Input:9-36V
Output:1.2V
Current:20A
Part No.:IQ18012SKx20
Technical Specification
100
95
90
85
80
75
70
65
60
14
12
10
8
6
4
9 Vin
9 Vin
18 Vin
36 Vin
2
18 Vin
36 Vin
0
0
5
10
15
20
0
5
10
15
20
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.
25
20
15
25
20
15
10
10
400 LFM (2.0 m/s)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
300 LFM (1.5 m/s)
5
5
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
0
0
25
40
55
70
85
25
40
55
70
85
Ambient Air Temperature (°C)
Ambient Air Temperature (°C)
Figure 3: Encased converter max. output power derating vs. ambient air
Figure 4: Encased converter (with 1/4” heatsink) max. output power derating
temperature for airflow rates of 100 LFM through 400 LFM. Air flows across the
converter from pin 3 to pin 1 (nominal input voltage).
vs. ambient air temperature for airflow rates of 100 LFM through 400 LFM. Air
flows across the converter from pin 3 to pin 1 (nominal input voltage).
Figure 5: Output voltage response in the SM version to step-change in load
current (50%-75%-50% of Iout(max); dI/dt = 0.1 A/µs). Load cap: 100 µF
electrolytic cap and 1 µF ceramic cap. Ch 1: Vout (100 mV/div), Ch 2: Iout (10
A/div).
Figure 6: Output voltage response in the SM version to step-change in input
voltage (250 V/ms). Load cap: 100 µF, electrolytic output capacitance. Ch 1:
Vout (100 mV/div), Ch 2: Vin (20 V/div).
Product # IQ18xxxSKxxx
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005462 Rev. C
05/27/10
Page 5
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