PQ60050HTA33 Datasheet, PDF (6/14 Pages) SynQor Worldwide Headquarters – Half-brick DC/DC Converter

Technical Specification
Input: 35-75 V
Output: 5.0 V
Current: 33 A
Package: Half-brick
30
25
20
15
400 LFM (2.0 m/s)
10
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
5
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 40 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) (10 ms/div).
Input voltage pre-applied. Top Trace: Vout (2V/div). Bottom Trace:
ON/OFF input (5V/div).
Figure 10: Turn-on transient at zero load (10 ms/div). Top Trace: Vout
(2V/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/µ s). Load cap: 15µ F, 450 mW ESR tantalum cap
and 1µ F ceramic cap. Top trace: Vout (200mV/div), Bottom trace: Iout (10A/div).
Figure 12: Output voltage response to step-change in load current (50%-75%-
50% of Iout(max): dI/dt = 5A/µ s). Load cap: 480µ F, 15 mW ESR tantalum cap
and 1µ F ceramic cap. Top trace: Vout (200mV/div), Bottom trace: Iout (10A/div).
Product # PQ60050HTA33
Phone [phone]
www.synqor.com
Doc.# 005-2HT650F Rev. A
8/16/07
Page 6