PQ50120HZB55 Datasheet, PDF (6/14 Pages) SynQor Worldwide Headquarters – Delivers up to 55A of output current (660W)

Technical Specification
Input:44-52V
Output:12V
Current:55A
Part No.:PQ50120HZB55
100
95
90
85
80
75
70
65
60
0
44 Vin
48 Vin
52 Vin
5 10 15 20 25 30 35 40 45 50 55
Load Current (A)
Figure 1: Efficiency at nominal output voltage vs. load current for minimum,
nominal, and maximum input voltage at 25°C.
60
50
40
30
20
10
0
0
44 Vin
48 Vin
52 Vin
5
10 15 20 25 30 35 40 45 50 55
Load Current (A)
Figure 2: Power dissipation at nominal output voltage vs. load current for
minimum, nominal, and maximum input voltage at 25°C.
50
45
40
35
30
25
20
400 LFM
15
300 LFM
10
200 LFM
5
100 LFM
50 LFM
0
25
40
55
70
85
Ambient Temperature (C)
Figure 3: Maximum output power-derating curve vs. ambient air temperature
for airflow rates of 100LFM through 400LFM with air flowing from pin 4 to pin
1 (nominal input voltage).
Semiconductor junction temperature is
within 1°C of surface temperature
Figure 4: Thermal plot of converter at 36A load current (432W) with 55°C air
flowing at the rate of 200LFM. Air is flowing across the converter from pin 4 to
pin 1 (nominal input voltage).
Figure 5: Turn-on transient at full load (resistive load) (10 ms/div).
Ch 1: Vout (5 V/div)
Ch 2: ON/OFF input (5 V/div)
Figure 6: Turn-on transient at zero load (10 ms/div).
Ch 1: Vout (5 V/div)
Ch 2: ON/OFF input (5 V/div)
Product # PQ50120HZx55
Phone [phone]
www.synqor.com
Doc.# 005-0005483 Rev. 1
03/31/10
Page 6