IQ32xxxQGXxx
9-75V
Continuous Input
Technical
Specification
Quarter-brick
DC-DC Converter
100V
Transient Input
1.8-48V
Outputs
50W
Max Power
2250V dc
Isolation
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Operational Features
•
•
•
•
•
High efficiency, 85% at full rated load current
Delivers full power with minimal derating - no heatsink required
Operating input voltage range: 9-75V
Fixed frequency switching provides predictable EMI
No minimum load requirement
Protection Features
Mechanical Features
•
•
•
•
Industry standard quarter-brick pin-out configuration
Size: 1.536" x 2.386" (39.01 x 60.6mm)
Total height: 0.500” (12.7mm)
Total weight: 3oz (85g)
•
•
•
•
•
Input under-voltage lockout
Output current limit and short circuit protection
Active back bias limit
Output over-voltage protection
Thermal shutdown
Control Features
CONTENTS
9-
32
75
0
V
50
IN
5.
QG
0V
C
1
The InQor quarter-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.
IQ
O
UT
0
@
NR
10
S-
A
G
• On/Off control referenced to input side
• Remote sense for the output voltage
• Output voltage trim range of -20%, +10%
Safety Features
Family Electrical Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Family Electrical Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Electrical Characteristics (15 Vout) & Figures . . . . . . . . . . . . . . . . . . . . 4
Application Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
Standards & Qualification Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Encased Mechanical Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Flanged Mechanical Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
ORDERING INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Page No.
Pending
• Input-to-output isolation: 2250V
• UL 60950-1 2nd Ed. 2007 Basic Insulation
• CAN/CSA-C22.2 No. 60950-1-07
• EN60950-1 Ed. 2.0
• CE Marked 2006/95/EC Low Voltage Directive
• IEC 61000-4-2
• RoHS compliant (see last page)
Product # IQ32xxxQGXxx
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005545 Rev. 2
05/11/10
Page 1
IQ32xxxQGXxx
IQ32 Family Electrical Characteristics (all output voltages)
Ta = 25 °C, airflow rate = 300 LFM, Vin = 32V 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.
Technical
Specification
Parameter
Min.
Typ.
Max.
Units Notes & Conditions
V
V
V
Continuous
Continuous
100 ms
Basic insulation
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V dc
V dc
V dc
°C
°C
V
V
Baseplate temperature
100V transient for 1 s; see Note 1
V
V
V
µF
µH\µF
Typical ESR 0.1-0.2 Ω
Internal values; see Figure E
ms
ms
%
Full load, Vout=90% nom.
-40 °C to +125 °C; Figure F
Maximum Output Capacitance
See Absolute Maximum Ratings
MΩ
pF
°C
°C
°C
°C
Package rated to 150 °C
UL rated max operating temp 130 °C
See Common Figure 3 for derating curve
kHz
V
Regulation and Isolation stages
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
Product # IQ32xxxQGXxx
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005545 Rev. 2
05/11/10
Page 2
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Non-Operating
100
Operating
75
Operating Transient Protection
100
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
9
32
75
Input Under-Voltage Lockout
Turn-On Voltage Threshold
10.9
11.5
12.1
Turn-Off Voltage Threshold
8.1
8.5
8.9
Lockout Voltage Hysteresis
3.0
Recommended External Input Capacitance
100
Input Filter Component Values (L\C)
1.0\6.6
DYNAMIC CHARACTERISTICS
Turn-On Transient
Turn-On Time
9
Start-Up Inhibit Time
200
230
250
Output Voltage Overshoot
0
ISOLATION CHARACTERISTICS
Isolation Voltage (dielectric strength)
Isolation Resistance
30
Isolation Capacitance (input to output)
1000
Semiconductor Junction Temperature
125
Board Temperature
125
Transformer Temperature
125
Maximum Baseplate Temperature, Tb
100
FEATURE CHARACTERISTICS
Switching Frequency
230
250
270
ON/OFF Control
Off-State Voltage
2.4
1.8
On-State Voltage
-2
0.8
ON/OFF Control
Pull-Up Voltage
5
Pull-Up Resistance
50
Over-Temperature Shutdown OTP Trip Point
125
Over-Temperature Shutdown Restart Hysteresis
10
RELIABILITY CHARACTERISTICS
Calculated MTBF (Telcordia) TR-NWT-000332
2.5
Calculated MTBF (MIL-217) MIL-HDBK-217F
2
Field Demonstrated MTBF
Note 1: Higher values of isolation capacitance can be added external to the module.
IQ32xxxQGXxx
Family Figures (all output voltages)
120
Technical
Specification
Nominal Vout
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Output Voltage (%)
80
60
40
Vin min
100
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.
100,000.0
Common Figure 2: Output voltage vs. load current showing typical current limit
curves and converter shutdown points.
100,000.0
Trim Resistance (kOhms)
Trim Resistance (kOhms)
10,000.0
1.8 V
3.3 V
5V
7V
12 V
15 V
24 V
30 V
48 V
10,000.0
1,000.0
1,000.0
100.0
10.0
100.0
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Increase in Vout (%)
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 48 V 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 # IQ32xxxQGXxx
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005545 Rev. 2
05/11/10
Page 3
Technical Specification
IQ32150QGx03 Electrical Characteristics (15.0 Vout)
Input:15V
Output:15.0V
Current:3.3A
Part No.:IQ32150QGx03
Ta = 25 °C, airflow rate = 300 LFM, Vin = 32V 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
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Product # IQ32xxxQGXxx
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005545 Rev. 2
05/11/10
Page 4
INPUT CHARACTERISTICS
Maximum Input Current
8.5
A
Vin min; trim up; in current limit
No-Load Input Current
200
250
mA
Disabled Input Current
2.4
4.0
mA
Response to Input Transient
0.72
V
See Figure 6
Input Terminal Ripple Current
100
mA
RMS
Recommended Input Fuse
TBD
A
Fast acting external fuse recommended
OUTPUT CHARACTERISTICS
Output Voltage Set Point
14.85
15
15.15
V
Output Voltage Regulation
Over Line
±0.1
±0.3
%
Over Load
±0.1
±0.3
%
Over Temperature
-225
225
mV
Total Output Voltage Range
14.625
15.375
V
Over sample, line, load, temperature & life
Output Voltage Ripple and Noise
20 MHz bandwidth; see Note 1
Peak-to-Peak
50
130
mV
Full load
RMS
10
20
mV
Full load
A
Operating Output Current Range
0
3.3
Subject to thermal derating
Output DC Current-Limit Inception
3.6
4.0
4.3
A
Output voltage 10% Low
Output DC Current-Limit Shutdown Voltage
9
V
Back-Drive Current Limit while Enabled
0.4
A
Negative current drawn from output
Back-Drive Current Limit while Disabled
0
15
50
mA
Negative current drawn from output
Maximum Output Capacitance
1,000
µF
Vout nominal at full load (resistive load)
Output Voltage during Load Current Transient
Step Change in Output Current (0.1 A/µs)
950
mV
50% to 75% to 50% Iout max
Settling Time
200
µs
To within 1% Vout nom
Output Voltage Trim Range
-20
10
%
Across Pins 8&4; Common Figures 3-5; see Note 2
Output Voltage Remote Sense Range
10
%
Across Pins 8&4
Output Over-Voltage Protection
17.6
18.3
19.1
%
Over full temp range
EFFICIENCY
100% Load
85
%
See Figure 1 for efficiency curve
50% Load
86
%
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: Trim-up range is limited below 10% at low line and full load.
IQ32xxxQGXxx
BASIC OPERATION AND FEATURES
This converter series uses a two-stage power
topology. The first stage is a buck-converter that
output voltage constant over variations in line,
temperature. The second stage uses a transformer
the functions of input/output isolation and voltage
step-down to achieve the output voltage required.
conversion
keeps the
load, and
to provide
step-up or
Technical
Specification
CONTROL FEATURES
REMOTE ON/OFF (Pin 2):
The ON/OFF input, Pin 2, permits
the user to control when the converter is on or off. This input
is referenced to the return terminal of the input bus, Vin(-).
The ON/OFF signal is active low (meaning that a low turns the
converter on). Figure A details four possible circuits for driving
the ON/OFF pin. Figure B is a detailed look of the internal ON/
OFF circuitry.
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Both the first stage and the second stage switch at a fixed
frequency for predictable EMI performance. Rectification of
the transformer’s output is accomplished with synchronous
rectifiers. These devices, which are MOSFETs with a very low
on-state resistance, dissipate far less energy than Schottky
diodes. This is the primary reason that the converter has such
high efficiency, even at very low output voltages and very high
output currents.
These converters are offered totally encased to withstand harsh
environments and thermally demanding applications. Dissipation
throughout the converter is so low that it does not require a
heatsink for operation in many applications; however, adding
a heatsink provides improved thermal derating performance in
extreme situations.
This series of converters use the industry standard footprint and
pin-out configuration.
ON/OFF
ON/OFF
REMOTE SENSE(+) (Pins 7 and 5):
The SENSE(+) inputs
correct for voltage drops along the conductors that connect the
converter’s output pins to the load.
Pin 7 should be connected to Vout(+) and Pin 5 should be
connected to Vout(-) at the point on the board where regulation
is desired. A remote connection at the load can adjust for a
voltage drop only as large as that specified in this datasheet,
that is
[
Vout(+) - Vout(-)
]
–
[V
sense(+) -
V
sense(-)
]
<
Sense Range % x Vout
Pins 7 and 5 must be connected for proper regulation of
the output voltage. If these connections are not made, the
converter will deliver an output voltage that is slightly higher
than its specified value.
Note: the output over-voltage protection circuit senses the
voltage across the output (pins 8 and 4) to determine when
it should trigger, not the voltage across the converter’s sense
leads (pins 7 and 5). Therefore, the resistive drop on the board
should be small enough so that output OVP does not trigger,
even during load transients.
Vin(
_
)
Vin(
_
)
Remote Enable Circuit
Negative Logic
(Permanently Enabled)
5V
5V
ON/OFF
50k
TTL/
CMOS
ON/OFF
ON/OFF
50k
50k
TTL
Vin(
)
_
Vin(
)
_
100pF
100pF
Open Collector Enable Circuit
Direct Logic Drive
V
in(
_
)
Figure A:
Various circuits for driving the ON/OFF pin.
Figure B:
Internal ON/OFF pin circuitry
Product # IQ32xxxQGXxx
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005545 Rev. 2
05/11/10
Page 5
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