VB024
HIGH VOLTAGE IGNITION COIL DRIVER
POWER IC
TYPE
VB024
s
s
s
s
s
V
CL
400 V
I
C
8A
I
d
100 mA
PRIMARY COIL CURRENT INTERNALLY SET
PRIMARY COIL VOLTAGE INTERNALLY SET
AUTOMATIC SHUT-OFF AT MAX CURRENT
LOGIC LEVEL COMPATIBLE INPUT
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
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