Multiphase CPU core controller integrates Intel driversMar 31 2005 - Semiconductors [More Semiconductors Articles]
A high-performance, multiphase CPU core controller, with integrated
half-bridge gate drivers, that provides a precision voltage regulation
system for advanced Intel Centrino platforms in notebook computers, has been
announced by Intersil.
The ISL6217A offers customers a new level of flexibility for high current
CPU core power needs. With integrated drivers, the ISL6217A requires less
board area than external gate drive solutions, reduces overall component
count, and thus offers a lower BOM cost. The ISL6217A offers world-class
efficiency and seamless integration with Intersil´s entire multiphase
controller lineup, says the company.
The new controller can be configured to be pin-for-pin compatible with
Intersil´s ISL6218 single-phase controller with minimal component value
changes. The ISL6217A provides support for single or dual phase designs
that include a 6-bit digital-to-analogue converter (DAC) that dynamically
adjusts the core PWM output voltage from 0.700V to 1.708V in 16mV steps and
conforms to the Intel mobile VID specification. The ISL6217A also provides
support logic inputs to select active, deep sleep and deeper sleep modes of
operation. A precision reference, remote sensing and proprietary
architecture, with integrated processor-mode compensated droop, provide
excellent static and dynamic core voltage regulation. These features offer
flexible designs for users providing core power solutions for all Intel
Target applications include notebook computer systems, LCD-PC systems, SAN
or NAS systems, point of sale terminals and blade servers.