ISL6211
ISL6211 is Processor Core-Voltage Regulator manufactured by Renesas.
Crusoe™ Processor Core-Voltage Regulator
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FN9043 Rev 1.00 Nov 2001
The ISL6211 is a single-output power-controller to power core of Transmeta’s Crusoe™ CPU. The ISL6211 includes a 5-bit digital-to-analog converter (DAC) that adjusts the core PWM output voltage from 0.6VDC to 1.75VDC. The DAC settings may be changed during operation. Special measures are taken to allow such a transition with controlled slew rate to ply with Transmeta’s Long Run™ technology. A precise reference and a proprietary architecture with integrated pensation provide excellent static and dynamic core voltage regulation.
In nominal currents, the controller operates at a selectable frequency of 300k Hz or 600k Hz. When the filter inductor current bees discontinuous, the controller operates in a hysteretic mode dramatically improving system...
