參數(shù)資料
型號: TDE1890
廠商: 意法半導(dǎo)體
英文描述: 2A High-Side Driver Industrial Intelligent Power Switch(工業(yè)智能功率開關(guān),2A高邊驅(qū)動器)
中文描述: 甲高邊驅(qū)動器工業(yè)智能功率開關(guān)(工業(yè)智能功率開關(guān),甲高邊驅(qū)動器)
文件頁數(shù): 8/12頁
文件大?。?/td> 111K
代理商: TDE1890
- All electricalparametersof the device, con-
cerningthe calculation, are at maximum val-
ues.
- Thermal shutdownthresholdis at minimum
value.
Therefore:
V
s
= 30V, R
DSON0
= 0.23
, I
q
= 8mA, I
os
= 4mA
@ V
os
= 2.5V,
Θ
Lim = 135
°
C
R
thj-amb
= 35
°
C/W
It follows:
I
outx
= 2.5A,R
DSONx
= 0.386
, P
q
= 240mW,
P
os
= 110mW
From equation 4 we can see that, without any
heatsink, it is not possible to operate in the ON
steady state at the maximum current value. A
derating curve for this case is reported in fig. 7.
Usingan externalheatsink,in orderto obtain a to-
tal R
th
of 15
°
C/W, we obtain the derating curve
reportedin fig.8.
0
20
40
60
80
100
120
0.0
0.5
1.0
1.5
2.0
2.5
D93IN033
Io
(A)
Tamb(
°
C)
Figure 7:
Max. Output Current vs. Ambient
Temperature(Multiwatt without
heatsink,R
th j-amb
= 35
°
C/W)
0
20
40
60
80
100
120
0.0
0.5
1.0
1.5
2.0
2.5
D93IN020A
Io
(A)
Tamb(
°
C)
Figure8:
Max.OutputCurrent vs. Ambient
Temperature (Multiwattwith heatsink,
R
th j-amb
= 15
°
C/W)
+
-
+IN
-IN
D1
D2
CONTROL
LOGIC
Ios
LOAD
OUTPUT
OUTPUT STATUS
GND
μ
P POLLING
+Vs
DC BUS 24V +/-25%
D93IN014
Figure 6:
ApplicationCircuit
TDE1890 - TDE1891
8/12
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