IQ48-HPC Datasheet, PDF (21/28 Pages) SynQor Worldwide Headquarters – Half-brick DC-DC Converter

Technical Specification
100
95
90
85
80
75
70
34 Vin
48 Vin
65
75 Vin
60
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5
Load Current (A)
Figure 1: Efficiency at nominal output voltage vs. load current for
minimum, nominal, and maximum input voltage at 25°C.
7.0
6.3
5.6
4.9
4.2
3.5
2.8
2.1
400 LFM (2.0 m/s)
1.4
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
0.7
100 LFM (0.5 m/s)
0.0
25
40
55
70
85
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).
Input: 34 - 75 V
Output: 40 V
Current: 6.3 A
Part No.: IQ48400HPC6D
35
30
25
20
15
10
34 Vin
5
48 Vin
75 Vin
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5
Load Current (A)
Figure 2: Power dissipation at nominal output voltage vs. load current
for minimum, nominal, and maximum input voltage at 25°C.
7.0
6.3
5.6
4.9
4.2
3.5
2.8
2.1
400 LFM (2.0 m/s)
1.4
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
0.7
100 LFM (0.5 m/s)
0.0
25
40
55
70
85
Ambient Air Temperature (°C)
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: 1 µF ceramic capacitor. Ch 1: Vout
(2 V/div), Ch 2: Iout (2 A/div).
Figure 6: Output voltage response to step-change in input voltage
(1000 V/ms). Load cap: 100 µF, electrolytic output capacitance.
Ch 1: Vout (2 V/div), Ch 2: Vin (50 V/div).
Product # IQ48xxxHPCxx
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www.synqor.com
Doc.# 005-005062 Rev. A
09/25/08
Page 21