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GDQ54S12B-4A DC-DC Converter
Technical Manual
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Issue 02 (2021-09-03)
9
Input Undervoltage Protection
The converter will shut down after the input voltage drops below the
undervoltage protection threshold. The converter will start to work again after
the input voltage reaches the input undervoltage recovery threshold. For the
hysteresis, see
Table
Output Overvoltage Protection
When the output voltage exceeds the output overvoltage protection
threshold, the converter will enter hiccup mode. When the fault condition is
removed, the converter will automatically restart.
Output Overcurrent Protection
The converter equipped with current limiting circuitry can provide protection
from an output overload or short circuit condition. If the output current
exceeds the output overcurrent protection setpoint, the converter enters
hiccup mode. When the fault condition is removed, the converter will
automatically restart.
Overtemperature Protection
A temperature sensor on the converter senses the average temperature of the
converter. It protects the converter from being damaged at high temperatures.
When the temperature exceeds the overtemperature protection threshold, the
output will shut down. It will allow the converter to turn on again when the
temperature of the sensed location falls by the value of the overtemperature
protection hysteresis.
Copyright © Huawei Technologies Co., Ltd.
Protection Characteristics
4-5.
9 Protection Characteristics
25
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