SP000219532 查看數據表（PDF） - Infineon Technologies
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SP000219532
Infineon Technologies
SP000219532 Datasheet PDF : 16 Pages
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PROFET® ITS711L1
Inductive load switch-off energy
dissipation
E bb
E AS
IN
Vbb
PROFET OUT
=
ST
GND
{L
ZL
RL
Typ. on-state resistance
RON = f (Vbb,Tj ); IL = 1.8 A, IN = high
ELoad
RON [mOhm]
500
450
400
EL
350
300
ER
250
Tj = 150°C
85°C
Energy stored in load inductance:
EL
=
1/2·L·I
2
L
While demagnetizing load inductance, the energy
dissipated in PROFET is
∫ EAS= Ebb + EL - ER= VON(CL)·iL(t) dt,
with an approximate solution for RL > 0 Ω:
EAS= 2IL·R· LL(Vbb + |VOUT(CL)|)
ln
(1+
IL·RL
|VOUT(CL)|
)
200
150
100
50
0
0
25°C
-40°C
10
20
30
40
Vbb [V]
Maximum allowable load inductance for
a single switch off (one channel)5)
L = f (IL ); Tj,start = 150°C, Vbb = 12 V, RL = 0 Ω
L [mH]
1000
Typ. open load detection current
IL(OL) = f (Vbb,Tj ); IN = high
IL(OL) [mA]
140
-40°C
120
100
25°C
100
85°C
80
60
Tj = 150°C
10
40
20
1
1
1.5
2
Infineon Technologies AG
0
0
5 10 15 20 25 30
2.5
3
Vbb [V]
IL [A]
10
2006-Mar-23
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