ISL6336.pdf 데이터시트 (총 30 페이지) - 파일 다운로드 ISL6336 데이타시트 다운로드

No Preview Available !

ISL6336, ISL6336A
®
www.DataSheet4U.com
Data Sheet
March 3, 2008
FN6504.0
6-Phase PWM Controller with Light Load
Efficiency Enhancement and Current
Monitoring
The ISL6336, ISL6336A controls microprocessor core voltage
regulation by driving up to 6 interleaved synchronous-rectified
buck channels in parallel. Multiphase buck converter
architecture uses interleaved timing to multiply channel ripple
frequency and reduce input and output ripple currents. Lower
ripple results in fewer components, lower component cost,
reduced power dissipation, and smaller implementation area.
Microprocessor loads can generate load transients with
extremely fast edge rates and require high efficiency over
the full load range. The ISL6336, ISL6336A utilizes Intersil’s
proprietary Active Pulse Positioning (APP) and Adaptive
Phase Alignment (APA) modulation scheme and a
proprietary active phase dropping/adding and diode
emulation scheme to achieve extremely fast transient
response with fewer output capacitors and high efficiency
from light load to full load.
The ISL6336, ISL6336A is compliant with Intel’s VR11.1
specification. Features include a pin (IMON) for current
monitoring and a Power State Indicator (PSI#) input pin to
initiate a proprietary phase dropping and diode emulation
scheme for higher efficiency at light load by dropping to 1- or
2-phase operation with optional diode emulation (ISL6336)
to reduce switching and core losses in the converter. After
the PSI# signal is de-asserted, the dropped phase(s) are
added back to sustain heavy load transient and efficiency.
Today’s microprocessors require a tightly regulated output
voltage position versus load current (droop). The ISL6336,
ISL6336A senses the output current continuously by utilizing
patented techniques to measure the voltage across a
dedicated current sense resistor or the DCR of the output
inductor. Current sensing provides the needed signals for
precision droop, channel-current balancing, and overcurrent
protection. A programmable integrated temperature
compensation function is implemented to effectively
compensate the temperature variation of the current sense
element. A current limit function provides overcurrent
protection for the individual phase.
A unity gain, differential amplifier is provided for remote voltage
sensing and eliminates any potential difference between
remote and local grounds. This improves regulation and
protection accuracy. The threshold-sensitive enable input is
available to accurately coordinate the start up of the ISL6336,
ISL6336A with any other voltage rail. Dynamic-VID™
technology allows seamless on-the-fly VID changes. The offset
pin allows accurate voltage offset settings that are independent
of VID setting.
Features
• Intel VR11.1 Compliant
• Proprietary Active Pulse Positioning and Pin Adaptive
Phase Alignment Modulation Scheme
• Proprietary Active Phase Adding and Dropping with Diode
Emulation for High Efficiency at Light Load
• Precision Multiphase Core Voltage Regulation
- Differential Remote Voltage Sensing
- ±0.5% System Accuracy Over Life, Load, Line and
Temperature
- Bi-directional Adjustable Reference-Voltage Offset
• Precision Resistor or DCR Current Sensing
- Accurate Load-Line Programming
- Accurate Channel-Current Balancing
- Accurate Current Monitoring Output Pin (IMON)
• Microprocessor Voltage Identification Input
- Dynamic VID™ Technology
- 8-Bit VID Input With VR11 Code
• Thermal Monitor and OV Protection with OVP Output
• Average Overcurrent Protection and Channel Current Limit
• Precision Overcurrent Protection on IMON pin
• Integrated Open Sense Line Protection
• Integrated Programmable Temperature Compensation
• 1- to 6-Phase Operation; Coupled Inductor Compatible
• Adjustable Switching Frequency up to 1MHz Per Phase
• Package Option
- QFN Compliant to JEDEC PUB95 MO-220 QFN - Quad
Flat No Leads - Product Outline
• Pb-Free (RoHS Compliant)
1 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. 2008. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.

No Preview Available !

ISL6336, ISL6336A
Ordering Information
www.DataSPhAeeRtT4U.com
NUMBER
PART
MARKING
TEMP. RANGE
(°C)
PACKAGE
(Pb-Free)
PKG.
DWG. #
ISL6336CRZ*
ISL6336 CRZ
0 to +70
48 Ld 7x7 QFN
L48.7x7
ISL6336IRZ*
ISL6336 IRZ
-40 to +85
48 Ld 7x7 QFN
L48.7x7
ISL6336ACRZ*
ISL6336A CRZ
0 to+70
48 Ld 7x7 QFN
L48.7x7
ISL6336AIRZ *
ISL6336A IRZ
-40 to +85
48 Ld 7x7 QFN
L48.7x7
*Add “-T” for 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.
Pinout
ISL6336, ISL6336A
(48 LD QFN)
TOP VIEW
48 47 46 45 44 43 42 41 40 39 38 37
VID7 1
VID6 2
VID5 3
VID4 4
VID3 5
VID2 6
VID1 7
VID0 8
PSI# 9
OFS 10
IMON 11
DAC 12
GND
36 PWM3
35 ISEN3-
34 ISEN3+
33 ISEN1+
32 ISEN1-
31 PWM1
30 PWM4
29 ISEN4-
28 ISEN4+
27 ISEN2+
26 ISEN2-
25 PWM2
13 14 15 16 17 18 19 20 21 22 23 24
2 FN6504.0
March 3, 2008

No Preview Available !

ISL6336, ISL6336A
Controller and Driver Recommendations
CONTROLLER
www.DataSheet4U.com
COMMENTS
ISL6336
When PSI# is asserted (LOW), the controller generates a 3-level PWM pattern on the phases that are active in PSI# mode. The
active phases in PSI# mode must use VR11.1 drivers, ISL6622, ISL6620 for diode emulation.
ISL6336A
When PSI# is asserted (LOW), the PWM pattern has only high and low states except for fault modes. The controller can be used
with any Intersil driver such as ISL6612, ISL6614, ISL6609, ISL6610. ISL6622, ISL6620 can also be used.
DRIVER
GATE DRIVE
VOLTAGE
# OF GATE
DRIVES
DIODE
GATE DRIVE
EMULATION OPTIMIZATIO
(DE)
N (GVOT)
COMMENTS
ISL6622
12V Dual Output
(Single Phase)
Yes
Yes Use for phases that are active in PSI# mode and its
coupled channel in coupled inductor applications. Can
also be used on all channels.
ISL6620
5V Dual Output
Yes
(Single Phase)
No Use for phases that are active in PSI# mode and its
coupled channel in coupled inductor applications. Can
also be used on all channels.
ISL6612, ISL6612A 12V Dual Output
(Single Phase)
No
No Can be used with phases that are inactive in PSI# mode
or with all channels when using the ISL6336A
ISL6596
5V Dual Output
(Single Phase)
No
No Can be used with phases that are inactive in PSI# mode
or with all channels when using the ISL6336A
ISL6614, ISL6614A 12V Quad Output
(Two Phase)
No
No Can be used with phases that are inactive in PSI# mode
or with all channels when using the ISL6336A
ISL6610
5V Quad Output
(Two Phase)
No
No Can be used with phases that are inactive in PSI# mode
or with all channels when using the ISL6336A
NOTE: Intersil 5V and 12V drivers are mostly pin-to-pin compatible and allow dual footprint layout to optimize MOSFET selection and efficiency. Dual = One
Synchronous Channel; Quad = Two Synchronous channels.
3 FN6504.0
March 3, 2008

No Preview Available !

ISL6336, ISL6336A
ISL6336, ISL6336A Block Diagram
www.DataSheet4U.com
VDIFF VR_RDY
OVP
RGND
VSEN
x1
S OVP R
DRIVE
Q
OVP
+175mV
SOFT-START
AND
FAULT LOGIC
PSI#
APA
VCC
POWER-ON
RESET (POR)
CLOCK,
RAMP GENERATOR,
APA CONTROL
TRI-STATE
0.875V
EN_VTT
0.875V
EN_PWR
FS
SS
APP AND APA
PWM1
MODULATOR
OFS
REF
DAC
OFFSET
APP AND APA
MODULATOR
APP AND APA
MODULATOR
PWM2
PWM3
VID7
VID6
VID5
VID4
VID3
VID2
VID1
VID0
COMP
FB
DYNAMIC
VID
DAC
1.12V
OC2
IMON
1.12V
APP AND APA
MODULATOR
APP AND APA
MODULATOR
E/A APP AND APA
MODULATOR
CHANNEL CURRENT
BALANCE AND
CURRENT LIMIT
CHANNEL
DETECT
OC1
I_TRIP
1
N
I_TOT
TEMPERATURE
COMPENSATION
CHANNEL
CURRENT
SENSE
THERMAL
MONITORING
GND
TM VR_FAN VR_HOT
4
TEMPERATURE
COMPENSATION
GAIN
TCOMP
PWM4
PWM5
PWM6
ISEN1+
ISEN1-
ISEN2+
ISEN2-
ISEN3+
ISEN3-
ISEN4+
ISEN4-
ISEN5+
ISEN5-
ISEN6+
ISEN6-
FN6504.0
March 3, 2008

No Preview Available !

ISL6336, ISL6336A
Typical Application - 5-Phase Buck Converter with DCR Sensing and Integrated TCOMP
www.DataSheet4U.com
+5V
+5V
ISL6620
VCC BOOT
UGATE
EN PHASE
PWM LGATE
GND
VIN
FB COMP APA REF
VDIFF
DAC
VSEN
RGND
VTT EN_VTT
VCC
GND
VR_RDY
VID7
VID6
VID5
VID4
VID3
VID2
VID1
VID0
PSI#
OVP
ISL6336
PWM1
ISEN1-
ISEN1+
PWM4
ISEN4-
ISEN4+
PWM2
ISEN2-
ISEN2+
IMON
PWM5
ISEN5-
ISEN5+
PWM3
ISEN3-
VR_FAN
VR_HOT
ISEN3+
PWM6
ISEN6-
ISEN6+
TM EN_PWR
+5V TCOMP OFS FS SS
+5V
ROFS RT
R SS
VIN
+5V
NTC
+5V
ISL6596
VCC BOOT
UGATE
EN PHASE
PWM LGATE
GND
+5V
ISL6596
VCC BOOT
UGATE
EN PHASE
PWM LGATE
GND
+5V
ISL6596
VCC BOOT
UGATE
EN PHASE
PWM LGATE
GND
+5V
ISL6596
VCC BOOT
UGATE
EN PHASE
PWM LGATE
GND
VIN
VIN
VIN
VIN
µP
LOAD
5 FN6504.0
March 3, 2008