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LM5115AMTX/NOPB PDF预览

LM5115AMTX/NOPB

更新时间： 2024-11-17 02:58:51
品牌 Logo 应用领域
德州仪器 - TI 开关光电二极管
页数 文件大小 规格书
26页 917K
描述
Secondary Side Post Regulator/DC-DC Converter with Power-up/Power-down

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LM5115AMTX/NOPB 数据手册

 浏览型号LM5115AMTX/NOPB的Datasheet PDF文件第2页浏览型号LM5115AMTX/NOPB的Datasheet PDF文件第3页浏览型号LM5115AMTX/NOPB的Datasheet PDF文件第4页浏览型号LM5115AMTX/NOPB的Datasheet PDF文件第5页浏览型号LM5115AMTX/NOPB的Datasheet PDF文件第6页浏览型号LM5115AMTX/NOPB的Datasheet PDF文件第7页 
LM5115A  
www.ti.com  
SNVS467B –DECEMBER 2006–REVISED MARCH 2013  
LM5115A Secondary Side Post Regulator/DC-DC Converter with Power-up/Power-down  
Tracking  
Check for Samples: LM5115A  
1
FEATURES  
DESCRIPTION  
The LM5115A controller contains all of the features  
necessary to produce multiple tracking outputs using  
the Secondary Side Post Regulation (SSPR)  
technique. The SSPR technique develops a highly  
efficient and well regulated auxiliary output from the  
secondary side switching waveform of an isolated  
power converter. LM5115A can be also used as a  
standalone DC/DC synchronous buck controller  
(Refer to Standalone DC/DC Synchronous Buck  
Mode section). Regulation of the auxiliary output  
voltage is achieved by leading edge pulse width  
modulation (PWM) of the main channel duty cycle.  
Leading edge modulation is compatible with either  
current mode or voltage mode control of the main  
output. The LM5115A drives external high-side and  
low-side NMOS power switches configured as a  
2
•
Power-up/Power-down Tracking  
•
•
•
•
•
•
•
•
•
•
•
•
•
Self-synchronization to Main Channel Output  
Leading Edge Pulse Width Modulation  
Valley Current Mode Control  
Standalone DC/DC Synchronous Buck Mode  
Operates from AC or DC Input up to 75V  
Wide 4.5V to 30V Bias Supply Range  
Wide 0.75V to 13.5V Output Range.  
Top and Bottom Gate Drivers Sink 2.5A Peak  
Adaptive Gate Driver Dead-time Control  
Wide Bandwidth Error Amplifier (4MHz)  
Programmable Soft-start  
Thermal Shutdown Protection  
synchronous buck regulator.  
A
current sense  
amplifier provides overload protection and operates  
over a wide common mode input range. Additional  
features include a low dropout (LDO) bias regulator,  
error amplifier, precision reference, adaptive dead  
time control of the gate signals and thermal  
shutdown.  
TSSOP-16 Package  
Typical Application Circuit  
Phase Signal  
Main  
Output  
3.3V  
FEEDBACK  
Main Converter  
PWM Controller  
INPUT  
Sync  
HB  
V
V
CC  
+12V  
LM5115A  
BIAS  
R
S
Auxiliary  
Output  
2.5V  
HO  
Main  
3.3V  
HS  
LO  
RAMP  
TRK/SS  
CO  
COMP  
FB  
CS  
V
OUT  
PGND AGND  
Figure 1. Simplified Multiple Output Power Converter Utilizing SSPR Technique  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
All trademarks are the property of their respective owners.  
2
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2006–2013, Texas Instruments Incorporated  
 
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LM5115AMTX/NOPB 替代型号

型号 品牌 替代类型 描述 数据表
LM5115AMT/NOPB TI

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 Secondary Side Post Regulator/DC-DC Converter with Power-up/Power-down

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