音影先锋亚洲天堂网|电影世界尽头的爱完整版播放|国产 熟女 91|高清无码免费观看欧美日韩|韩国一区二区三区黄色录像|美女亚洲加勒比在线|亚洲综合网 开心五月|7x成人在线入口|成人网站免费日韩毛片区|国产黄片?一级?二级?三级

ISL6557ACB-T Datasheet

  • ISL6557ACB-T

  • Multi-Phase PWM Controller for Core-Voltage Regulation

  • 19頁

  • INTERSIL   INTERSIL

掃碼查看芯片數(shù)據(jù)手冊

上傳產(chǎn)品規(guī)格書

PDF預覽

廬
ISL6557A
Data Sheet
July 2004
FN9068.3
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鈩?/div>
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
鈥?Multi-Phase Power Conversion
鈥?Active Channel Current Balancing
鈥?Precision
r
DS(ON)
Current Sensing
- Low Cost
- Lossless
鈥?Precision CORE Voltage Regulation
- Differential Remote Voltage Sensing
-
鹵0.8%
System Accuracy
鈥?Microprocessor Voltage Identification Input
- Dynamic VID technology
- 5-Bit VID Input
- 0.800V to 1.550V in 25mV Steps
鈥?Programmable Power-On Bias Level
鈥?Programmable Droop Voltage
鈥?Fast Transient Recovery Time
鈥?Precision Enable Threshold
鈥?Overcurrent Protection
鈥?2-, 3-, or 4-Phase Operation
鈥?High Ripple Frequency. Channel Frequency Times
Number Channels (100kHz to 6MHz)
鈥?Pb-free available
Ordering Information
PART NUMBER
ISL6557ACB
ISL6557ACBZ
(See Note)
TEMP. (
o
C)
0 to 70
0 to 70
PACKAGE
24-Ld SOIC
24-Ld SOIC
(Pb-free)
PKG. DWG. #
M24.3
M24.3
*Add 鈥?T鈥?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.
Pinout
ISL6557A 24 PIN (SOIC)
TOP VIEW
VID4 1
VID3 2
VID2 3
VID1 4
VID0 5
COMP 6
FB 7
IOUT 8
VDIFF 9
VSEN 10
RGND 11
GND 12
24 VCC
23 EN
22 FS
21 PGOOD
20 PWM4
19 ISEN4
18 ISEN1
17 PWM1
16 PWM2
15 ISEN2
14 ISEN3
13 PWM3
1
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 漏 Intersil Americas Inc. 2003, 2004. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners. Dynamic VID鈩?is a trademark of Intersil Americas Inc.

ISL6557ACB-T 產(chǎn)品屬性

  • 1,000

  • 集成電路 (IC)

  • PMIC - 穩(wěn)壓器 - DC DC 切換控制器

  • -

  • 電壓模式

  • 1

  • 250kHz

  • 75%

  • 4.75 V ~ 5.25 V

  • 是

  • 無

  • 無

  • 無

  • 無

  • 無

  • 無

  • 無

  • 0°C ~ 70°C

  • 24-SOIC（0.295"，7.50mm 寬）

  • 帶卷 (TR)

ISL6557ACB-T相關(guān)型號PDF文件下載

掃碼下載APP，
一鍵連接廣大的電子世界。

在線人工客服

買家服務：
賣家服務：
技術(shù)客服：

0571-85317607

網(wǎng)站技術(shù)支持

13606545031

客服在線時間周一至周五
9:00-17:30

關(guān)注官方微信號，
第一時間獲取資訊。

建議反饋

聯(lián)系人：

聯(lián)系方式：

按住滑塊，拖拽到最右邊
>>
感謝您向阿庫提出的寶貴意見，您的參與是維庫提升服務的動力！意見一經(jīng)采納，將有感恩紅包奉上哦！