參數(shù)資料
型號: ADUM1234
廠商: Analog Devices, Inc.
英文描述: Isolated, Precision Half-Bridge Driver, 0.1 A Output
中文描述: 隔離,精密半橋驅(qū)動器,0.1 A輸出
文件頁數(shù): 1/12頁
文件大?。?/td> 205K
代理商: ADUM1234
Isolated, Precision
Half-Bridge Driver, 0.1 A Output
ADuM1234
FEATURES
Rev. 0
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 registered trademarks are the 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
2007 Analog Devices, Inc. All rights reserved.
www.analog.com
Isolated high-side and low-side outputs
High side or low side relative to input: ±700 V
PEAK
High-side/low-side differential: 700 V
PEAK
0.1 A peak output current
CMOS input threshold levels
High frequency operation: 5 MHz maximum
High common-mode transient immunity: >75 kV/μs
High temperature operation: 105°C
Wide body, RoHS compliant, 16-lead SOIC
UL1577 2500 V rms input-to-output withstand voltage
APPLICATIONS
Isolated IGBT/MOSFET gate drives
Plasma displays
Industrial inverters
Switching power supplies
GENERAL DESCRIPTION
The ADuM1234
1
is an isolated, half-bridge gate driver that
employs the Analog Devices, Inc.
i
Coupler 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
i
Coupler
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 ADuM1234 offers the benefit
of true, galvanic isolation between the input and each output.
Each output can be operated up to ±700 V
PEAK
relative to the
input, thereby supporting low-side switching to negative voltages.
The differential voltage between the high side and low side can be
as high as 700 V
PEAK
.
As a result, the ADuM1234 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
DISABLE
NC
NC
V
DD1
NC
V
DDB
V
OB
GND
B
5
6
7
8
12
11
GND
1
NC
4
13
V
DD1
GND
A
3
14
V
IB
V
OA
2
15
V
IA
V
DDA
1
16
10
9
0
NC = NO CONNECT
ADuM1234
Figure 1.
1
Protected by U.S. Patents 5,952,849; 6,873,065; 7,075,329. Other patents pending.
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