EL3031MP5-V データシートの表示（PDF） - EVERLIGHT

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EL3031MP5-V

5 PIN DIP ZERO CROSS TRIAC DRIVER PHOTOCOUPLER

EVERLIGHT 

5 PIN DIP ZERO CROSS TRIAC DRIVER

PHOTOCOUPLER

Figure 10. Static dv/dt Test Circuit & Waveform

D.U.T.

A

K

Zero

Crossing

Circuit

T1

10 kΩ

VT

CTEST

T2

RTEST

50 Ω

EL303X(P5) Series

EL304X(P5) Series

EL306X(P5) Series

EL308X(P5) Series

High Voltage

Pulse Source

0.632 x VPEAK

Measurement Method

Applied VT

Waveform

τRC

VPEAK

0

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.

dv/dt = 0.632 x VPEAK

τRC

For example, VPEAK = 600V for EL306X series. The dv/dt value is calculated as follows:

0.63 x 600

dv/dt =

τRC

378

= τRC

： Everlight Electronics Co., Ltd.

Document No DPC-0000076 Rev. 1

6

http://www.everlight.com

October 12, 2011

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