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ISL6315 Fiches technique(PDF) 1 Page - Intersil Corporation

No de pièce ISL6315
Description  Two-Phase Multiphase Buck PWM Controller with Integrated MOSFET Drivers
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Fabricant  INTERSIL [Intersil Corporation]
Site Internet  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

ISL6315 Fiches technique(HTML) 1 Page - Intersil Corporation

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1
®
FN9222.0
ISL6315
Two-Phase Multiphase Buck PWM
Controller with Integrated MOSFET
Drivers
The ISL6315 two-phase PWM control IC provides a
precision voltage regulation system for advanced loads up to
60A-80A. 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 ISL6315, though, does not
intrinsically allow for load-line regulation (no droop).
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 ISL6315 uses cost and space-saving
rDS(ON) sensing for channel current balance 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 intelligent protection for modern power systems.
Features
• Integrated Two-Phase Power Conversion
• 5V to 12V Input Voltage Conversion
• Precision Channel Current Sharing
- Loss-Less Current Sampling - Uses rDS(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
• Fast Transient Recovery Time
• Overcurrent Protection
• Pre-Biased Output Start-up Operation
• Sources and Sinks Output Current
- Bus Termination Applications
• Improved, Multi-tiered Overvoltage Protection
• 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 Plus Anneal Available (RoHS Compliant)
Pinout
ISL6315 (QFN)
TOP VIEW
Ordering Information
PART
NUMBER
PART
MARKING
TEMP.
(°C)
PACKAGE
PKG.
DWG. #
ISL6315CR
ISL6315CR
0 to 70 24 Ld 4x4 QFN L24.4x4B
ISL6315CRZ
(Note)
6315CRZ
0 to 70 24 Ld 4x4 QFN
(Pb-free)
L24.4x4B
ISL6315IRZ
(Note)
6315IRZ
-40 to 85 24 Ld 4x4 QFN
(Pb-free)
L24.4x4B
ISL6315EVAL1
Evaluation Platform
*Add “-T” suffix for tape and reel.
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.
**Contact Factory for Availability.
VID1
VRM10
VID0
DACSEL/VID5
COMP
FB
LGATE2
PGND
PHASE1
LGATE1
PVCC
PHASE2
1
2
3
4
5
6
18
17
16
15
14
13
24
23
22
21
20
19
78
9
10
11
12
25
GND
Data Sheet
February 10, 2006
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. 2006. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.


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