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发布时间：2007-10-08 浏览：4638次
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, September 20, 2007 – Intersil Corporation (NASDAQ Global Select: ISIL), a world leader in the design and manufacture of high-performance analog semiconductors, today announced the release of the ISL6228high-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 ISL6228is 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 ISL6228features 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 ISL6228features 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 driver and bootstrap diode, the ISL6228further eliminates the need for external components, lowering BOM and saving board space for designs.
