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STMicroelectronics |
VB024
HIGH VOLTAGE IGNITION COIL DRIVER
POWER IC
TYPE
VB024
VCL
400 V
IC Id
8 A 100 mA
s PRIMARY COIL CURRENT INTERNALLY SET
s PRIMARY COIL VOLTAGE INTERNALLY SET
s AUTOMATIC SHUT-OFF AT MAX CURRENT
s LOGIC LEVEL COMPATIBLE INPUT
s DIGITAL SIGNAL FEEDBACK TO INDICATE
A PREDETERMINED CURRENT LEVEL
DESCRIPTION
The VB024 is a high voltage integrated circuit
made using SGS-THOMSON VIPower thecnology,
with vertical current flow power darlington and logic
level compatible driving circuit.
The device performs the following functions:
power stage for driving the primary side of the
ignition coil, digital signal feedback to the control
IC to indicate a predetermined current level,
automatic shut-off at maximum current, self
clamping for voltage flyback and logic level input.
ISOWATT7
BLOCK DIAGRAM
September 1993
1/8
VB024
ABSOLUTE MAXIMUM RATING
Symb ol
HVC
IC
Vd
Id
Vin
Vs
Is
Tj
Tstg
Pa ra met er
Collector Voltage
Collector Current
Driving Stage Supply Voltage
Driving Circuitry Supply Current
Maximum Input Voltage
Control Circuitry Supply Voltage
Control Circuitry Supply Current
Operating Junction Temperature
Storage Temperature Range
THERMAL DATA
Rthj-case Thermal Resistance Junction Case
Rthj-amb Thermal Resistance Junction Ambient
CONNECTION DIAGRAM
Value
Internally Limited
Internally Limited
16
600
10
8
200
-40 to 150
-55 to 150
Unit
V
A
V
mA
V
V
mA
oC
oC
(MAX)
(MAX)
2.5
30
oC/ W
oC/ W
PIN FUNCTION
No NAME
F UNC TI ON
1
GND
Emitter Power and Control Ground
2 LATCH ENABLE Enables Of The Latch Circuitry Which Turn Off The Driver
3 Vd Supply Voltage For The Power Stage
4
OUT
Output to The Primary Coil
5 Vs Supply Voltage For The Control Stage
6 INPUT
7
F LA G
Output of A Logic Signal When Ic Is Greater Than 3 A
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