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GAQ37S12B-4
DC-DC Converter Technical Manual V1.0
EMC
Figure 20 shows the EMC test set-up diagram. The acceptance standard is required as the conducted
emission limits of CISPR22 Class A with 6 dB margin.
RV1,RV2: Varistor, 100 V, 4500 A
D2: Gas discharge tube, 90 V, 10 kA
CI1: Aluminum electrolytic capacitor, 450 µF
CO1: Non-solid radial lead aluminum electrolytic capacitor, 2 x 470 µF
CX1,CX2,CX3: Metalized film capacitor, 1uF, 275 V
CY1,CY2: Metalized film capacitor, 0.1uF, 275 V
CY3,CY4: Chip multilayer ceramic capacitor, 1000 V, 22 ηF
R1, R2: Chip thick film resistor, 1 W, 1Ω
T1: Common mode inductor, single phase, 400 µH
Qualification Testing
Parameter
High Accelerated Life
Test (HALT)
Temperature Humidity
Bias (THB)
High Temperature
Operation Bias (HTOB)
Power and Temperature
Cycling Test (PTC)
GLOBAL ENERGY EFFICIENCY SPECIALIST
Figure 20: EMC test set-up diagram
Units
Condition
Low temperature limit : -60°C (-76°F); high temperature limit: 110°C
3
(230°F); vibration limit: 40 G
Maximum input voltage; 85°C (185°F); 85% RH; 1000 operating
8
hours under lowest load power
Rating input voltage; air flow:0.5 m/s (100 FLM) to 5 m/s (1000 FLM);
8
ambient temperature between +45°C (+113°F) and +55°C (+131°F);
1000 operating hours; 50% to 80% load
Rating input voltage; air flow:0.5 m/s (100 FLM) to 5 m/s (1000 FLM);
ambient temperature between -40°C (-40°F) and +85°C (+185°F);
8
1000 operating hours ; 50% load; temperature slope: 15°C (59°F) per
minute; dwell time: 22 minutes
10
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