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LTC3705IGN#TR PDF预览

LTC3705IGN#TR

更新时间： 2024-11-06 12:59:23
品牌 Logo 应用领域
凌特 - Linear 驱动器栅极开关栅极驱动控制器
页数 文件大小 规格书
20页 285K
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中文翻译

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LTC3705IGN#TR 数据手册

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LTC3705  
2-Switch Forward  
Controller and Gate Driver  
U
FEATURES  
DESCRIPTIO  
The LTC®3705 is a controller for a 2-switch forward  
converter and includes on-chip bottom and top gate  
drivers that do not require external transformers.  
■
High-Speed Top and Bottom Gate Drivers for  
2-Switch Forward Converter  
On-Chip Rectifier and Self-Starting Architecture  
■
Eliminate Need for Separate Gate Drive Bias  
Supply  
For secondary-side control, combine the LTC3705 with  
the LTC3706 PolyPhase® secondary-side synchronous  
forward controller to create a complete forward converter  
using a minimum of discrete parts. A proprietary scheme  
is used to multiplex gate drive signals across the isolation  
barrier through a tiny pulse transformer. The on-chip  
rectifierandthesamepulsetransformerprovidegatedrive  
bias power.  
■
Wide Input Voltage Supply Range: 18V to 80V  
■
Tolerant of 100V Input Voltage Transients  
■
Linear Regulator Controller for Fast Start-Up  
■
Precision UVLO with Adjustable Hysteresis  
■
Overcurrent Protection  
■
Volt-Second Limit Prevents Transformer Core  
Saturation  
■
■
Alternatively, the LTC3705 can be used as a standalone  
voltagemodecontrollerinaprimary-sidecontrolarchitec-  
ture with optoisolator feedback. Voltage feedforward pro-  
vides excellent line regulation and transient response.  
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.  
PolyPhase is a registered trademark of Linear Technology Corporation. All other  
trademarks are the property of their respective owners. Patent Pending  
Voltage Feedforward for Fast Transient Response  
Available in 16-Lead Narrow SSOP Package  
U
APPLICATIO S  
■
Isolated 48V Telecommunication Systems  
■
Internet Servers and Routers  
■
Distributed Power Step-Down Converters  
■
Automotive and Heavy Equipment  
U
TYPICAL APPLICATIO  
36V –72V to 3.3V/20A Isolated 2-Switch Forward Converter  
+
+
V
IN  
V
OUT  
L1  
1.2µH  
MURS120  
T1  
1.2Ω  
•
•
Si7852DP  
Si7852DP  
330µF  
6.3V  
×3  
1µF  
100V  
x3  
Si7336ADP  
×2  
Si7336ADP  
MURS120  
CMPSH1-4  
2mΩ  
2W  
30mΩ  
1W  
10µF  
–
–
V
V
IN  
OUT  
CZT3019  
100k  
BAS21  
2.2µF  
102k  
FQT7N10  
L1: COILCRAFT SER2010-122  
T1: PULSE PA0807  
0.22µF  
T2: PULSE PA0297  
FG  
SW SG  
V
NDRV  
V
CC  
IN  
–
+
I
I
S
FS/SYNC  
365k  
1µF  
NDRV  
UVLO  
BOOST TG TS BG IS  
S
T2  
+
+
FB  
FB/IN  
PT  
•
•
LTC3706  
ITH  
680pF  
LTC3705  
V
CC  
–
–
2.2µF  
33nF  
FS/IN  
PT  
SS/FLT  
GND PGND PHASE SLP MODE REGSD  
RUN/SS  
GND PGND VSLMT  
20k  
22.6k  
15k  
162k  
33nF  
3705 TA01  
3705fb  
1
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与LTC3705IGN#TR相关器件

型号 品牌 获取价格 描述 数据表
LTC3705IGN#TRPBF Linear

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 		LTC3705 - 2-Switch Forward Controller and Gate Driver; Package: SSOP; Pins: 16; Temperatur
LTC3706 Linear

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 		Secondary-Side Synchronous Forward Controller with PolyPhase Capability
LTC3706EGN Linear

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 		Secondary-Side Synchronous Forward Controller with PolyPhase Capability
LTC3706EGN#PBF Linear

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 		LTC3706 - Secondary-Side Synchronous Forward Controller with Polyphase Capability; Package
LTC3706EGN#TR Linear

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 		LTC3706 - Secondary-Side Synchronous Forward Controller with Polyphase Capability; Package
LTC3706EGN-PBF Linear

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 		Secondary-Side Synchronous Forward Controller with PolyPhase Capability
LTC3706EGN-TR Linear

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 		Secondary-Side Synchronous Forward Controller with PolyPhase Capability
LTC3706EGN-TRPBF Linear

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 		Secondary-Side Synchronous Forward Controller with PolyPhase Capability
LTC3706IGN Linear

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 		Secondary-Side Synchronous Forward Controller with PolyPhase Capability
LTC3706IGN#PBF Linear

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 		LTC3706 - Secondary-Side Synchronous Forward Controller with Polyphase Capability; Package

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