Product # PQ60050QML15

Phone 1-888-567-9596

Doc.# 005-2QM650E Rev. A

9/16/02

Page 6

Performance Curves

48Vin 5.0Vout 15A

Quarter

Quarter

Brick

Brick

0

2

4

6

8

10

12

14

16

0

25

4055

7085

400 LFM (2.0 m/s)

300 LFM (1.5 m/s)

200 LFM (1.0 m/s)

100 LFM (0.5 m/s)

0 LFM (0 m/s)

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

perature for airflow rates of 0 LFM through 400 LFM with air flowing

from input to output (nominal input voltage).

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

lengthwise from input to output.(nominal input voltage).

Figure 9: Turn-on transient at full load (resistive load) (2 ms/div)

Ch1: Vout (2V/div)

Ch2: ON/OFF input (5V/div)

Figure 10: Turn-on transient at zero load (2 ms/div).

Ch1: Vout (2V/div)

Ch2: ON/OFF input (5V/div)

of Iout(max); dI/dt = 0.1A/µs). Load cap: 15µF, 450 m

and 1µF ceramic capacitor. Ch1: Vout (200mV/div), Ch2: Iout (5A/div).

50% of Iout(max): dI/dt = 5A/µs). Load cap: 470µF, 30 m

capacitor and 1µF ceramic cap. Ch1: Vout (200mV/div), Ch2: Iout (5A/div).

Semiconductor junction temperature is

within 1

°C of surface temperature