ESC

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.

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...

LLC synchronous rectification made easy, robust and more efficient

This article explores a new synchronous rectification control method that leverages the intelligence present in modern digital controllers. This method has a synchronous rectification technique that seeks to minimize the dead time while constantly on the lookout for dead times that might present a hazard to the system. Read More...

Reduce diode losses in redundant systems with integrated power MUXes

Many power management applications use Schottky diodes for the parallel operation of multiple power sources. Read More...

Configurable power supply delivers up to 1800 W

The first model in Artesyn's second-generation MicroMP series of configurable AC/DC power supplies, the µMP16 furnishes 1800 W of output power maximum, achieving a power density of 22.9 W/in.3 and efficiency of up to 91%. Read More...

Product How-to: Precise and flexible supply voltage supervision for multirail digital boards

Circuit boards with FPGAs, microprocessors (µP), ASICs, and DSPs have multiple power supply rails, ranging from sub-1V point-of-loads (POL) to 12V intermediate bus, requiring voltage supervision to ensure reliable and error-free system operation. Read More...

Four-switch buck-boost converter in buck or boost mode delivers the highest efficiency

Buck-boost converters are popular solutions to cope with a wide-input voltage range that fluctuates below or above the desired output voltage. The conventional two-switch buck-boost converter offers low cost and simple control. However, it suffers from high current stress and high conduction loss, resulting in low efficiency. The excessive power dissipation associated with low efficiency makes the conventional two-switch buck-boost converter impractical for high-power applications. Read More...

DesignCon 2016 opens call for papers

It’s time to sharpen your virtual pencils and submit your ideas for next year’s DesignCon. If your work concerns signal integrity, power integrity, or the interference between the two in high-speed designs, then DesignCon is the conference for you to show your work and get the feedback of your peers. Read More...

Three ways the 3-terminal resistor model improves power converter circuits

Change the way power MOSFETs are modeled to increase the odds of first-pass power IC design success. Read More...

Microchip next-generation Digital Signal Controller for Digital Power

The power industry is entering a new level in Digital Power innovation with new architectural and software solutions and Microchip is doing their part by introducing a 14-member family of dsPIC33EP “GS” Digital Signal Controllers (DSC). 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...

Build an electronic battery simulator

The process of developing multicell battery monitoring systems (BMS) requires a convenient means of stimulating the circuitry to test the effectiveness of the control and protection algorithms. Ideally, the stimulus would be actual cells, but then to vary the state-of-charge (SOC) to trigger different functional actions in the BMS becomes a slow and cumbersome matter. Read More...

Examining high current and high power density demands on POL converters

The complexity and performance of the latest FPGAs, processors, ASICs and associated memories for server, telecom, datacom, networking, and industrial equipment continue to increase the power demands in these applications Read More...

EDN Must Read: Energy Efficiency

This special Digital Edition is a collection of must-read pieces which cover a wide variety of power management, including power inverters, motor and load drivers, integrated power modules (IPM), AC/DC controllers and regulators and DC/DC controllers in various power applications. Sponsored by: On Semiconductor Read More...

Testing SATA DevSleep for today's power stingy SSDs

Before you can test the latest power-saving technology, you need to understand how it works. Read More...

>> SEE ALL

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...

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...

>> SEE ALL

48-V ZVS buck regulators join high-efficiency line

Vicor has expanded its line of Picor Cool-Power point-of-load (PoL) regulators with the addition of the PI354x series of 48-V buck regulators, which leverages a zero-voltage switching (ZVS) topology to achieve peak efficiency exceeding 96%. 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...

Power module enables compact inverter designs

Infineon’s MIPAQ Pro intelligent power module integrates IGBTs, gate drivers, heat sink, sensors, digital control electronics, and digital bus communication into a single device to allow compact and scalable inverter designs to be implemented in wind, solar, and industrial drive applications. Read More...

Dual-output buck regulator achieves 95% efficiency

Operating from an input of 3.4 V to 42 V, the LT8616 step-down switching regulator from Linear Technology supplies two independent 2.5-A and 1.5-A continuous currents to outputs as low as 0.8 V, while its synchronous rectification topology delivers up to 95% efficiency. Read More...

Fairchild cuts IGBT switching loss

Using a design approach tailored for high and medium-speed switching applications in industrial and automotive markets, Fairchild has slashed switching loss for its 4th generation 650-V and 1200-V IGBT devices by 30% compared to the previous generation, while very strong latch-up immunity improves device ruggedness and reliability. Read More...

Absopulse doubles inverter sinewave output

Absopulse has expanded its line of IP66-rated inverters with the CSI 1K-24/230-3XD3, a microprocessor-controlled PWM inverter that delivers a pure sinewave output of 1000 VA continuous, effectively doubling the level of sinewave AC power available from these heavy-duty units. Read More...

Quarter-brick converters work with 48-V input

Designed for use with standard 48-V supplies in computing and server applications, as well as regulated 48-V supplies in telecom equipment, the ADQ600 series of isolated DC/DC converters from Artesyn Embedded Technologies delivers up to 50 A of output current and has no minimum load requirement. Read More...

Motor driver chip integrates 85-V/10-A power stage

STMicroelectronics’ powerSTEP01, a stepper-motor driver system-in-package with eight N-channel 16-mΩ MOSFETs and a digital motion engine, provides an operating voltage of 7.5 V to 85 V and a maximum output current of 10 A RMS. Read More...

Dual-input ORing switch conserves board space

Housed in a small 2x2-mm thin QFN package for use in handheld devices and systems powered from multiple sources, the MIC1344 hot-swappable power multiplexer from Micrel provides a power ORing for two power sources from 2.8 V to 5.5 V. Read More...

IoT-ready smart lighting manager ICs feature multi-sensor support

Ams's new Smart lighting manager ICs support network-commanded dimming, daylighting and other basic smart lighting functions as well as an autonomous mode which only relies on a local or remote host for configuration and exception handling. Unlike most of their counterparts, they have highly-accurate built-in light sensors which enable precise daylighting, lumen maintenance, and in the case of the AS7221, color tuning. In addition, the same sub-$10 solution that drives the lighting system can also serve as a low-cost platform for many other Smart Building services. Read More...

Paralleled converters furnish up to 2200 W of power

Optimized for parallel operation in high data-demand communications applications, up to three PKM4817LNH DC/DC converter modules from Ericsson can be connected to achieve a total of 2200 W of deliverable power. Read More...

Hot-swap controller packs MOSFET, current sensing

By integrating two of the most critical and largest hot-swap components, namely a power MOSFET and sense resistor, into a 5x9-mm QFN package, the LTC4234 20-A controller from Linear Technology not only reduces design time, but also saves valuable board area. Read More...

Microchip next-generation Digital Signal Controller for Digital Power

The power industry is entering a new level in Digital Power innovation with new architectural and software solutions and Microchip is doing their part by introducing a 14-member family of dsPIC33EP “GS” Digital Signal Controllers (DSC). Read More...

Buck converter affords longer run times in cell phones

Aimed at designs that are powered by a single-cell lithium-ion battery, the AS1382 synchronous step-down converter from ams offers efficiency as high as 96% and no-load current of just 95 µA to reduce losses in the power circuit and to extend run-time between charges when used in cell phones and wearable devices. Read More...

24-V module starts diesel engines in arctic temperatures

A 24-V ultracapacitor-based engine start module (ESM) from Maxwell Technologies, the Ultra 31 enables heavy-duty industrial vehicles and buses with diesel engines to start and operate reliably in temperatures down to -40°C. Read More...

AC/DC supplies comply with Level VI efficiency standards

CUI’s SDI90-U and SDI120-U series of 90-W and 120-W desktop AC/DC power supplies, respectively, have been enhanced to meet the more stringent average-efficiency and no-load power requirements of the Level VI standards set to go into effect in February 2016. 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: 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

LLC synchronous rectification made easy, robust and more efficient

This article explores a new synchronous rectification control method that leverages the intelligence present in modern digital controllers. This method has a synchronous rectification technique that seeks to minimize the dead time while constantly on the lookout for dead times that might present a hazard to the system. Read More...

Reduce diode losses in redundant systems with integrated power MUXes

Many power management applications use Schottky diodes for the parallel operation of multiple power sources. 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...

Product How-to: Precise and flexible supply voltage supervision for multirail digital boards

Circuit boards with FPGAs, microprocessors (µP), ASICs, and DSPs have multiple power supply rails, ranging from sub-1V point-of-loads (POL) to 12V intermediate bus, requiring voltage supervision to ensure reliable and error-free system operation. Read More...

Four-switch buck-boost converter in buck or boost mode delivers the highest efficiency

Buck-boost converters are popular solutions to cope with a wide-input voltage range that fluctuates below or above the desired output voltage. The conventional two-switch buck-boost converter offers low cost and simple control. However, it suffers from high current stress and high conduction loss, resulting in low efficiency. The excessive power dissipation associated with low efficiency makes the conventional two-switch buck-boost converter impractical for high-power applications. Read More...

Two common PDN measurement questions

Steve Sandler reveals two common questions he gets about power distribution networks, and then he provides detailed answers. Read More...

Build an electronic battery simulator

The process of developing multicell battery monitoring systems (BMS) requires a convenient means of stimulating the circuitry to test the effectiveness of the control and protection algorithms. Ideally, the stimulus would be actual cells, but then to vary the state-of-charge (SOC) to trigger different functional actions in the BMS becomes a slow and cumbersome matter. Read More...

Examining high current and high power density demands on POL converters

The complexity and performance of the latest FPGAs, processors, ASICs and associated memories for server, telecom, datacom, networking, and industrial equipment continue to increase the power demands in these applications Read More...

Testing SATA DevSleep for today's power stingy SSDs

Before you can test the latest power-saving technology, you need to understand how it works. Read More...

Intuitive innovation in wireless power transfer, Part 2

Now let us start trying to think creatively, despite our “prior hunches” by simply asking questions! Einstein had advised: “The important thing is not to stop questioning. Curiosity has its own reason for existing.” Read More...

>> SEE ALL

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...

Increase range in 2-port impedance measurements

Adding series resistors or replacing VNA cables can widen bandwidth for measuring low impedances. Read More...

48-V ZVS buck regulators join high-efficiency line

Vicor has expanded its line of Picor Cool-Power point-of-load (PoL) regulators with the addition of the PI354x series of 48-V buck regulators, which leverages a zero-voltage switching (ZVS) topology to achieve peak efficiency exceeding 96%. 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...

Power module enables compact inverter designs

Infineon’s MIPAQ Pro intelligent power module integrates IGBTs, gate drivers, heat sink, sensors, digital control electronics, and digital bus communication into a single device to allow compact and scalable inverter designs to be implemented in wind, solar, and industrial drive applications. Read More...

Dual-output buck regulator achieves 95% efficiency

Operating from an input of 3.4 V to 42 V, the LT8616 step-down switching regulator from Linear Technology supplies two independent 2.5-A and 1.5-A continuous currents to outputs as low as 0.8 V, while its synchronous rectification topology delivers up to 95% efficiency. Read More...

LLC synchronous rectification made easy, robust and more efficient

This article explores a new synchronous rectification control method that leverages the intelligence present in modern digital controllers. This method has a synchronous rectification technique that seeks to minimize the dead time while constantly on the lookout for dead times that might present a hazard to the system. Read More...

Reduce diode losses in redundant systems with integrated power MUXes

Many power management applications use Schottky diodes for the parallel operation of multiple power sources. Read More...

Absopulse doubles inverter sinewave output

Absopulse has expanded its line of IP66-rated inverters with the CSI 1K-24/230-3XD3, a microprocessor-controlled PWM inverter that delivers a pure sinewave output of 1000 VA continuous, effectively doubling the level of sinewave AC power available from these heavy-duty units. Read More...

Quarter-brick converters work with 48-V input

Designed for use with standard 48-V supplies in computing and server applications, as well as regulated 48-V supplies in telecom equipment, the ADQ600 series of isolated DC/DC converters from Artesyn Embedded Technologies delivers up to 50 A of output current and has no minimum load requirement. Read More...

Motor driver chip integrates 85-V/10-A power stage

STMicroelectronics’ powerSTEP01, a stepper-motor driver system-in-package with eight N-channel 16-mΩ MOSFETs and a digital motion engine, provides an operating voltage of 7.5 V to 85 V and a maximum output current of 10 A RMS. Read More...

>> SEE ALL

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