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FODM3053 Datasheet(PDF) 4 Page - Fairchild Semiconductor

Part No. FODM3053
Description  4-PIN FULL PITCH MINI-FLAT PACKAGE RANDOM PHASE TRIAC DRIVER OUTPUT OPTOCOUPLERS
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Maker  FAIRCHILD [Fairchild Semiconductor]
Homepage  http://www.fairchildsemi.com
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4-PIN FULL PITCH MINI-FLAT PACKAGE
RANDOM PHASE TRIAC DRIVER
OUTPUT OPTOCOUPLERS
FODM3051
FODM3052
FODM3053
11/10/03
Page 4 of 8
© 2003 Fairchild Semiconductor Corporation
Figure 8. Static dv/dt Test Circuit
Vdc
400V
R = 10 k
CTEST
X100
SCOPE
PROBE
PULSE
INPUT
MERCURY
WETTED
RELAY
252 V
0 VOLTS
APPLIED VOLTAGE
WAVEFORM
Vmax =
dv/dt =
0.63 Vmax
=
252
RTEST
D.U.T.
D.U.T.
τ
RC
τ
RC
τ
RC
400 V
Fig. 7 On-State Characteristics
VTM - ON-STATE VOLTAGE (V)
TA = 25°C
-800
-6
-4
-2
0
2
4
6
-600
-400
-200
0
200
400
600
800
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.
τ
RC is measured at this point and
recorded.




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