Product # DQ62412QKA02

Phone 1-888-567-9596

Doc.# 005-2DQ245L Rev. A

06/08/05

Page 7

pin 1. 75% load (12A) on 1.225V output and 25% load (2A) on 2.45V output. At derating

points, 1.225V output decreases while 2.45V output remains unchanged

.

Figure 18: Thermal plot of converter at 12 amp load on 1.225V output

flow across the converter is from pin 3 to pin 1 (nominal input voltage).

T

pecification

Input:

Input:

Outputs:

Outputs:

Current:

Current:

ackage:

35-75V

35-75V

2.45V & 1.225V

2.45V & 1.225V

20W

20W

Quarter-brick

Quarter-brick

0

1

2

3

4

5

6

7

8

9

0

2540557085

Ambient Air Temperature (ºC)

400 LFM (2.0 m/s)

300 LFM (1.5 m/s)

200 LFM (1.0 m/s)

100 LFM (1.0 m/s)

Figure 13: Maximum output power-derating curves vs. ambient air tem-

perature for airflow rates of 100 to 400 LFM, air flowing from pin 3 to

pin 1. Full load (8A) on 2.45V output and no load on 1.225V output.

Figure 14: Thermal plot of converter at 8 amp load on 2.45V output and

across the converter is from pin 3 to pin 1 (nominal input voltage)

pin 3 to pin 1. 50% load (8A) on 1.225V output and 50% load (4A) on 2.45V

output. At derating points, 1.225V output decreases while 2.45V output remains

unchanged.

0

1

2

3

4

5

6

7

8

9

0

2540557085

Ambient Air Temperature (ºC)

400 LFM (2.0 m/s)

300 LFM (1.5 m/s)

200 LFM (1.0 m/s)

100 LFM (1.0 m/s)

Figure 16: Thermal plot of converter at 8 amp load on 1.225V output

flow across the converter is from pin 3 to pin 1 (nominal input voltage)

0

1

2

3

4

5

6

7

8

9

10

11

12

13

0

2540

557085

Ambient Air Temperature (ºC)

400 LFM (2.0 m/s)

300 LFM (1.5 m/s)

200 LFM (1.0 m/s)

100 LFM (1.0 m/s)

Semiconductor junction temperature is

within 1

°C of surface temperature

Semiconductor junction temperature is

within 1

°C of surface temperature

Semiconductor junction temperature is

within 1

°C of surface temperature