PQ60150EKXXX Datasheet, PDF (8/15 Pages) SynQor Worldwide Headquarters – Thermal shutdown protects converter from abnormal environmental conditions

Technical Specification
4
3
2
400 LFM (2.0 m/s)
1
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
0
25
40
55
70
85
Ambient Air Temperature (ºC)
Figure 7: Maximum output power derating curves vs. ambient air temperature
for airflow rates of 100LFM through 400LFM with air flowing across the
converter from input to output (nominal input voltage).
Input: 35-75V
Output: 15V
Current: 3.3A
Part No.: PQ60150EKx03
Semiconductor junction temperature is
within 1°C of surface temperature
Figure 8: Thermal plot of converter 3.3A load current (50W) with 55°C air
flowing at the rate of 200LFM. Air is flowing across the converter from input to
output (nominal input voltage).
Figure 9: Turn-on transient at full load (resistive load) (10ms/div). Load cap:
15µF tantalum capacitor and 1uF ceramic cap. Input voltage pre-applied. Ch 1:
Vout (5V/div). Ch 2: ON/OFF input (5V/div).
Figure 10: Turn-on transient at zero load (10ms/div). Load cap: 15µF
tantalum capacitor and 1uF ceramic cap. 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: 15µF tantalum cap and 1µF
ceramic cap. Ch 1: Vout (500mV/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=1A/µs). Load cap: 470µF electrolytic, 15µF tantalum
and 1µF ceramic cap. Ch 1: Vout (200mV/div), Ch 2: Iout (1A/div).
Product # PQ60150EKx03
Phone [phone]
www.synqor.com
Doc.# 005-0005265 Rev. A
08/20/09
Page 8