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DCS Datasheet(PDF) 15 Page - Delta Electronics, Inc. |
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DCS Datasheet(HTML) 15 Page - Delta Electronics, Inc. |
15 / 20 page ![]() DS_DCS12S0A0S06NFA_11142013 15 THERMAL CONSIDERATIONS Thermal management is an important part of the system design. To ensure proper, reliable operation, sufficient cooling of the power module is needed over the entire temperature range of the module. Convection cooling is usually the dominant mode of heat transfer. Hence, the choice of equipment to characterize the thermal performance of the power module is a wind tunnel. Thermal Testing Setup Delta’s DC/DC power modules are characterized in heated vertical wind tunnels that simulate the thermal environments encountered in most electronics equipment. This type of equipment commonly uses vertically mounted circuit cards in cabinet racks in which the power modules are mounted. The following figure shows the wind tunnel characterization setup. The power module is mounted on a test PWB and is vertically positioned within the wind tunnel. AIR FLOW MODULE PWB AIR VELOCITY AND AMBIENT TEMPERATURE SURED BELOW THE MODULE FANCING PWB Note: Wind Tunnel Test Setup Figure Dimensions are in millimeters and (Inches) Figure 40: Wind tunnel test setup Thermal Derating Heat can be removed by increasing airflow over the module. To enhance system reliability, the power module should always be operated below the maximum operating temperature. If the temperature exceeds the maximum module temperature, reliability of the unit may be affected. THERMAL CURVES Figure 41: Temperature measurement location The allowed maximum hot spot temperature is defined at 120 ℃ 0 1 2 3 4 5 6 55 60 65 70 75 80 85 90 95 100 105 Output Current(A) Ambient Temperature (℃) DCS12S0A0S06 Output Current vs. Ambient Temperature and Air Velocity @Vin=12V Vout=5.0V (Either Orientation) Natural Convection 100LFM 200LFM 300LFM 400LFM 500LFM 600LFM Figure 42: Output current vs. ambient temperature and air velocity@Vin=12V, Vout=5.0V(Either Orientation) 0 1 2 3 4 5 6 55 60 65 70 75 80 85 90 95 100 105 Output Current(A) Ambient Temperature (℃) DCS12S0A0S06 Output Current vs. Ambient Temperature and Air Velocity @Vin = 12V Vout=3.3V(Either Orientation) 100LFM 200LFM 300LFM 400LFM 500LFM 600LFM Natural Convection Figure 43: Output current vs. ambient temperature and air velocity@Vin=12V, Vout=3.3V(Either Orientation) |
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