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LT8708-1

更新时间： 2023-12-20 18:45:44
品牌 Logo 应用领域
亚德诺 - ADI 开关控制器
页数 文件大小 规格书
38页 2244K
描述
适用于 LT8708 多相系统的 80V 同步 4 开关升降压 DC/DC 从属控制器

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中文翻译

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LT8708-1 数据手册

 浏览型号LT8708-1的Datasheet PDF文件第2页浏览型号LT8708-1的Datasheet PDF文件第3页浏览型号LT8708-1的Datasheet PDF文件第4页浏览型号LT8708-1的Datasheet PDF文件第5页浏览型号LT8708-1的Datasheet PDF文件第6页浏览型号LT8708-1的Datasheet PDF文件第7页 
LT8708-1  
80V Synchronous 4-Switch Buck-Boost DC/DC  
Slave Controller for LT8708 Multiphase System  
FEATURES  
DESCRIPTION  
The LT®8708-1 is a high performance buck-boost  
switching regulator controller that is paralleled with the  
LT8708 to add power and phases to an LT8708 system.  
The LT8708-1 always operates as a slave to the master  
LT8708 and has the capability of delivering as much cur-  
rent or power as the master. One or more slaves can be  
connected to a single master, proportionally increasing  
power and current capability of the system.  
n
Slave Chip of LT8708 to Deliver Additional Power  
Good Current Matching to the Average Output  
Current of LT8708 Through Current Regulation  
Easily Paralleled with LT8708 Through Four Pins  
Synchronized Start-Up with LT8708  
n
n
n
n
n
n
n
Same Conduction Modes as LT8708  
Synchronous Rectification: Up to 98% Efficiency  
Frequency Range: 100kHz to 400kHz  
Available in 40-Lead (5mm × 8mm) QFN with High  
Voltage Pin Spacing and 64-Lead (10mm × 10mm)  
eLQFP  
The LT8708-1 has the same conduction modes as LT8708,  
allowing the LT8708-1 to conduct current and power in  
the same direction(s) as the master. The master controls  
the overall current and voltage limits for an LT8708 mul-  
tiphase system, and the slaves comply with these limits.  
n
AEC-Q100 Qualifed for Automotive Applications  
APPLICATIONS  
LT8708-1s can be easily paralleled with the LT8708 by  
connecting four signals together. Two additional current  
n
High Voltage Buck-Boost Converters  
n
Bidirectional Charging Systems  
limits (forward V current and reverse V current) are  
IN  
IN  
n
Automotive 48V Systems  
available on each slave that can be set independently.  
All registered trademarks and trademarks are the property of their respective owners.  
TYPICAL APPLICATION  
The LT8708-1 Two-Phase 12V Bidirectional Dual Battery System with FHCM and RHCM  
Efficiency  
ꢀꢁꢁ  
ꢀꢀ  
ꢀꢁ  
ꢀꢁ  
ꢀꢁ  
ꢀꢁ  
ꢀꢁ  
ꢉ
ꢉ
Bꢏꢅꢙ  
Bꢏꢅꢓ  
ꢓꢗꢉ ꢅꢃ ꢓꢟꢉ  
BꢏꢅꢅꢇRꢛ  
ꢓꢗꢉ ꢅꢃ  
ꢓꢟꢉ  
BꢏꢅꢅꢇRꢛ  
ꢅꢃ ꢒꢍꢃꢒꢇ  
ꢒBꢓ  
ꢅꢃ ꢒꢍꢃꢒꢇ  
ꢒBꢙ  
ꢅꢎꢓ Bꢃꢃꢁꢅꢓ ꢁꢔꢓ Bꢎꢓ ꢀꢁꢂ ꢀꢁꢆ  
ꢀꢁꢆꢍꢆ  
ꢎꢆꢒ Bꢎꢙ ꢁꢔꢙ Bꢃꢃꢁꢅꢙ ꢅꢎꢙ  
ꢀꢁꢂꢃꢄꢅ  
ꢀ
ꢀ ꢁꢂꢃꢄꢅ  
Bꢀꢁꢂ  
ꢀꢁꢂRꢃꢄꢅꢃ ꢀꢆRRꢇꢅꢈ ꢉ ꢊꢋꢂ  
ꢋꢏꢁꢅꢇR  
ꢀ
Bꢀꢁꢂ  
ꢊꢒꢗꢝꢝ  
ꢀꢁꢆꢃꢄꢅ  
ꢇꢈꢅꢉ  
ꢀꢁꢂꢍꢆ  
ꢍꢆꢀꢚꢍꢂ  
SHDN  
ꢁꢔꢇꢆ  
ꢀꢁ  
ꢀꢁ  
ꢀꢁ  
ꢀꢁ  
ꢉ
LT8708*  
ꢀꢀ  
ꢀ
ꢀꢁꢂ  
Bꢀꢁꢂ  
ꢉꢃꢄꢅꢊꢃꢋꢃꢆ  
ꢊꢒꢗꢝꢝ  
ꢀꢁꢂꢀꢃ ꢄꢅꢂꢃꢆ  
ꢁꢔꢇꢆ  
RVSOFF  
ꢀꢊꢑꢃꢄꢅ  
ꢍꢀꢂ  
ꢍꢆꢅꢉ  
ꢀꢀ  
ꢊꢅꢕꢖꢗꢕꢘꢓ  
ꢁꢊꢏꢉꢇ  
RVSOFF  
ꢁꢛꢆꢀ  
ꢎꢏꢅꢇꢉ  
ꢀꢀ  
ꢍꢀꢂ  
ꢣRꢇꢌꢇR ꢅꢃ  
ꢍꢀꢆ  
ꢍꢀꢆ  
ꢉꢍꢆꢚꢍꢋꢃꢆ  
ꢊꢅꢕꢖꢗꢕ ꢒꢏꢅꢏ  
ꢁꢚꢇꢇꢅ ꢌꢃR  
ꢒꢍR  
ꢍꢋꢃꢆꢐꢃꢂ  
ꢍꢋꢃꢆꢐꢃꢆ  
ꢍꢋꢃꢆꢐꢍꢆꢂ  
ꢍꢋꢃꢆꢐꢍꢆꢆ  
ꢌBꢃꢄꢅ  
ꢋꢏꢁꢅꢇR ꢁꢇꢅꢄꢂ  
ꢒBꢓ  
ꢒBꢙ  
ꢒꢍR  
Rꢉꢁ ꢜꢗꢉꢞ ꢌꢔꢒ ꢜꢝꢉꢞ  
ꢅꢃ  
ꢅꢃ  
ꢊꢒꢗꢝꢝ  
ꢉ
ꢋꢃꢒꢇ  
Rꢅ ꢁꢁ ꢀꢊꢑꢃꢄꢅ  
ꢓꢙꢗꢡꢚꢢ  
ꢌBꢍꢆ  
ꢀ
Bꢃꢃꢁꢅꢓ Bꢃꢃꢁꢅꢙ  
ꢂꢃꢔꢇR ꢅRꢏꢆꢁꢌꢇR  
ꢒꢇꢀꢍꢁꢍꢃꢆ ꢊꢃꢎꢍꢀ  
ꢊꢒꢗꢝꢝ  
ꢕꢖꢗꢕꢓ ꢅꢏꢗꢓꢠ  
Rev B  
1
Document Feedback  
For more information www.analog.com  
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