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| FODM3022R2 Datasheet, PDF (6/12 Pages) Fairchild Semiconductor – 4-Pin Full Pitch Mini-Flat Package Random-Phase Triac Driver Output Optocouplers | |||
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Typical Application Information
600V (FODM3052)
(FODM3053)
400V (FODM3022)
(FODM3023)
Vdc
250V (FODM3011)
(FODM3012)
PULSE
INPUT
RTEST
MERCURY
WETTED
RELAY
CTEST
D.U.T.
R = 10 kâ¦
X100
SCOPE
PROBE
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 RTEST 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. ÏRC is
measured at this point and recorded.
APPLIED VOLTAGE
Vmax = 600 V (FODM3052, FODM3053)
= 400 V (FODM3022, FODM3023)
WAVEFORM
378 V (FODM3052, FODM3053)
= 250 V (FODM3011, FODM3012)
252 V (FOMD3022, FODM3023)
0 VOLTS
158 V (FODM3011, FODM3012)
ÏRC
dv/dt =
0.63 Vmax
ÏRC
=
378
ÏRC
(FODM3053)
(FODM3052)
=
252
ÏRC
(FODM3023)
(FODM3022)
NOTE: This optoisolator should not be used to drive a load directly. It is
=
158
ÏRC
(FODM3011)
(FODM3012)
intended to be a trigger device only.
Figure 8. Static dv/dt Test Circuit
RL
Rin
1
4
180
VCC
FODM3011
FODM3012
FODM3022
FODM3023
2
FODM3052
FODM3053
3
Figure 9. Resistive Load
120 V
60 Hz
ZL
Rin
1
4
180
2.4k
VCC
FODM3011
FODM3012
FODM3022
FODM3023
0.1 µF C1
2
FODM3052
FODM3053
3
120 V
60 Hz
Figure 10. Inductive Load with Sensitive Gate Triac (IGT ⤠15 mA)
©2003 Fairchild Semiconductor Corporation
FODM30XX Rev. 1.0.6
6
www.fairchildsemi.com
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