SGS Thomson Microelectronics VB921ZVSP, VB921ZVFI Datasheet
VB921ZVFI
HIGH VOLTAGE IGNITION COIL DRIVER
TYPE V
VB921ZVFI
VB921ZVSP
n NO EXTERNAL COMPONENT REQUIRED
n INTEGRATED HIGH VOLTAGE CLAMP
n COIL CURRENT LIMIT INTERNALLY SET
n HIGH RUGGEDNESS
cl
340V 7.5A 2.5V
DESCRIPTION
The VB921ZVFI, VB921ZVSP is a monolithichigh
voltage integrated circuit made using the
STMicroelectronics VIPower technology, which
combines a vertical current flow power trilinton
with a coil current limiting circuit and a collector
voltage clamping. The device is particularly
suitable for application in high performance
electronic car ignition, where coil current limitation
and voltage clamping are required.
I
cl
V
cg(sat)
1
ISOWATT220
ORDER CODES:
ISOWATT220
POWERSO-10
/ VB921ZVSP
POWER I.C.
ADVANCED DATA
10
3
2
PowerSO-10
VB921ZVFI
VB921ZVSP
1
BLOCK DIAGRAM
HV
c
V
IN
July 1999 1/7
CONTROL
UNIT
R
SENSE
GND
ND8012
1
VB921ZVFI / VB921ZVSP
ABSOLUTE MAXIMUM RATING
Symbol Parameter
HV
I
V
I
IN
P
T
T
stg
THERMAL DATA
Symbol Parameter
R
thj-case
R
thj-amb
CONNECTION DIAGRAM (TOP VIEW)
Collector Voltage Internally limited V
c
Collector Current Internally limited A
C
Maximum Input Voltage 8 V
IN
Input current 10 mA
Total dissipation at TC=25°C 40 100 W
tot
Junction operating temperature - 40 to 150 °C
j
Storage temperature - 40 to 150 °C
Thermal resistance junction-case (MAX) 3.12 1.25 °C/W
Thermal resistance junction-ambient (MAX) 62.5 62.5 °C/W
Value
ISOWATT220 PowerSO-10
Value
ISOWATT220 PowerSO-10
Unit
Unit
V
IN
V
IN
V
IN
V
IN
V
IN
6
7
8
9
10
5
4
3
2
1
GND
GND
GND
GND
GND
3
2
1V
11
HV
C
ELECTRICAL CHARACTERISTICS (V
=12V; T
CC
=25ºC unless otherwisespecified)
case
Symbol Parameter Test Conditions Min Typ Max Unit
V
I
I
cgo
V
cl
I
cl
Input Voltage 4.2 5.5 V
IN
V
IN
Input Current
=4.2V; IC=5A (See test circuit)
IN
VIN=5V; IC=5A
5
10
Collector Cut-off Current VIN=0V; HVC=250V 250 µA
(*) High voltage clamp -40°C<Tj<125°C 340 440 V
(*) Coil Current Limit
V
=4.2V; -40°C<Tj<125°C
IN
=5V; -40°C<Tj<125°C
V
IN
6
6.5 7.5
(See note 1)
V
cg(sat)
V
∆I
f
Power Stage Saturation
Voltage
IC=5A; IIN=10mA 2.5 V
(**) Diode Forward Voltage If=10A 3.5 V
Coil current variation in
cl
respect to VIN=5V
VIN=4.5 ÷ 5.5V 200 mA
GND
HV
mA
mA
A
A
C
IN
(*) Coil data: primary resistance RC=0.4 ÷ 0.8Ω, primary inductance LC=6 ÷ 8mH
(**) Pulsed: pulse duration= 300µs, duty cycle=1.5%
NOTE 1: Iclis also controlled in respect to the variation of VINbetween 4.5 and 5.5V
2/7
1
VB921ZVFI / VB921ZVSP
FIGURE 1: Delay-off time Vs Temperature
FIGURE 3: Saturation VoltageVS Collector Current
FIGURE 2: Input current Vs Temperature
FIGURE 4: Diode Forward Voltage VS Temperature
FIGURE 5: Coil Current Limit Vs Temperature
FIGURE 6: Clamping Voltage VS Temperature
3/7
11
1
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