PQ60180HTA09 Datasheet, PDF (6/13 Pages) SynQor Worldwide Headquarters – Half-brick DC/DC Converter

Technical Specification
Input: 35-75 V
Output: 18 V
Current: 9.2 A (165W)
Package: Half-brick
10
9
8
7
6
5
4
3
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
2
200 LFM (1.0 m/s)
1
100 LFM (0.5 m/s)
0 LFM (0 m/s)
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 0 LFM through 400 LFM with air flowing
from output to input (nominal input voltage).
Figure 8: Thermal plot of converter at 7.8 amp load current (140W)
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) (10 ms/div).
Input voltage pre-applied. Top Trace: Vout (5V/div). Bottom Trace:
ON/OFF input (5V/div)
Figure 10: Turn-on transient at zero load (10 ms/div). Top Trace: Vout
(5V/div). Bottom Trace: 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: 15µF, 450 mΩ ESR tantalum cap
and 1µF ceramic cap. Top trace: Vout (500mV/div), Bottom trace: Iout (5A/div).
Figure 12: Output voltage response to step-change in load current (50%-75%-
50% of Iout(max): dI/dt = 5A/µs). Load cap: 480µF, 15 mΩ ESR tantalum cap
and 1µF ceramic cap. Top trace: Vout (500mV/div), Bottom trace: Iout (5A/div).
Product # PQ60180HTA09
Phone [phone]
www.synqor.com
Doc.# 005-2HT681F Rev. B
11/2/04
Page 6