Product # PQ40120QGx08

Phone 1-888-567-9596

www.synqor.com

Doc.# 005-2QG128D Rev. C

11/13/12

Page 7

Input:

Output:

Current:

Package:

18-75V

12V

8.33A

Quarter-brick

2

3

4

5

6

7

8

9

0

25

40

55

70

85

Ambient Air Temperature (°C)

400 LFM (2.0 m/s)

300 LFM (1.5 m/s)

200 LFM (1.0 m/s)

100 LFM (0.5 m/s)

2

3

4

5

6

7

8

9

0

25

40

55

70

85

Ambient Air Temperature (°C)

400 LFM (2.0 m/s)

300 LFM (1.5 m/s)

200 LFM (1.0 m/s)

100 LFM (0.5 m/s)

2

3

4

5

6

7

8

9

0

25

40

55

70

85

Ambient Air Temperature (°C)

400 LFM (2.0 m/s)

300 LFM (1.5 m/s)

200 LFM (1.0 m/s)

100 LFM (0.5 m/s)

Figure 7: Maximum output power derating curves vs. ambient air temperature

for airflow rates of 100 LFM through 400 LFM with air flowing from pin 3 to pin

1 (48V input).

Figure 8: Thermal plot of converter at 8.1 amp load current with 55°C air

flowing at the rate of 200 LFM. Air is flowing across the converter sideways from

pin 3 to pin 1 (48V input).

Figure 9: Maximum output power-derating curves vs. ambient air temperature

for airflow rates of 100 LFM through 400 LFM with air flowing from input to

output (24V input).

Figure 10: Thermal plot of converter at 8.33 amp load current with 85°C air

flowing at the rate of 200 LFM. Air is flowing across the converter from input to

output (24V input).

Figure 11: Maximum output power-derating curves vs. ambient air temperature

for airflow rates of 100 LFM through 400 LFM with air flowing from input to

output (48V input).

Figure 12: Thermal plot of converter at 8.1 amp load current with 85°C air

flowing at the rate of 200 LFM. Air is flowing across the converter from input to

output (48V input).

Technical Figures