Technical
Specification
IQ70xxxQTXxx
34-135 V
Continuous Input
1.8-48 V
Outputs
130 W
Max Power
3000 V dc
REINFORCED Isolation
Quarter-brick
DC-DC Converter
The InQor® quarter-brick converter series is
composed of next-generation, board-mountable,
isolated (REINFORCED), 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.
Operational Features
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•
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High efficiency, 91% at full rated load current
Delivers full power with minimal derating - no heatsink required
Operating input voltage range: 34-135 V
Fixed frequency switching provides predictable EMI
No minimum load requirement
Mechanical Features
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Industry standard quarter-brick pin-out configuration
Size: 1.536" x 2.386" (39.01 x 60.6)
Height: 0.500” (12.7mm)
Weight: 3.02oz (85.6g)
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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 -20%, +10%
CONTENTS
IQ70-QT Family Electrical Characteristics (all output voltages). . . . . . . . 2
IQ70-QTC Family Figures (all output voltages) . . . . . . . . . . . . . . . . . . . 3
IQ70018QTx40 Electrical Characteristics (1.8 Vout) & Figures . . . . . . . 4-5
IQ70033QTx30 Electrical Characteristics (3.3 Vout) & Figures . . . . . . . 6-7
IQ70050QTx24 Electrical Characteristics (5.0 Vout) & Figures . . . . . . . 8-9
IQ70070QTx18 Electrical Characteristics (7.0 Vout) & Figures . . . . . 10-11
IQ70120QTx11 Electrical Characteristics (12 Vout) & Figures . . . . . 12-13
IQ70150QTx09 Electrical Characteristics (15 Vout) & Figures . . . . . 14-15
IQ70240QTx06 Electrical Characteristics (24 Vout) & Figures . . . . . 16-17
IQ70300QTx04 Electrical Characteristics (30 Vout) & Figures . . . . . 18-19
IQ70480QTx03 Electrical Characteristics (48 Vout) & Figures . . . . . 20-21
Application Notes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22-25
IQ70-QTX Family Standards & Qualifications (all output voltages) . . . . 26
IQ70 QT Family Mechanical Diagram. . . . . . . . . . . . . . . . . . . . . . . . . 27
IQ70 QTV Mechanical Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Page No.
Safety Features
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3000 V, MΩ input-to-output isolation
UL 60950-1 2nd Ed. 2007 Reinforced Insulation
CAN/CSA-C22.2 No. 60950-1-07
EN60950-1 Ed. 2.0
CE Marked
RoHS compliant (see last page)
Product # IQ70xxxQTXxx
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-00005230 Rev.
B
5/10/10
Page 1
IQ70-QTX Family
IQ70-QT Family Electrical Characteristics (all output voltages)
Ta = 25 °C, airflow rate = 300 LFM, Vin = 70 V 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.
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Non-Operating
Operating
Operating Transient Protection
Isolation Voltage
Input to Output
Input to Base-Plate
Output to Base-Plate
Operating Temperature
-40
Storage Temperature
-55
Voltage at ON/OFF input pin
-2
INPUT CHARACTERISTICS
Operating Input Voltage Range
34
Input Under-Voltage Lockout
Turn-On Voltage Threshold
32.6
Turn-Off Voltage Threshold
30.4
Lockout Voltage Hysteresis
Recommended External Input Capacitance
Input Filter Component Values (L\C)
DYNAMIC CHARACTERISTICS
Turn-On Transient
Turn-On Time
Start-Up Inhibit Time
200
Output Voltage Overshoot
ISOLATION CHARACTERISTICS
Isolation Voltage (dielectric strength)
Isolation Resistance
100
Isolation Capacitance (input to output)
TEMPERATURE LIMITS FOR POWER DERATING CURVES
Semiconductor Junction Temperature
Board Temperature
Transformer Temperature
Maximum Baseplate Temperature, Tb
FEATURE CHARACTERISTICS
Switching Frequency
230
ON/OFF Control
Off-State Voltage
2.4
On-State Voltage
-2
ON/OFF Control
Pull-Up Voltage
Pull-Up Resistance
Over-Temperature Shutdown OTP Trip Point
Over-Temperature Shutdown Restart Hysteresis
RELIABILITY CHARACTERISTICS
Calculated MTBF (Telcordia) TR-NWT-000332
Calculated MTBF (MIL-217) MIL-HDBK-217F
Field Demonstrated MTBF
Technical
Specification
Parameter
Min.
Typ.
Max.
150
135
-
3000
3000
3000
100
125
18
Units Notes & Conditions
V
V
V
V dc
V dc
V dc
°C
°C
V
V
V
V
V
µF
µH\µF
Continuous
Continuous
Baseplate temperature
70
32.9
30.7
2.2
100
4.7\1.5
135
33.8
31
Typical ESR 0.1-0.2 Ω
Internal values; see Figure E
10
230
0
250
ms
ms
%
Full load, Vout=90% nom.
-40 °C to +125 °C; Figure F
Maximum Output Capacitance
See Absolute Maximum Ratings
500V EN 60255-5
See Note 1
Package rated to 150 °C
UL rated max operating temp 130 °C
1000
125
125
125
100
250
270
1.8
0.8
5
50
125
10
TBD
TBD
MΩ
pF
°C
°C
°C
°C
kHz
V
Same for the isolation stage
Application notes Figures A & B
V
kΩ
°C
°C
Average PCB Temperature
106 Hrs. 80% load, 200LFM, 40 °C Ta
106 Hrs. 80% load, 200LFM, 40 °C Ta
106 Hrs. See our website for details
Note 1: Higher values of isolation capacitance can be added external to the module.
Product # IQ70xxxQTXxx
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-00005230 Rev.
B
5/10/10
Page 2
IQ70-QTX Family
IQ70-QTC Family Figures (all output voltages)
Nominal Vout
120
Typical Current Limit Inception Point
100
Technical
Specification
Output Voltage (%)
80
Typical Output Voltage at Shutdown
60
40
Vin, Min.
20
0
0
10
20
30
40
50
Vin, Typ.
Vin, Max.
60
70
80
90 100 110 120 130 140 150
Load Current (% )
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.
100,000.0
100,000.0
Trim Resistance (kOhms)
Trim Resistance (kOhms)
10,000.0
1.8 V
3.3 V
5V
7V
12 V
10,000.0
15 V
24 V
30 V
48 V
1,000.0
1,000.0
100.0
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 1.8 to 12 V outputs.
10,000.0
Common Figure 4: Trim graph for trim-up 15 to 48V outputs.
All voltages
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 # IQ70xxxQTXxx
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-00005230 Rev.
B
5/10/10
Page 3
Technical Specification
IQ70018QTx40 Electrical Characteristics (1.8 Vout)
Input:
Output:
Current:
Part No.:
34-135 V
1.8 V
40 A
IQ70018QTx40
Ta = 25 °C, airflow rate = 300 LFM, Vin = 70 V 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 A/µs)
Settling Time
Output Voltage Trim Range
Output Voltage Remote Sense Range
Output Over-Voltage Protection
EFFICIENCY
100% Load
50% Load
Min.
Typ.
80
2
0.04
170
Max.
3.3
100
4
Units Notes & Conditions
A
mA
mA
V
mA
A
V
%
%
mV
V
mV
mV
A
A
V
A
mA
µF
mV
µs
%
%
V
%
%
Vin min; trim up; in current limit
10
1.782
1.8
±0.1
±0.1
-27
1.755
0
0
44.0
90
20
48.0
0.9
3.2
10
1.818
±0.3
±0.3
27
1.845
180
40
40
52.0
See Figure 6
RMS
Fast acting external fuse recommended
Over sample, line, load, temperature & life
20 MHz bandwidth; see Note 1
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% Iout max
To within 1% Vout nom
Across Pins 8&4; Common Figures 3-5; see Note 2
Across Pins 8&4
Over full temp range
See Figure 1 for efficiency curve
See Figure 1 for efficiency curve
10,000
120
500
-20
2.1
2.2
84
86
10
10
2.3
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: Trim-up range is limited below 10% at low line and full load.
Product # IQ70xxxQTXxx
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-00005230 Rev.
B
5/10/10
Page 4
Technical Specification
100
95
90
16
20
Input:
Output:
Current:
Part No.:
34-135 V
1.8 V
40 A
IQ70018QTx40
Efficiency (%)
85
80
75
70
65
60
0
5
10
15
34 Vin
70 Vin
135
Vin
Power Dissipation (W)
12
8
34 Vin
4
70 Vin
135
Vin
0
5
10
15
0
Load Current (A)
20
25
30
35
40
Load Current (A)
20
25
30
35
40
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.
45
40
35
30
45
40
35
30
Iout (A)
Iout (A)
25
20
15
10
5
0
25
40
55
70
85
25
20
15
10
5
0
25
40
55
70
85
400
300
200
100
LFM
LFM
LFM
LFM
(2.0
(1.5
(1.0
(0.5
m/s)
m/s)
m/s)
m/s)
400
300
200
100
LFM
LFM
LFM
LFM
(2.0
(1.5
(1.0
(0.5
m/s)
m/s)
m/s)
m/s)
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 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: 15µF tantalum cap and 1µF ceramic cap. Ch
1: Vout, Ch 2: Iout.
Product # IQ70xxxQTXxx
Phone 1-888-567-9596
Figure 6: Output voltage response to step-change in input voltage (nominal to
maximum), at full load current. Load cap: 15µF tantalum capacitor and 1uF ceramic
cap. Ch 1: Vout, Ch 2: Vin.
Doc.# 005-00005230 Rev.
B
5/10/10
Page 5
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