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GDQ54S12B-4A DC-DC Converter
Technical Manual
Figure A-1 EMC test set-up diagram
RV1, RV2: Varistor, 100 V, 4500 A
CI1: Aluminum electrolytic capacitor, 100 V,
420 μF and ceramic capacitor, 7 x 4.7 µF,
100 V
CX1, CX2, CX3: Metalized film capacitor, 1 µF,
275 V
CY3, CY4: Chip multilayer ceramic capacitor,
22 nF, 1000 V
T1: Common mode inductor, single phase,
400 µH
Table A-1 EMC specifications
Parameter
Conducted emission (CE)
Surges
DC voltage dips, short
interruption, variation
Issue 02 (2021-09-03)
A
Conditions
DC Input
DM 1 kV/CM 2 kV
40%/70%/0%
80%/120%
Copyright © Huawei Technologies Co., Ltd.
EMC Specifications
D2: Gas discharge tube, 90 V, 10 kA
CO1: Non-solid radial lead aluminum
electrolytic capacitor, 2 x 470 µF
CY1, CY2: Metalized film capacitor, 0.1 µF,
275 V
R1, R2: Chip thick film resistor, 1 W, 1 Ω
Criterion
EN 55032, class A (6 dB)
IEC/EN 61000-4-5, criterion B
EN 61000-4-29, criterion B
EN 61000-4-29, criterion A
A EMC Specifications
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