Product # PQ60050QTA30

Phone 1-888-567-9596

www.synqor.com

Doc.# 005-2QT650C Rev. E

05/20/09

Page 6

Technical Specification

Input:

Output:

Current:

Package:

35-75 V

5.0 V

30 A

Quarter-brick

0

5

10

15

20

25

30

0

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)

50 LFM (0.25 m/s)

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

temperature for airflow rates of 50 LFM through 400 LFM with air flowing

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

Figure 8: Thermal plot of converter at 26.5 amp load current (133W)

with 55°C 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 rated load (resistive load) (2 ms/div) Input

voltage pre-applied. Ch 1: Vout (2V/div). Ch 2: ON/OFF input (5V/div)

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

Ch 1: Vout (2V/div)

Ch 2: ON/OFF input (5V/div)

Figure 11: Output voltage response to step-change in load current (50%-75%-

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

W ESR tantalum

cap and 1µF ceramic capacitor. Ch 1: Vout (500mV/div), Ch 2: Iout (10A/div).

Figure 12: Output voltage response to step-change in load current (50%-75%-

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

W ESR tantalum

capacitor and 1µF ceramic cap. Ch 1: Vout (500mV/div), Ch 2: Iout (10A/div).

Semiconductor junction temperature

is within 1°C of surface temperature