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ELM302X Fiches technique(PDF) 5 Page - Everlight Electronics Co., Ltd

No de pièce ELM302X
Description  4 PIN SOP RANDOM-PHASE TRIAC PHOTOCOUPLER
PDF  11 Pages
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Fabricant  EVERLIGHT [Everlight Electronics Co., Ltd]
Site Internet  http://www.everlight.com
Logo EVERLIGHT - Everlight Electronics Co., Ltd

ELM302X Fiches technique(HTML) 5 Page - Everlight Electronics Co., Ltd

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DATASHEET
4PIN SOP RANDOM-PHASE TRIAC PHOTO COUPLER
ELM302X, ELM305X series
5
Copyright © 2010, Everlight All Rights Reserved. Release Date : JUNE 24, 2013. Issue No:DPC-0000083 Rev.3
www.everlight.com
Figure 8. Static dv/dt Test Circuit & Waveform
Measurement Method
The high voltage pulse is set to the required VPEAK value and applied to the D.U.T. output side through the RC circuit
above.
LED current is not applied.
The waveform VT is monitored using a x100 scope probe. By varying RTEST,
the dv/dt (slope) is increased, until the D.U.T. is observed to trigger (waveform collapses).
The dv/dt is then
decreased until the D.U.T. stops triggering.
At this point, τRC is recorded and the dv/dt calculated.
For example, VPEAK = 400V for EL302X series. The dv/dt value is calculated as follows:
VPEAK
0
Applied VT
Waveform
τRC
0.632 x VPEAK
50
10 k
D.U.T.
RTEST
High Voltage
Pulse Source
CTEST
VT
A
K
T1
T2
0.63 x 400
τRC
dv/dt =
= 252
τRC
0.632 x VPEAK
τRC
dv/dt =



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