VB025SP
HIGH VOLTAGE IGNITION COIL DRIVER
POWER IC
TYPE V
VB025S P 380 V 9 A 100 mA
■ PRIMARYCOIL VOLTAGEINTERNALLY SET
■ COIL CURRENT LIMIT INTERNALLYSET
■ LOGICLEVEL COMPATIBLE INPUT
■ DRIVINGCURRENT QUASI
cl
I
cl
I
d
PROPORTIONALTO COLLECTOR
CURRENT
■ SINGLE FLAG-ONCOILCURRENT
DESCRIPTION
The VB025SP is a high voltage power integrated
circuit made using STMicroelectronics VIPower
Technology, with vertical current flow power
darlingtonandlogiclevelcompatibledrivingcircuit.
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.
BLOCK DIAGRAM
10
1
PowerSO-10
March 1999
1/7
VB025SP
ABSOLUTEMAXIMUMRATING
Symbol Para met e r Val u e Uni t
HV
I
I
C(gnd)
V
I
I
s(gnd)
V
I
f
V
out(flag)
I
out(flag)
P
max
E
V
ESD
V
ESD
I
BD
V
T
T
(∗) With10 mils Alwire
Collec t or Voltage ( I nternally Limi t ed ) -0. 3 t o V
C
Collec t or Current (I n t ernally Li m ited) 10 A
C
clamp
DC C ur rent on Emitter Powe r ± 10.5 (∗)A
Driving Stage Supply V oltage -0.3 to 7 V
CC
Driving C ir c uit r y Supply Current ± 200 mA
s
DC C ur rent on Groun d P in ± 1A
Input Voltage -0.3 to VCC + 0.3 V
in
Maximum I nput C urrent 100 mA
in
Logic In put Fr eque nc y in O perative Mode DC to 150 Hz
in
Output Volta ge Primary Thres hold Current Level -0.3 to VCC + 0.3 V
Flag Out put Cu rr ent 100 m A
Power Dissi pation (TC = 10 5oC) TBD W
Clampe d Ene r gy D ur in g Out put Power Clampin g 300 m J
s/b
ESD Voltage (HVC Pin) ± 4KV
ESD Voltage (O ther Pins) ± 2KV
Input Darlington Bas e C urrent 150 m A
Input Darlington Bas e V oltage Int er na lly Limit ed V
BD
Oper ating Junction Temperat ure -40 to 150
j
St orage Temperatur e Range -55 to 150
stg
V
o
C
o
C
THERMALDATA
R
thj-case
R
thj-h
T
sold
(✭) see application note AN515/1094on VIPower data-book 1stedition.
Ther mal Res is t an c e Jun ct ion Case (MAX ) 1.2
Ther mal Res is t an c e Jun ct ion Heats i nk wit h FR4 (MA X) TB D (✭)
Lead Temp er a t ur e Durin g Solderin g (MAX ) TB D (✭)
o
C/W
o
C/W
o
C
2/7
CONNECTIONDIAGRAM
PIN FUNCTION
No NAME FUNC TI ON
1-5 GND Emitter Po wer G round
6 GND Contr ol Ground (*)
7V
CC
8 BD Base Da rl ington
9 I NP U T Logi c Inp ut Channel (I ntern al Pul l Dow n)
10 FLAG Diagnost ic O u t pu t Signa l (Op en E m it t e r)
TAB HVC Pr ima r y Coil Output Driv er (Ope n Coll ector)
(*) Pin 6 must beconnected to pins1-5 externally
Logic Supply Voltage
VB025SP
ELECTRICAL CHARACTERISTICS (5.3V < Vb< 24V;VCC=5V±10%; -40oC<Tj<125oC;
R
=580 mΩ;L
coil
Symbol Parameter Test Cond itions Min. Typ. Max. Unit
V
V
ce(sat)
High V oltage C lam p I
cl
Saturation Voltage of The
Power Stage
I
CC(stdby)
I
CC
I
CC(peak)
Stand -by Sup ply Current IN = OFF 10 mA
DC L ogic C ur rent Vb=16V Ic=6.5A f=100Hz
Peak DC Lo gic Current
During On Phase
V
I
I
c( le ak)
I
C(in fl)
DC Logic Voltage 4.5 5.5 V
CC
Coil Cur rent Limi t -40oC<Tj<125oC
cl
Outp ut l eak age C ur rent IN = OFF V
Collect or Current with
Float ing Input
T
Ic_ctr
Therm al Tem peratu r e
Outp ut C urrent C ontrol
= 3.75 mH; unless otherwisespecified; seenote 1)
coil
= 6.5 A 320 380 420 V
coil
Ic=6.5A; Vin=4V 1.5 2 V
Load = C oil V
CC
=5.5V
Ic= 6. 5 A (see f ig ure 1) 100 150 mA
(see not e 2 and figure 1)
= 24V 0.8 mA
HVC
VCC = 5 V VB at = 13. 5 V
=1KΩ; I nput Flo at ing
R
LOAD
OUT = ON (see figure 2) 150 (*)
40 mA
8.25 10 A
0.8 mA
o
C
3/7
VB025SP
ELECTRICAL CHARACTERISTICS (continued)
Symbol Parameter Test Cond itions Min. Typ. Max. Unit
V
V
V
in(hys)
I
inH
I
inL
I
inpd
V
diagH
V
diagL
I
diagTH
I
diagTD
I
diag
I
diag(leak)
V
E
t
pHL
t
pLH
Note 1: Parametricdegradation are allowed with 5.3 < Vb< 10V and Vb> 24V.
Note 2: Theprimary coil current value I
Note 3: No Internal Pull-Down
(*) Internally limited
High Lev e l Input V olt a ge VCC=4.5V 4 V
inH
Low Lev e l Input Vol t ag e VCC=5.5V -0.3 0.8 V
inL
Input Thr esho ld
0.4 V
Hysteresis
High Lev e l Input Cur rent Vin= 4 V 100 µA
Low Lev e l Input Curr ent Vin=0.8V -100 µA
Input Act ive Pull- D own Vin= 4 V 10 100 µA
High Lev e l Flag O utput
Voltage
Low Lev e l Flag Outp ut
Voltage
Coil Cur rent Leve l
=22KΩ C
R
EXT
EXT
=1nF
(see not e 3)
=22KΩ C
R
EXT
EXT
=1nF
(see not e 3)
Tj=25oC (s ee figure 1) 4.25 4.5 4.75 A
V
-1 V
CC
Threshold
Coil Cur rent Leve l
(see figure 3)
Threshold Drift
High Lev e l Flag O utput
IC>I
diagTH
V
=3V 0.5 TBD mA
diag
Current
Leakage Cu rrent On Fla g
Vin=LOW VCC= 5.5V 10 µA
Output
Antiparallel Diode
F
Ic=-1A 2 V
Forward Voltage
Single Pulse Avalanc he
s/b
Energy
Turn-o n Delay Tim e of
Coil Curre nt
Turn-off Delay Tim e of
Coil Curre nt
must bemeasured 1ms after desaturation of the power stage.
cl
L=6mH IC=8A
(see figure 4)
=0.5Ω Lc=3.75mH
R
c
(see figure 5)
=0.5Ω Lc=3.75mH Ic=6.5A
R
c
(see figure 5)
180 mJ
TBD µs
TBD µs
CC
CC
0.5 V
V
V
PRINCIPLEOF 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 ignitionpoint.
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, typically380V.
The transition fromsaturation to desaturation,coil
current limiting phase, must have the ability to
accomodate an overvoltage. A maximum
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 following
transientsof the batteryline:
-100V/2msec(R
+100V/0.2msec(R
+50V/400msec(R
=10Ω)
i
=10Ω)
i
= 4.2 Ω,with VIN=3V)
i
VB025SP
Fig. 1 Main WaveformsDuring On Phase Fig. 2 OutputCurrent Waveform AfterThermal
ProtectionActivation
FIG.4 Single PulseTypicalEs/b CurveFig. 3 FlagCurrent Versus Temperature
FIG. 5 PropagationTimes Definitions.
200 V
50 %
10 %
tt
pHL pLH
HVC
INPUT
10 %
SC10930
5/7
VB025SP
PowerSO-10MECHANICAL DATA
DIM.
mm inch
MIN. 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 0.240
e 1.27 0.050
F 1.25 1.35 0.049 0.053
H 13.80 14.40 0.543 0.567
h 0.50 0.002
L 1.20 1.80 0.047 0.071
q 1.70 0.067
α 0
o
o
8
==
==
HE
h
A
F
A1
610
51
eB
M
0.25
D
==
D1
==
DETAIL”A”
E2
==
DETAIL”A”
Q
B
0.10 A
E1E3
==
SEATING
PLANE
A
C
α
B
E4
==
SEATING
PLANE
A1
L
==
0068039-C
6/7
VB025SP
Information furnished isbelieved tobeaccurate and reliable. However, STMicroelectronics assumes noresponsibility for theconsequences
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 patentrights of STMicroelectronics. Specification mentioned in this publication are
subject tochange without notice. Thispublication supersedes and replaces allinformation previously supplied. STMicroelectronics products
are notauthorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.
The STlogo is atrademark of STMicroelectronics
1999 STMicroelectronics – Printedin Italy– AllRights Reserved
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