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從網路上找的資料。
1. cold start:
The outdoor units of microwave wireless telecommunication systems set on the roof of
many buildings may have to start and continue working at –40 oC during winter.
Therefore, it is necessary to guarantee the DC/DC converter will turn on at –40 oC.
Sufficient design margin is needed to tolerate the temperature coefficient of ICs and
discrete semiconductor components in order to work in wide operating temperature ranges.
Calex has verified full operation at low temperatures.
This ensures that the user won’t have system issues at low temperature
2. soft start:
An inrush current and overshoot voltage appears
in the startup period of the DC-DC converter,
which may causes damage to the whole system and the load.
Thus, a so called soft-start function is adopted during the
startup stage of the DC-DC converter, which smoothly
conducts the output voltage and current in the inductor to the
steady state. |
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