參數(shù)資料
型號: ADUM1234BRWZ-RL1
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): 8/12頁
文件大?。?/td> 205K
代理商: ADUM1234BRWZ-RL1
ADuM1234
APPLICATION NOTES
COMMON-MODE TRANSIENT IMMUNITY
In general, common-mode transients consist of linear and
sinusoidal components. The linear component of a common-
mode transient is given by
V
CM, linear
= (ΔV/Δ
t
)
t
where Δ
V
t
is the slope of the transient shown in Figure 11
and Figure 12.
The transient of the linear component is given by
dV
CM
/
dt
= ΔV/Δ
t
Figure 8 characterizes the ability of the ADuM1234 to operate
correctly in the presence of linear transients. The data is based
on design simulation and is the maximum linear transient
magnitude that the ADuM1234 can tolerate without an
operational error. This data shows a higher level of robustness
than what is listed in Table 5 because the transient immunity
values obtained in Table 5 use measured data and apply
allowances for measurement error and margin.
Rev. 0 | Page 8 of 12
TEMPERATURE (°C)
100
–40
0
40
80
–20
20
60
T
400
300
200
350
250
150
100
50
0
WORST-CASE PROCESS VARIATION
BEST-CASE PROCESS VARIATION
0
Figure 8. Transient Immunity (Linear Transients) vs. Temperature
The sinusoidal component (at a given frequency) is given by
V
CM, sinusoidal
=
V
0
sin(2π
ft
)
where:
V
0
is the magnitude of the sinusoidal.
f
is the frequency of the sinusoidal.
The transient magnitude of the sinusoidal component is given by
dV
CM
/
dt
= 2π
f V
0
Figure 9 and Figure 10 characterize the ability of the
ADuM1234 to operate correctly in the presence of sinusoidal
transients. The data is based on design simulation and is the
maximum sinusoidal transient magnitude (2πf V
0
) that the
ADuM1234 can tolerate without an operational error. Values
for immunity against sinusoidal transients are not included in
Table 5 because measurements to obtain such values have not
been possible.
FREQUENCY (MHz)
2000
0
500
1000
1500
1750
250
750
1250
T
300
200
100
250
150
0
50
WORST-CASE PROCESS VARIATION
BEST-CASE PROCESS VARIATION
0
Figure 9. Transient Immunity (Sinusoidal Transients),
27°C Ambient Temperature
FREQUENCY (MHz)
2000
0
500
1000
1500
1750
250
750
1250
T
250
100
150
200
50
0
WORST-CASE PROCESS VARIATION
BEST-CASE PROCESS VARIATION
0
Figure 10. Transient Immunity (Sinusoidal Transients),
100°C Ambient Temperature
GND
1
V
DD1
Δ
V
Δ
t
Δ
V
Δ
t
5V
GND
1
V
DD1
15V
15V
GND
A
AND GND
B
V
DDA
AND V
DDB
5V
GND
A
AND GND
B
V
DDA
AND V
DDB
15V
15V
0
Figure 11. Common-Mode Transient Immunity Waveforms, Input to Output
GND
A
/GND
B
V
DDB
/V
DDA
Δ
V
Δ
t
Δ
V
Δ
t
15V
GND
A
/GND
B
V
DDA
/V
DDB
15V
15V
GND
A
/GND
B
V
DDA
/V
DDB
15V
GND
B
/GND
A
V
DDB
/V
DDA
15V
15V
0
Figure 12. Common-Mode Transient Immunity Waveforms,
Between Outputs
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