ESC Con 2015

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.

Predictive energy balance control for PDN applications

Steve Sandler takes a close look at a new predictive energy balance controller from Congipower, a new hardware-independent voltage regulator architecture. Read More...

Data-acquisition: The key to a smart electrical grid

Data acquisition of voltage, current, and power has become essential to the operation of today's smart-grid power distribution network. Read More...

Keysight expands bench DMM line to 7½ digits

The 34470A (7.5 digit) and 34465A (6.5 digit) increase the Truevolt series from two to four models. Read More...

Freescale battery charger for the Portable IoT

Analog dual-path battery charger for wearable and portable Internet of Things (IoT) devices Read More...

High efficiency resonant mode implementation using digital control

The resonant power stage has become a staple power topology in the industry for high power applications that require an efficient power conversion up to and around a kilowatt. However, it is not without its drawbacks. Short circuit behavior, synchronous rectification drive, and soft start operation are some of the challenges that need to be addressed. The adoption of unique features and flexibility of a digital power solution make the resonant topology even more attractive. This article demonstrates some unique features of the digitally implemented resonant power control and some of the digital techniques used to overcome common drawbacks. Read More...

Farewell, Leonard Nimoy

EDN bids farewell to the actor who inspired many to become engineers and scientists. Read More...

Simple analog ASIC solves difficult thermal analysis problems

In a world where Application Specific Integrated Circuits (ASICs) and Application Specific Standard Products (ASSPs) are dominating every conceivable application, greater attention is being applied to their long term reliability. Read More...

MOSFET-based Joule Thief steps up voltage

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

Power adapter international energy efficiency standards notification: Level VI

The main reason for our discussion was to help get early information out to OEMs regarding the next level in Power Adapter standards, Level VI. CUI asked EDN to assist in informing the industry groups who will need to be aware of this new level of the international standard because in previous new level announcements, so many OEMs were caught off guard and not adequately prepared. Read More...

Wireless power transfer from the antenna side of the design

We all hear about the wireless power transmitter/receiver ICs but an often overlooked, but nonetheless key, component of the solution are the transmit/receive antenna coils. 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...

Ultra-low power system for wearable devices

While the brains of the typical wearable device might be the embedded microcontroller (MCU), the heart is definitely with power management. Extremely small capacity batteries, diverse array of functions needing power, and the incredibly small solution size force new and innovative power management solutions to make the system work well. But when an ultra-low power optimized MCU and ultra-low power optimized DC/DC converter come together, the result is a well-running, well-oiled machine fit for wearable applications. Read More...

Power analyzer integrates an oscilloscope

The IntegraVision Power Analyzer from Keysight Technologies combines the accuracy and resolution of a power analyzer with the familiarity of an oscilloscope. Read More...

Sequential clock gating maximizes power savings at IP level

Obtain significant power savings with no impact to the rest of the design flow. Read More...

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LTC Design Note: Inverting DC/DC controller converts a positive input to a negative output with a single inductor

Generate negative voltages to -150V from a positive input. 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...

LTC Design Note: High performance single phase DC/DC controller with power system management

This DC-DC controller incorporates power system management and high-precision data converters. Read More...

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...

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42-V step-down regulator cuts quiescent current

With a built-in current-sense amplifier and low quiescent current, the LT8613 synchronous step-down switching regulator from Linear Technology is well-suited for automotive always-on applications that need extended operating battery life. Read More...

Triple-output supplies are just 1.06 in. high

Low-profile 75-W power supplies in TDK-Lambda’s CUT75 series occupy an industry-standard footprint of 3x5 in. to conserve space in industrial, broadcast, and test and measurement applications requiring dual or triple outputs. Read More...

Keysight expands bench DMM line to 7½ digits

The 34470A (7.5 digit) and 34465A (6.5 digit) increase the Truevolt series from two to four models. Read More...

Freescale battery charger for the Portable IoT

Analog dual-path battery charger for wearable and portable Internet of Things (IoT) devices Read More...

20-V LDO regulator boasts high PSRR

Linear Technology’s LT3042 LDO voltage regulator achieves low-frequency PSRR (power supply ripple rejection) performance that exceeds 90 dB out to 10 kHz and high-frequency PSRR that exceeds 75 dB out to 3 MHz, quieting noisy or high-ripple-input supplies. Read More...

PFC boost controller ensures emission compliance

The LT8312 boost controller with active power-factor correction from Linear Technology achieves a power factor of greater than 0.99 by actively modulating the input current, enabling compliance with most harmonic current emission requirements. Read More...

Wide-output converter modules deliver 200 W

Ericsson’s PKB4216C series of DC/DC converters provides up to 200 W of output power and up to 6.67 A of output current, along with an adjustable output voltage of 15 V to 33 V for use in RF power-amplifier applications. Read More...

Small DC/DC converters supply 0.25 to 3 W

XP Power has launched six series of isolated DC/DC converters in surface-mount packages with industry-standard pinouts offering single and dual outputs in power ranges from 0.25 W to 3 W. Read More...

Quad PMIC offers selectable DrMOS output

The XR77128, a programmable power-management IC (PMIC) from Exar, drives up to four independently controlled external MOSFET or DrMOS power stages at currents of greater than 40 A to power high-current digital cores employed in 64-bit ARM processors, FPGAs, DSPs, and ASICs. Read More...

DC/DC converters sport reinforced insulation

Encapsulated in a 2x1-in. industry-standard package, the AEE10W-M series of 10-W DC/DC converters from Artesyn Embedded Technologies targets instrumentation applications requiring a certified supplementary or reinforced insulation system to comply with industrial or medical safety standards. Read More...

Power analyzer integrates an oscilloscope

The IntegraVision Power Analyzer from Keysight Technologies combines the accuracy and resolution of a power analyzer with the familiarity of an oscilloscope. Read More...

Step-down converter accepts 4-V to 140-V input

Housed in a thermally enhanced MSOP, the LTC7138 buck converter from Linear Technology delivers up to 400 mA of continuous output current, while operating over an input voltage range of 4 V to 140 V, making it useful for a wide range of telecom, industrial, avionic, and automotive applications. Read More...

Next-generation MOSFETs cut on-resistance

Extending Infineon Technologies’ OptiMOS 5 portfolio of power MOSFETs are 80-V and 100-V variants optimized for high switching frequencies used in synchronous rectification applications for telecom and server power supplies, as well as industrial applications such as solar, low-voltage drives, and power adapters. Read More...

SiC MOSFET affords wide-bandgap advantages

A 1200-V, 20-A silicon-carbide power MOSFET from STMicroelectronics exploits the benefits of advanced wide-bandgap materials, achieving on-resistance of better than 290 mΩ all the way to the 200°C maximum operating junction temperature. 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...

Tiny power MOSFET drivers improve efficiency

The first members of Microchip's family of power MOSFET drivers, the 500-mA MCP14A005X and the 1.5-A MCP14A015X, are housed in small SOT23 and 2x2-mm DFN packages that enable higher power densities and smaller designs. Read More...

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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...

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

Predictive energy balance control for PDN applications

Steve Sandler takes a close look at a new predictive energy balance controller from Congipower, a new hardware-independent voltage regulator architecture. Read More...

Data-acquisition: The key to a smart electrical grid

Data acquisition of voltage, current, and power has become essential to the operation of today's smart-grid power distribution network. Read More...

High efficiency resonant mode implementation using digital control

The resonant power stage has become a staple power topology in the industry for high power applications that require an efficient power conversion up to and around a kilowatt. However, it is not without its drawbacks. Short circuit behavior, synchronous rectification drive, and soft start operation are some of the challenges that need to be addressed. The adoption of unique features and flexibility of a digital power solution make the resonant topology even more attractive. This article demonstrates some unique features of the digitally implemented resonant power control and some of the digital techniques used to overcome common drawbacks. Read More...

Simple analog ASIC solves difficult thermal analysis problems

In a world where Application Specific Integrated Circuits (ASICs) and Application Specific Standard Products (ASSPs) are dominating every conceivable application, greater attention is being applied to their long term reliability. Read More...

A simple method for determining the optimal operating point of an LED

Field applications engineer Donald Schelle shares a simple method for optimizing the performance of LEDs. He shows how to use the information on an LED's data sheet to perform the necessary trade-offs to produce the best mix of cost, efficacy, and weight for your particular LED application. Read More...

Power adapter international energy efficiency standards notification: Level VI

The main reason for our discussion was to help get early information out to OEMs regarding the next level in Power Adapter standards, Level VI. CUI asked EDN to assist in informing the industry groups who will need to be aware of this new level of the international standard because in previous new level announcements, so many OEMs were caught off guard and not adequately prepared. Read More...

Wireless power transfer from the antenna side of the design

We all hear about the wireless power transmitter/receiver ICs but an often overlooked, but nonetheless key, component of the solution are the transmit/receive antenna coils. Read More...

Ultra-low power system for wearable devices

While the brains of the typical wearable device might be the embedded microcontroller (MCU), the heart is definitely with power management. Extremely small capacity batteries, diverse array of functions needing power, and the incredibly small solution size force new and innovative power management solutions to make the system work well. But when an ultra-low power optimized MCU and ultra-low power optimized DC/DC converter come together, the result is a well-running, well-oiled machine fit for wearable applications. Read More...

Thermal Modeling of Large Embedded GaN Transistors

This paper highlights the recent thermal characterization and simulation work carried out on large area embedded GaN power transistors. Two types of embedded formats are characterized and compared. Read More...

Power supply de-rating in practice

With mounting market pressure on power supply size, power density and cost, there are an increasing number of AC-DC power supplies released that rely on de-rating specifications to improve their power ratings. Read More...

>> SEE ALL

Ensuring power efficiency in variable-frequency A/C systems

Active power factor correction can ensure that more of the power delivered to a home is used productively. Read More...

Farewell, Leonard Nimoy

EDN bids farewell to the actor who inspired many to become engineers and scientists. Read More...

It's time to SPICE up your life!

Earlier this year, I decided to get hot and spicy and compare the performance of three graphical SPICE circuit simulators to develop stable voltage regulators for space electronics. Read More...

Where is GaN going?

Alex Lidow looks at the current applications for GaN, the ones on the near horizon, and industry analyst predictions. Read More...

The inductive nature of voltage-control loops

The inductance of a voltage regulator depends on its load current. The math proves it. Read More...

Power electronics rise at DesignCon

What’s so special about DesignCon? With a 20-year history behind it, DesignCon is a conference that inspires fierce loyalty and commitment from its attendees and speakers. Here are some reflections on DesignCon 2015 from Steve Sandler, an engineer focused on power electronics. Read More...

Don’t neglect the humble battery connector

We pay considerable attention to batteries and their technologies, but the lowly connector is just as important to a successful, reliable DC supply. Read More...

Tips to optimize high-speed serial design

Papers and presentations at DesignCon 2015 address critical areas of high-speed design. Here’s a preview of some of them. Read More...

High tech EV shows the future of electronics in automobiles

Renovo has a very high tech EV that will make a significant contribution to electronics in automobiles going forward. Read More...

Impedance measurements make a difference at DesignCon

What do clock jitter, EMI, control loop stability, SPICE modeling, rogue waves and the ripeness of fruit have in common? A tutorial and paper presentation at DesignCon may be just what you need to find out. Read More...

Indiegogo at CES 2015 with electronics power inventions

Indiegogo, the world’s first and largest online funding platform, is at Eureka Park in Las Vegas. The Indiegogo Zone is home to some of the hottest new tech and hardware startups that have all been funded on Indiegogo Read More...

Delta Group shows CES 2015 engineers Smart EV chargers, efficient fans and Pocket Cell Pro charger solutions

Delta Group, is based in Taiwan and develops switching power supplies and thermal management designs. At CES they are unveiling their “Delta Smart Green House” Read More...

Vote for the Engineer of the Year

DesignCon2015 has announced the finalists for the Engineer of the Year Award (sponsored by National Instruments). The award includes a $10,000 grant that will be given out at DesignCon. Read More...

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