power in a Capacitive Sensing System—Part III

In this final segment, we will cover sensor ganging implementation and more techniques to optimize power consumption. Read More...

Serial vs. Parallel interface SRAMs—A Comparison

In high-performance applications where SRAMs are used, a parallel interface has considerable advantages over serial interface options. However, the status quo is about to change. Read More...

Steve Sandler: Give back more than you take in engineering

What motivates an engineer to teach? Here’s a look at what makes Steve Sandler, the 2015 winner of the Jim Williams Contributor of the Year Award ACE Award, give more back to engineering than he has taken. Read More...

Powering the European Space Agency (ESA) ExoMars Rover

The European Space Agency (ESA) developed the ExoMars Rover, a six-wheeled vehicle packed with instrumentation and subsurface drilling capability to collect and analyze Martian soil and rock materials for exobiology and geochemistry. This is called the Pasteur payload for the ExoMars Programme. 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...

Book Review: Efficient Power Conversion Corporation (EPC) Wireless Power Handbook

There are many good books and papers regarding wireless power out there in this fast-growing, relatively new industry. What makes author Michael de Rooij’s technical handbook different than the others is that it is a treatment of one of the biggest challenges in this industry---Creating the optimal amplifier design for this architecture Read More...

AC/DC power supply performance and international efficiency standards

With the increasing restrictiveness of international power supply efficiency standards, power supply controllers are being pushed to their cost-performance limits. Meeting these new standards while keeping performance high and cost low, has forced the market to move to disruptive new technologies. Read More...

Wurth Elektronic application note for power modules input filters

Independent of their individual topology and application, due to AC components in their lines switching controllers create conducted EMC interferences. Read More...

Maximizing cell monitoring accuracy and data integrity in energy storage Battery Management Systems

Grid-connected battery arrays are viable backup and carry-through power sources; application-specific measurement ICs which meet their unique and sophisticated requirements ensure reliable system performance. Read More...

>> SEE ALL

Advanced WEBENCH tools for expert power-supply designers

I have always had great respect for WEBENCH since the day it was introduced on February 17, 1999 by National Semiconductor. It has come a very long way since then, especially since TI merged with National and has valued and improved the WEBENCH solution as an important part of its portfolio. Read More...

Celebrate Pluto and Apollo

The anniversary of the first moon landing and the Pluto flyby provides the perfect opportunity to highlight EDN's space coverage over the years. 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...

GaN technology and the potential for EMI

While attending DesignCon 2015 last January, I had the chance to hear an interesting keynote presentation by Alex Lidow, CEO of Efficient Power Conversion, Inc., speak on the upcoming development in gallium nitride (GaN) technology for high-power switching devices. Because these devices switch at sub-picosecond speeds, there are EMI ramifications. This article evaluates a simple half-bridge DC-DC converter using GaN switching. Read More...

Dave Freeman: Colleague and mentor

TI’s Dave Freeman, a power mentor and EDN contributor, has passed away. 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...

Keeping smart lamps “Energy-Efficiency Smart”

Watch out – that smart light bulb you just purchased may not be so smart after all. Read More...

imec Power Model Minimizes Power Consumption of Mobile Networks

Data traffic is increasing sharply, new applications and services are heavily driving energy consumption; networks are optimized for capacity not energy. Read More...

Rogue waves can ruin your power

In this video, Steve Sandler explains why power distribution networks need flat impedance to avoid creating unwanted resonant signals. Read More...

2015 Mergers, acquisitions and change in the global electronics industry

Recent big deals are changing the face of electronics globally. 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...

New house brings electric woes

A move to a new old house means mastering new systems, and, FIXING THE ELECTRICS BEFORE WE ALL DIE! Read More...

Microchip acquisition of Micrel: Sanghi and team make a calculated, bold move

Steve Sanghi, President and CEO of Microchip has made many successful acquisitions to strengthen and broaden his company’s product portfolio, especially in the analog area. Read More...

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