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ISL6557A

更新时间： 2024-02-01 16:56:32
品牌 Logo 应用领域
英特矽尔 - INTERSIL 多相元件控制器
页数 文件大小 规格书
19页 535K
描述
Multi-Phase PWM Controller for Core-Voltage Regulation

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ISL6557A 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
零件包装代码：SOIC包装说明：PLASTIC, MS-013AD, SOIC-24
针数：24Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.22模拟集成电路 - 其他类型：SWITCHING CONTROLLER
控制模式：CURRENT/VOLTAGE-MODE控制技术：PULSE WIDTH MODULATION
最大输入电压：5.25 V最小输入电压：4.75 V
标称输入电压：5 VJESD-30 代码：R-PDSO-G24
JESD-609代码：e0长度：15.4 mm
功能数量：1端子数量：24
最高工作温度：70 °C最低工作温度：
封装主体材料：PLASTIC/EPOXY封装代码：SOP
封装等效代码：SOP24,.4封装形状：RECTANGULAR
封装形式：SMALL OUTLINE峰值回流温度（摄氏度）：NOT SPECIFIED
认证状态：Not Qualified座面最大高度：2.65 mm
子类别：Switching Regulator or Controllers表面贴装：YES
切换器配置：PHASE-SHIFT最大切换频率：1500 kHz
温度等级：COMMERCIAL端子面层：Tin/Lead (Sn/Pb)
端子形式：GULL WING端子节距：1.27 mm
端子位置：DUAL处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：7.5 mmBase Number Matches：1

ISL6557A 数据手册

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ISL6557A  
®
Data Sheet  
July 2004  
FN9068.3  
Multi-Phase PWM Controller for  
Core-Voltage Regulation  
Features  
• Multi-Phase Power Conversion  
• Active Channel Current Balancing  
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.  
• Precision r  
- Low Cost  
Current Sensing  
DS(ON)  
- 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  
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.  
• 2-, 3-, or 4-Phase Operation  
• High Ripple Frequency. Channel Frequency Times  
Number Channels (100kHz to 6MHz)  
• Pb-free available  
Ordering Information  
o
PART NUMBER  
TEMP. ( C)  
0 to 70  
PACKAGE PKG. DWG. #  
ISL6557ACB  
24-Ld SOIC  
M24.3  
M24.3  
ISL6557ACBZ  
(See Note)  
0 to 70  
24-Ld SOIC  
(Pb-free)  
*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.  
Like other Intersil multiphase controllers, the ISL6557A uses  
cost and space-saving r  
sensing for channel current  
DS(ON)  
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.  
Pinout  
ISL6557A 24 PIN (SOIC)  
TOP VIEW  
1
2
24  
23  
22  
21  
20  
VID4  
VID3  
VCC  
EN  
3
VID2  
FS  
4
PGOOD  
PWM4  
VID1  
VID0  
5
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.  
19 ISEN4  
COMP  
FB  
6
7
18  
17  
ISEN1  
PWM1  
8
IOUT  
VDIFF  
VSEN  
RGND  
GND  
9
16 PWM2  
10  
11  
12  
15  
14  
13  
ISEN2  
ISEN3  
PWM3  
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.  
1
All other trademarks mentioned are the property of their respective owners. Dynamic VID™ is a trademark of Intersil Americas Inc.  
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