Technical
Specification
9-36V
40V
1.2-15V
Outputs
IQ18xxxSKxxx
Sixteenth-brick
DC-DC Converter
26W
Max Power
2250Vdc
Isolation
Continuous Input Transient Input
2N
C0
K
0S
15
18
IQ
Operational Features
•
•
•
•
•
High efficiency, 82% at full rated load current
Delivers full power with minimal derating - no heatsink required
Operating input voltage range: 9-36V with 40V for 100ms transient
Fixed frequency switching provides predictable EMI
No minimum load requirement
Mechanical Features
• Industry standard Sixteenth-brick pin-out configuration
• Size: 1.04" x 1.44" x 0.500" (26.3 x 36.5 x 12.7 mm)
• Total weight:1.14oz (32.3g)
•
•
•
•
•
Protection Features
Input under-voltage lockout
Output current limit and short circuit protection
Active back bias limit
Output over-voltage protection
Thermal shutdown
Control Features
• On/Off control referenced to input side
• Remote sense for the output voltage
• Output voltage trim range of -10%, +10%
CONTENTS
Family Electrical Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Electrical Characteristics (1.2 Vout) & Figures . . . . . . . . . . . . . . . . . . . 4
Electrical Characteristics (1.5 Vout) & Figures . . . . . . . . . . . . . . . . . . . 6
Electrical Characteristics (1.8 Vout) & Figures . . . . . . . . . . . . . . . . . . . 8
Electrical Characteristics (2.5 Vout) & Figures . . . . . . . . . . . . . . . . . . .10
Electrical Characteristics (3.3 Vout) & Figures . . . . . . . . . . . . . . . . . . .12
Electrical Characteristics (5 Vout) & Figures . . . . . . . . . . . . . . . . . . . . .14
Electrical Characteristics (7 Vout) & Figures . . . . . . . . . . . . . . . . . . . . .16
Electrical Characteristics (12 Vout) & Figures . . . . . . . . . . . . . . . . . . . .18
Electrical Characteristics (15 Vout) & Figures . . . . . . . . . . . . . . . . . . . .20
Application Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Standards & Qualification Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Encased Mechanical Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Full Feature Mechanical Drawing. . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Flanged Mechanical Drawing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
9-
36
V
IN
15
V
O
U
T
@
1.
7A
The InQor Sixteenth-brick converter series is
composed of next-generation, board-mountable,
isolated, 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.
R
S-
G
Page No.
Safety Features
•
•
•
•
•
2250V input-to-output isolation
UL 60950-1:2003 Basic Insulation
CAN/CSA-C22.2 No. 60950-1:2003
EN60950-1:2001
RoHS compliant (see last page)
Product # IQ18xxxSKxxx
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005462 Rev. C
05/27/10
Page 1
Technical
Specification
IQ18-SK Family Electrical Characteristics (all output voltages)
Ta = 25°C, airflow rate = 300 LFM, Vin = 18Vdc 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.
IQ18xxxSKxxx
Parameter
Min.
Typ.
Max.
Units Notes & Conditions
V
V
V
V dc
V dc
V dc
°C
°C
V
V
V
V
V
µF
µH\µF
Continuous
Continuous
100ms
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Non-Operating
50
Operating
36
Operating Transient Protection
40
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
8
INPUT CHARACTERISTICS
Operating Input Voltage Range
9
18
36
Input Under-Voltage Lockout
Turn-On Voltage Threshold
9.3
9.7
10.3
Turn-Off Voltage Threshold
7.9
8.4
8.9
Lockout Voltage Hysteresis
1.3
Recommended External Input Capacitance
100
Input Filter Component Values (L\C)
0.22\5
DYNAMIC CHARACTERISTICS
Turn-On Transient
Turn-On Time
35
Start-Up Inhibit Time
180
200
250
Output Voltage Overshoot
0
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
350
ON/OFF Control
Off-State Voltage
2.4
8
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
3.9
Calculated MTBF (MIL-217) MIL-HDBK-217F
3.5
Field Demonstrated MTBF
Note 1: Start-up guaranteed above 10.3V, but will operate down to 9V
Note 2: Higher values of isolation capacitance can be added external to the module.
Note 3: Maximum value is 400ms for DC current limit and short circuit fault conditions
Product # IQ18xxxSKxxx
Phone 1-888-567-9596
www.synqor.com
Baseplate temperature
See Note 1
Typical ESR 0.1-0.2Ω
Internal values; see Figure E
ms
ms
%
Full load, Vout=90% nom.
Figure F; See Note 3
Maximum Output Capacitance
See Absolute Maximum Ratings
MΩ
pF
°C
°C
°C
°C
kHz
V
See Note 2
Package rated to 150°C
UL rated max operating temp 130°C
Application notes Figures A & B
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.# 005-0005462 Rev. C
05/27/10
Page 2
Technical
Specification
Family Figures (all output voltages)
120
IQ18xxxSKxxx
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
Trim Resistance (kOhms)
Trim Resistance (kOhms)
1,000.0
1.2 V
1.5 V
1.8 V
2.5 V
3.3 V
10,000.0
5V
7V
12 V
15 V
100.0
1,000.0
10.0
1.0
0
1
2
3
4
5
6
7
8
9
10
Increase in Vout (%)
100.0
0
1
2
3
4
5
6
7
8
9
10
Increase in Vout (%)
Common Figure 3: Trim graph for trim-up 1.2 to 3.3V outputs.
10,000.0
All voltages
Common Figure 4: Trim graph for trim-up 5 to 15V outputs.
Trim Resistance (kOhms)
1,000.0
100.0
10.0
0
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18 19 20
Decrease in Vout (%)
Common Figure 5: Trim graph for trim down.
Product # IQ18xxxSKxxx
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005462 Rev. C
05/27/10
Page 3
Technical Specification
IQ18012SKx20 Electrical Characteristics (1.2Vout)
Input:9-36V
Output:1.2V
Current:20A
Part No.:IQ18012SKx20
Ta = 25°C, airflow rate = 300 LFM, Vin = 18Vdc 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
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 (0.1A/µs)
Settling Time
Output Voltage Trim Range
Output Voltage Remote Sense Range
Output Over-Voltage Protection
EFFICIENCY
100% Load
Min.
Typ.
Max.
5.0
Units Notes & Conditions
A
mA
mA
V
mA
250V/ms; see Figure 6
RMS
Fast acting external fuse recommended
Vin min; trim up; in current limit
165
10
0.04
175
210
14
20
1.188
1.2
±0.1
±0.1
-18
1.170
0
0
24.0
1.3
2
10,000
90
200
-10
1.4
1.6
75
10
10
1.8
35
9
1.212
±0.3
±0.3
18
1.230
70
20
20
A
V
%
%
mV
V
mV
mV
A
A
A
mA
µF
mV
µs
%
%
V
%
Over sample, line, load, temperature & life
20MHz bandwidth; see Note 1
Full load
Full load
Subject to thermal derating
Negative current drawn from output
Negative current drawn from output
Vout nominal at full load (resistive load); See Note 2
50% to 75% to 50% Iout max
To within 1% Vout nom
Across Pins 8&4; Common Figures 3-5; see Note 3
Across Pins 8&4
Over full temp range
See Figure 1 for efficiency curve
50% Load
74
%
See Figure 1 for efficiency curve
Note 1: Output is terminated with 1µF ceramic and 15µF low-ESR tantalum capacitors. For applications requiring reduced output voltage ripple and
noise, consult SynQor applications support (e-mail: support@synqor.com)
Note 2: Recommended minimum output capacitance is 100uF
Note 3: Trim-up range is limited below 10% at low line and full load. Contact SynQor applications support for more detail (email: support@synqor.com)
Product # IQ18xxxSKxxx
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005462 Rev. C
05/27/10
Page 4
Technical Specification
100
95
90
14
12
Input:9-36V
Output:1.2V
Current:20A
Part No.:IQ18012SKx20
Efficiency (%)
85
80
75
70
65
60
0
5
9 Vin
18 Vin
36 Vin
Power Dissipation (W)
10
8
6
4
9 Vin
2
0
18 Vin
36 Vin
Load Current (A)
10
15
20
0
5
Load Current (A)
10
15
20
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
25
20
20
Iout (A)
Iout (A)
15
15
10
400 LFM (2.0 m/s)
10
400 LFM (2.0 m/s)
5
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
5
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
0
25
40
0
Ambient Air Temperature (°C)
55
70
85
25
40
Ambient Air Temperature (°C)
55
70
85
Figure 3: Encased converter 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 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).
Product # IQ18xxxSKxxx
Phone 1-888-567-9596
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).
Doc.# 005-0005462 Rev. C
05/27/10
Page 5
www.synqor.com
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