參數(shù)資料
型號(hào)： VB025MSP
廠商： 意法半導(dǎo)體
英文描述： HIGH VOLTAGE IGNITION COIL DRIVER POWER IC
中文描述： 高壓點(diǎn)火線圈驅(qū)動(dòng)功率集成電路
文件頁數(shù)： 4/7頁
文件大?。?/td> 67K
代理商： VB025MSP
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
inH
High Level Input Voltage
V
CC
= 4.5V
4
V
CC
V
V
inL
Low Level Input Voltage
V
CC
= 5.5V
-0.3
0.8
V
V
in(hys)
Input Threshold
Hysteresis
High Level Input Current
0.4
V
I
inH
V
in
= 4 V
100
μ
A
μ
A
μ
A
I
inL
Low Level Input Current
V
in
= 0.8 V
-100
I
inpd
Input Active Pull-Down
V
in
= 4 V
10
100
V
diagH
High Level Flag Output
Voltage
R
EXT
= 22 K
(see note 3)
R
EXT
= 22 K
(see note 3)
T
j
= 25
o
C
C
EXT
= 1 nF
V
CC
-1
V
CC
V
V
diagL
Low Level Flag Output
Voltage
C
EXT
= 1 nF
0.5
V
I
diagTH
Coil Current Level
Threshold
Coil Current Level
Threshold Drift
High Level Flag Output
Current
Leakage Current On Flag
Output
Antiparallel Diode
Forward Voltage
Single Pulse Avalanche
Energy
Turn-on Delay Time of
Coil Current
(see figure 1)
4.25
4.5
4.75
A
I
diagTD
(see figure 3)
I
diag
I
C
> I
diagTH
V
diag
= 3 V
0.5
TBD
mA
I
diag(leak)
V
in
= LOW
V
CC
= 5.5V
10
μ
A
V
F
I
c
= -1 A
2
V
E
s/b
L = 6 mH
(see figure 4)
R
c
= 0.5
L
c
= 3.75 mH
(see figure 5)
R
c
= 0.5
L
c
= 3.75 mH I
c
= 6.5 A
(see figure 5)
I
C
= 8 A
180
mJ
t
pHL
TBD
μ
s
t
pLH
Turn-off Delay Time of
Coil Current
TBD
μ
s
Note 1: Parametric degradation are allowed with 5.3 < V
b
< 10V and V
b
> 24V.
Note 2: Theprimary coil current value I
cl
must be measured 1ms after desaturation of the power stage.
Note 3: No Internal Pull-Down
(*) Internally limited
ELECTRICAL CHARACTERISTICS
(continued)
PRINCIPLE OF OPERATION
The VB025SP is mainly intended as a high
voltage power switch device driven by a logic
level input and interfacesdirectly to a high energy
electronicignition coil.
The input Vin of the VB025SP is fed from a low
power signal generated by an external controller
that determinesboth dwell time and ignition point.
During Vin high (
≥
4V) the VB025SP increases
current in the coil to the desired, internally set
current level.
After reaching this level, the coil current remains
constant until the ignition point, that corresponds
to the transition of Vin from high to low (typ. 1.9V
threshold).
During the coil current switch-off, the primary
voltage HVc is clamped at an internally set value
Vcl, typically380V.
The transitionfrom saturation to desaturation,coil
current limiting phase, must have the ability to
accomodate
an
overvoltage.
overshootof 20V is allowed.
FEEDBACK
When the collector current exceeds 4.5A, the
feedback signal is turned high and it remains so,
until the input voltage is turned-off.
OVERVOLTAGE
The
VB025SP can
withstand the
transientsof the battery line:
-100V/2msec(R
i
= 10
)
+100V/0.2msec(R
i
= 10
)
+50V/400msec(R
i
= 4.2
, with V
IN
= 3 V)
A
maximum
following
VB025SP
4/7
相關(guān)PDF資料
PDF描述
VB025SP HIGH VOLTAGE IGNITION COIL DRIVER POWER IC
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VB026SP HIGH VOLTAGE IGNITION COIL DRIVER POWER IC
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