Technical Features

January 2011

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Figure 1: Power stage of the flyback converter (simplified)

Eleazar Falco, FAE, Würth Elektronik eiSos / Editor, Gerhard Stelzer

Isolated flyback converters often use optocouplers in the feedback loop to regulate the output voltage. As part of the compensation circuit, its parameters such as CTR influence the control loop and must be taken into account in the flyback converter design. The flyback converter is an isolated switching power

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Date:

04/01/2024

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Figure 1: 65W demo board of the TEA1733

Efficiency Cost & Compactness

Yingying Wang, NXP Semiconductor,s Nijmegen, The Netherlands

The current market of Switch Mode Power Supply IC's shows increasing demand on efficient and cost effective solutions that enable slim and compact design. The industry standard Energy Star Version

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Date:

01/19/2011

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Figure 1: Noise Rejection Utilities

Power Management Purity

Frank Kern, PE, staff field applications engineer CHiL Semiconductor

Modern power systems feature high speed serial communication between load and voltage regulators (VR) to enable sophisticated power management operations. This communication is susceptible to

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Date:

01/17/2011

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Figure 1: 347W universal input PFC

Integrated High-Power Converters

David New, Product Marketing Manager for computing applications Power Integrations, Inc., San Jose, California. US

Power supplies of up to1kW output power account for the majority of power supplies used in high-volume electronics applications. One obvious application that we use every day is the personal computer,

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Date:

01/15/2011

Secondary Thermal Protection

Guillemette Paour, Global Market Manager, Automotive, Tyco Electronics Circuit Protection Devices

The growing demand for electronics that can operate in harsh environments such as under-hood automotive systems and rugged industrial applications is fueling a trend toward new materials and more

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Date:

01/15/2011

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Figure 1: Effect on efficiency of reducing component size by increasing switching frequency

Designing for Efficiency

Peter Blyth, Industry Director, XP Power

Reducing the size and improving the efficiency of AC-DC power supplies are constant pressures. In addition, the requirement for portability in some equipment means that not only the size but also

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Date:

01/15/2011

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Figure 1a: The effects of parallel connecting two power supplies without share control

Powering Flexibility and Reliability

Andrew Skinner, Chief Technology Officer, TDK-Lambda, UK

Flexibility is one of the major advantages of power supplies using digital power conversion, where customer specific optimisations can be achieved without the expense of changing the hardware.

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Date:

01/15/2011

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High Efficiency Tuning

Len Crane, Technical Marketing Director, Coilcraft, Cary, IL, USA

Optimizing a power converter means making the right inductor choice. Choosing an inductor is a fairly simple proposition, with relatively few parameters to consider. Yet a solid understanding of

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Date:

01/15/2011

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Figure 1a: Application reference design for air-conditioning systems

Comfort with Conservation

Thomas Kimmer, Application Engineering IGBT, and Mark Thomas, Product Marketing Manager IGBT Infineon Technologies

The demand for energy in our world is increasing dramatically. A large portion of this demand comes from air-conditioning systems that are running over all the different climate zones. Energy saving

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Date:

01/15/2011

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Supply Continuity

David Renton, Global Managing Director, UPSL, Berkshire, UK

With a recent survey reporting power outages as a common experience, and most users expecting the situation to worsen, UPS systems are now essential for business critical ICT equipment. The

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Date:

01/15/2011

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Figure 2: Measured data for the Ericsson BMR450 20-Amp power module when varying input voltage from 4.5 to 14 volts and with load from zero to 20 Amps.

Boosting Power System Efficiency

Patrick Le Fèvre, Marketing and Communications Director, Ericsson Power Modules

This case study presents the results of Ericsson's findings of using a novel algorithm to optimize intermediate bus voltage. This approach saves significant energy and cost, while increasing reliability. The

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Date:

01/14/2011