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ISL6306CRZ Datasheet

  • ISL6306CRZ

  • 4-Phase PWM Controller with 8-Bit DAC Code Capable of Precis...

  • 33頁(yè)

  • INTERSIL   INTERSIL

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ISL6306
Data Sheet
March 9, 2006
FN9226.0
4-Phase PWM Controller with 8-Bit DAC
Code Capable of Precision R
DS(ON)
or
DCR Differential Current Sensing
The ISL6306 controls microprocessor core voltage regulation
by driving up to 4 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. The ISL6306 features a high
bandwidth control loop and ripple frequencies up to >4MHz
to provide optimal response to the transients.
Today鈥檚 microprocessors require a tightly regulated output
voltage position versus load current (droop). The ISL6306
senses current by utilizing patented techniques to measure
the voltage across the on resistance, R
DS(ON)
, of the lower
MOSFETs or DCR of the output inductor during the lower
MOSFET conduction intervals. Current sensing provides the
needed signals for precision droop, channel-current
balancing, and overcurrent protection. A programmable
internal temperature compensation function is implemented
to effectively compensate for the temperature coefficient of
the current sense element.
A unity gain, differential amplifier is provided for remote
voltage sensing. Any potential difference between remote
and local grounds can be completely eliminated using the
remote-sense amplifier. Eliminating ground differences
improves regulation and protection accuracy. The threshold-
sensitive enable input is available to accurately coordinate
the start up of the ISL6306 with any other voltage rail.
Dynamic-VID鈩?technology allows seamless on-the-fly VID
changes. The offset pin allows accurate voltage offset
settings that are independent of VID setting.
Features
鈥?Precision Multiphase Core Voltage Regulation
- Differential Remote Voltage Sensing
-
鹵0.5%
System Accuracy Over Life, Load, Line and
Temperature
- Adjustable Precision Reference-Voltage Offset
鈥?Precision R
DS(ON)
or DCR Current Sensing
- Accurate Load-Line Programming
- Accurate Channel-Current Balancing
- Differential Current Sense
鈥?Microprocessor Voltage Identification Input
- Dynamic VID鈩?Technology
- 8-Bit VID Input with Selectable VR11 Code and
Extended VR10 Code at 6.25mV per Bit
- 0.5V to 1.6V Operation Range
鈥?Thermal Monitoring
鈥?Integrated Programmable Temperature Compensation
鈥?Threshold-Sensitive Enable Function for Power
Sequencing and VTT Enable
鈥?Overcurrent Protection
鈥?Overvoltage Protection
鈥?2, 3 or 4 Phase Operation
鈥?Adjustable Switching Frequency Up to 1MHz Per Phase
鈥?Package Option
- QFN Compliant to JEDEC PUB95 MO-220 QFN - Quad
Flat No Leads - Product Outline
- QFN Near Chip Scale Package Footprint; Improves
PCB Efficiency, Thinner in Profile
鈥?Pb-Free Plus Anneal Available (RoHS Compliant)
Ordering Information
PART NUMBER
PART
MARKING
TEMP.
(擄C)
PACKAGE
PKG.
DWG. #
ISL6306CRZ (Note) ISL6306CRZ 0 to 70 40 Ld 6x6 QFN L40.6x6
(Pb-free)
ISL6306IRZ (Note)
ISL6306IRZ -40 to 85 40 Ld 6x6 QFN L40.6x6
(Pb-free)
Add 鈥?T鈥?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.
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. 2006. All Rights Reserved. Dynamic VID鈩?is a trademark of Intersil Americas Inc.
All other trademarks mentioned are the property of their respective owners.

ISL6306CRZ 產(chǎn)品屬性

  • 50

  • 集成電路 (IC)

  • PMIC - 穩(wěn)壓器 - DC DC 切換控制器

  • -

  • 電壓模式

  • 1

  • 275kHz

  • 66.7%

  • 4.75 V ~ 5.25 V

  • 是

  • 無(wú)

  • 無(wú)

  • 無(wú)

  • 無(wú)

  • 無(wú)

  • 無(wú)

  • 無(wú)

  • 0°C ~ 70°C

  • 40-VFQFN 裸露焊盤(pán)

  • 管件

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