Technical Specification
Input:
Output:
Current:
Part no.:
18-75 V
24 V
5.0 A
IQ36400QTC05
IQ36240QTC05 eleCTRICAl ChARACTeRISTICS (24 V
OUT
)
T
A
= 25 °C, airflow rate = 300 LFM, V
IN
= 36 V
DC
unless otherwise noted; full operating temperature range is -40 °C to +100 °C
ambient temperature with appropriate power derating. Specifications subject to change without notice.
InPUT ChARACTeRISTICS
Maximum Input Current
No-Load Input Current
Disabled Input Current
Response to Input Transient
Input Terminal Ripple Current
Recommended Input Fuse
Input Filter Component Values (L\C)
OUTPUT ChARACTeRISTICS
Output Voltage Set Point
Output Voltage Regulation
Over Line
Over Load
Over Temperature
Total Output Voltage Range
Output Voltage Ripple and Noise
1
Peak-to-Peak
RMS
Operating Output Current Range
Output DC Current-Limit Inception
Output DC Current-Limit Shutdown Voltage
Back-Drive Current Limit while Enabled
Back-Drive Current Limit while Disabled
Maximum Output Capacitance
Output Voltage during Load Current Transient
For a Step Change in Output Current (0.07 A/µs)
Settling Time
Output Voltage Trim Range
Output Voltage Remote Sense Range
Output Over-Voltage Protection
Load Current Scale Factor
eFFICIenCy
100% Load
50% Load
Parameter
Min.
23.76
-360
23.4
0
5.5
0
-20
117
Typ.
80
2.0
0.8
350
1.0\6.6
24.00
+0.1
+0.1
50
10
6.0
11.5
0.12
16
900
50
122
57
91
92
Max.
9.7
100
4.0
20
24.24
+0.3
+0.3
360
24.6
80
20
5.0
6.5
50
400
+10
+10
127
Units notes & Conditions
A
mA
mA
V
mA
A
µH\µF
V
%
%
mV
V
mV
mV
A
A
V
A
mA
µF
mV
µs
%
%
%
%
%
18 V
IN
; trim up; in current limit
1000 V/ms input transient; 100 µF output cap.
RMS
Fast acting external fuse recommended
Internal values; see Figure E
Over sample, line, load, temperature & life
20 MHz bandwidth
Full Load
Full Load
Subject to thermal derating
Output Voltage 10% Low
Negative current drawn from output
Negative current drawn from output
Vout nominal at full load (resistive load)
50% to 75% to 50% I
OUT
max
To within 1% V
OUT
nom
Measured across Pins 8 & 4; Common Figure 3
Measured across Pins 8 & 4
Over full temp range; % of nominal V
OUT
See Output Load Current app. note on our web
See Figure 1 for efficiency curve
See Figure 1 for efficiency curve
note 1: Output is terminated with 1 µF ceramic.
For applications requiring reduced output voltage ripple and noise, consult SynQor applications support (e-mail: support@synqor.com)
Product # IQ36xxxQTCxx
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-IQ36QTX Rev. A
06/06/08
Page 18
Technical Specification
100
95
16
14
Input:
Output:
Current:
Part no.:
18-75 V
24 V
5.0 A
IQ36400QTC05
85
80
75
70
65
60
0
1
2
3
4
5
18 Vin
36 Vin
75 Vin
Power Dissipation (W)
90
12
10
8
6
4
2
0
0
1
2
3
4
5
18 Vin
36 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.
6
6
5
5
4
4
Iout (A)
3
Iout (A)
400 LFM (2.0 m/s)
3
2
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
0
0
25
40
55
70
85
2
400 LFM (2.0 m/s)
1
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
0
0
25
40
55
70
85
1
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 pin 3 to pin 1 (nominal input voltage).
Figure 4:
Encased converter (with 1/4” heatsink) max. output power derating 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 to step-change in load current (50%-75%-50%
of Iout(max); dI/dt = 0.08 A/µs). Load cap:
1
µF ceramic capacitor. Ch 1: Vout
(
2
V/div), Ch 2: Iout (1 A/div).
Product # IQ36xxxQTCxx
Phone 1-888-567-9596
www.synqor.com
Figure 6:
Output voltage response to step-change in input voltage
(250 V/ms).
Load cap: 100 µF, electrolytic output capacitance.
Ch 1: Vout (1 V/div), Ch 2: Vin (20 V/div).
Doc.# 005-IQ36QTX Rev. A
06/06/08
Page 19
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