SOURCE: Intersil

September 20, 2007 14:57 ET

Intersil R3 Technology™ Provides World's Best Transient Response and Switching Efficiency for Notebook Peripheral Power

The ISL6228 Dual-Output Buck Controller Offers Fast Transient Response Through a Hybrid Fixed/Variable Frequency PWM and Wider Voltage Range Options (3.3V to 25V Input; +0.6V to +5V Output) for Flexibility

MILPITAS, CA--(Marketwire - September 20, 2007) - Intersil Corporation (NASDAQ: ISIL), a world leader in the design and manufacture of high-performance analog semiconductors, today announced the release of the ISL6228 high-performance, dual output buck controller for notebook peripheral computing applications. Through Intersil's patented R3 Technology™ this controller provides unmatched transient response, switching efficiency and design flexibility.

The ISL6228 is capable of operating over the industry's widest input voltage range (3.3V to 25V) and has a highly flexible output voltage range from +0.6 to +5.0V. These broad voltage ranges, combined with dual independent switchers, make this controller the ideal choice for notebook peripheral applications, as well as a host of general purpose communications, storage, security and industrial automation applications.

Intersil's R3 (Robust Ripple Regulator) Technology™ provides the dynamic response to input voltage and output load transients required by today's faster, more powerful notebook processors. The R3 Technology represents a hybrid of fixed-frequency PWM control and variable-frequency hysteretic control to produce the industry's fastest transient response.

The ISL6228 features a self-adjusting PWM that sets to the most efficient switching frequency between 200Khz and 600kHz based on the requirement of the load transient. This programmable PWM delivers superior switching efficiency and enhanced design flexibility. Efficiency is further maximized by automatic switching between continuous-conduction-mode (CCM) and diode-emulation-mode (DEM) during light loads.

The ISL6228 features enhanced fault protection against undervoltage, overvoltage, overcurrent and over-temperature. The device also has a DCR inductor and fault ID, all of which are monitored through a multi-function PGOOD pin.

With an integrated MOSFET and bootstrap diode, the ISL6228 further eliminates the need for external components, lowering BOM and saving board space for designs.

Pricing and Availability

The ISL6228 is available now in a 28-lead TQFN package and is priced at $2.20 per unit in 1,000-unit quantities for bulk packaging and $2.25 per unit for tape-and-reel packaging. More information on the ISL6228 is available at,1477,ISL6228,0.html.

Note to editors: To view a high-resolution downloadable photo of ISL6228, visit Intersil's photo room at:

About Intersil's Power Management Portfolio

Intersil is a recognized global leader in power management solutions, offering a broad portfolio of products that simplify a variety of power designs. Intersil's family of power management ICs ranges from building blocks such as charge pumps, to highly-integrated, multiple-output and multiphase PWMs, to quad-voltage hot-swap controllers. As a leading supplier of PWM controller ICs with over 2 billion units shipped, Intersil addresses a broad range of power management needs for applications that include computing, communications, peripherals, display, networking, telecommunications, industrial, instrumentation and battery-powered products. To learn more, visit Intersil's Power Management Web site at

About Intersil

Intersil Corporation is a leader in the design and manufacture of high-performance analog semiconductors. The Company's products address some of the industry's fastest growing markets, such as, flat panel displays, cell phones, other handheld systems, and notebooks. Intersil's product families address power management functions and analog signal processing functions. Intersil products include ICs for battery management, hot-swap and hot-plug controllers, linear regulators, power sequencers, supervisory ICs, bridge drivers, PWM controllers, switching DC/DC regulators and power MOSFET drivers; optical storage laser diode drivers; DSL line drivers; video and high-performance operational amplifiers; data converters; interface ICs; analog switches and multiplexers; crosspoint switches; voice-over-IP devices; and ICs for military, space and radiation-hardened applications. For more information about Intersil or to find out how to become a member of our winning team, visit the Company's web site and career page at

Contact Information

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    Rob Purdie
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    Intersil Corporation
    (321) 724-7688
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