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Data Sheet
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265A
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ISL6
®
ISL6265
May 13, 2009
FN6599.1
Multi-Output Controller with Integrated
MOSFET Drivers for AMD SVI Capable
Mobile CPUs
The ISL6265 is a multi-output controller with embedded gate
drivers. A single-phase controller powers the Northbridge
(VDDNB) portion of the CPU. The two remaining controller
channels can be configured for two-phase or individual
single-phase outputs. For uniplane CPU applications, the
ISL6265 is configured as a two-phase buck converter. This
allows the controller to interleave channels to effectively
double the output voltage ripple frequency and thereby
reduce output voltage ripple amplitude with fewer
components, lower component cost, reduced power
dissipation, and smaller area. For dual-plane processors, the
ISL6265 can be configured as independent single-phase
controllers powering VDD0 and VDD1.
The heart of the ISL6265 is the patented R
3
Technology™,
Intersil’s Robust Ripple Regulator modulator. Compared with
the traditional buck regulator, the R
3
Technology™ has a
faster transient response. This is due to the R
3
modulator
commanding variable switching frequency during a load
transient.
The Serial VID Interface (SVI) allows dynamic adjustment of
the Core and Northbridge output voltages independently and
in combination from 0.500V to 1.55V. Core and Northbridge
output voltages achieve a 0.5% system accuracy
over-temperature.
A unity-gain differential amplifier is provided for remote CPU
die sensing. This allows the voltage on the CPU die to be
accurately regulated per AMD mobile CPU specifications.
Core output current sensing is realized using lossless
inductor DCR sensing. All outputs feature overcurrent,
overvoltage and undervoltage protection.
Features
• Core Configuration Flexibility
- Dual Plane, Single-Phase Controllers
- Uniplane, Two-Phase Controller
• Precision Voltage Regulators
- 0.5% System Accuracy Over-temperature
• Voltage Positioning with Adjustable Load Line and Offset
• Internal Gate Drivers with 2A Driving Capability
• Differential Remote CPU Die Voltage Sensing
• Core Differential Current Sensing: DCR or Resistor
• Northbridge Lossless r
DS(ON)
Current Sensing
• Serial VID Interface
- Two Wire Clock and Data Bus
- Supports High-Speed I
2
C
- 0.500V to 1.55V in 12.5mV Steps
- Supports PSI_L Power-Saving Mode
• Core Outputs Feature Phase Shedding with PSI_L
• Adjustable Output-Voltage Offset
• Digital Soft-Start of all Outputs
• User Programmable Switching Frequency
• Static and Dynamic Current Sharing (Uniplane Core)
• Overvoltage, Undervoltage, and Overcurrent Protection
• Pb-Free (RoHS Compliant)
Pinout
ISL6265 (48 LD 6X6 TQFN)
TOP VIEW
OCSET_NB
PHASE_NB
38
LGATE_NB
COMP_NB
PGND_NB
VSEN_NB
FSET_NB
RTN_NB
FB_NB
UGATE_NB
37
36 BOOT_NB
35 BOOT_0
34 UGATE_0
33 PHASE_0
32 PGND_0
49
GND
31 LGATE_0
30 PVCC
29 LGATE_1
28 PGND_1
27 PHASE_1
26 UGATE_1
25 BOOT_1
13
ISP0
14
ISN0
15
VSEN0
16
RTN0
17
RTN1
18
VSEN1
19
VDIFF_1
20
FB_1
21
COMP_1
22
VW1
23
ISP_1
24
ISN_1
48
47
VCC
VIN
46
45
44
43
42
41
40
39
Ordering Information
PART NUMBER
(Note)
ISL6265HRTZ
PART
MARKING
TEMP (°C)
PACKAGE
(Pb-Free)
PKG.
DWG. #
OFS/VFIXEN
PGOOD
PWROK
SVD
SVC
1
2
3
4
5
6
7
8
9
ISL6265 HRTZ -10 to +100 48 Ld 6x6 TQFN L48.6x6
ISL6265HRTZ-T* ISL6265 HRTZ -10 to +100 48 Ld 6x6 TQFN L48.6x6
Tape and Reel
* Please refer to TB347 for details on reel specifications.
NOTE: These Intersil Pb-free plastic packaged products employ special
Pb-free material sets; molding compounds/die attach materials and 100%
matte tin plate PLUS ANNEAL - e3 termination finish, which is 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.
ENABLE
RBIAS
OCSET
VDIFF_0
FB_0 10
COMP_0 11
VW0 12
1
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. 2008, 2009. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
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