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LT3782AEUFD#TRPBF PDF预览

LT3782AEUFD#TRPBF

更新时间： 2024-09-25 08:33:35
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
20页 270K
描述
2-Phase Step-Up DC/DC Controller

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中文翻译

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LT3782AEUFD#TRPBF 数据手册

 浏览型号LT3782AEUFD#TRPBF的Datasheet PDF文件第2页浏览型号LT3782AEUFD#TRPBF的Datasheet PDF文件第3页浏览型号LT3782AEUFD#TRPBF的Datasheet PDF文件第4页浏览型号LT3782AEUFD#TRPBF的Datasheet PDF文件第5页浏览型号LT3782AEUFD#TRPBF的Datasheet PDF文件第6页浏览型号LT3782AEUFD#TRPBF的Datasheet PDF文件第7页 
LT3782A  
2-Phase Step-Up  
DC/DC Controller  
FeaTures  
DescripTion  
The LT®3782A is a current mode 2-phase step-up DC/DC  
converter controller. Its high switching frequency (up to  
500kHz) and 2-phase operation reduce system filtering  
capacitance and inductance requirements.  
n
2-Phase Operation Reduces Required Input and  
Output Capacitance  
n
Programmable Switching Frequency:  
150kHz to 500kHz  
6V to 40V Input Range  
10V Gate Drive with V ≥13V  
High Current Gate Drive (4A)  
Programmable Soft-Start and Current Limit  
Programmable Slope Compensation for  
High Noise Immunity  
n
With 10V gate drive (V ≥13V) and 4A peak drive current,  
CC  
n
CC  
the LT3782A can drive most industrial grade high power  
MOSFETs with high efficiency. For synchronous applica-  
tions, the LT3782A provides synchronous gate signals  
with programmable falling edge delay to avoid cross  
conduction when using external MOSFET drivers. Other  
features include programmable undervoltage lockout,  
soft-start, current limit, duty cycle clamp (50% or higher)  
and slope compensation. The LT3782A is identical to the  
LT3782 except that the LT3782A has a tighter current  
sense mismatch tolerance.  
n
n
n
n
MOSFET Gate Signals with Programmable  
Falling Edge Delay for External Synchronous Drivers  
Programmable Undervoltage Lockout  
Programmable Duty Cycle Clamp (50% or Higher)  
Thermally Enhanced 28-Lead TSSOP and 4mm ×  
5mm QFN Packages  
n
n
n
The LT3782A is available in thermally enhanced 28-lead  
TSSOP and 4mm × 5mm QFN packages.  
applicaTions  
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks, ThinSOT  
n
Industrial Equipment  
and No R  
are trademarks of Linear Technology Corporation. All other trademarks are the  
SENSE  
property of their respective owners. Protected by U.S. Patents including 6144194.  
n
Telecom Infrastructure  
n
Interleaved Isolated Power Supply  
Typical applicaTion  
50V 4A Boost Converter  
Efficiency and Power Loss  
vs Load Current  
20µH  
V
V
IN  
10V TO 36V  
OUT  
50V, 4A  
97  
18  
15  
12  
9
20µH  
10µF  
D1  
V
GBIAS1  
GBIAS2  
CC  
×2  
V
= 24V  
IN  
EFFICIENCY  
+
10µF  
×2  
1µF  
2µF  
95  
93  
91  
89  
87  
85  
D2  
220µF  
825k  
274k  
V
= 12V  
= 12V  
GBIAS  
BGATE1  
IN  
Q1  
RUN  
V
IN  
LT3782A  
0.004Ω  
V
EE1  
V
= 24V  
IN  
59k  
6
Q2  
SLOPE  
DELAY  
DCL  
BGATE2  
POWER LOSS  
3
80k  
0.004Ω  
475k  
0
R
SET  
V
EE2  
+
0
1
2
3
4
5
10Ω  
10nF  
10Ω  
10nF  
I
(A)  
SS  
OUT  
24.9k  
0.1µF  
3782A TA01b  
SENSE1  
SENSE1  
–
V
C
+
–
SENSE2  
SENSE2  
13k  
6.8nF  
D1, D2: 30BQ060PbF  
Q1, Q2: Si7852DP-T1-E3  
100pF  
FB  
GND  
3782A TA01  
3782afc  
1
For more information www.linear.com/LT3782A  
1234567...20

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