MOC3052VM Fairchild Optoelectronics Group, MOC3052VM Datasheet - Page 6

• Manufacturer Part Number: MOC3052VM
• Description: OPTOCOUPLER TRIAC-OUT VDE 6-DIP
• Manufacturer: Fairchild Optoelectronics Group

Specifications of MOC3052VM

• Voltage - Isolation: 7500Vpk
• Number Of Channels: 1
• Voltage - Off State: 600V
• Output Type: AC, Triac, Standard
• Current - Gate Trigger (igt) (max): 10mA
• Current - Hold (ih): 280µA
• Current - Dc Forward (if): 60mA
• Mounting Type: Through Hole
• Package / Case: 6-DIP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output / Channel: -

© 2004 Fairchild Semiconductor Corporation
MOC3051-M
APPLIED VOLTAGE
0 VOLTS
WAVEFORM
PULSE
INPUT
+400
Vdc
100
0.1
10
1
10
Figure 9. Delay Time, t(d), and Fall Time, t(f),
MERCURY
WETTED
RELAY
τ RC
252 V
Figure 10. Static dv/dt Test Circuit
20
R TEST
I
FT
, LED TRIGGER CURRENT (mA)
vs. LED Trigger Current
t(f)
t(d)
30
C TEST
D.U.T.
40
R = 1 kΩ
SCOPE
PROBE
X100
50
dv/dt =
V max = 400 V
0.63 V
60
τ RC
Page 6 of 11
=
τ
OPTOISOLATORS TRIAC DRIVERS
t(delay), t(f) versus I
The triac driver’s turn on switching speed consists of a turn on
delay time t(d) and a fall time t(f). Figure 9 shows that the delay
time depends on the LED trigger current, while the actual
trigger transition time t(f) stays constant with about one micro
second.
The delay time is important in very short pulsed operation
because it demands a higher trigger current at very short
trigger pulses. This dependency is shown in the graph I
versus LED PW.
The turn on transition time t(f) combined with the power triac’s
turn on time is important to the power dissipation of this
device.
1. The mercury wetted relay provides a high speed repeated
2. 100x scope probes are used, to allow high speeds and
3. The worst-case condition for static dv/dt is established by
pulse to the D.U.T.
voltages.
triggering the D.U.T. with a normal LED input current, then
removing the current. The variable R
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
point and recorded.
ISOL. TRANSF.
AC
6-PIN DIP RANDOM-PHASE
10 kΩ
V TM
I FT
FT
t(d)
V TM
t(f)
SCOPE
DUT
(600 VOLT PEAK)
I FT
100 Ω
RC
MOC3052-M
TEST
is measured at this
ZERO CROSS
GENERATOR
EXT. SYNC
DETECTOR
FUNCTION
V out
allows the dv/dt to
115 VAC
PHASE CTRL.
PW CTRL.
PERIOD CTRL.
V o AMPL. CTRL.
FT
9/2/04