PQ60120EML04 Datasheet, PDF (6/14 Pages) SynQor Worldwide Headquarters – Eighth-brick DC/DC Converter

Technical Specification
Input: 35-75 V
Output: 12 V
Current: 4 A
Package: Eighth-brick
4.5
4.0
3.5
3.0
2.5
2.0
1.5
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
1.0
200 LFM (1.0 m/s)
0.5
100 LFM (0.5 m/s)
50 LFM (0.25 m/s)
0.0
0
25
40
55
70
85
Ambient Air Temperature (^oC)
Figure 7: Maximum output power-derating curves vs. ambient air tem-
perature for airflow rates of 50 LFM through 400 LFM with air flowing
from input to output (nominal input voltage).
Semiconductor junction temperature is
within 1°C of surface temperature
Figure 8: Thermal plot of converter at 4.2 amp load current (50W) with
55°C air flowing at the rate of 200 LFM. Air is flowing across the con-
verter from input to output (nominal input voltage).
Figure 9: Turn-on transient at full load (resistive load) (10 ms/div).
Input voltage pre-applied. Ch 1: Vout (5V/div); Ch 2: ON/OFF input
(5V/div)
Figure 10: Turn-on transient at zero load (10 ms/div).
Ch 1: Vout (5V/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 capacitor
and 1µF ceramic capacitor. Ch 1: Vout (200mV/div), Ch 2: Iout (1A/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
capacitor and 1µF ceramic cap. Ch 1: Vout (200mV/div), Ch 2: Iout (1A/div).
Product # PQ60120EML04
Phone [phone]
www.synqor.com
Doc.# 005-2EM612E Rev. C
04/25/06
Page 6