MOC3031M(2001) Ver la hoja de datos (PDF) - Fairchild Semiconductor
Número de pieza
componentes Descripción
Fabricante
MOC3031M Datasheet PDF : 10 Pages
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MOC3031M
MOC3032M
6-PIN DIP ZERO-CROSS
OPTOISOLATORS TRIAC DRIVER OUTPUT
(250/400 VOLT PEAK)
MOC3033M MOC3041M MOC3042M MOC3043M
+250 for MOC303XM
+400 for MOC304XM
Vdc
PULSE
INPUT
RTEST
MERCURY
WETTED
RELAY
CTEST
R = 10 kΩ
D.U.T.
X100
SCOPE
PROBE
Figure 9. Static dv/dt Test Circuit
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. τRC is measured at this point and
recorded.
APPLIED VOLTAGE
WAVEFORM
158 V
Vmax = 250 V
APPLIED VOLTAGE
WAVEFORM
252 V
Vmax = 400 V
0 VOLTS
dv/dt =
0.63 Vmax
τRC
=
158
τRC
0 VOLTS
τRC
Figure 10. Static dv/dt Test Waveform
(MOC3031M, MOC3032M, MOC3033M)
dv/dt =
0.63 Vmax
τRC
=
252
τRC
τRC
Figure 11. Static dv/dt Test Waveform
(MOC3041M, MOC3042M, MOC3043M)
Typical circuit (Fig 12, 13) for use when hot line switching is required. In this circuit the “hot” side of the line is switched and the load
connected to the cold or neutral side. The load may be connected to either the neutral or hot line.
Rin is calculated so that IF is equal to the rated IFT of the part, 5 mA for the MOC3033M and MOC3043M, 10 mA for the MOC3032M
and MOC3042M, or 15 mA for the MOC3031M and MOC3041M. The 39 ohm resistor and 0.01 µF capacitor are for snubbing of the triac
and may or may not be necessary depending upon the particular triac and load used.
VCC
Rin
1
6 180 Ω
2
MOC3031M
5
MOC3032M
MOC3033M
3
4
39 Ω*
0.01
1k
LOAD
*For highly inductive loads (power factor < 0.5), change this value to 360 ohms.
Figure 12. Hot-Line Switching Application Circuit
(MOC3031M, MOC3032M, MOC3033M)
HOT
VCC
115 VAC
NEUTRAL
Rin
1
6 360 Ω
2
MOC3041M
5
MOC3042M
MOC3043M
3
4
39 Ω*
0.01
330
LOAD
*For highly inductive loads (power factor < 0.5), change this value to 360 ohms.
Figure 13. Hot-Line Switching Application Circuit
(MOC3041M, MOC3042M, MOC3043M)
HOT
240 VAC
NEUTRAL
DS300256 8/06/01
5 OF 9
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