ISL6568CRZ

Manufacturer Part NumberISL6568CRZ
DescriptionISL6568CRZTwo-Phase Buck PWM Controller with Integrated MOSFET Drivers for VRM9, VRM10, and AMD Hammer Applications
ManufacturerIntersil Corporation
ISL6568CRZ datasheet
 


Specifications of ISL6568CRZ

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Data Sheet
Two-Phase Buck PWM Controller with
Integrated MOSFET Drivers for VRM9,
VRM10, and AMD Hammer Applications
The ISL6568 two-phase PWM control IC provides a
precision voltage regulation system for advanced
microprocessors. The integration of power MOSFET drivers
into the controller IC marks a departure from the separate
PWM controller and driver configuration of previous multi-
phase product families. By reducing the number of external
parts, this integration is optimized for a cost and space
saving power management solution.
Outstanding features of this controller IC include
programmable VID codes compatible with Intel VRM9,VRM10,
as well as AMD Hammer microprocessors. A unity gain,
differential amplifier is provided for remote voltage sensing,
compensating for any potential difference between remote and
local grounds. The output voltage can also be positively or
negatively offset through the use of a single external resistor.
A unique feature of the ISL6568 is the combined use of both
DCR and r
current sensing. Load line voltage
DS(ON)
positioning (droop) and overcurrent protection are
accomplished through continuous inductor DCR current
sensing, while r
current sensing is used for accurate
DS(ON)
channel-current balance. Using both methods of current
sampling utilizes the best advantages of each technique.
Protection features of this controller IC include a set of
sophisticated overvoltage, undervoltage, and overcurrent
protection. Overvoltage results in the converter turning the
lower MOSFETs ON to clamp the rising output voltage and
protect the microprocessor. The overcurrent protection level is
set through a single external resistor. Furthermore, the ISL6568
includes protection against an open circuit on the remote
sensing inputs. Combined, these features provide advanced
protection for the microprocessor and power system.
Ordering Information
TEMP.
PART NUMBER*
(°C)
PACKAGE
ISL6568CR
0 to 70 32 Ld 5x5 QFN
ISL6568CRZ (Note)
0 to 70 32 Ld 5x5 QFN (Pb-free) L32.5x5
ISL6568CRZA
0 to 70 32 Ld 5x5 QFN (Pb-free
(Note)
with Anneal)
ISL6568IR
-40 to 85 32 Ld 5x5 QFN
ISL6568IRZ (Note)
-40 to 85 32 Ld 5x5 QFN (Pb-free) L32.5x5
ISL6568IRZA (Note) -40 to 85 32 Ld 5x5 QFN (Pb-free
with Anneal)
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.
1
July 25, 2005
Features
• Integrated Multi-Phase Power Conversion
- 1 or 2-Phase Operation
• Precision Core Voltage Regulation
- Differential Remote Voltage Sensing
- ±0.5% System Accuracy Over Temperature
- Adjustable Reference-Voltage Offset
• Precision Channel Current Sharing
- Uses Loss-Less r
• Accurate Load Line Programming
- Uses Loss-Less Inductor DCR Current Sampling
• Variable Gate Drive Bias: 5V to 12V
• Microprocessor Voltage Identification Inputs
- Up to a 6-Bit DAC
- Selectable between Intel’s VRM9, VRM10, or AMD
Hammer DAC codes
- Dynamic VID-on-the-fly Technology
• Overcurrent Protection
• Multi-tiered Overvoltage Protection
• Digital Soft-Start
• Selectable Operation Frequency up to 1.5MHz Per Phase
• Pb-Free Plus Anneal Available (RoHS Compliant)
Pinout
32
31
PKG.
VID12.5
1
DWG. #
REF
2
L32.5x5
3
OFS
L32.5x5
VCC
4
5
COMP
L32.5x5
FB
6
L32.5x5
7
VDIFF
RGND
8
9
10
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. 2004, 2005. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
ISL6568
FN9187.3
Current Sampling
DS(ON)
ISL6568 (QFN)
TOP VIEW
30
29
28
27
26
25
24
BOOT1
23
PHASE1
22
VID4
21
VID3
33
GND
20
ENLL
19
PHASE2
18
BOOT2
17
UGATE2
11
12
13
14
15
16

ISL6568CRZ Summary of contents