ISL6260, ISL6260B
®
Data Sheet
January 3, 2006
FN9162.1
Multiphase Core Regulator for IMVP-6
Mobile CPUs
Features
• Precision Multiphase Core Voltage Regulation
- 0.5% System Accuracy Over Temperature
- Enhanced Load Line Accuracy
The ISL6260 and ISL6260B provide microprocessor core
voltage regulation by driving up to 3 channels in parallel. The
multiphase buck converter architecture uses interleaved
channels to multiply the output voltage ripple frequency and
reduce output channel currents. The reduction in ripple results
in fewer components, lower component cost, reduced power
dissipation, and smaller implementation area. The ISL6260,
ISL6260B multiphase controller together with the ISL6208 gate
drivers form the basis for a portable power supply solution to
power Intel's next generation mobile microprocessors. The
modulator at the heart of this power system is derived from
• Microprocessor Voltage Identification Input
- 7-Bit VID Input
- 0.300V to 1.500V in 12.5mV Steps
- Supports VID Changes On-The-Fly
• Multiple Current Sensing Approaches Supported
- Lossless DCR Current Sensing
- Precision Resistive Current Sensing
• Supports PSI# and Narrow VDC for Enhanced Battery Life
(EBL) Initiatives
• Superior Noise Immunity and Transient Response
• Thermal Monitor
3
Intersil's Robust Ripple Regulator technology, (R ) Compared
3
with the traditional multiphase buck regulator, the R
technology multiphase converter has faster transient response.
This is due to the R modulator commanding variable switching
frequency during load transients.
• Differential Remote Voltage Sensing
3
• High Efficiency Across Entire Load Range
• Programmable 1, 2 or 3 Power Channels
• Balanced Channel Loading Including Transients
• Small Footprint QFN 40 Lead 6x6 Package
• Pb-Free Plus Anneal Available (RoHS Compliant)
Intel Mobile Voltage Positioning is a smart voltage regulation
technology, which effectively reduces power dissipation in Intel
Pentium processors. The ISL6260 and ISL6260B support the
IMVP-6 mobile processor voltage regulation specifications.
ISL6260 and ISL6260B are pin-to-pin compatible. ISL6260B
responds to PSI# signal by adding or dropping PWM2 and
adjusting overcurrent protection accordingly. To improve
audible noise, the DPRSLPVR signal can be used to reduce
slew rates entering and exiting Deeper Sleep.
Applications
• Mobile laptop computers
Pinout
ISL6260CRZ, ISL6260BCRZ (QFN)
TOP VIEW
The ISL6260 and ISL6260B have several other key features.
Current sensing can be done using either DCR sensing or
discrete precision resistor sensing. A single NTC thermistor
thermally compensates both the gain and time constant of
the DCR variation. A unity gain, differential amplifier is
provided for remote CPU die sensing. This allows the
voltage on the CPU die to be accurately measured and
regulated per Intel IMVP-6 specifications.
40 39 38 37 36 35 34 33 32 31
1
2
30
VID2
PSI#
PGD_IN
RBIAS
VR_TT#
NTC
29 VID1
28 VID0
3
Ordering Information
4
27
26
25
24
23
22
PWM1
PWM2
PWM3
FCCM
ISEN1
ISEN2
TEMP.
PART NUMBER
(Note)
PART
MARKING
RANGE
(°C)
PACKAGE
(Pb-FREE)
PKG.
DWG. #
5
GND PAD
(BOTTOM)
6
SOFT
OCSET
VW
ISL6260CRZ
ISL6260CRZ -10 to 100 40 Ld 6x6 QFN L40.6x6
7
ISL6260CRZ-T ISL6260CRZ -10 to 100 40 Ld 6x6 QFN L40.6x6
ISL6260BCRZ ISL6260BCRZ -10 to 100 40 Ld 6x6 QFN L40.6x6
ISL6260BCRZ-T ISL6260BCRZ -10 to 100 40 Ld 6x6 QFN L40.6x6
8
9
COMP
FB
NOTE: Intersil Pb-free plus anneal products employ special Pb-free
material sets; molding compounds/die attach materials and 100% matte
tin plate termination finish, which are RoHS compliant and compatible
with both SnPb and Pb-free soldering operations. Intersil Pb-free
products are MSL classified at Pb-free peak reflow temperatures that
meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
10
21 ISEN3
11 12 13 14 15 16 17 18 19 20
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2005, 2006. All Rights Reserved
1
All other trademarks mentioned are the property of their respective owners.
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