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December 19, 2007  |   A Penton Media Publication  |   Volume 5 Number 51  
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Integrated, Protected Class D Audio Chipset for High Performance Amplifiers Featuring the new IRS2092 integrated audio driver IC and full complement of digital audio MOSFETs, IR¹s flexible chipset can scale to applications from 50-500W by simply replacing MOSFETs. The audio IC integrates four essential functions for Class D design implementation: error amplifier, PWM comparator, gate driver, and protection circuitry.

www.irf.com/whats-new/nr071002.html


Table Of Contents
Resonant Controllers Aim To Build Efficient Supplies at Low Cost
ON Semi. Acquires AMI Semi.
Vendor Will Preview "Green" Power Chip at CES
Vishay Expands Offerings Through Digi-Key
Chip Brings Two-Phase PFC Benefits To Higher Power Systems
MOSFET-Schottky Chip Improves DC-DC Efficiency
Current Sense Amp Features Wide Input Range
Compact Package Shrinks MOSFET Footprint
Low-Cost Relay Targets HVAC and Appliance Applications
Events

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Top Story

Resonant Controllers Aim To Build Efficient Supplies at Low Cost
by David Morrison, Editor, Power Electronics Technology
 According to CamSemi, the Cambridge, England-based fabless semiconductor company, its C2470 controllers enable ac-dc supplies to achieve high efficiency, while costing the same or less than linears. Moreover, the company claims that power supplies based on its chips can achieve 7% to 10% better efficiency than competing flyback designs in the 6-W to 40-W range.

Industry News

ON Semi. Acquires AMI Semi.
ON Semiconductor and AMIS Holdings have signed a definitive merger agreement providing for the acquisition of AMIS by ON Semiconductor in an all-stock transaction with an equity value of approximately $915 million.

Vendor Will Preview "Green" Power Chip at CES
GreenPlug, a developer of digital technology enabling real-time collaboration between electronic devices and their power sources, will preview its environmentally-friendly dc power hub at the 2008 International CES, being held January 7-10 in Las Vegas.

Vishay Expands Offerings Through Digi-Key
Vishay Intertechnology has expanded its distribution agreement with Digi-Key so that its extensive portfolio of semiconductor products is now available from Digi-Key.


New Products and Services

Chip Brings Two-Phase PFC Benefits To Higher Power Systems
The UCC28070 from Texas Instruments is a single-chip, interleaved power factor correction controller for multi-kilowatt communications, server and industrial systems.

MOSFET-Schottky Chip Improves DC-DC Efficiency
Vishay Intertechnology's single-chip power MOSFET and Schottky diode device is said to improve operational efficiency by up to 6% in dc-to-dc conversion applications compared with circuits using previous monolithic devices.

Current Sense Amp Features Wide Input Range
Linear Technology's LT6105 is a precision current sense amplifier with an input common mode range that extends from --0.3 V below V-, up to 44 V above V-.

Compact Package Shrinks MOSFET Footprint
Alpha & Omega Semiconductor now offers a monolithically integrated Schottky diode and the company's advanced MOSFETs in a compact DFN3x3EP package.

Low-Cost Relay Targets HVAC and Appliance Applications
From Omron Electronic Components, the G5LA relay series is a cost-effective alternative to industry-standard sugar-cube-style relays.

Upcoming Events

Events
January 7-10, 2008
International Consumer Electronics Show 2008, Las Vegas
www.cesweb.org


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