MOC3021 Datasheet, PDF (3/7 Pages) Fairchild Semiconductor – 6-Pin DIP Random-phase Optoisolators Triac Driver Output

1.4
1.3
1.2
1.1
1
0.9
0.8
0.7
0.6
–40 –20
0
20
40
60
80 100
TA, AMBIENT TEMPERATURE (°C)
Figure 3. Trigger Current versus Temperature
MOC3021, MOC3022, MOC3023
25
20
q ^{NORMALIZED TO:}
PWin 100 µs
15
10
5
0
1
2
5
10
20
50
100
PWin, LED TRIGGER WIDTH (µs)
Figure 4. LED Current Required to Trigger
versus LED Pulse Width
12
STATIC dv/dt
10
CIRCUIT IN FIGURE 7
8
6
4
2
0
25 30
40
50
60 70
80
TA, AMBIENT TEMPERATURE (°C)
90 100
Figure 5. dv/dt versus Temperature
100
10
1
– 40 – 30 – 20 –10 0 10 20 30 40 50 60 70 80
TA, AMBIENT TEMPERATURE (°C)
Figure 6. Leakage Current, IDRM
versus Temperature
+400
Vdc
PULSE
INPUT
RTEST
MERCURY
WETTED
RELAY
APPLIED VOLTAGE
WAVEFORM
252 V
0 VOLTS
t_RC
R = 10 kΩ
CTEST
D.U.T.
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. t_RC is measured at this point and
recorded.
Vmax = 400 V
ń + + dv dt
0.63 Vmax
t_RC
252
t_RC
Figure 7. Static dv/dt Test Circuit