ISL6563 Datasheet, PDF (1/19 Pages) Intersil Corporation – Two-Phase Multiphase Buck PWM Controller with Integrated MOSFET Drivers

®
Data Sheet
June 10, 2010
ISL6563
FN9126.8
Two-Phase Multiphase Buck PWM
Controller with Integrated MOSFET Drivers
The ISL6563 two-phase PWM control IC provides a
precision voltage regulation system for advanced
microprocessors. Multiphase power conversion is a marked
departure from single phase converter configurations
employed to satisfy the increasing current demands of
modern microprocessors and other electronic circuits. By
distributing the power and load current, implementation of
multiphase converters utilize smaller and lower cost
transistors with fewer input and output capacitors. These
reductions accrue from the higher effective conversion
frequency with higher frequency ripple current due to the
phase interleaving process of this topology.
Outstanding features of this controller IC include
programmable VID codes compatible with Intel VRM9,
VRM10, as well as AMD’s Hammer microprocessors, along
with a system regulation accuracy of ±1%. The droop
characteristic, used to reduce the overshoot or undershoot of
the output voltage, is easily programmed with a single resistor.
Important features of this controller IC include a set of
sophisticated overvoltage and overcurrent protection.
Overvoltage results in the converter turning the lower
MOSFETs ON to clamp the rising output voltage and protect
the microprocessor. Like other Intersil multiphase
controllers, the ISL6563 uses cost and space-saving
r_DS(ON) sensing for channel current balance, dynamic
voltage positioning, and overcurrent protection. Channel
current balancing is automatic and accurate with the
integrated current-balance control system. Overcurrent
protection can be tailored to any application with no need for
additional parts. These features provide advanced protection
for the microprocessor and power system.
Features
• Integrated Two-Phase Power Conversion
• Both 5V and 12V Conversion
• Precision Channel Current Sharing
- Loss Less Current Sampling - Uses r_DS(ON)
• Precision Output Voltage Regulation
- ±1% System Accuracy Over-Temperature (Commercial)
• Microprocessor Voltage Identification Inputs
- Up to a 6-Bit DAC
- Selectable between Intel’s VRM9, VRM10, or AMD’s
Hammer DAC codes
- Resistor-Programmable Droop Voltage
• Fast Transient Recovery Time
• Overcurrent Protection
• Improved, Multi-tiered Overvoltage Protection
• Capable of Start-up into a Pre-Charged Output
• QFN Package:
- Compliant to JEDEC PUB95 MO-220
QFN - Quad Flat No Leads - Package Outline
- Near Chip Scale Package Footprint, which Improves
PCB Efficiency and has a Thinner Profile
• Pb-Free (RoHS Compliant)
Pinout
ISL6563
(24 LD QFN)
TOP VIEW
Ordering Information
PART NUMBER
(Note 2)
TEMP.
PART RANGE
MARKING (°C)
PACKAGE
(Pb-free)
PKG.
DWG. #
ISL6563CRZ
65 63CRZ 0 to +70 24 Ld 4x4 QFN L24.4x4B
ISL6563CRZ-T (Note 1) 65 63CRZ 0 to +70 24 Ld 4x4 QFN L24.4x4B
ISL6563CRZ-TK (Note 1) 65 63CRZ 0 to +70 24 Ld 4x4 QFN L24.4x4B
ISL6563IRZ
65 63IRZ -40 to +85 24 Ld 4x4 QFN L24.4x4B
24 23 22 21 20 19
VID1 1
18 PHASE1
VID0 2
17 LGATE1
DACSEL/VID5 3
VRM10 4
25
GND
16 PVCC
15 LGATE2
ISL6563IRZ-T (Note 1) 65 63IRZ -40 to +85 24 Ld 4x4 QFN L24.4x4B
ISL6563EVAL1
Evaluation Platform
NOTES:
1. Please refer to TB347 for details on reel specifications.
2. 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.
COMP 5
14 PGND
FB 6
13 PHASE2
7 8 9 10 11 12
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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