Technical
Specification
18-36V
50V
5.0-50V
Outputs
IQ24xxxHZXxx
Half-brick
DC-DC Converter
504W
Max Power
2250V dc
Isolation
Continuous Input Transient Input
N
60
ZC
0H
05
24
IQ
R
Operational Features
•
•
•
•
•
High efficiency, 94% at full rated load current
Operating input voltage range: 18-36V
Fixed frequency switching provides predictable EMI
No minimum load requirement
Optional: Active current share for parallel applications
Mechanical Features
• Industry standard half-brick pin-out configuration
• Size: 2.390" x 2.490" x 0.512", 60.6 x 63.1 x 13.0 mm
• Total weight: 5oz (142g)
• Flanged baseplate version available
•
•
•
•
•
Protection Features
Input under-voltage lockout
Output current limit and short circuit protection
Active back bias limit
Auto-recovery output over-voltage protection
Thermal shutdown
Control Features
• On/Off control referenced to input side
• Remote sense for the output voltage
• Wide output voltage trim range of at least -50%, +10%
CONTENTS
Family Electrical Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Electrical Characteristics (28 Vout) & Figures . . . . . . . . . . . . . . . . . . . . 4
Electrical Characteristics (50 Vout) & Figures . . . . . . . . . . . . . . . . . . . . 6
Application Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Standards & Qualification Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Encased Mechanical Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Full Feature Mechanical Drawing. . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Flanged Mechanical Drawing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
18
-3
6V
IN
5V
O
U
T
@
60
A
A
-G
The InQor Half-brick converter series is composed of next-
generation, board-mountable, fixed switching frequency
dc-dc converters that use synchronous rectification to
achieve extremely high power conversion efficiency.
Each module is supplied completely encased to provide
protection from the harsh environments seen in many
industrial and transportation applications.
Page No.
Safety Features
•
•
•
•
•
•
•
2250V, 30 MΩ input-to-output isolation
UL 60950-1:2003, basic insulation
CAN/CSA-C22.2 No. 60950-1:2003
EN60950-1:2001 Certified by TUV
CE Marked 2006/95/EC Low Voltage Directive
IEC 61000-4-2
RoHS compliant (see last page)
Product # IQ24xxxHZXxx
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005664 Rev. A
05/24/10
Page 1
Technical
Specification
IQ24 FAMILY ELECTRICAL CHARACTERISTICS (all output voltages)
IQ24xxxHZXxx
Ta = 25 °C, airflow rate = 300 LFM, Vin = 24V dc unless otherwise noted; full operating temperature range is -40 °C to +100 °C baseplate temperature
with appropriate power derating. Specifications subject to change without notice.
Parameter
Min.
Typ.
Max.
Units Notes & Conditions
V
V
V
V dc
V dc
V dc
°C
°C
V
V
V
V
V
V
µF
µH\µF
Continuous
Continuous
1 s transient, square wave
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Non-Operating
50
Operating
40
Operating Transient Protection
50
Isolation Voltage
Input to Output
2250
Input to Base-Plate
2250
Output to Base-Plate
2250
Operating Temperature
-40
100
Storage Temperature
-55
125
Voltage at ON/OFF input pin
-2
18
INPUT CHARACTERISTICS
Operating Input Voltage Range
18
24
36
Input Under-Voltage Lockout
Turn-On Voltage Threshold
16.5
17.0
17.5
Turn-Off Voltage Threshold
15.0
15.5
16.0
Lockout Voltage Hysteresis
1.0
1.5
2.0
Input Over-Voltage Shutdown
-
Recommended External Input Capacitance
470
Input Filter Component Values (L\C)
0.34\23
DYNAMIC CHARACTERISTICS
Turn-On Transient
Turn-On Time
24
35
40
Output Voltage Overshoot
5
Auto-recovery Startup Inhibit Time
500
ISOLATION CHARACTERISTICS
Isolation Voltage (dielectric strength)
Isolation Resistance
30
Isolation Capacitance (input to output)
1000
TEMPERATURE LIMITS FOR POWER DERATING CURVES
Semiconductor Junction Temperature
125
Board Temperature
125
Transformer Temperature
125
Maximum Baseplate Temperature, Tb
100
FEATURE CHARACTERISTICS
Switching Frequency
230
240
250
ON/OFF Control
Off-State Voltage
2.4
18
On-State Voltage
-2
0.8
ON/OFF Control
Pull-Up Voltage
5
Pull-Up Resistance
10
Over-Temperature Shutdown OTP Trip Point
125
Over-Temperature Shutdown Restart Hysteresis
10
RELIABILITY CHARACTERISTICS
Calculated MTBF (Telcordia) TR-NWT-000332
1.49
Calculated MTBF (MIL-217) MIL-HDBK-217F
1.31
Field Demonstrated MTBF
Note 1: Higher values of isolation capacitance can be added external to the module.
Product # IQ24xxxHZXxx
Phone 1-888-567-9596
www.synqor.com
Baseplate temperature
50V transient for 1 s
Not Available
Typical ESR 0.1-0.2 Ω
Internal values; see Figure C
ms
%
ms
Full load, Vout=90% nom.
Maximum Output Capacitance
See Application Section
See Absolute Maximum Ratings
MΩ
pF
°C
°C
°C
°C
kHz
V
See Note 1
Package rated to 150 °C
UL rated max operating temp 130 °C
Insolation stage switching freq. is half this
Application notes Figure A
V
kΩ
°C
°C
Average PCB Temperature
106 Hrs. Tb = 70°C
106 Hrs. Tb = 70°C
106 Hrs. See our website for details
Doc.# 005-0005664 Rev. A
05/24/10
Page 2
Technical
Specification
Family Figures (all output voltages)
120
IQ24xxxHZXxx
Nominal Vout
100
Typical Current Limit Inception Point
Output Voltage (%)
80
Typical Output Voltage at Shutdown
60
40
Vin min
20
Vin nom
Vin max
0
0
10
20
30
40
50
Load Current (%)
60
70
80
90
100 110 120 130 140 150
Common Figure 1: Typical startup waveform. Input voltage pre-applied, ON/
OFF Pin on Ch 2.
Common Figure 2: Output voltage vs. load current showing typical current limit
curves and converter shutdown points.
10,000.0
100,000.0
5.0 V
12 V
15 V
24 V
28 V
40 V
50 V
Trim Resistance (kOhms)
1,000.0
Trim Resistance (kOhms)
10,000.0
100.0
1,000.0
10.0
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15
Increase in Vout (%)
100.0
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15
Increase in Vout (%)
Common Figure 3: Trim graph for trim-up 5.0 to 15V outputs.
10,000.0
1,000.0
100.0
10.0
1.0
0.1
0.0
0
5
10
15
20
25
30
35
40
45
Decrease in Vout (%)
All voltages
Common Figure 4: Trim graph for trim-up 24 to 50V outputs.
Common Figure 5: Trim graph for trim down.
Product # IQ24xxxHZXxx
Trim Resistance (kOhms)
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005664 Rev. A
05/24/10
Page 3
Technical Specification
Input:18-36V
Output:28V
Current:18A
Part No.:IQ24280HZx18
IQ24280HZx18 ELECTRICAL CHARACTERISTICS (28.0 Vout)
Ta = 25 °C, airflow rate = 300 LFM, Vin = 24V dc unless otherwise noted; full operating temperature range is -40 °C to +100 °C baseplate temperature
with appropriate power derating. Specifications subject to change without notice.
Parameter
INPUT CHARACTERISTICS
Maximum Input Current
No-Load Input Current
Disabled Input Current
Response to Input Transient
Input Terminal Ripple Current
Recommended Input Fuse
OUTPUT CHARACTERISTICS
Output Voltage Set Point
Output Voltage Regulation
Over Line
Over Load
Over Temperature
Total Output Voltage Range
Output Voltage Ripple and Noise
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
Step Change in Output Current (0.1 - 5 A/µs)
Settling Time
Output Voltage Trim Range
Output Voltage Remote Sense Range
Output Over-Voltage Protection
EFFICIENCY
100% Load
Min.
Typ.
Max.
38.6
Units Notes & Conditions
A
mA
mA
V
mA
See Figure 6
RMS
Fast acting external fuse recommended
Vin min; trim up; in current limit
300
100
2.5
500
380
160
40
27.54
28
±0.25
±0.25
-700
27.160
150
40
0
19.5
4
0
21.0
11.2
5
3
6
4
5000
1.5
8
-50
35.0
36.4
93
20
10
37.8
700
28.840
300
80
18
22.5
28.39
A
V
See Note 3
%
%
mV
V
mV
mV
A
A
V
A
mA
µF
V
ms
%
%
V
%
Over sample, line, load, temperature & life
20 MHz bandwidth; see Note 1
Full load
Full load
Subject to thermal derating
Output voltage 10% Low
See Note 2
Negative current drawn from output
Negative current drawn from output
Vout nominal at full load (resistive load)
50% to 75% to 50% Iout max
To within 1% Vout nom
Across Pins 8&4; Common Figures 3-5;
Across Pins 8&4
Over full temp range
See Figure 1 for efficiency curve
50% Load
95
%
See Figure 1 for efficiency curve
Note 1: Output is terminated with 1 µF ceramic and 15 µF low-ESR tantalum capacitors. For applications requiring reduced output voltage ripple and
noise, consult SynQor applications support (e-mail: support@synqor.com)
Note 2: If the output voltage falls below the Output DC Current Limit Shutdown Voltage for more than 50ms, then the unit will enter into hiccup mode,
with a 500ms off-time
Note 3: Line and load regulation is limited by duty cycle quantization and does not indicate a shift in the internal voltage reference
Product # IQ24xxxHZXxx
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005664 Rev. A
05/24/10
Page 4
Technical Specification
100
95
90
60
55
50
Input:18-36V
Output:28V
Current:18A
Part No.:IQ24280HZx18
Power Dissipation (W)
45
40
35
30
25
20
15
10
5
0
18Vin
24Vin
36Vin
Efficiency (%)
85
80
75
70
65
60
0
3
6
18Vin
24Vin
36Vin
Load Current (A)
9
12
15
18
0
3
6
Load Current (A)
9
12
15
18
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.
18
18
15
15
12
12
Iout (A)
Iout (A)
9
9
6
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
6
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
3
3
0
25
40
0
Ambient Air Temperature (°C)
55
70
85
25
40
Ambient Air Temperature (°C)
55
70
85
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 = 0.1A/µs. Load cap: 100µF electrolytic cap and 1µF
ceramic cap. Ch 1: Vout, Ch 2: Iout (10 A/div).
Product # IQ24xxxHZXxx
Phone 1-888-567-9596
Figure 6: Output voltage response to step-change in input voltage (250 V/ms), at
Max. load current.Load cap: 100µF electrolytic cap and 1µF ceramic cap.Ch 1:
Vout, Ch 2: Vin.
Doc.# 005-0005664 Rev. A
05/24/10
Page 5
www.synqor.com
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