Product # SQ60120ETA20

Phone 1-888-567-9596

www.synqor.com

Doc.# 005-0005817 Rev. G

12/04/2015

Page 7

Technical Specification

Derating Curves for Vin =48 V;

orientation: output to input

0

5

10

15

20

25

30

25

40

55

70

85

400

300

200

100

source

impedance

DC-DC

Converter

Input

Terminal

Ripple

Current

Input

Reflected

Ripple

Current

Output

Voltage

Ripple

ceramic

capacitor capacitor

electrolytic

electrolytic

capacitor

i

S

i

C

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

for airflow rates of 100 LFM through 400 LFM with air flowing from output to

input (nominal input voltage).

Figure 8: Thermal plot of converter at 13.5 A load current (max 125ºC derating

current) with 55ºC 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 3 mF output

capacitance (2.0 ms/div). Input voltage pre-applied. CH1: Vout (5V/div). CH2:

ON/OFF input (2V/div). Vin = 48 V.

Figure 10: Turn-on transient at zero load and 3 mF output capacitance (2.0 ms/

div). Input voltage pre-applied. CH1: Vout (5 V/div). CH2: ON/OFF input (2

V/div). Vin = 48 V.

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

50%) of Iout (max); dI/dt = 0.1 A/µs). Load cap 100 µF, 100 mΩ ESR tantalum

cap. Top trace: Vout (2 V/div), Ch2: Iout (10A/div). Vin = 48 V

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).