DATASHEET
ISL6265A
Multi-Output Controller with Integrated MOSFET Drivers for AMD SVI Capable
Mobile CPUs
The ISL6265A 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 ISL6265A 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 ISL6265A can be configured as independent
single-phase controllers powering VDD0 and VDD1.
The heart of the ISL6265A 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.
FN6884
Rev 0.00
May 11, 2009
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
ISL6265A
(48 LD 6X6 TQFN)
TOP VIEW
OCSET_NB
PHASE_NB
UGATE_NB
36 BOOT_NB
35 BOOT0
34 UGATE0
33 PHASE0
32 PGND0
49
GND
[BOTTOM]
31 LGATE0
30 PVCC
29 LGATE1
28 PGND1
27 PHASE1
26 UGATE1
25 BOOT1
13 14 15 16 17 18 19 20 21 22 23 24
ISN0
VDIFF1
VSEN0
RTN0
RTN1
VSEN1
COMP1
ISN1
ISP0
VW1
ISP1
FB1
LGATE_NB
COMP_NB
PGND_NB
VSEN_NB
FSET_NB
RTN_NB
FB_NB
Ordering Information
PART NUMBER
(Note)
ISL6265AHRTZ
PART
MARKING
TEMP
RANGE
(°C)
PACKAGE
(Pb-Free)
PKG.
DWG. #
OFS/VFIXEN 1
PGOOD 2
PWROK 3
SVD 4
SVC 5
ENABLE 6
RBIAS 7
OCSET 8
VDIFF0 9
FB0 10
COMP0 11
VW0 12
VCC
VIN
48 47 46 45 44 43 42 41 40 39 38 37
6265A HRTZ -10 to +100 48 Ld 6x6 TQFN L48.6x6
ISL6265AHRTZ-T* 6265A 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
FN6884 Rev 0.00
May 11, 2009
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