Input:
35-75 V
Output:
12 V
Current:
4 A
Package:
Eighth-brick
Technical Specification
4.5
4.0
3.5
3.0
2.5
2.0
Semiconductor junction temperature is
within 1 C of surface temperature
°
1.5
1.0
0.5
0.0
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
50 LFM (0.25 m/s)
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).
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%
Figure 12: Output voltage response to step-change in load current (50%-75%-
of Iout(max); dI/dt = 0.1A/
µ
s). Load cap: 10
µ
F, 100 m
Ω
ESR tantalum capacitor
50% of Iout(max): dI/dt = 5A/
µs). Load cap: 470µF, 30 mΩ ESR tantalum
and 1 F ceramic capacitor. Ch 1: Vout (200mV/div), Ch 2: Iout (1A/div).
µ
capacitor and 1 F ceramic cap. Ch 1: Vout (200mV/div), Ch 2: Iout (1A/div).
µ
Product # PQ60120EML04
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2EM612E Rev. C
04/25/06
Page 6
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