CGY 196
b) Pulsed Operation
For the calculation of the permissible pulse load Ptot-max the following formula is applicable:
Ptot-max
= Ptot-DC x Pulse factor
= Ptot-DC x ( Ptot-max / Ptot-DC )
Use the values for Ptot-DC as derived from the above diagram and for the
pulse factor = Ptot-max / Ptot-DC
from the following diagram to get a specific value.
Pulse factor:
Ptot-max should not exceed the absolute maximum rating for the dissipated power
PPulse = ” Pulse peak power ” = 2 W
Siemens Aktiengesellschaft
4
Semiconductor Group
4
16.6.1998
HL HF19P9E8-G11a-A0s1