Technical Specification
100
95
24
21
Input:
Output:
Current:
Part no.:
34 - 75 V
1.8 V
60 A
IQ48018HPC60
85
80
75
70
65
60
0
5
10
15
20
25
30
35
40
45
50
55
60
Power Dissipation (W)
34 Vin
48 Vin
75 Vin
90
18
15
12
9
6
3
0
0
5
10
15
20
25
30
35
40
45
50
55
60
34 Vin
48 Vin
75 Vin
Efficiency (%)
Load Current (A)
Load Current (A)
Figure 1:
Efficiency at nominal output voltage vs. load current for
minimum, nominal, and maximum input voltage at 25
°
C.
Figure 2:
Power dissipation at nominal output voltage vs. load current
for minimum, nominal, and maximum input voltage at 25
°
C.
70
60
50
70
60
50
Iout (A)
40
30
20
10
0
25
40
55
70
85
Iout (A)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
40
30
20
10
0
25
40
55
70
85
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
Ambient Air Temperature (°C)
Ambient Air Temperature (°C)
Figure 3:
Encased converter (without heatsink) max. output power derating vs.
ambient air temperature for airflow rates of 100 LFM through 400 LFM. Air flows
across the converter from input to output (nominal input voltage).
Figure 4:
Encased converter (with 1/2” heatsink) max. output power derating vs.
ambient air temperature for airflow rates of 100 LFM through 400 LFM. Air flows
across the converter from input to output (nominal input voltage).
Figure 5:
Output voltage response to step-change in load current (50%-75%-
50% of Iout(max); dI/dt = 0.1 A/µs). Load cap: 15 µF Tantalum
+ 1
µF Ceramic
capacitor. Ch 1: Vout (1
00 m
V/div), Ch 2: Iout (20 A/div).
Product # IQ48xxxHPCxx
Phone 1-888-567-9596
www.synqor.com
Figure 6:
Output voltage response to step-change in input voltage
(1000 V/ms).
Load cap: 100 µF, electrolytic output capacitance.
Ch 1: Vout (200 mV/div), Ch 2: Vin (50 V/div).
Doc.# 005-005062 Rev. A
09/25/08
Page 7
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