0

10

20

30

40

50

60

0

2540

5570

85

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).

Product # PQ48015HTA60

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Doc.# 005-2HT451F Rev. M

11/20/02

Page 6

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

from input to output (nominal input voltage).

Figure 9: Turn-on transient at full load (resistive load) (10 ms/div).

Top Trace: Vout (0.5V/div)

Bottom Trace: ON/OFF input (5V/div)

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

Top Trace: Vout (0.5V/div)

Bottom Trace: ON/OFF input (5V/div)

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

1µF ceramic capacitor. Top trace: Vout (100mV/div), Bottom trace: Iout (20A/div).

of Iout(max): dI/dt = 5A/µs). Load cap: 480µF, 15 m

1µF ceramic capacitor. Top trace: Vout (200mV/div), Bottom trace: Iout (20A/div).

Half

Half

Brick

Brick

Performance Curves

48Vin 1.5Vout 60A