Product # PQ60018ETL45

Phone 1-888-567-9596

www.synqor.com

Doc.# 005-2ET618F Rev. B

06/01/09

Page 7

Input:

Output:

Current:

Package:

35-75 V

1.8 V

45 A

Eighth-brick

Technical Specification

Figure 9: Turn-on transient at full load (resistive load) (5 ms/div). Load

Input voltage pre-applied. Ch 1: Vout (500 mV/div), Ch 2: ON/OFF input

(5 V/div).

Figure 10: Turn-on transient at zero load (5 ms/div). Load cap: 10 uF,

Vout (500 mV/div), Ch 2: ON/OFF input (5 V/div).

0

10

20

30

40

50

25

40

55

70

85

Ambient Air Temperature (ºC)

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 tem-

perature for airflow rates of 100 LFM through 400 LFM with air flowing

across the converter from pin input to output (nominal input voltage).

Figure 8: Thermal plot of an open frame converter at 35.6 amp load cur-

across the converter from input to output (nominal input voltage).

75%-50% of Iout(max); dI/dt = 0.1A/µs). Load cap: 10µF, 100 m

W ESR tanta-

lum cap and 1µF ceramic cap. Ch 1: Vout (100mV/div), Ch 2: Iout (20A/div).

75%-50% of Iout(max): dI/dt = 1A/µs). Load cap: 470µF, 30 m

W ESR tanta-

lum cap and 1µF ceramic cap. Ch 1: Vout (200mV/div), Ch 2: Iout (20A/div).