VB027
HIGH VOLTAGE IGNITION COIL DRIVER
/ VB027(011Y) / VB027(012Y)
POWER I.C.
TYPE V
VB027
VB027(011Y)
VB027(012Y)
■ PRIMARY COIL VOLTAGE INTERNALLY SET
■ COIL CURRENT LIMIT INTERNALLY SET
■ LOGIC LEVEL COMPATIBLE INPUT
■ DRIVING CURRENT QUASI PROPORTIONAL
cl(min)
300V 9A 130mA
I
cl(max)
I
d(on)max
TO COLLECTOR CURRENT
■ DOUBLE FLAG-ON COIL CURRENT
DESCRIPTION
The VB027, VB027(011Y), VB027(012Y)is a high
voltage power integrated circuit made using the
STMicroelectronics VIPower technology, with
vertical current flow power darlington and logic
level compatible driving circuit. Built-in protection
circuit for coil current limitingand collector voltage
clamping allows the device to be used as smart,
high voltage, high current interface in advanced
electronic ignition system.
BLOCK DIAGRAM
PENTAWATT HV
PENTAWATT HV (011Y)
PENTAWATT HV (012Y)
ORDER CODES:
PENTAWATTHV
PENTAWATTHV (011Y)
PENTAWATTHV (012Y)
VB027
VB027(011Y)
VB027(012Y)
V
d
INPUT
OVERTEMP.
PROTECTION
FLAG 1
FLAG
June 1999 1/9
FLAG 2
+
-
-
+
DRIVER
QUASI PROP.
BASE CURRENT
REFERENCE
HV
GND
C
R
SENSE
VB027 /VB027(011Y) / VB027(012Y)
ABSOLUTE MAXIMUM RATING
Symbol Parameter Value Unit
HV
I
V
I
V
T
T
THERMAL DATA
Symbol Parameter Value Unit
R
thj-case
R
thj-amb
CONNECTION DIAGRAM (TOP VIEW)
Collector voltage Internally limited V
c
Collector current Internally limited A
C
Driving stage supply voltage 7 V
d
Driving circuitry supply current 200 mA
d
Input voltage 10 V
IN
Junction operating temperature -40 to 150 °C
j
Storage temperature -55 to 150 °C
stg
Thermal resistance junction-case (MAX) 1.12 °C/W
Thermal resistance junction-ambient (MAX) 62.5 °C/W
5
4
3
2
1
PIN FUNCTION (PENTAWATT HV)
No Name Function
1 GND Emitter power ground
2V
3HV
d
C
4 INPUT Logic input channel
5 DIAG Diagnostic output signal
Driving stage supply voltage
Primary coil output signal
DIAG
INPUT
HV
C
V
d
GND
2/9
1
VB027 / VB027(011Y)/ VB027(012Y)
ELECTRICAL CHARACTERISTICS (V
specified)
=13.5V; Vd=5V; Tj=25ºC; R
CC
coil
=510m
Ω;
L
=7mH unless otherwise
coil
Symbol Parameter Test Conditions Min Typ Max Unit
V
cg(sat)
V
High voltage clamp -40°C≤Tj≤125°C; IC=6A 300 360 400 V
cl
Power stage saturation
voltage
IC=6A; VIN=4V 1.5 V
Power stage saturation
V
cg(sat)td
I
d(off)
I
d(on)
V
I
I
cl(td)
V
INH
V
INL
I
INH
V
diagH
V
diagL
I
C(diag1)
voltage derating in
IC=6A; VIN=4V; -40°C≤Tj≤125°C2V
temperature
Power-off supply current VIN=0.4V 10 mA
Power-on supply current VIN=4V; IC=6A; -40°C≤Tj≤125°C 130 mA
Driving stage supply
d
voltage
Collector current limit VIN=4V (See note 1) 8 8.5 9 A
cl
Collector current limit drift
with temperature
See figure 3
4.5 5.5 V
High level input voltage 4 5.5 V
Low level input voltage 0 0.8 V
High level input current VIN=4V 200 µA
High level diagnostic
output voltage
Low level diagnostic
output voltage
First threshold level
collector current
R
=22KΩ (See figure 1) 3.5 (*) V
EXT
R
=22KΩ (See figure 1) 0.5 V
EXT
4.25 4.5 4.75 A
d
First threshold level
I
C(diag1)td
collector current drift with
See figure 4
temperature
I
C(diag2)
Second threshold level
collector current
5.45 5.8 6.15 A
Second threshold level
I
C(diag2)td
t
d(off)
t
f(off)
t
d(diag)
t
r(diag)
t
f(diag)
collector current drift with
temperature
Turn-off delay time of
output current
Turn-off fall time of output
current
Delay time of diagnostic
current
Turn-on rise time of
diagnostic current
Turn-off fall time of
diagnostic current
See figure 5
IC=6A; (Seenote 2) 25 µs
=6A 8 µs
I
C
R
=22KΩ (See figure 1) 1 µs
EXT
R
=22KΩ (See figure 1) 1 µs
EXT
R
=22KΩ (See figure 1) 1 µs
EXT
V
Note 1: theprimary coil current value Iclmust be measured 1ms after desaturation of the power stage.
Note 2: timefrom input switchingV
(*) Vd-V
be(on)
until collector voltage equal 200V.
NEG
3/9
1
VB027 /VB027(011Y) / VB027(012Y)
PRINCIPLE OF OPERATION
VB027, VB027(011Y), VB027(012Y) is mainly
The
intended as high voltage power switch device driven by a
logic level input and interfaces directly to a high energy
electronic ignition coil.
The input V
VB027(012Y) is fed from a low power signal generated
of the VB027, VB027(011Y),
IN
by an external controller that determines both dwell time
and ignition point. During V
VB027(011Y), VB027(012Y) increases current in the
high (≥4V) the VB027,
IN
coil to the desired, internally set current level.
When the collector current exceeds 4.5A, the diagnostic
signal is turned high and it remains so, until the load
current reaches 5.8A (second threshold). At that value,
the diagnostic signal is turned low, and the µC forces the
V
to the low state. During the coilcurrent switch-off, the
IN
primary voltage HV
diodes at aninternally set value V
The collector current sensed throughthe R
thanks to the “Current limiter” block that, as soon as theI
is clamped by a series of Zener
C
, typically 360V.
cl
sense
, is limited
level is reached, forces the darlington (using the “Driver”
block) to limit the current provided.
The transition from saturation to desaturation, coil current
limiting phase, must have the ability to accommodate an
overvoltage. A maximum overshoot of 20V is allowed.
There can be some short period of time in which the
output pin (HV
current due to leakage inductances and stray
) is pulled below ground by a negative
C
capacitances of the ignition coil. This can cause parasitic
glitches on the diagnostic output.
VB027(011Y), VB027(012Y)
has a built-in protection
VB027,
circuit thatallows to lock the p-buried layerpotential of the
linear stage to the collector power, when the last one is
pulled underground.
FIGURE 1: Application circuit
THERMAL BEHAVIOUR
You can see in the block diagram of the
VB027(011Y), VB027(012Y)
a box called
overtemperature protection. The purpose of this circuit is
to shift the current level at which the first diagnostic is
activated down of about 1A.
This information can be managed by the micro that can
take the corrective action in order to reduce the power
dissipation. This block is not an effective protection but
just an overtemperature detection. The shift down of the
first flag level cannot be present for temperatures lower
than 125°C.
As an example of its behavior you can suppose a very
simple motor management system in which the micro
does just a simple arithmeticcalculation to decide when to
switch-off the device after thefirst flag threshold.
EXAMPLE:
I
C(DIAG1)
I
cl
switch-off
info after x ms (I
info after kx ms.
C(DIAG1)
=2.5A)
As soon as the temperature rises over the overtemp
threshold, the first diagnostic is shifted down to about
1.5A and, in this example, the switch-off current will be
kx*1.5 / 2.5.
OVERVOLTAGE
The
VB027, VB027(011Y), VB027(012Y) can
withstand the following transients of the battery line:
-100V /2ms (R
+100V / 0.2ms (R
+50V / 400ms(R
=10Ω)
i
=10Ω)
i
=4.2 Ω, with VIN=3V)
i
VB027,
4/9
1
FIGURE 2: Switching waveform
V
IN
2ndThreshold
st
1
Threshold
I
cl
DIAG
VB027 / VB027(011Y)/ VB027(012Y)
FIGURE 3: Maximum IclVS temperature
FIGURE 5: I
C(diag2)
VS temperature
FIGURE 4: I
C(diag1)
VS temperature
5/9
1
1
VB027 / VB027(011Y)/ VB027(012Y)
PENTAWATT HV MECHANICAL DATA
DIM.
A 4.30 4.80 0.169 0.189
C 1.17 1.37 0.046 0.054
D 2.40 2.80 0.094 0.11
E 0.35 0.55 0.014 0.022
F 0.60 0.80 0.024 0.031
G1 4.91 5.21 0.193 0.205
G2 7.49 7.80 0.295 0.307
H1
H2 10.40 0.409
H3
L 15.60 17.30 6.14 0.681
L1 14.60 15.22 0.575 0.599
L2 21.20 21.85 0.835 0.860
L3 22.20 22.82 0.874 0.898
L5 2.60 3 0.102 0.118
L6 15.10 15.80 0.594 0.622
L7 6 6.60 0.236 0.260
M 2.50 3.10 0.098 0.122
M1 4.50 5.60 0.177 0.220
R 0.50 0.02
V4 90° (typ)
Diam 3.65 3.85 0.144 0.152
MIN. TYP MAX. MIN. TYP. MAX.
9.30
mm. inch
9.70 0.366 0.382
10.05
10.40 0.396 0.409
P023H3
6/9
VB027 / VB027(011Y)/ VB027(012Y)
PENTAWATT HV 011Y (horizontal) MECHANICAL DATA
DIM.
A 4.30 4.80 0.169 0.189
C 1.17 1.37 0.046 0.054
D 2.40 2.80 0.094 0.11
E 0.35 0.55 0.014 0.022
F 0.60 0.80 0.024 0.031
G1 4.91 5.21 0.193 0.205
G2 7.49 7.80 0.295 0.307
H1
H2 10.40 0.409
H3
L1 3.90 4.50 0.154 0.177
L2 15.10 16.10 0.594 0.634
L3 4.80 5.40 0.189 0.213
L5 2.60 3.00 0.102 0.118
L6 15.10 15.80 0.594 0.622
L7 6.00 6.60 0.236 0.26
R 0.5
V2 30° (typ)
V4 90° (typ)
DIA 3.65 3.85 0.144 0.152
MIN. TYP MAX. MIN. TYP. MAX.
9.30
mm. inch
9.70 0.366 0.382
10.05
10.40 0.396 0.409
P023H1
7/9
1
VB027 /VB027(011Y) / VB027(012Y)
PENTAWATT HV 012Y (in line) MECHANICAL DATA
DIM.
MIN. TYP MAX. MIN. TYP. MAX.
mm. inch
A 4.3 4.8 0.169 0.189
A1 2.5 3.1 0.098 0.122
b 0.6 0.8 0.024 0.031
b1 0.75 0.9 0.03 0.035
c 0.35 0.55 0.014 0.022
c1 1.22 1.42 0.048 0.056
D 9 9.35 0.354 0.368
D1 15.2 15.8 0.598 0.622
e 2.44 2.64 0.096 0.104
e1 3.71 3.91 0.146 0.154
E 10 10.4 0.394 0.409
L 22.32 22.92 0.879 0.902
L1 25.1 25.7 0.988 1.012
P 3.65 3.95 0.144 0.156
S 2.55 3.05 0.1 0.12
E
P
A
c1
8/9
D1
S
D
L
L1
b1
e
e1
b
c
A1
P010P
1
1
VB027 /VB027(011Y) / VB027(012Y)
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of use of such information nor for any infringement of patents or other rights of third parties which may results from its use. No license is
granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are
subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products
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