ICC03-400B2 Datasheet, PDF (6/7 Pages) STMicroelectronics – IGNITION CONTROL CIRCUIT

ICC03-400B2
ALTERNATIVE APPLICATION
SUPPLY
CO IL
N
P
FLY-WHEEL
SENS OR
COIL
STOP
D
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R1
ICC03 _TH
4
1
D1
C1
D2
IGNITION
COIL
PR SE
R
3
8
Vs
C2
SPARK
PLUG
see functional diagram page 1
With this type of alternative application, the
operationphases will be the same but the topology
of component integrationis different. This topology
is adapted to applications using the diode D2 in
anti-parallel with the thyristor.
In this case the rectifier diode D must withstand a
reversed voltage up to 1500V following the value of
R1.
With this configurationthe current Ic oscillates, and
its positive part flows through thyristor TH, while
diode D2 assumes the conduction of the negative
parts.
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