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參數(shù)資料
| 型號(hào)： | ADUM7234BRZ |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 外設(shè)及接口 |
| 英文描述： | Isolated Precision Half-Bridge Driver, 4 A Output, 16 Pin SOIC, Ind Temp |
| 中文描述： | 4 A HALF BRIDGE BASED PRPHL DRVR, PDSO16 |
| 封裝： | ROHS COMPLIANT, MS-012AC, SOIC-16 |
| 文件頁數(shù)： | 1/12頁 |
| 文件大?。?/td> | 266K |
| 代理商： | ADUM7234BRZ |
Isolated Precision Half-Bridge Driver,
4 A Output
ADuM7234
Rev. A
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
2010 Analog Devices, Inc. All rights reserved.
FEATURES
Isolated high-side and low-side outputs
Working Voltage
High-side or low-side relative to input: ±350 V peak
High-side/low-side differential: 350 V peak
4 A peak output current
High frequency operation: 1 MHz maximum
High common-mode transient immunity: >25 kV/μs
High temperature operation: 105°C
Narrow body, 16-lead SOIC
Safety and regulatory approvals (pending)
UL recognition
UL 1577 1000 V rms input-to-output withstand voltage
APPLICATIONS
Isolated IGBT/MOSFET gate drives
Plasma displays
Industrial inverters
Switching power supplies
GENERAL DESCRIPTION
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
LEDs are avoided.
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.
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
ENCODE
DECODE
ENCODE
DECODE
ADuM7234
DISABLE
NC
VDD1
NC
VDDB
VOB
GNDB
5
6
7
8
12
11
GND1
NC
4
13
VDD1
GNDA
3
14
VIB
VOA
2
15
VIA
VDDA
1
16
10
9
07
990
-00
1
Figure 1.
1 Protected by U.S. Patents 5,952,849 and 6,291,907.
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