SQ60120QPA28 データシートの表示（PDF） - SynQor Worldwide Headquarters

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SQ60120QPA28

Quarter-brick DC-DC Converter

SynQor Worldwide Headquarters 

Technical Specification

30

25

20

15

10

400

300

5

200

100

0

25

35

45

55

65

75

85

Ambient Air Temperature (oC)

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 output to input (nominal input voltage).

Input: 36-75 V

Output: 12 V

Current: 28 A

Package: Quarter-brick

Figure 8: Thermal plot of converter at 21.9 amp load current (262.8W)

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 half load (resistive load) and 3mF out-

put capacitance (2.0 ms/div). Input voltage pre-applied. Channel 1:

Vout (5V/div). Channel 2: ON/OFF input (2V/div).

Figure 10: Turn-on transient at zero load and 3mF output capaci-

tance (2.0ms/div). Input voltage pre-applied. Channel 1: Vout (5V/div).

Channel 2: ON/OFF input (2V/div).

See Fig. 14

10 µH

source

impedance

See Fig. 13

See Fig. 15

iS

VSOURCE

iC

47 µF,

<1W ESR

electrolytic

capacitor

DC-DC

Converter

VOUT

1 µF 15 µF,

ceramic 450mW ESR

capacitor tantalum

capacitor

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

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

tantalum cap. Top trace: Vout (2V/div), Bottom trace: Iout (10A/div).

Figure 12: Test set-up diagram showing measurement points for Input

Terminal Ripple Current (Figure 13), Input Reflected Ripple Current

(Figure 14) and Output Voltage Ripple (Figure 15).

Product # SQ60120QPA28

Phone 1-888-567-9596

www.synqor.com

Doc.# 005-2SQ612J Rev. B

06/17/09

Page 6

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