STMICROELECTRONICS VB325

VB325SP
®
HIGH VOLTAGE IGNITION COIL DRIVER
POWER I.C.
TYPE
VB325SP
Vcl
380V
Icl
10A
ICC
150mA
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
■ LOW VOLTAGE CLAMP THERMAL
SHUTDOWN
■
■
10
1
PowerSO-10™
DESCRIPTION
The VB325SP is a high voltage power integrated
circuit made using the STMicroelectronics
VIPower™ M1-3 technology, with vertical current
flow power darlington and logic level compatible
driving circuit. The enable pin allows to externally
block the switch when the input is on. Built-in
protection circuit for coil current limiting and
collector voltage clamping allows the device to be
used as smart, high voltage, high current interface
in advanced electronic ignition system. If the input
signal from the micro happens to remain high, the
device protects itself against over-heating by
forcing collector current to smooth decrease (low
voltage clamp feature) and no undesidered spark
occurs (see figure 4).
BLOCK DIAGRAM
BD
VCC
HVC
VIN
DRIVER
QUASI PROP.
BASE CURRENT
RSENSE
LIMITER
DIAGNOSTIC
OUTPUT
VCC
VR
VF1
-
VLIM
THERMAL
PROTECTION
REFERENCE
VTH
SN
E
November 2003
LGND
GND
1/9
VB325SP
ABSOLUTE MAXIMUM RATING
Symbol
HVc
IC
IC(gnd)
VCC
Is
Is(gnd)
VIN
IIN
fIN
VOUT(flag)
IOUT(flag)
Pmax
Es/b
VESD
VESD
VESD
IBD
VBD
Tj
Tstg
VE
IE
Parameter
Collector voltage (Internally limited)
Collector current (Internally limited)
DC current on Emitter Power
Driving stage supply voltage
Driving circuitry supply current
DC current on Ground pin
Input voltage
Maximum Input Current
Logic Input Frequency in Operative Mode
Output Voltage Primary Threshold Current Level
Flag Output Current
Power Dissipation (Tc=25°C)
Self Clamped Energy during Output Power Clamping (See figure 2)
ESD voltage (HVc pin)
ESD voltage (Enable pin)
ESD voltage (Other pins)
Input Darlington Base Current
Input Darlington Base Voltage
Operating Junction Temperature
Storage temperature Range
Maximum Enable Voltage
Maximum Enable Current
Value
-0.3 to Vclamp
10
± 10.5
-0.3 to 7
± 200
±1
-0.3 to VCC + 0.3
100
DC to 150
-0.3 to VCC + 0.3
100
125
275
±4
+ 1.5 ; -2
±2
150
Internally limited
-40 to 150
-55 to 150
-0.3 to 5.5
± 150
Unit
V
A
A
V
mA
A
V
mA
Hz
V
mA
W
mJ
KV
KV
KV
mA
V
°C
°C
V
µA
Value
1
51
Unit
°C/W
°C/W
THERMAL DATA
Symbol
Rthj-case
Rthj-amb
Parameter
Thermal resistance junction-case
Thermal resistance junction-ambient
(MAX)
(MAX)
PIN FUNCTION
No
1-5
2-3-4
6
7
8
9
10
TAB
Name
LGND
GND
E
VCC
BD
INPUT
FLAG
HVC
Function
Signal Ground
Emitter Power Ground
Enable (*)
Logic Supply Voltage
Base Darlington
Logic input channel (Internal Pull Down)
Diagnostic Output Signal (Open Emitter)
Primary Coil Output Driver (Open Collector)
(*) When grounded the Input is Enabled
CONNECTION DIAGRAM (TOP VIEW)
Pin 1 and Pin 5 must be externally connected to Pins 2÷4.
5
4
3
6
7
8
9
E
VCC
BD
INPUT
FLAG
2
10
1
TAB
HVC
2/9
LGND
GND
GND
GND
LGND
VB325SP
ELECTRICAL CHARACTERISTICS (5.3V < Vbat < 24V; VCC=5V ± 10%; -40ºC < Tj < 125ºC; Rcoil=580mΩ;
Lcoil=3.75mH unless otherwise specified; See note 1)
Symbol
Vcl
Vlcl
Vce(sat)
ICC(stdby)
ICC
Parameter
High Voltage Clamp
Low Voltage Clamp
Power Stage Saturation
Voltage
Stand-by Supply Current
DC Logic Current
Es/b
Peak DC Logic Current
during On Phase
DC Logic Voltage
Coil Current Limit
Output Off State Current
High Level Input Voltage
Low Level Input Voltage
Input Threshold Hysteresis
High Level Input Current
Low Level Input Current
Input Active Pull Down
High Level Flag Output
Voltage
Low Level Flag Output
Voltage
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
tON
Turn-on time
tOFF
Turn-off time
ICC(peak)
VCC
Icl
Ic(off)
VINH
VINL
VIN(hyst)
IINH
IINL
IINpd
VdiagH
VdiagL
IdiagTH
IdiagTD
Idiag
Idiag(leak)
VF
Tsd
VEH
VEL
Test Conditions
Icoil=6.5A
Icoil=6.5A; Tj=Tsd
Min
320
30
IC=6A; VIN=4V
Typ
380
40
Max
420
50
Unit
V
V
1.5
2
V
11
mA
40
mA
150
mA
5.5
11
5
VCC
0.8
IN=Off
Vb=16V; IC=6.5A; f=100Hz; Load = Coil;
VCC=5.5V
IC=6.5A
-40ºC < Tj < 125ºC (See note 2)
IN=Off; VHVC=24V; VCC=5V; Tj=25ºC
VCC=4.5V
VCC=5.5V
VIN=4V
VIN=0.8V
VIN=4V
REXT=22KΩ; CEXT=1nF (See note 3)
100
4.5
9
0
10
100
30
100
V
A
mA
V
V
V
µA
µA
µA
VCC - 1
VCC
V
0.5
V
4.75
A
4
-0.3
0.4
REXT=22KΩ; CEXT=1nF (See note 3)
Tj=25ºC
4.25
4.5
(See figure 1)
IC > IdiagTH; Vdiag=3V
0.5
mA
VIN=Low; VCC=5.5V
10
µA
IC= -1A
2
V
L=6mH; IC= 8A
180
Rc=0.5Ω; Lc=3.75mH; Tj=25ºC;
Vbat=13V (See figure 6)
Rc=0.5Ω; Lc=3.75mH; I C=6.5A; Tj=25ºC;
Vbat=13V (See figure 6)
Thermal shut-down
intervention
High Level Enable Voltage VIN=VINH; OUT=Off (See Note 4)
Low Level Enable Voltage VOUT free to follow VIN
mJ
1
5
µs
15
25
µs
150
ºC
2
0.40
V
V
Note 1: parametric degratation 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.
Note 4: if ENABLE pin is floating OUT=Off for every input status.
(*) Internally Limited
3/9
VB325SP
ELECTRICAL CHARACTERISTICS (continued)
Symbol
IEH
IEL
VBD(off)
VBD(on)
Parameter
High Level Enable Current
Low Level Enable Current
Base Darlington Voltage Off
Base Darlington Voltage On
Test Conditions
VE=5V
VE<0.4V
VE=VEH
VIN=VINH; VE=VEL; IC=6.5A
PRINCIPLE OF OPERATION
The VB325SP 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 VB325SP is fed from a low
power signal generated by an external controller
that determinesboth dwell time and ignition point.
During Vin high (≥ 4V) the VB325SP 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
Figure 1: Flag current Vs. temperature
Min
Typ
Max
500
- 200
1
1.8
Unit
µA
µA
V
V
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 VB325SP 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= 3V)
Figure 2: Single pulse avalanche energy capability
700
650
600
550
Tc=25º
C
500
450
E (mJ)
400
350
300
250
Tc=150º
200
150
100
50
0
0
10
20
30
40
50
60
L (mH)
4/9
70
80
90
100
110
VB325SP
Figure 3: Self Clamped Inductive Switching
Current Vs. Time
Figure 4: Low voltage clamp feature
10
Inductive Current (A)
8
T=25º
6
4
T=150º
2
0
200
300
400
500
600
700
800
900
1000
Time in Clamp (µsec)
Figure 5: Typical application diagram
+5V
Vbat
1µF
100nF
1K
VIN
VCC
BD
HVC
1K
E
µP
1K
FLAG
1nF
18K
LGND
GND
ENABLE pin can be alternatively connected to LGND
5/9
VB325SP
Figure 6: Switching time for inductive load
Vbat
Rgen
C
D.U.T
Vgen
E
Vgen
t
VCC
100V
Vbat
3V
tOFF
tON
6/9
t
VB325SP
PowerSO-10™ MECHANICAL DATA
mm.
DIM.
MIN.
A
A (*)
A1
B
B (*)
C
C (*)
D
D1
E
E2
E2 (*)
E4
E4 (*)
e
F
F (*)
H
H (*)
h
L
L (*)
α
α (*)
inch
TYP
3.35
3.4
0.00
0.40
0.37
0.35
0.23
9.40
7.40
9.30
7.20
7.30
5.90
5.90
MAX.
MIN.
3.65
3.6
0.10
0.60
0.53
0.55
0.32
9.60
7.60
9.50
7.60
7.50
6.10
6.30
0.132
0.134
0.000
0.016
0.014
0.013
0.009
0.370
0.291
0.366
0.283
0.287
0.232
0.232
1.35
1.40
14.40
14.35
0.049
0.047
0.543
0.545
1.80
1.10
8º
8º
0.047
0.031
0º
2º
TYP.
MAX.
0.144
0.142
0.004
0.024
0.021
0.022
0.0126
0.378
0.300
0.374
300
0.295
0.240
0.248
1.27
0.050
1.25
1.20
13.80
13.85
0.053
0.055
0.567
0.565
0.50
0.002
1.20
0.80
0º
2º
0.070
0.043
8º
8º
(*) Muar only POA P013P
B
0.10 A B
10
H
E
E2
E4
1
SEATING
PLANE
e
B
DETAIL "A"
h
A
C
0.25
D
= D1 =
=
=
SEATING
PLANE
A
F
A1
A1
L
DETAIL "A"
α
P095A
7/9
VB325SP
PowerSO-10™ SUGGESTED PAD LAYOUT
TUBE SHIPMENT (no suffix)
14.6 - 14.9
CASABLANCA
B
10.8- 11
MUAR
C
6.30
C
A
A
0.67 - 0.73
10
9
1
9.5
2
3
B
0.54 - 0.6
All dimensions are in mm.
8
7
4
5
1.27
Base Q.ty Bulk Q.ty Tube length (± 0.5)
6
Casablanca
Muar
50
50
1000
1000
532
532
A
B
C (± 0.1)
10.4 16.4
4.9 17.2
0.8
0.8
TAPE AND REEL SHIPMENT (suffix “13TR”)
REEL DIMENSIONS
Base Q.ty
Bulk Q.ty
A (max)
B (min)
C (± 0.2)
F
G (+ 2 / -0)
N (min)
T (max)
600
600
330
1.5
13
20.2
24.4
60
30.4
All dimensions are in mm.
TAPE DIMENSIONS
According to Electronic Industries Association
(EIA) Standard 481 rev. A, Feb 1986
Tape width
Tape Hole Spacing
Component Spacing
Hole Diameter
Hole Diameter
Hole Position
Compartment Depth
Hole Spacing
W
P0 (± 0.1)
P
D (± 0.1/-0)
D1 (min)
F (± 0.05)
K (max)
P1 (± 0.1)
All dimensions are in mm.
24
4
24
1.5
1.5
11.5
6.5
2
End
Start
Top
No components
Components
No components
cover
tape
500mm min
Empty components pockets
saled with cover tape.
500mm min
User direction of feed
8/9
1
VB325SP
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 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
are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.
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 2003 STMicroelectronics - Printed in ITALY- All Rights Reserved.
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