14A - SynQor

Technical
Specification
IQ24xxxHEXxx
18-36V
50V
Continuous Input Transient Input
5.0-50V
400W
2250V dc
Half-brick
Outputs
Max Power
Isolation
DC-DC Converter
N
@
08
T
EC
U
V
O
0H
50
50
IN
6V
24
-3
18
IQ
8A
R
A
-G
The InQor Exa 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.
Operational Features
•
•
•
•
High efficiency, 95% at full rated load current
Operating input voltage range: 18-36V
Fixed frequency switching provides predictable EMI
No minimum load requirement
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%
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 # IQ24xxxHEXxx
Phone 1-888-567-9596
CONTENTS
Page No.
Family Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Electrical Characteristics (28 Vout) & Figures . . . . . . . . . . . . . . . . . . . . 4
Electrical Characteristics (50 Vout) & Figures . . . . . . . . . . . . . . . . . . . . 6
Application Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Standards & Qualification Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Encased Mechanical Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Full Feature Mechanical Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
www.synqor.com
Doc.# 005-0005677 Rev. B
06/01/10
Page 1
Technical
Specification
IQ24xxxHEXxx
IQ24 FAMILY ELECTRICAL CHARACTERISTICS (all output voltages)
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.
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 # IQ24xxxHEXxx
Phone 1-888-567-9596
www.synqor.com
Units Notes & Conditions
V
V
V
V dc
V dc
V dc
°C
°C
V
V
Continuous
Continuous
1 s transient, square wave
Baseplate temperature
50V transient for 1 s
V
V
V
V
µF
µH\µF
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
See Note 1
°C
°C
°C
°C
Package rated to 150 °C
UL rated max operating temp 130 °C
kHz
Insolation stage switching freq. is half this
V
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.# 005-0005677 Rev. B
06/01/10
Page 2
Technical
Specification
IQ24xxxHEXxx
Family Figures (all output voltages)
120
Nominal Vout
Typical Current Limit Inception Point
Output Voltage (%)
100
80
Typical Output Voltage at Shutdown
60
40
Vin min
Vin nom
20
Vin max
0
0
Common Figure 1: Typical startup waveform. Input voltage pre-applied, ON/
OFF Pin on Ch 2.
20
30
40
50
60
70
80
90
Load Current (%)
100 110 120 130 140 150
Common Figure 2: Output voltage vs. load current showing typical current limit
curves and converter shutdown points.
10,000.0
100,000.0
12 V
15 V
24 V
Trim Resistance (kOhms)
5.0 V
Trim Resistance (kOhms)
10
1,000.0
100.0
10.0
28 V
40 V
50 V
10,000.0
1,000.0
100.0
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15
0
Increase in Vout (%)
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.
Common Figure 4: Trim graph for trim-up 24 to 50V outputs.
Trim Resistance (kOhms)
10,000.0
All voltages
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 (%)
Common Figure 5: Trim graph for trim down.
Product # IQ24xxxHEXxx
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005677 Rev. B
06/01/10
Page 3
Input:18-36V
Output:28V
Current:14A
Part No.:IQ24280HEx14
Technical Specification
IQ24280HZx14 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
Min.
Typ.
Max.
Units Notes & Conditions
INPUT CHARACTERISTICS
Maximum Input Current
32.2
A
No-Load Input Current
300
380
mA
Disabled Input Current
100
160
mA
Response to Input Transient
2.5
V
Input Terminal Ripple Current
250
mA
Recommended Input Fuse
40
A
28.39
V
Vin min; trim up; in current limit
See Figure 6
RMS
Fast acting external fuse recommended
OUTPUT CHARACTERISTICS
Output Voltage Set Point
27.54
28
Output Voltage Regulation
See Note 3
Over Line
±0.25
Over Load
%
±0.25
Over Temperature
Total Output Voltage Range
%
-700
700
mV
27.160
28.840
V
110
220
mV
Full load
25
50
mV
Full load
14
A
Subject to thermal derating
19.0
A
Output voltage 10% Low
Output Voltage Ripple and Noise
Over sample, line, load, temperature & life
20 MHz bandwidth; see Note 1
Peak-to-Peak
RMS
Operating Output Current Range
0
Output DC Current-Limit Inception
16.0
Output DC Current-Limit Shutdown Voltage
17.5
V
See Note 2
Back-Drive Current Limit while Enabled
3
11.2
4
6
A
Negative current drawn from output
Back-Drive Current Limit while Disabled
0
3
4
mA
Negative current drawn from output
5000
µF
Vout nominal at full load (resistive load)
1.0
V
50% to 75% to 50% Iout max
8
ms
To within 1% Vout nom
20
%
Across Pins 8&4; Common Figures 3-5;
10
%
Across Pins 8&4
37.8
V
Over full temp range
%
See Figure 1 for efficiency curve
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
-50
Output Voltage Remote Sense Range
Output Over-Voltage Protection
35.0
36.4
EFFICIENCY
100% Load
93
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: [email protected])
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 # IQ24xxxHEXxx
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005677 Rev. B
06/01/10
Page 4
Input:18-36V
Output:28V
Current:14A
Part No.:IQ24280HEx14
100
40
95
35
90
30
Power Dissipation (W)
Efficiency (%)
Technical Specification
85
80
75
70
18Vin
24Vin
65
20
15
10
18Vin
24Vin
5
36Vin
36Vin
0
60
0
2
4
6
8
Load Current (A)
10
12
0
14
Figure 1: Efficiency at nominal output voltage vs. load current for minimum,
nominal, and maximum input voltage at 25°C.
14
14
12
12
10
10
8
8
6
4
4
6
8
Load Current (A)
10
12
14
6
4
400 LFM (2.0 m/s)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
2
200 LFM (1.0 m/s)
2
2
Figure 2: Power dissipation at nominal output voltage vs. load current for
minimum, nominal, and maximum input voltage at 25°C.
Iout (A)
Iout (A)
25
100 LFM (0.5 m/s)
100 LFM (0.5 m/s)
0
0
25
40
55
Ambient Air Temperature (°C)
70
25
85
40
55
Ambient Air Temperature (°C)
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).
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.
Product # IQ24xxxHEXxx
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005677 Rev. B
06/01/10
Page 5
Input:18-36V
Output:50V
Current:8.0A
Part No.:IQ24500HEx08
Technical Specification
IQ24500HZx08 ELECTRICAL CHARACTERISTICS (50.0 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
Min.
Typ.
Max.
Units Notes & Conditions
INPUT CHARACTERISTICS
Maximum Input Current
32.2
A
No-Load Input Current
300
380
mA
Disabled Input Current
100
160
mA
Response to Input Transient
Input Terminal Ripple Current
4
V
150
mA
Recommended Input Fuse
40
A
50.70
V
Vin min; trim up; in current limit
See Figure 6
RMS
Fast acting external fuse recommended
OUTPUT CHARACTERISTICS
Output Voltage Set Point
49.18
50
Output Voltage Regulation
See Note 3
Over Line
±0.25
Over Load
%
±0.25
Over Temperature
Total Output Voltage Range
%
-1250
1250
mV
48.500
51.500
V
200
400
mV
Full load
50
100
mV
Full load
8
A
Subject to thermal derating
11.0
A
Output voltage 10% Low
Output Voltage Ripple and Noise
Over sample, line, load, temperature & life
20 MHz bandwidth; see Note 1
Peak-to-Peak
RMS
Operating Output Current Range
0
Output DC Current-Limit Inception
9.0
Output DC Current-Limit Shutdown Voltage
10.0
V
See Note 2
Back-Drive Current Limit while Enabled
1
20
3
4
A
Negative current drawn from output
Back-Drive Current Limit while Disabled
0
3
7
mA
Negative current drawn from output
1000
µF
Vout nominal at full load (resistive load)
1.5
V
50% to 75% to 50% Iout max
8
ms
To within 1% Vout nom
10
%
Across Pins 8&4; Common Figures 3-5;
10
%
Across Pins 8&4
61.5
V
Over full temp range
%
See Figure 1 for efficiency curve
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
-50
Output Voltage Remote Sense Range
Output Over-Voltage Protection
56.5
59.0
EFFICIENCY
100% Load
95
50% Load
95
%
See Figure 1 for efficiency curve
Note 1: Output is terminated with 1 µF ceramic capacitor. For applications requiring reduced output voltage ripple and noise, consult SynQor applications
support (e-mail: [email protected])
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 # IQ24xxxHEXxx
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005677 Rev. B
06/01/10
Page 6
Input:18-36V
Output:50V
Current:8.0A
Part No.:IQ24500HEx08
100
40
95
35
90
30
Power Dissipation (W)
Efficiency (%)
Technical Specification
85
80
75
70
18Vin
24Vin
65
20
15
10
18Vin
24Vin
5
36Vin
36Vin
0
60
0
1
2
3
4
5
Load Current (A)
6
7
0
8
Figure 1: Efficiency at nominal output voltage vs. load current for minimum,
nominal, and maximum input voltage at 25°C.
1
2
3
4
5
6
Load Current (A)
7
8
Figure 2: Power dissipation at nominal output voltage vs. load current for
minimum, nominal, and maximum input voltage at 25°C.
8.0
8.0
7.0
7.0
6.0
6.0
5.0
5.0
Iout (A)
Iout (A)
25
4.0
4.0
3.0
3.0
400 LFM (2.0 m/s)
2.0
200 LFM (1.0 m/s)
1.0
400 LFM (2.0 m/s)
2.0
300 LFM (1.5 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
1.0
100 LFM (0.5 m/s)
100 LFM (0.5 m/s)
0.0
0.0
25
40
55
Ambient Air Temperature (°C)
70
25
85
40
55
Ambient Air Temperature (°C)
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 (5 A/div).
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.
Product # IQ24xxxHEXxx
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005677 Rev. B
06/01/10
Page 7
Technical
Specification
IQ24xxxHEXxx
Application Section
BASIC OPERATION AND FEATURES
CONTROL FEATURES
The converter series uses a two-stage power conversion topology.
The first stage keeps the output voltage constant over variations in
line, load, and temperature. The second stage uses a transformer
to provide the functions of input/output isolation and voltage stepdown to achieve the low output voltage required.
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(-).
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
significantly less energy than Schottky diodes, enabling the
converter to achieve high efficiency.
REMOTE SENSE(+) (Pins 8 and 6): The SENSE(+) inputs
correct for voltage drops along the conductors that connect the
converter’s output pins to the load.
The series of half-brick, quarter-brick and eighth-brick converters
uses the industry standard footprint and pin-out configuration.
ON/OFF
ON/OFF
Remote Enable Circuit
Negative Logic
(Permanently Enabled)
Note: The output over-voltage protection circuit senses the voltage
across the sense leads (pins 8 and 6) to determine when it should
trigger, not the voltage across the converter’s output pins (pins 9
and 5).
To decrease the output voltage, the user should connect a resistor
between Pin 7 (TRIM) and Pin 6 (SENSE(–) input). For a desired
decrease of the nominal output voltage, the value of the resistor
should be:
5V
ON/OFF
Pin 8 should be connected to Vout(+) and Pin 6 should be
connected to Vout(-) at the point on the board where regulation
is desired. If these connections are not made, the converter will
deliver an output voltage that is slightly higher than its specified
value.
OUTPUT VOLTAGE TRIM (Pin 7): The TRIM input permits the
user to adjust the output voltage across the sense leads up or
down according to the trim range specifications. SynQor uses
industry standard trim equations.
Vin(_)
Vin(_)
The ON/OFF signal is active low (meaning that a low voltage turns
the converter on). Figure A details four possible circuits for driving
the ON/OFF pin.
TTL/
CMOS
ON/OFF
Rtrim-down =
Vin(_)
Vin(_ )
Open Collector Enable Circuit
(
100%
Δ
) - 2kΩ
where
Direct Logic Drive
Δ% =
|
Vnominal – Vdesired
Vnominal
| x 100%
Figure A: Various circuits for driving the ON/OFF pin.
Product # IQ24xxxHEXxx
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005677 Rev. B
06/01/10
Page 8
Technical
Specification
IQ24xxxHEXxx
Application Section
To increase the output voltage, the user should connect a
resistor between Pin 7 (TRIM) and Pin 8 (SENSE(+) input). For a
desired increase of the nominal output voltage, the value of the
resistor should be
Rtrim-up =
(
) x VDES + VNOM
Vnominal
1.225 - 2
VDES – VNOM
kΩ
Trim graphs show the relationship between the trim resistor
value and Rtrim-up and Rtrim-down, showing the total range the
output voltage can be trimmed up or down.
Note: The TRIM feature does not affect the voltage at which the
output over-voltage protection circuit is triggered. Trimming the
output voltage too high may cause the over-voltage protection
circuit to engage, particularly during transients.
It is not necessary for the user to add capacitance at the Trim pin.
The node is internally filtered to eliminate noise.
Total DC Variation of Vout: For the converter to meet its full
specifications, the maximum variation of the DC value of Vout,
due to both trimming and remote load voltage drops, should not
be greater than that specified for the output voltage trim range.
Protection Features
Input Under-Voltage Lockout: The converter is designed to
turn off when the input voltage is too low, helping to avoid an
input system instability problem, which is described in more detail
in the application note titled “Input System Instability” on the
SynQor website. The lockout circuitry is a comparator with DC
hysteresis. When the input voltage is rising, it must exceed the
typical “Turn-On Voltage Threshold” value* before the converter
will turn on. Once the converter is on, the input voltage must
fall below the typical Turn-Off Voltage Threshold value before the
converter will turn off.
Output Current Limit: If the output current exceeds the “Output
DC Current Limit Inception” point*, then a fast linear current limit
controller will reduce the output voltage to maintain a constant
output current. If as a result, the output voltage falls below the
“Output DC Current Limit Shutdown Voltage”* for more than 50
ms, then the unit will enter into hiccup mode, with a 500 ms offtime. The unit will then automatically attempt to restart.
Back-Drive Current Limit: If there is negative output current
of a magnitude larger than the “Back-Drive Current Limit while
Enabled” specification*, then a fast back-drive limit controller will
increase the output voltage to maintain a constant output current.
If this results in the output voltage exceeding the “Output OverVoltage Protection” threshold*, then the unit will shut down. The
full I-V output characteristics can be seen in Figure 15.
Output Over-Voltage Limit: If the voltage across the output
pins exceeds the Output Over-Voltage Protection threshold, the
converter will immediately stop switching. This prevents damage
to the load circuit due to 1) excessive series resistance in output
current path from converter output pins to sense point, 2) a
release of a short-circuit condition, or 3) a release of a current
limit condition. Load capacitance determines exactly how high
the output voltage will rise in response to these conditions. After
500ms the converter will automatically restart for all but S Feature
Set option, which is latching and will not restart until input power
is cycled or the ON/OFF input is toggled.
Over-Temperature Shutdown: A temperature sensor on the
converter senses the average temperature of the module. The
thermal shutdown circuit is designed to turn the converter off
when the temperature at the sensed location reaches the “OverTemperature Shutdown” value*. It will allow the converter to turn
on again when the temperature of the sensed location falls by the
amount of the “Over-Temperature Shutdown Restart Hysteresis”
value*.
* See Electrical Characteristics page.
Product # IQ24xxxHEXxx
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005677 Rev. B
06/01/10
Page 9
Technical
Specification
IQ24xxxHEXxx
Application Section
APPLICATION CONSIDERATIONS
A power derating curve can be calculated for any heatsink that is
attached to the base-plate of the converter. It is only necessary to
determine the thermal resistance, RTHBA, of the chosen heatsink
between the base-plate and the ambient air for a given airflow
rate. This information is usually available from the heatsink vendor.
The following formula can the be used to determine the maximum
power the converter can dissipate for a given thermal condition if
its base-plate is to be no higher than 100 ºC.
Input System Instability: This condition can occur because any
DC-DC converter appears incrementally as a negative resistance
load. A detailed application note titled “Input System Instability” is
available on the SynQor website which provides an understanding
of why this instability arises, and shows the preferred solution for
correcting it.
Application Circuits: Figure B below provides a typical circuit
diagram which details the input filtering and voltage trimming.
Input Filtering and External Input Capacitance: Figure
C below shows the internal input filter components. This filter
dramatically reduces input terminal ripple current, which otherwise
could exceed the rating of an external electrolytic input capacitor.
The recommended external input capacitance is specified in the
Input Characteristics section on the Electrical Specifications page.
More detailed information is available in the application note titled
“EMI Characteristics” on the SynQor website.
To increase the output voltage, the user should connect a resistor
between Pin 7 (TRIM) and Pin 8 (SENSE(+) input). For a desired
increase of the nominal output voltage, the value of the resistor
should be
Pdiss
max
=
100 ºC - TA
RTHBA
This value of power dissipation can then be used in conjunction
with the data shown in Figure 2 to determine the maximum load
current (and power) that the converter can deliver in the given
thermal condition.
Output Filtering and External Output Capacitance: Figure
C below shows the internal output filter components. This filter
dramatically reduces output voltage ripple. However, some
minimum external output capacitance is required, as specified in
the Output Characteristics section on the Electrical Specifications
page. No damage will occur without this capacitor connected, but
peak output voltage ripple will be much higher.
For convenience, Figures 3 and 4 provide Power derating curves
for an encased converter without a heatsink and with a typical
heatsink.
Thermal Considerations: The maximum operating base-plate
temperature, TB, is 100 ºC. As long as the user’s thermal system
keeps TB < 100 ºC, the converter can deliver its full rated power.
Vin(+)
Electrolytic
Capacitor
External
Input
Filter
Vin
Vout(+)
Vsense(+)
ON/OFF
Trim
Vsense(_)
Vin(_)
Rtrim-up
or
Rtrim-down
Cload
Iload
Vout(_)
Figure B: Typical application circuit (negative logic unit, permanently enabled).
Lin
Vin(+)
Vout(+)
C1
C2
Regulation
Stage
Current
Sense
Isolation
Stage
Vin(_)
Vout(-)
Figure C: Internal Input and Output Filter Diagram (component values listed on
specifications page).
Product # IQ24xxxHEXxx
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Doc.# 005-0005677 Rev. B
06/01/10
Page 10
Technical
Specification
IQ24xxxHEXxx
Standards & Qualification Testing
Parameter
Notes & Conditions
STANDARDS COMPLIANCE
UL 60950-1: 2003
Basic Insulation
CAN/CSA-C22.2 No. 60950-1:2003
EN60950-1:2001
IEC 61000-4-2
ESD test, 8 kV - NP, 15 kV air - NP (Normal Performance)
Note: An external input fuse must always be used to meet these safety requirements. Contact SynQor for official safety certificates on new
releases or download from the SynQor website.
Parameter
# Units Test Conditions
QUALIFICATION TESTING
Life Test
32
95% rated Vin and load, units at derating point, 1000 hours
Vibration
5
10-55 Hz sweep, 0.060" total excursion, 1 min./sweep, 120 sweeps for 3 axis
Mechanical Shock
5
100g minimum, 2 drops in x, y and z axis
Temperature Cycling
10
-40 °C to 100 °C, unit temp. ramp 15 °C/min., 500 cycles
Power/Thermal Cycling
5
Toperating = min to max, Vin = min to max, full load, 100 cycles
Design Marginality
5
Tmin-10 °C to Tmax+10 °C, 5 °C steps, Vin = min to max, 0-105% load
Humidity
5
85 °C, 85% RH, 1000 hours, continuous Vin applied except 5 min/day
Solderability
15 pins
Altitude
2
MIL-STD-883, method 2003
70,000 feet (21 km), see Note
Note: A conductive cooling design is generally needed for high altitude applications because of naturally poor convective cooling at rare atmospheres.
Product # IQ24xxxHEXxx
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Doc.# 005-0005677 Rev. B
06/01/10
Page 11
Technical
Specification
IQ24xxxHEXxx
Standard Mechanical Diagram
2.486
±.020 [ 63.14
±0.5 ]
2.00 [ 50.8 ]
1.400 [ 35.56 ]
+.002
-.005
+0.05
13
-0.12
OVERALL
HEIGHT
.512
[
1.000 [ 25.4 ]
.700 [ 17.78 ]
.400 [ 10.16 ]
.243 ±.020
[ 6.17 ±0.5 ]
9
8
7
6
]
.163
[ 4.14 ]
5
.243 ±.020
[ 6.17 ±0.5 ]
2.386 ±.020
[ 60.6 ±0.5
] ]
TOP VIEW
1.90
[ 48.3 ]
SIDE VIEW
1.90
[ 48.3 ]
.233 ±.020
[ 5.92 ±0.5 ]
1
2
4
.543 ±.020 [ 13.79 ±0.5 ]
.400 [ 10.16 ]
THRU HOLE
M3 (SEE NOTE 8)
STANDOFFS (4)
+.007
-.010
+0.17
0.69
-0.25
BOTTOMSIDE CLEARANCE
.027
[
1.400 [ 35.56 ]
NOTES
]
PIN DESIGNATIONS
1)
Applied torque per screw should not exceed 6in-lb. (0.7 Nm).
2)
3)
Pin
Name
Function
Baseplate flatness tolerance is 0.004” (.10 mm) TIR for surface.
1
Vin(+)
2
ON/OFF
Positive input voltage
TTL input to turn converter on and off, referenced
to Vin(–), with internal pull up.
Negative input voltage
5)
Pins 1-4, 6-8 are 0.040” (1.02mm) diameter, with 0.080”
(2.03mm) diameter standoff shoulders.
Pins 5 and 9 are 0.080” (2.03 mm) diameter with 0.125”
(3.18 mm) diameter standoff shoulders.
All Pins: Material - Copper Alloy; Finish - Matte Tin over Nickel plate
6)
4
Vin(–)
5
Vout(–)
Negative output voltage
6
SENSE(–)
Negative remote sense1
Undimensioned components are shown for visual reference only.
7
TRIM
7)
Weight: 4.9 oz (139 g)
8
SENSE(+)
Positive remote sense3
8)
Threaded and Non-Threaded options available
9
Vout(+)
Positive output voltage
4)
9)
All dimensions in inches (mm).
Tolerances:
x.xx +/-0.02 in. (x.x +/-0.5mm)
x.xxx +/-0.010 in. (x.xx +/-0.25mm)
unless otherwise noted.
10) Recommended pin length is 0.03” (0.76 mm) greater than the PCB
thickness.
11) Workmanship: Meets or exceeds IPC-A-610C Class II
Product # IQ24xxxHEXxx
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Output voltage trim2
Notes:
1)
SENSE(–) should be connected to Vout(–) either remotely or at the
converter.
2)
Leave TRIM pin open for nominal output voltage.
3)
www.synqor.com
SENSE(+) should be connected to Vout(+) either remotely or at the
converter.
Doc.# 005-0005677 Rev. B
06/01/10
Page 12
Technical
Specification
IQ24xxxHEXxx
Flanged Mechanical Diagram
NOTES
1)
Applied torque per screw should not exceed 6in-lb. (0.7 Nm).
2)
Baseplate flatness tolerance is 0.004” (.10 mm) TIR for surface.
3)
5)
Pins 1, 2, 4, and 6-8 are 0.040” (1.02mm) diameter, with 0.080”
(2.03mm) diameter standoff shoulders.
Pins 5 and 9 are 0.080” (2.03 mm) diameter with 0.125”
(3.18 mm) diameter standoff shoulders.
All Pins: Material - Copper Alloy; Finish - Matte Tin over Nickel plate
6)
Undimensioned components are shown for visual reference only.
7)
Weight: 4.9 oz (139 g)
8)
Threaded and Non-Threaded options available
4)
9)
All dimensions in inches (mm).
Tolerances:
x.xx +/-0.02 in. (x.x +/-0.5mm)
x.xxx +/-0.010 in. (x.xx +/-0.25mm)
unless otherwise noted.
10) Recommended pin length is 0.03” (0.76 mm) greater than the PCB
thickness.
11) Workmanship: Meets or exceeds IPC-A-610C Class II
Product # IQ24xxxHEXxx
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Pin
1
Name
Vin(+)
2
ON/OFF
4
Vin(–)
5
6
7
8
9
Vout(–)
SENSE(–)
TRIM
SENSE(+)
Vout(+)
PIN DESIGNATIONS
Function
Positive input voltage
TTL input to turn converter on and off,
referenced to Vin(–), with internal pull up.
Negative input voltage
Negative output voltage
Negative remote sense (See note 1)
Output voltage trim (See note 2)
Positive remote sense (See note 3)
Positive output voltage
Notes:
1)
SENSE(–) should be connected to Vout(–) either remotely or at the converter.
2)
Leave TRIM pin open for nominal output voltage.
3)
SENSE(+) should be connected to Vout(+) either remotely or at the
converter.
www.synqor.com
Doc.# 005-0005677 Rev. B
06/01/10
Page 13
Technical
Specification
IQ24xxxHEXxx
PART NUMBERING SYSTEM
ORDERING INFORMATION
The part numbering system for SynQor’s dc-dc converters follows the format
shown in the example below.
The tables below show the valid model numbers and ordering options for
converters in this product family. When ordering SynQor converters, please
ensure that you use the complete 15 character part number consisting of
the 12 character base part number and the additional characters for options.
Add “-G” to the model number for 6/6 RoHS compliance.
IQ 2 4 5 0 0 H E C 0 8 N R S - G
Model Number
6/6 RoHS
Options
(see
Ordering Information)
IQ24280HEw14xyz
IQ24500HEw08xyz
Input
Voltage
18-36
18-36
Output
Voltage
28 V
50 V
Max Output
Current
14.0
8.0
Output Current
Thermal Design
Performance Level
Package Size
Output Voltage
Input Voltage
The following options must be included in place of the w x y z spaces in the
model numbers listed above.
Product Family
The first 12 characters comprise the base part number and the last 3
characters indicate available options. The “-G” suffix indicates 6/6 RoHS
compliance.
Application Notes
A variety of application notes and technical white papers can be downloaded
in pdf format from our website.
Options Description: w x y z
Enable
Thermal Design
Pin Style
Logic
C - Encased with Threaded
Baseplate
D - Encased with Non-Threaded
Baseplate
V - Encased with Flanged
Baseplate
N - Negative R - 0.180"
Feature Set
A - Standard w/
auto-recovery OVP
S - Standard w/
latching OVP
RoHS Compliance: The EU led RoHS (Restriction of Hazardous
Substances) Directive bans the use of Lead, Cadmium, Hexavalent
Chromium, Mercury, Polybrominated Biphenyls (PBB), and Polybrominated
Diphenyl Ether (PBDE) in Electrical and Electronic Equipment. This SynQor
product is 6/6 RoHS compliant. For more information please refer to
SynQor’s RoHS addendum available at our RoHS Compliance / Lead
Free Initiative web page or e-mail us at [email protected]
Not all combinations make valid part numbers, please contact SynQor for
availability. See the Product Summary web page for more options.
PATENTS
SynQor holds the following U.S. patents, one or more of which apply to
each product listed in this document. Additional patent applications may
be pending or filed in the future.
Contact SynQor for further information:
Phone:
Toll Free:
Fax:
E-mail:
Web:
Address:
Product # IQ24xxxHEXxx
978-849-0600
888-567-9596
978-849-0602
[email protected]
www.synqor.com
155 Swanson Road
Boxborough, MA 01719
USA
Phone 1-888-567-9596
5,999,417
6,222,742
6,545,890
6,577,109
6,594,159
6,731,520
6,894,468
6,896,526
6,927,987
7,050,309
7,072,190
7,085,146
7,119,524
7,269,034
7,272,021
7,272,023
7,558,083
7,564,702
Warranty
SynQor offers a two (2) year limited warranty. Complete warranty
information is listed on our website or is available upon request from
SynQor.
Information furnished by SynQor is believed to be accurate and reliable.
However, no responsibility is assumed by SynQor for its use, nor for any
infringements of patents or other rights of third parties which may result
from its use. No license is granted by implication or otherwise under any
patent or patent rights of SynQor.
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Doc.# 005-0005677 Rev. B
06/01/10
Page 14