P9/9

PDE-3067-1

ECN3067

10.Note of the design margin under the SOA

Following figure Indicates the evaluation as the reference of the SOA (safetyoperation area) under the

Tj=135

°C ( the junction temperature is equal to 135°C) . Dot mark ( · ) shows the points of the IC destruction.

The plural points under the same voltage Indicates the dispersion of the sample.

In this figure, IM and VM are the current and the voltage at the terminal of motorwiring at the change of

phase (turn on and turn off).

Fig. The Safety Operation Area in ECN3067 (reference)

0

2

4

6

8

10

0

100

200

300

400

500

600

VM (V)

Tj=25'C

Tj=135'C