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ADUM7234BRZ

更新时间： 2024-11-09 06:36:27
品牌 Logo 应用领域
亚德诺 - ADI 外围驱动器驱动程序和接口接口集成电路光电二极管
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12页 267K
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Isolated Precision Half-Bridge Driver, 4 A Output

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ADUM7234BRZ 数据手册

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Isolated Precision Half-Bridge Driver,  
4 A Output  
ADuM7234  
FEATURES  
GENERAL DESCRIPTION  
Isolated high-side and low-side outputs  
Working Voltage  
High-side or low-side relative to input: 3ꢀ0 V peak  
High-side/low-side differential: 3ꢀ0 V peak  
4 A peak output current  
High frequency operation: 1 MHz maximum  
High common-mode transient immunity: >2ꢀ kV/μs  
High temperature operation: 10ꢀ°C  
Narrow body, 16-lead SOIC  
Safety and regulatory approvals (pending)  
UL recognition  
The ADuM72341 is an isolated, half-bridge gate driver that  
employs the Analog Devices, Inc., iCoupler® technology to  
provide independent and isolated high-side and low-side  
outputs. Combining high speed CMOS and monolithic  
transformer technology, this isolation component provides  
outstanding performance characteristics superior to  
optocoupler-based solutions.  
By avoiding the use of LEDs and photodiodes, this iCoupler  
gate drive device is able to provide precision timing characteristics  
not possible with optocouplers. Furthermore, the reliability and  
performance stability problems associated with optocoupler  
UL 1ꢀ77 1000 V rms input-to-output withstand voltage  
LEDs are avoided.  
APPLICATIONS  
In comparison to gate drivers employing high voltage level  
translation methodologies, the ADuM7234 offers the benefit of  
true, galvanic isolation between the input and each output and  
between each input. Each output may be operated up to 350 V  
peak relative to the input, thereby supporting low-side switching  
to negative voltages. The differential voltage between the high  
side and low side may be as high as 350 V peak.  
Isolated IGBT/MOSFET gate drives  
Plasma displays  
Industrial inverters  
Switching power supplies  
As a result, the ADuM7234 provides reliable control over the  
switching characteristics of IGBT/MOSFET configurations over  
a wide range of positive or negative switching voltages.  
FUNCTIONAL BLOCK DIAGRAM  
ADuM7234  
NC  
1
2
3
4
5
6
7
8
16  
15  
14  
13  
12  
11  
10  
9
V
V
DDA  
V
ENCODE  
DECODE  
IA  
OA  
V
GND  
NC  
IB  
A
V
DD1  
GND  
NC  
1
DISABLE  
V
V
DDB  
V
ENCODE  
DECODE  
DD1  
OB  
NC  
GND  
B
Figure 1.  
1 Protected by U.S. Patents 5,952,849 and 6,291,907.  
Rev. A  
Information furnished by Analog Devices is believed to be accurate and reliable. However, no  
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other  
rights of third parties that may result from its use. Specifications subject to change without notice. No  
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.  
Trademarks and registeredtrademarks arethe property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700  
Fax: 781.461.3113  
www.analog.com  
©2010 Analog Devices, Inc. All rights reserved.  
 
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ADUM7234BRZ 替代型号

型号 品牌 替代类型 描述 数据表
ADUM7234BRZ-RL7 ADI

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 Isolated Precision Half-Bridge Driver, 4 A Output

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