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參數(shù)資料
| 型號： | ISL6557ACBZ |
| 廠商： | INTERSIL CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Multi-Phase PWM Controller for Core-Voltage Regulation |
| 中文描述： | SWITCHING CONTROLLER, 1500 kHz SWITCHING FREQ-MAX, PDSO24 |
| 封裝： | LEAD FREE, PLASTIC, MS-013AD, SOIC-24 |
| 文件頁數(shù)： | 1/19頁 |
| 文件大?。?/td> | 540K |
| 代理商： | ISL6557ACBZ |
1
FN9068.3
ISL6557A
Multi-Phase PWM Controller for
Core-Voltage Regulation
The ISL6557A provides core-voltage regulation by driving up
to four interleaved synchronous-rectified buck-converter
channels in parallel. Intersil multi-phase controllers together
with Intersil MOSFET drivers form the basis for the most
reliable power-suppply solutions available to power the latest
industry-leading microprocessors. Multi-phase buck
converter architecture uses interleaved timing to multiply
ripple frequency and reduce input and output ripple currents.
Lower ripple results in lower total component cost, reduced
dissipation, and smaller implementation area. Pre-
configured for 4-phase operation, the ISL6557A offers the
flexibility of selectable 2- or 3-phase operation. Simply
connect the unused PWM pins to VCC. The channel
switching frequency is adjustable in the range of 50kHz to
igMHz giving the designer the ultimate flexibility in managing
the balance between high-speed response and good
thermal management.
New features on the ISL6557A include Dynamic-VID
technology allowing seamless on-the-fly VID changes with
no need for any additional external components. When the
ISL6557A receives a new VID code, it incrementally steps
the output voltage to the new level. Dynamic VID changes
are fast and reliable with no output voltage overshoot or
undershoot. The RGND and VSEN pins provide inputs for
differential remote voltage sensing to improve regulation and
protection accuracy. A threshold-sensitive enable pin (EN)
can be used with an external resistor divider to optionally set
the power-on voltage level. This allows optional start-up
coordination with Intersil MOSFET drivers or any other
devices powered from a separate supply.
Like other Intersil multiphase controllers, the ISL6557A 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. The IOUT pin carries a signal
proportional to load current and can be optionally connected
to FB for accurate load-line regulation.
An integrated DAC decodes the 5-bit logic signal present at
VID4-VID0 and provides an accurate reference for precision
voltage regulation. The high-bandwidth error amplifier,
differential remote-sensing amplifier, and accurate voltage
reference all work together to provide better than 0.8% total
system accuracy, and to enable the fastest transient
response available.
Features
Multi-Phase Power Conversion
Active Channel Current Balancing
Precision
r
DS(ON)
Current Sensing
- Low Cost
- Lossless
Precision CORE Voltage Regulation
- Differential Remote Voltage Sensing
-
±
0.8% System Accuracy
Microprocessor Voltage Identification Input
- Dynamic VID technology
- 5-Bit VID Input
- 0.800V to 1.550V in 25mV Steps
Programmable Power-On Bias Level
Programmable Droop Voltage
Fast Transient Recovery Time
Precision Enable Threshold
Overcurrent Protection
2-, 3-, or 4-Phase Operation
High Ripple Frequency. Channel Frequency Times
Number Channels (100kHz to 6MHz)
Pb-free available
Ordering Information
TEMP. (
o
C)
ISL6557ACB
0 to 70
ISL6557ACBZ
(See Note)
Pinout
ISL6557A 24 PIN (SOIC)
TOP VIEW
PART NUMBER
PACKAGE
24-Ld SOIC
24-Ld SOIC
(Pb-free)
PKG. DWG. #
M24.3
M24.3
0 to 70
*Add “-T” suffix to part number for tape and reel packaging.
NOTE: Intersil Pb-free products employ special Pb-free material sets; molding
compounds/die attach materials and 100% matte tin plate termination finish, which
is 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-020B.
VID4
VID3
VID2
VID1
VID0
IOUT
PWM2
PGOOD
PWM3
ISEN4
ISEN1
VDIFF
ISEN3
FB
PWM4
VSEN
COMP
PWM1
ISEN2
RGND
GND
FS
EN
VCC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Data Sheet
July 2004
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
Intersil (and design) is a trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2003, 2004. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners. Dynamic VID is a trademark of Intersil Americas Inc.
相關(guān)PDF資料 |
PDF描述 |
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| ISL6557ACBZ-T | Multi-Phase PWM Controller for Core-Voltage Regulation |
| ISL6557CB-T | Multi-Phase PWM Controller for Core-Voltage Regulation |
| ISL6557 | PWM Controller with Wide Input Voltage Range 8-SOIC -20 to 85 |
| ISL6557CB | PWM Controller with Wide Input Voltage Range 8-PDIP -20 to 85 |
| ISL6558CRZA-T | Multi-Purpose Precision Multi-Phase PWM Controller With Optional Active Voltage Positioning |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ISL6557ACBZ-T | 功能描述:IC REG CTRLR BUCK PWM VM 24-SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:275kHz 占空比:50% 電源電壓:18 V ~ 110 V 降壓:無 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:是 工作溫度:-40°C ~ 85°C 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 包裝:帶卷 (TR) |
| ISL6557CB | 制造商:Intersil Corporation 功能描述: |
| ISL6557CB-T | 制造商:Intersil Corporation 功能描述: |
| ISL6557CB-T WAF | 制造商:Intersil Corporation 功能描述: |
| ISL6558CB | 功能描述:DC/DC 開關(guān)控制器 Precision MultiPhase RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
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