NQB-D datasheet(13/36 Pages) CUI

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date 11/07/2014

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CUI Inc

│ SERIES: NQB-D │ DESCRIPTION: FULLY REGULATED ADVANCED BUS CONVERTERS

Typical Characteristics

12.0 V, 39 A / 468 W

Output Current Derating – Open frame

020406080100 [°C]

[A]

3.0 m/s

2.0 m/s

1.5 m/s

1.0 m/s

0.5 m/s

Nat. Conv.

Available load current vs. ambient air temperature and airflow at

VI = 53 V. See Thermal Consideration section.

Output Current Derating – Base plate

Thermal Resistance – Base plate

020406080100 [°C]

[A]

3.0 m/s

2.0 m/s

1.5 m/s

1.0 m/s

0.5 m/s

Nat. Conv.

0.00.5

1.01.5

2.02.5

3.0[m/s]

[°C/W]

Available load current vs. ambient air temperature and airflow at

VI = 53 V. See Thermal Consideration section.

Thermal resistance vs. airspeed measured at the converter. Tested

in wind tunnel with airflow and test conditions as per the Thermal

consideration section. VI = 53 V.

Output Current Derating – Base Plate + Heat sink

Output Current Derating – Cold wall sealed box

020406080100 [°C]

[A]

3.0 m/s

2.0 m/s

1.5 m/s

1.0 m/s

0.5 m/s

Nat. Conv.

020406080100 [°C]

Tamb

85°C

Available load current vs. ambient air temperature and airflow at

VI = 53 V. See Thermal Consideration section. Tested with Plate Fin

Transverse heatsink, height 0.23 In, P0114 Thermal Pad.

Available load current vs. base plate temperature at 85ºC ambient.

VI = 53 V. See Thermal Consideration section.

For more information, please visit the product page.

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