ISL6265 Datasheet, PDF (1/24 Pages) Intersil Corporation – Multi-Output Controller with Integrated MOSFET Drivers for AMD SVI Capable

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May 13, 2009
ISL6265
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 R³ Technology™,
Intersil’s Robust Ripple Regulator modulator. Compared with
the traditional buck regulator, the R³ Technology™ has a
faster transient response. This is due to the R³ 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.
Ordering Information
PART NUMBER
PART
PACKAGE PKG.
(Note)
MARKING TEMP (°C) (Pb-Free) DWG. #
ISL6265HRTZ 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.
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 I²C
- 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
48 47 46 45 44 43 42 41 40 39 38 37
OFS/VFIXEN 1
PGOOD 2
PWROK 3
SVD 4
SVC 5
ENABLE 6
RBIAS 7
OCSET 8
VDIFF_0 9
FB_0 10
COMP_0 11
VW0 12
49
GND
36 BOOT_NB
35 BOOT_0
34 UGATE_0
33 PHASE_0
32 PGND_0
31 LGATE_0
30 PVCC
29 LGATE_1
28 PGND_1
27 PHASE_1
26 UGATE_1
25 BOOT_1
13 14 15 16 17 18 19 20 21 22 23 24
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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