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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.

Soft management of power system hardware, a Product How-to

Power system architects and designers of digital ASIC/FPGA/microprocessor boards may be justified in being a little envious of their colleagues in software engineering if one were to consider the following advantages that the software team has over their hardware brethren. Read More...

Perform pass/fail tests with an oscilloscope

Eliminate downloading data and writing test code. Let the oscilloscope run the tests. Read More...

DC Power Transmission: War of Currents compromise

So much of what we have in industry and in our homes is powered by DC (Just look at what powers the ICs in 99.9 % of our devices, appliances, etc.) Read More...

Efficient Power Conversion (EPC) A4WP compliant Wireless Power Transfer Demonstration Kit

Efficient Power Conversion (EPC) told us, in their latest introduction of Wireless Power board demos, that EPC’s New ZVS Class-D Wireless Power Transfer System Demonstration Kits were coming soon---well, just a week later they introduce the EPC9111 and EPC9112 high efficiency wireless power transfer demonstration kit delivering 35 W and operating at 6.78 MHz. These products are complete demonstration wireless power transfer kits . Read More...

Transformer design: For which safety standards should you be concerned?

Understanding the requirements that govern transformer design and manufacturing will shorten design cycles to finished products using Fairchild parts in PSW. Read More...

Planet Analog’s next “Ask the experts” session on Switching power voltage regulators

On Wednesday, July 23, at 1:00 p.m. ET (10:00 a.m. PT), we will we will discuss Switching Regulators, which are at the heart of many designs, especially for their efficiency which extends battery life in portable applications. Our experts will help you understand the fundamentals of this basic architecture. Read More...

Analog Devices adds ADIsimPE to its tool arsenal for fast virtual prototyping

Analog Devices has launched the ADIsimPE™ (personal edition) simulator for Linear and Mixed Signal applications capable of virtual prototyping. Read More...

Efficient Power Conversion (EPC) eGaN wireless power transfer demo system

eGaN FETs with their low output capacitance, low input capacitance, low parasitic inductances, and small size make them a good choice for increasing efficiency in highly resonant, Rezence (A4WP) compliant, wireless power transfer systems. Read More...

TEG's potential: Is it real, a dream, or in-between?

As this advanced thermoelectric generation component shows, TEG is a viable energy-harvesting option, but its inherently low efficiency and low output voltage make using it effectively a significant challenge. Read More...

Linear Technology Two-Phase synchronous boost regulator with output disconnect

Linear Technology Corporation introduced the LTC3124, a dual-phase, 3MHz, current-mode, synchronous boost DC/DC converter with output disconnect and inrush current limiting. Read More...

Wurth Elektronik’s Wireless Power Coils

Wurth Elektronik expanded its Wireless Power Coil program with three transmitter coils and one receiver coil. Read More...

Solar highway facts and fallacies

The solar highway or solar roadway is a complex concept of solar energy architectures around and in the highway, road, and street infrastructure including adjacent areas along the side of the highways and on bridges and other associated structures. Read More...

Product How To: Calculate power with a scope

Teledyne LeCroy’s Art Pini explains the math behind automatic power calculations on an oscilloscope equipped with power analysis software. Read More...

Power supply oscillation

In a nutshell, the power supply problem was as sketched below. When it was assembled by that first company, it worked okay. When it was assembled by my company's "Manufacturing" people, the power supply oscillated at 10 MHz. Read More...

>> SEE ALL

Improve efficiency of low-cost switcher

Reduce losses by over 30%, and improve Vin(min) too, on a 34063-based or similar switcher. Read More...

Variable HV power supply employs photovoltaic optocoupler

This unusual topology saved the day when a higher-voltage variable supply was needed. Read More...

Low-side switch with fast turn-off for inductive loads

Ditch the freewheeling diode if you want fast turn off. Read More...

Avago Tech Note: Driving & protecting inverter IGBTs

A special purpose optocoupler can solve your IGBT gate-drive and fault-feedback needs. Read More...

Avago Tech Note: Reduce IGBT drive cost and space

Use an application-specific optocoupler for an elegant solution to IGBT drive and monitoring. 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...

Avoid problems with multiple DC-DC converters

Improve DC-DC converter design and application, and avoid potential problems with this synchronization circuit. Read More...

LTC Design Notes: Micropower Isolated Flyback Converter with Input Voltage Range from 6V to 100V

A tiny, integrated flyback converter requires minimal support components. Read More...

Smart ripple canceller offers near-zero dropout

Eliminate linear power supply ripple losslessly! Read More...

Design Notes: 60V, Synchronous Step-Down High Current LED Driver

Highly efficient high-power LED controller/driver also facilitates MPPT. Read More...

Latching power switch uses momentary pushbutton

This could be the cheapest way yet to convert a momentary switch into an on-off power controller. Read More...

Momentary switch controls mains with latch-on and remote shutdown

Convert a momentary switch into one that latches as well as protects loads from rapid cycling. Read More...

HV flyback converter improves efficiency

High-energy, high-voltage capacitor charging will benefit from the concepts in this DI. Read More...

>> SEE ALL

Battery protector suits smart phones and tablets

Equipped with an integrated power MOSFET with a typical on-resistance of 11.2 mΩ, the LC05111CMT battery-protection controller from ON Semiconductor helps reduce the charging time of single-cell lithium-ion secondary batteries used in portable devices, such as smart phones and tablet computers. Read More...

2-W wireless power receiver targets wearables

Integrated Device Technology's IDTP9026 is what the company claims to be the world’s smallest 2-watt wireless power receiver and battery charger. Read More...

Efficient Power Conversion (EPC) A4WP compliant Wireless Power Transfer Demonstration Kit

Efficient Power Conversion (EPC) told us, in their latest introduction of Wireless Power board demos, that EPC’s New ZVS Class-D Wireless Power Transfer System Demonstration Kits were coming soon---well, just a week later they introduce the EPC9111 and EPC9112 high efficiency wireless power transfer demonstration kit delivering 35 W and operating at 6.78 MHz. These products are complete demonstration wireless power transfer kits . Read More...

Analog Devices adds ADIsimPE to its tool arsenal for fast virtual prototyping

Analog Devices has launched the ADIsimPE™ (personal edition) simulator for Linear and Mixed Signal applications capable of virtual prototyping. Read More...

Efficient Power Conversion (EPC) eGaN wireless power transfer demo system

eGaN FETs with their low output capacitance, low input capacitance, low parasitic inductances, and small size make them a good choice for increasing efficiency in highly resonant, Rezence (A4WP) compliant, wireless power transfer systems. Read More...

Linear Technology Two-Phase synchronous boost regulator with output disconnect

Linear Technology Corporation introduced the LTC3124, a dual-phase, 3MHz, current-mode, synchronous boost DC/DC converter with output disconnect and inrush current limiting. Read More...

Wurth Elektronik’s Wireless Power Coils

Wurth Elektronik expanded its Wireless Power Coil program with three transmitter coils and one receiver coil. Read More...

WaveSurfer oscilloscopes land on MAUI

Easy-to-use interface now appears in the Teledyne LeCroy WaveSurfer 3000 series of oscilloscopes. Read More...

Industrial transceiver integrates step-down regulator and LDO

Linear Technology introduced the LT3669, an IO-Link PHY compatible (COM1/COM2/COM3) industrial transceiver that includes a high efficiency step-down regulator and a low dropout linear regulator. Read More...

Driver chip provides 7-channel drop-in Darlington replacement

This 7-channel, NMOS low-side driver replaces Darlington transistor arrays in high-voltage systems; the drop-in compatible relay driver reduces power, cost and board space. Read More...

Paper-thin batteries target Internet of Things

STMicroelectronics has announced limited production of its EnFilm advanced rechargeable batteries that are less than 0.25 mm thick. Read More...

Maxwell Technologies adds to the K2 family of large ultracapacitor cells.

The new 2.85-volt, 3400-farad ultracapacitor cell increases the range of available specific power and stored energy in the industry-standard 60 mm cylindrical “K2” form factor Read More...

Ultracap boasts 3400 farads, boosts transportation reliability

Maxwell Technologies, Inc. has added to the company's K2 series of ultracapacitor cells with a 2.85-volt, 3400-farad ultracapacitor cell that increases the range of available specific power and stored energy in the industry-standard 60 mm cylindrical 'K2' form factor. Read More...

DC/DC converters provide 1.5 W, with 2 kVAC isolation

The LTM8057 and LTM8058 are 1.5-W output µModule DC/DC converters with 2 kVAC galvanic isolation in a 9 x 11.25 x 4.92-mm BGA package. Read More...

8-channel scope is tailor-made for power electronics measurement

With more channels, high-definition, and higher bandwidth, Teledyne LeCroy's HDO8000 oscilloscope is ideal for high-power three-phase power electronics systems analysis. Read More...

Power supply board layout capability added to TI’s WEBENCH

WEBENCH® PCB Export, is a new feature in TI’s online WEBENCH Power Designer tool that engineers can use to quickly create a power supply printed circuit board (PCB) layout and export it to industry-leading computer-aided design (CAD) development platforms. Read More...

>> SEE ALL

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: 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...

Microfuel cell enables ubiquitous computing

Prying Eyes examines a fuel-cell-based power pack for handheld devices, such as cell phones and MP3 players. 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

Soft management of power system hardware, a Product How-to

Power system architects and designers of digital ASIC/FPGA/microprocessor boards may be justified in being a little envious of their colleagues in software engineering if one were to consider the following advantages that the software team has over their hardware brethren. Read More...

Perform pass/fail tests with an oscilloscope

Eliminate downloading data and writing test code. Let the oscilloscope run the tests. Read More...

DC Power Transmission: War of Currents compromise

So much of what we have in industry and in our homes is powered by DC (Just look at what powers the ICs in 99.9 % of our devices, appliances, etc.) Read More...

Transformer design: For which safety standards should you be concerned?

Understanding the requirements that govern transformer design and manufacturing will shorten design cycles to finished products using Fairchild parts in PSW. Read More...

What you should know about HBLEDs - and nobody will tell you, part 3

In this concluding installment, Ed introduces some of the basic considerations involved with selecting the right optics and power supply for your design. Ed wraps up the lesson with a "Top 10" list of LED design issues and an insider’s guide to the most important LED tech issues to watch in 2014. Read More...

Solar highway facts and fallacies

The solar highway or solar roadway is a complex concept of solar energy architectures around and in the highway, road, and street infrastructure including adjacent areas along the side of the highways and on bridges and other associated structures. Read More...

Product How To: Calculate power with a scope

Teledyne LeCroy’s Art Pini explains the math behind automatic power calculations on an oscilloscope equipped with power analysis software. Read More...

Product How-to: An inflexion point for energy harvesting and the Internet of Things is nigh

Portable power designers continue to demand more power in their products to support increased functionality and they want to charge the battery from any available power source. Read More...

Sensing Elements for Current Measurements, Part 3 of 3

The fundamentals to translating the analog world into the digital domain reduces to a handful of basic parameters. Voltage, current and frequency are electrical parameters that describe most of the analog world. Read More...

Nikola Tesla, the Russians and Witricity: Wireless power transmission revived

On July 10, 2014, it will be Nikola Tesla’s 158th birthday celebration celebrated at the Shoreham-Wading River High School auditorium----close to the site where his Wardenclyffe laboratory still stands today on Long Island, NY. Read More...

>> SEE ALL

Electric drive moves to two wheels

Just as Tesla brought style to the electric car market, the entry of electric vehicles from Zero and Harley Davidson promise to move the electric motorcycle market away from the traditional scooter look. Read More...

Planet Analog’s next “Ask the experts” session on Switching power voltage regulators

On Wednesday, July 23, at 1:00 p.m. ET (10:00 a.m. PT), we will we will discuss Switching Regulators, which are at the heart of many designs, especially for their efficiency which extends battery life in portable applications. Our experts will help you understand the fundamentals of this basic architecture. Read More...

TEG's potential: Is it real, a dream, or in-between?

As this advanced thermoelectric generation component shows, TEG is a viable energy-harvesting option, but its inherently low efficiency and low output voltage make using it effectively a significant challenge. Read More...

Power supply oscillation

In a nutshell, the power supply problem was as sketched below. When it was assembled by that first company, it worked okay. When it was assembled by my company's "Manufacturing" people, the power supply oscillated at 10 MHz. Read More...

Test power ICs to survive radiation

In space, power-management ICs can be subjected to radiation. Testing can assure that a part will still function, even if the silicon structure is altered. Read More...

Power smarty pants: Extreme wearable electronics

Nokia’s Portable Wireless Charging Plate DC-50 may find its way into your next pair of pants. Read More...

This battery is all wet

Redox flow batteries (RFB) represent a class of electrochemical energy storage devices. Read More...

Is this the smallest battery in widespread use?

This grain-of-rice battery is not just an interesting lab-demonstration project; hundreds have been made and are in use in the field. Read More...

A comparison of space-grade FPGAs - Part 1

FPGAs are increasingly being used in almost every spacecraft sub-system and designers now have a choice of process technologies and diverse fabrics. Which one is right for your mission? Read More...

AVSBus: What is it? Guest blog 1

This blog is the first in a 3-part series giving more details on the new AVSBus standard which is being incorporated into PMBus 1.3. Read More...

AVSBus: How does it work? Guest blog part two

This blog is the second in a 3-part series giving more details on the new AVS standard which is being incorporated into PMBus 1.3. Read More...

AVSBus: How do I use it?

This last blog in a 3-part series on AVSBus deals with how to make good use of the protocol. Read More...

Switch-mode regulators for space applications

Switched-mode power supplies offer spacecraft systems the advantages of high efficiency, low-power dissipation, small physical size and low mass. Read More...

>> SEE ALL

07.21.2014

Improve efficiency of low-cost switcher

Reduce losses by over 30%, and improve Vin(min) too, on a 34063-based or similar switcher.Read more...

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