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ISL8271M PDF预览

ISL8271M

更新时间: 2024-11-05 01:19:55
品牌 Logo 应用领域
瑞萨 - RENESAS /
页数 文件大小 规格书
57页 2416K
描述
Digital DC/DC PMBus 33A Module

ISL8271M 数据手册

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DATASHEET  
ISL8271M  
Digital DC/DC PMBus 33A Module  
FN8636  
Rev.4.00  
Aug 17, 2017  
The ISL8271M is a 33A step-down DC/DC power supply module  
with an integrated digital PWM controller, synchronous power  
switches, an inductor, and passives. Only bulk input and output  
capacitors are needed to finish the design. The 33A of  
continuous output current can be delivered without the need  
for airflow or a heatsink. The thermally enhanced HDA module  
is capable of dissipating heat directly into the PCB.  
Features  
• Complete digital switch mode power supply  
- Wide V range: 4.5V to 14V  
IN  
- Programmable V  
range: 0.6V to 5V  
OUT  
2
• PMBus compliant I C communication interface  
- Programmable V , margining, UV/OV, I  
limit,  
OUT OUT  
The ISL8271M uses ChargeMode™ control architecture, which  
responds to a transient load within a single switching cycle.  
The ISL8271M comes with a preprogrammed configuration for  
operating in a pin-strap mode: the output voltage, switching  
frequency, and the device SMBus address can be programmed  
with external resistors. Other configuration options, such as  
soft-start and fault limits can be programmed or changed  
using the PMBus compliant serial bus interface. PMBus can be  
used to monitor voltages, current, temperatures, and fault  
status. The ISL8271M is supported by PowerNavigator™  
software, a Graphical User Interface (GUI) that can be used to  
configure modules to a desired solution.  
soft-start/stop, sequencing, and external synchronization  
- Monitor: V , V , I , temperature, duty cycle,  
IN OUT OUT  
switching frequency, and faults  
• ChargeMode control architecture  
• ±1.0% V  
OUT  
accuracy over line, load, and temperature  
• Power-good indicator  
• Over-temperature protection  
• Internal nonvolatile memory and fault logging  
• Patented thermally enhanced HDA package  
• Intuitive configuration using PowerNavigator  
The ISL8271M is available in a 40 Ld compact 17mmx19mm  
HDA module with very low profile height of 3.55mm, suitable  
for automated assembly by standard surface mount  
Applications  
• Server, telecom, storage, and datacom  
• Industrial/ATE and networking equipment  
• General purpose power for ASIC, FPGA, DSP, and memory  
equipment. The ISL8271M is RoHS compliant by exemption.  
Related Literature  
• For a full list of related documents, visit our website  
- ISL8271M product page  
VIN  
V
OUT  
V
IN  
V
OUT  
C
IN  
V
SEN+  
V
DD  
C
OUT  
V
SEN-  
2.2  
ISL8271M  
V
DRVIN  
SCL  
SDA  
3.55mm  
V
DRVOUT  
1µ  
10µ  
SALRT  
SGND  
PGND  
NOTE:  
1. Only bulk input and output capacitors are required to finish the design.  
FIGURE 1. A COMPLETE DIGITAL SWITCH MODE POWER SUPPLY  
FIGURE 2. A SMALL PACKAGE FOR HIGH POWER DENSITY  
FN8636 Rev.4.00  
Aug 17, 2017  
Page 1 of 57  

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