Product # PQ24018QGx25

Phone 1-888-567-9596

www.synqor.com

Doc.# 005-2QG218D Rev. B

04/09/13

Page 7

Input:

Output:

Current:

Package:

18 - 36V

1.8V

25A

Quarter-brick

0

5

10

15

20

25

0

25

40

55

70

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 temperature

for airflow rates of 0 LFM through 400 LFM with air flowing lengthwise from

output to input (nominal input voltage).

Figure 8: Thermal plot of converter at 25 amp load current with 55°C air

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

to input (nominal input voltage).

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

Ch 1: Vout (500mV/div) Ch 2: ON/OFF input (5V/div)

Figure 10: Turn-on transient at zero load (2 ms/div). Ch 1: Vout (500mV/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 mΩ ESR tantalum cap

and 1µF ceramic cap. Ch 1: Vout (100mV/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 mΩ ESR tantalum cap

and 1µF ceramic cap. Ch 1: Vout (100mV/div), Ch 2: Iout (10A/div).

Technical Figures