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ISL6217

Intersil Corporation
Part Number ISL6217
Manufacturer Intersil Corporation
Description Precision Multi-Phase Buck PWM Controller
Published Jan 4, 2010
Detailed Description NS ESIG D EW R N DUCT O F D RO NDE TUTE P E M STI Data OM 7A Sheet REC EE SUB ISL621 T O S N ® ISL6217 December 2006 FN...
Datasheet PDF File ISL6217 PDF File

ISL6217
ISL6217

Overview
NS ESIG D EW R N DUCT O F D RO NDE TUTE P E M STI Data OM 7A Sheet REC EE SUB ISL621 T O S N ® ISL6217 December 2006 FN9089.
3 Precision Multi-Phase Buck PWM Controller for Intel‚ Mobile Voltage Positioning IMVP-IV ™ and IMVP-IV+ ™ The ISL6217 Multi-Phase Buck PWM control IC, with integrated half bridge gate drivers, provides a precision voltage regulation system for advanced Pentium“ IV microprocessors in notebook computers.
Two-phase operation eases the thermal management issues and load demand of Intel’s latest high performance processors.
This control IC also features both input voltage feed-forward and average current mode control for excellent dynamic response, “Loss-less” current sensing using MOSFET RDS(ON) and user selectable switching frequencies from 250kHz to 1MHz per phase.
The ISL6217 includes a 6-bit digital-to-analog converter (DAC) that dynamically adjusts the CORE PWM output voltage from 0.
700V to 1.
708V in 16mV steps and conforms to the Intel IMVP-IV™ and IMVP-IV+™ mobile VID specification.
The ISL6217 also has 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.
To improve efficiency at light loading, the ISL6217 can be configured to run in single phase PWM in ACTIVE, DEEP or DEEPER SLEEP modes of operation.
Another feature of this IC controller is the PGOOD monitor circuit that is held low until CORE voltage increases, during its soft-start sequence, to within 12% of the “Boot” voltage.
This PGOOD signal is masked during VID changes.
Output Overcurrent, Overvoltage and Undervoltage are monitored www.
DataSheet4U.
com and result in the converter latching off and PGOOD signal being held low.
The Overvoltage and Undervoltage thresholds are 112% and 84% of the VID, Deep or Deeper Sleep setpoint, respectively.
Overcurrent protection features a 32 ...


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