Intersil : Buck controller optimizes notebook peripheral power

Intersil’s ISL6228 high-performance dual-output buck controller for notebook peripheral computing applications 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(TM) provides the dynamic response to input voltage and output load transients required by today’s faster, more powerful notebook processors. Thus the controller provides unmatched transient response, switching efficiency and design flexibility.

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 integrated MOSFET drivers and bootstrap diode, the ISL6228 further eliminates the need for external components, lowering BOM and saving board space for designs. The ISL6228 is available now in a 28-lead TQFN package.

For further information and reader enquiries:

Intersil SA, Riverside Way, Watchmoor Park, Camberley, Surrey, GU15 3YQ
Tel: +44 (0)1276 686886 Fax: +44 (0)1276 682323
E-mail: Web:

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

Note: The above text is the public part of the press release obtained from the manufacturer (with minor modifications). EETimes Europe cannot be held responsible for the claims and statements made by the manufacturer. The text is intended as a supplement to the new product presentations in EETimes Europe magazine.

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