Fig. 4 : Peak current limit

PEAK CURRENT LIMIT

Thi s com po nen t i s des ig ne d to wit h st and

Ip = 150A for a pulse duration of 10

µs for an ambi-

ent temperature of 90

°C.

The curve of peak current versus the pulse dura-

tion allows us to verify if the application is within the

FLC operating limit.

6

8

10

12

14

110

120

130

140

150

160

170

180

190

t(

µs)

Ip (A)

POWER LOSSES (For 10

µs, see note 1)

To evaluate the power losses, please use the following equations :

2

T(RMS)

2

F(RMS)

In this mode and transistor T is saturated and stops

the spark generation.

In order to keep the thyristor Th in blanking mode

and because of the power dissipation, the Resistor

(Rs) has to keep a minimum value of 22 k

Ω (see

next curve) :

0

20406080

100

120

0

20

40

60

80

100

Tamb (

°C)

Rs (kohms)

Rs max

Rs min

Vac = 220V +15%

-10%

®

FLC02-200D

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