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GDQ54S12B-4A DC-DC Converter
Technical Manual
Figure A-3 Thermal test point
Power Dissipation
The converter power dissipation is calculated based on efficiency. The following
formula reflects the relationship between the consumed power (P
and output power (P
MSL Rating
Store and transport the converter as required by the moisture sensitivity level
(MSL) rating 1 specified in the IPC J-STD-020D/033. The surface of a soldered
converter must be clean and dry. Otherwise, the assembly, test, or even reliability
of the converters will be negatively affected.
Mechanical Consideration
Installation
Although the converter can be mounted in any direction, free airflow must be
available.
Soldering
The converter supports standard wave soldering and hand soldering.
1.
2.
The converter can be rinsed using the isopropyl alcohol (IPA) solvent or other
suitable solvents.
Issue 02 (2021-09-03)
): P
o
For wave soldering, the converter pins can be soldered at 260°C for less than
7 seconds.
For hand soldering, the iron temperature should be maintained at 350°C to
420°C and applied to the converter pins for less than 10 seconds.
Copyright © Huawei Technologies Co., Ltd.
= P
(1 – ŋ)/ŋ.
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o
A EMC Specifications
), efficiency (ŋ),
d
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