STMICROELECTRONICS VB025

VB025SP

HIGH VOLTAGE IGNITION COIL DRIVER
POWER IC
T YPE
VB025SP
■
■
■
■
■
Vc l
I cl
Id
380 V
9 A
100 mA
PRIMARY COIL VOLTAGE INTERNALLY SET
COIL CURRENT LIMIT INTERNALLY SET
LOGIC LEVEL COMPATIBLE INPUT
DRIVING CURRENT QUASI
PROPORTIONAL TO COLLECTOR
CURRENT
SINGLE FLAG-ON COIL CURRENT
DESCRIPTION
The VB025SP is a high voltage power integrated
circuit made using STMicroelectronics VIPower
Technology, with vertical current flow power
darlington and logic level compatible driving circuit.
Built-in protection circuits for coil current limiting
and collector voltage clamping allows the
VB025SP to be used as a smart, high voltage,
high current interface in advanced electronic
ignition systems.
10
1
PowerSO-10
BLOCK DIAGRAM
March 1999
1/7
VB025SP
ABSOLUTE MAXIMUM RATING
Symb ol
Parameter
HV C
Collector Voltage (Internally Limited)
IC
Collector Current (Internally Limited)
Value
Unit
-0.3 to Vcl amp
V
10
A
I C(gn d)
DC Current on Emitter Power
± 10.5 (∗)
A
VCC
Driving Stage Supply Voltage
-0.3 to 7
V
± 200
mA
±1
A
-0.3 to VCC + 0.3
V
100
mA
DC to 150
Hz
Is
I s(gnd )
Driving Circuitry Supply Current
DC Current on Ground Pin
Vi n
Input Voltage
I in
Maximum Input Current
f in
Logic Input Frequency in O perative Mode
V out(fl ag)
Output Voltage Primary Threshold Current Level
I out(f lag)
Flag Output Current
o
-0.3 to VCC + 0.3
V
100
mA
P max
Power Dissipation (T C = 105 C)
T BD
W
E s/ b
Clamped Energy During Output Power Clamping
300
mJ
V ESD
ESD Voltage (HVC Pin)
±4
KV
V ESD
ESD Voltage (O ther Pins)
±2
KV
I BD
Input Darlington Base Current
150
mA
V BD
Input Darlington Base Voltage
Internally Limited
Tj
T s tg
V
Operating Junction Temperature
-40 to 150
o
Storage Temperature Range
-55 to 150
o
C
C
(∗) With 10 mils Al wire
THERMAL DATA
Thermal Resistance Junct ion Case
(MAX)
1.2
o
C/W
R thj-h
Thermal Resistance Junct ion Heatsink with FR4
(MAX)
T BD (✭)
o
C/W
T sold
Lead T emperature During Soldering
(MAX)
T BD (✭)
R t hj-ca se
st
(✭) see application note AN515/1094 on VIPower data-book 1 edition.
2/7
o
C
VB025SP
CONNECTION DIAGRAM
PIN FUNCTION
No
NAME
F UNCTIO N
1-5
GND
Emitter Power Ground
6
GND
Control G round (*)
7
V CC
Logic Supply Voltage
8
BD
Base Darlington
9
INPUT
Logic Input Channel (Internal Pull Down)
10
FLAG
Diagnostic Output Signal (Open Emitter)
TAB
HVC
Primary Coil Output Driver (Open Collector)
(*) Pin 6 must be connected to pins 1-5 externally
ELECTRICAL CHARACTERISTICS (5.3V < Vb < 24V; VCC = 5 V ± 10%; -40oC < Tj < 125oC;
Rcoil = 580 mΩ; Lcoil = 3.75 mH; unless otherwise specified; see note 1)
Symbol
V cl
Parameter
Test Cond itions
Min.
Typ.
Max.
Un it
320
380
420
V
1.5
2
V
High Voltage Clamp
I coil = 6.5 A
V ce (sat)
Saturation Voltage of The
Power Stage
I c = 6.5A;
I CC( st dby)
St and-by Supply Current
IN = OF F
10
mA
DC Logic Current
V b = 16 V I c = 6.5 A f = 100 Hz
Load = Coil
V CC = 5.5V
40
mA
Peak DC Logic Current
During On Phase
I c = 6.5 A
150
mA
4.5
5.5
V
8.25
10
A
0.8
mA
0.8
mA
(*)
o
I CC
I CC(pea k)
V CC
Ic l
V in = 4V
(see figure 1)
DC Logic Voltage
o
o
Coil Current Limit
-40 C < Tj < 125 C
(see note 2 and figure 1)
I c( le ak)
Output leakage Current
IN = OF F
I C(inf l)
Collector Current with
Floating Input
VCC = 5 V
R LOAD = 1KΩ;
T Ic_ctr
Thermal Temperature
Output Current Control
OUT = ON
100
V HVC = 24V
VBat = 13.5 V
Input Floating
(see figure 2)
150
C
3/7
VB025SP
ELECTRICAL CHARACTERISTICS (continued)
Symbol
Parameter
Test Cond itions
Min.
Typ.
Max.
Un it
V
V inH
High Level Input Voltage
V CC = 4.5V
4
V CC
V in L
Low Level Input Voltage
V CC = 5.5V
-0.3
0.8
Vi n(h ys )
Input Threshold
Hysteresis
0.4
V
V
Iin H
High Level Input Current
V in = 4 V
100
µA
I inL
Low Level Input Current
V in = 0.8 V
-100
µA
Iin pd
Input Active Pull-Down
V in = 4 V
10
100
µA
V di agH
High Level Flag O utput
Voltage
R EXT = 22 KΩ
(see note 3)
C EXT = 1 nF
V CC -1
V CC
V
V di agL
Low Level Flag O utput
Voltage
R EXT = 22 KΩ
(see note 3)
C EXT = 1 nF
0.5
V
Id iagTH
Coil Current Level
Threshold
T j = 25o C
(see figure 1)
4.75
A
Id iagTD
Coil Current Level
Threshold Drift
(see figure 3)
High Level Flag O utput
Current
I C > I diagTH
V diag = 3 V
Leakage Current O n Flag
Output
V in = LO W
V CC = 5.5V
Antiparallel Diode
Forward Voltage
I c = -1 A
E s/ b
Single Pulse Avalanche
Energy
L = 6 mH
IC = 8 A
(see figure 4)
t pHL
Turn-on Delay Time of
Coil Current
R c = 0.5 Ω L c = 3.75 mH
(see figure 5)
T BD
µs
t pLH
Turn-off Delay Time of
Coil Current
R c = 0.5 Ω L c = 3.75 mH Ic = 6.5 A
(see figure 5)
T BD
µs
Id iag
I dia g(l eak)
VF
4.25
4.5
0.5
T BD
180
mA
10
µA
2
V
mJ
Note 1: Parametric degradation are allowed with 5.3 < Vb < 10V and Vb > 24V.
Note 2: The primary coil current value Icl must be measured 1ms after desaturation of the power stage.
Note 3: No Internal Pull-Down
(*) Internally limited
PRINCIPLE OF OPERATION
The VB025SP is mainly intended as a high
voltage power switch device driven by a logic
level input and interfaces directly to a high energy
electronic ignition coil.
The input Vin of the VB025SP is fed from a low
power signal generated by an external controller
that determines both 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
4/7
voltage HVc is clamped at an internally set value
Vcl, typically 380V.
The transition from saturation to desaturation, coil
current limiting phase, must have the ability to
accomodate an overvoltage. A maximum
overshoot of 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 following
transients of the battery line:
-100V/2msec (Ri = 10 Ω)
+100V/0.2msec (Ri = 10 Ω)
+50V/400msec (Ri = 4.2 Ω, with VIN = 3 V)
VB025SP
Fig. 1 Main Waveforms During On Phase
Fig. 2 Output Current Waveform After Thermal
Protection Activation
Fig. 3 Flag Current Versus Temperature
FIG. 4 Single Pulse Typical Es/b Curve
FIG. 5 Propagation Times Definitions.
200 V
50 %
HVC
10 %
INPUT
10 %
tpHL
t pLH
SC10930
5/7
VB025SP
PowerSO-10 MECHANICAL DATA
mm
DIM.
MIN.
inch
TYP.
MAX.
MIN.
TYP.
MAX.
A
3.35
3.65
0.132
0.144
A1
0.00
0.10
0.000
0.004
B
0.40
0.60
0.016
0.024
c
0.35
0.55
0.013
0.022
D
9.40
9.60
0.370
0.378
D1
7.40
7.60
0.291
0.300
E
9.30
9.50
0.366
0.374
E1
7.20
7.40
0.283
0.291
E2
7.20
7.60
0.283
0.300
E3
6.10
6.35
0.240
0.250
E4
5.90
6.10
0.232
e
1.27
0.240
0.050
F
1.25
1.35
0.049
0.053
H
13.80
14.40
0.543
0.567
1.80
0.047
h
0.50
L
0.002
1.20
q
1.70
0.067
o
α
0.071
8o
0
B
0.10 A B
10
5
e
0.25
B
=
=
=
E4
=
=
=
1
E1
=
E3
=
E2
=
E
=
=
=
H
6
SEATING
PLANE
DETAIL ”A”
A
C
M
Q
h
D
= D1 =
=
=
SEATING
PLANE
A
F
A1
A1
L
DETAIL ”A”
α
0068039-C
6/7
VB025SP
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences
of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is
granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specification mentioned in this publication are
subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products
are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.
The ST logo is a trademark of STMicroelectronics
 1999 STMicroelectronics – Printed in Italy – All Rights Reserved
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