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ADUM7234BRZ-RL7 PDF预览

ADUM7234BRZ-RL7

更新时间： 2024-02-29 14:26:28
品牌 Logo 应用领域
亚德诺 - ADI 驱动器接口集成电路光电二极管
页数 文件大小 规格书
12页 267K
描述
Isolated Precision Half-Bridge Driver, 4 A Output

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ADUM7234BRZ-RL7 技术参数

是否无铅： 含铅是否Rohs认证： 符合
生命周期：Active零件包装代码：SOIC
包装说明：,针数：16
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8543.70.99.60风险等级：1.02
Samacsys Description：Half-Bridge Driver接口集成电路类型：HALF BRIDGE BASED PERIPHERAL DRIVER
JESD-30 代码：R-PDSO-G16JESD-609代码：e3
湿度敏感等级：1端子数量：16
输出电流流向：SOURCE AND SINK标称输出峰值电流：4 A
封装主体材料：PLASTIC/EPOXY封装形状：RECTANGULAR
封装形式：SMALL OUTLINE峰值回流温度（摄氏度）：260
认证状态：Not Qualified表面贴装：YES
端子面层：Matte Tin (Sn)端子形式：GULL WING
端子位置：DUAL处于峰值回流温度下的最长时间：30

ADUM7234BRZ-RL7 数据手册

 浏览型号ADUM7234BRZ-RL7的Datasheet PDF文件第6页浏览型号ADUM7234BRZ-RL7的Datasheet PDF文件第7页浏览型号ADUM7234BRZ-RL7的Datasheet PDF文件第8页浏览型号ADUM7234BRZ-RL7的Datasheet PDF文件第10页浏览型号ADUM7234BRZ-RL7的Datasheet PDF文件第11页浏览型号ADUM7234BRZ-RL7的Datasheet PDF文件第12页 
ADuM7234  
5V  
15V  
The insulation lifetime of the ADuM7234 depends on the  
V
15V  
DD1  
GND  
voltage waveform type imposed across the isolation barrier.  
The iCoupler insulation structure degrades at different rates  
depending on whether the waveform is bipolar ac, unipolar  
ac, or dc. Figure 14, Figure 15, and Figure 16 illustrate these  
different isolation voltage waveforms.  
1
V
AND V  
DDB  
DDA  
GND AND GND  
A
B
ΔV  
Δt  
15V  
5V  
V
AND V  
DDB  
DDA  
GND AND GND  
A
B
15V  
ΔV  
Δt  
V
DD1  
GND  
1
Bipolar ac voltage is the most stringent environment. The goal  
of a 50-year operating lifetime under the ac bipolar condition  
determines the maximum working voltage recommended by  
Analog Devices.  
Figure 11. Common-Mode Transient Immunity Waveforms, Input to Output  
15V  
V
/V  
15V  
DDA DDB  
GND /GND  
A
B
15V  
V
/V  
DDB DDA  
GND /GND  
B
A
In the case of unipolar ac or dc voltage, the stress on the insu-  
lation is significantly lower. This allows operation at higher  
working voltages while still achieving a 50-year service life.  
The working voltage listed in Table 3 can be applied while  
maintaining the 50-year minimum lifetime provided the voltage  
conforms to either the unipolar ac or dc voltage cases. Any cross  
insulation voltage waveform that does not conform to Figure 15  
or Figure 16 should be treated as a bipolar ac waveform, and its  
peak voltage should be limited to the 50-year lifetime voltage  
value listed in Table 3. Note that the voltage presented in Figure 15  
is shown as sinusoidal for illustration purposes only. It is meant  
to represent any voltage waveform varying between 0 V and  
some limiting value. The limiting value can be positive or  
negative, but the voltage cannot cross 0 V.  
ΔV  
Δt  
15V  
15V  
V
/V  
DDA DDB  
GND /GND  
V
GND /GND  
A
B
15V  
ΔV  
Δt  
/V  
DDB DDA  
A
B
Figure 12. Common-Mode Transient Immunity Waveforms,  
Between Outputs  
V
/V  
DDA DDB  
ΔV  
DD  
Δt  
V
/V  
DDA DDB  
GND /GND  
GND /GND  
A B  
A
B
Figure 13. Transient Immunity Waveforms, Output Supplies  
INSULATION LIFETIME  
All insulation structures eventually break down when subjected to  
voltage stress over a sufficiently long period. The rate of insulation  
degradation depends on the characteristics of the voltage waveform  
applied across the insulation. In addition to the testing performed  
by the regulatory agencies, Analog Devices conducts an extensive  
set of evaluations to determine the lifetime of the insulation struc-  
ture within the ADuM7234.  
RATED PEAK VOLTAGE  
0V  
Figure 14. Bipolar AC Waveform  
RATED PEAK VOLTAGE  
Analog Devices performs accelerated life testing using voltage  
levels higher than the rated continuous working voltage. Acce-  
leration factors for several operating conditions are determined.  
These factors allow calculation of the time to failure at the  
actual working voltage. Table 3 lists the peak voltage for 50  
years of service life for a bipolar ac operating condition and the  
maximum Analog Devices recommended working voltage. In  
many cases, the approved working voltage is higher than the 50-  
year service life voltage. Operation at these high working  
voltages can lead to shortened insulation life in some cases.  
0V  
Figure 15. Unipolar AC Waveform  
RATED PEAK VOLTAGE  
0V  
Figure 16. DC Waveform  
Rev. A | Page 9 of 12  
 
 
 
 
 
 
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