Data Sheet

FODM30XX — 4-Pin Full Pitch Mini-Flat Package Random-Phase Triac Driver Output Optocouplers
Typical Application Information
Figure 10. Static dv/dt Test Circuit
Figure
11. Resistive Load
Vdc
600
V (FODM3052)
(FODM3053)
400
V (FODM3022)
(FODM3023)
250
V (FODM3011)
(FODM3012)
R = 10 kΩ
C
TEST
X100
SCOPE
PROBE
PULSE
INPUT
MERCURY
WETTED
RELAY
378 V (FODM3052, FODM3053)
252 V (FOMD3022, FODM3023)
158 V (FODM3011, FODM3012)
0 VOLTS
APPLIED VOLTAGE
WAVEFORM
V
max
=
dv/dt =
0.63 V
max
R
TEST
D.U.T.D.U.T.
τ
RC
τ
RC
Figure 12. Inductive Load with Sensitive Gate Triac (I
GT
≤ 15 mA)
V
CC
R
in
1
2
4
3
0.1 μF
180
C1
2.4 k
Z
L
120 V
60 Hz
FODM3011
FODM3012
FODM3022
FODM3023
FODM3052
FODM3053
V
CC
R
in
1
2
4
3
120 V
60 Hz
180
R
L
FODM3011
FODM3012
FODM3022
FODM3023
FODM3052
FODM3053
600 V (FODM3052, FODM3053)
= 400 V (FODM3022, FODM3023)
= 250 V (FODM3011, FODM3012)
=
378
τ
RC
(FODM3053)
(FODM3052)
=
252
τ
RC
(FODM3023)
(FODM3022)
=
158
τ
RC
(FODM3011)
(FODM3012)
1. The mercury wetted relay provides a high speed
repeated pulse to the D.U.T.
2. 100x scope probes are used, to allow high speeds and
voltages.
3. The worst-case condition for static dv/dt is established by
triggering the D.U.T. with a normal LED input current,
then removing the current. The variable R
TEST
allows the
dv/dt to be gradually increased until the D.U.T. continues
to trigger in response to the applied voltage pulse, even
after the LED current has been removed. The dv/dt is
then decreased until the D.U.T. stops triggering. τ
RC
is
measured at this point and recorded.
NOTE: This optoisolator should not be used to drive a load directly. It is
intended to be a trigger device only.
Ω
Ω
Ω
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