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ISL8270MEVAL1Z

更新时间： 2024-11-25 01:19:55
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瑞萨 - RENESAS /
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56页 2304K
描述
Digital DC/DC PMBus 25A Module

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ISL8270MEVAL1Z 数据手册

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DATASHEET  
ISL8270M  
Digital DC/DC PMBus 25A Module  
FN8635  
Rev.4.00  
Aug 17, 2017  
The ISL8270M is a 25A 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 25A 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 ISL8270M uses ChargeMode™ control architecture, which  
responds to a transient load within a single switching cycle.  
The ISL8270M comes with a preprogrammed configuration for  
operating in a pin-strap mode: output voltage, switching  
frequency, and the device SMBus address can be programmed  
with external resistors. More configurations, such as soft-start  
and fault limits, can be easily programmed or changed using a  
PMBus compliant serial bus interface. PMBus can be used to  
monitor voltages, current, temperatures, and fault status. The  
ISL8270M 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 ISL8270M 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 ISL8270M is RoHS compliant by exemption.  
Related Literature  
• For a full list of related documents, visit our website  
- ISL8270M product page  
V
IN  
V
OUT  
V
IN  
V
OUT  
C
IN  
V
SEN+  
V
DD  
C
OUT  
V
SEN-  
2.2  
ISL8270M  
V
DRVIN  
SCL  
SDA  
3.55mm  
V
DRVOUT  
1  
10  
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  
FN8635 Rev.4.00  
Aug 17, 2017  
Page 1 of 56  
1234567...56

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