Technical
S pecification
IQ12240QTA04
12V in
Input
24Vout
Output
4Amp
Current
2250Vdc
Isolation
Quar ter-brick
DC/DC Conver ter
T h e I Q 1 2 2 4 0 Q T A 0 4
I nQ or
™
T e r a q u a r t e r - b r i c k c o n v e r t e r i s a
n ext - gene ra t ion , bo a rd -m ou nt a bl e, is ol a te d, fixe d s wit ch ing fr e -
q u enc y DC/ DC con v erter t h at u s es sy n ch ro no us r ectific atio n t o
a ch ieve e xtreme ly h igh con ver sio n efficie ncy . Th e p owe r dis -
s ip ated b y the con verter is s o l ow th a t a h ea tsin k is no t
r eq ui red , wh ich s aves co st, w eight, heigh t, a nd a p pl ica tion
e ffor t. A n op tion al b a se- p la ted v ers io n i s a va ila b le for t ho s e
d ema n din g a pp l ica t ion s th a t req u ire he at s ink s , a nd fo r ha rs h
e nvir on ments an e ncas ed vers ion is als o available. Th e Ter a
s er ies offer s th e ma ximu m u sa b le o ut p u t c ur r ent fo r a n y s t an -
dard “quarter-brick” module. RoHS compliant (see page 9).
Operational Features
• High efficiency, >89% at full rated load current
• Delivers up to 4 amps of output current (96W) with min-
imal derating - no heatsink required
• Wide operating input voltage range: 9V – 22V
• Fixed frequency switching provides predictable EMI per-
formance
• No minimum load requirement means no preload resis-
tors required
Open Frame
Encased
Pr otection Features
• Input under-voltage lockout disables converter at low
input voltage conditions
• Output current limit and short circuit protection protects
converter and load from permanent damage and conse-
quent hazardous conditions
• Active back bias limit prevents damage to converter
from external load induced pre-bias
• Output over-voltage protection protects load from dam-
aging voltages
• Thermal shutdown protects converter from abnormal
environmental conditions
Mechanical Features
• Industry standard quarter-brick pin-out configuration
• Industry standard size: 1.45” x 2.3” (36.8x58.4mm)
• Total open frame height less than 0.43” (10.9mm), per-
mits better airflow and smaller card pitch
• Total open frame weight: 1.5 oz. (42 grams)
• Flanged pins designed to permit surface mount soldering
(allowing to avoid wave solder) using FPiP technique
Safety Features
• 2250V, 30 MW input-to-output isolation provides
input/output ground separation
• UL/cUL 60950-1 recognized (US & Canada), basic
insulation rating (pending)
• TUV certified to EN60950-1 (pending)
• Meets 72/23/EEC and 93/68/EEC directives which
facilitates CE Marking in user’s end product
• Board and plastic components meet UL94V-0 flammabil-
ity requirements
Contr ol Features
• On/Off control referenced to input side
• Remote sense for the output voltage compensates for
output distribution drops
• Output voltage trim permits custom voltages and voltage
margining
Product # IQ12240QTA04
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-IQ24004 Rev. A
4/6/07
Page 1
Technical Specification
IQ12240QTA04 ELECTRICAL CHARACTERISTICS
Parameter
P
ABSOLUTE MAXIMUM RATINGS
Input:
Output:
Current:
Package:
9-22 V
24.0 V
4A
Quarter-brick
T
A
=25°C, airflow rate=300 LFM, V
in
=12Vdc unless otherwise noted; full operating temperature range is -40°C to +100°C ambient
temperature with appropriate power derating. Specifications subject to change without notice.
Min.
Typ.
Max.
30
22
2250
2250
2250
100
125
18
12
9.5
8.6
0.9
290
2.0
0.8
270
0.47\24
470
23.760
24.000
+0.1
+0.1
22
9.8
8.9
15.8
360
3.0
30
Units
V
V
V
dc
V
dc
V
dc
°C
°C
V
V
V
V
V
A
mA
mA
V
mA
A
µH\µF
µF
V
%
%
mV
V
mV
mV
A
A
V
A
mA
µF
mV
µs
Notes & Conditions
Continuous
Continuous
Basic insulation, Pollution Degree 2
Input Voltage
Non-Operating
Operating
Isolation Voltage
Input to Output
Input to Base-Plate
Output to Base-Plate
Operating Temperature
Storage Temperature
Voltage at ON/OFF input pin
INPUT CHARACTERISTICS
-40
-55
-2
9
9.2
8.3
Operating Input Voltage Range
Input Under-Voltage Lockout
Turn-On Voltage Threshold
Turn-Off Voltage Threshold
Lockout Voltage Hysteresis
Maximum Input Current
No-Load Input Current
Disabled Input Current
Response to Input Transient
Input Terminal Ripple Current
Recommended Input Fuse
Input Filter Component Values (L\C)
Recommended External Input Capacitance
OUTPUT CHARACTERISTICS
25V transient for 100ms; see note 1
9 Vin, trim up, in current limit
250V/ms input transient
RMS
Fast acting external fuse recommended
Internal values; see Figure E
Typical ESR 0.1-0.2W
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
DYNAMIC CHARACTERISTICS
24.240
+0.3
+0.3
360
24.600
170
40.0
4
5.2
50
400
-360
23.400
0
4.4
0
84
19.0
4.8
14.0
0.15
15
Over sample, line, load, temperature & life
20MHz bandwidth; see note 2
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
Full load, Vout=90% nom.
-40°C to +125°C; Figure F
400 µF load capacitance, Iout = 0A
See Figure 1 for efficiency curve
See Figure 1 for efficiency curve
Output Voltage during Load Current Transient
For a Step Change in Output Current (0.06A/µs)
Settling Time
Turn-On Transient
Turn-On Time
Start-Up Inhibit Time
Output Voltage Overshoot
EFFICIENCY
1400
50
200
10
230
0
89.3
89.8
2250
2250
2250
250
ms
ms
%
%
%
V
dc
V
dc
V
dc
MW
pF
100% Load
50% Load
ISOLATION CHARACTERISTICS
Isolation Voltage (dielectric strength)
Input to Output
Input to Base-Plate
Output to Base-Plate
Isolation Resistance
Isolation Capacitance (input to output)
30
1,000
See note 3
Note 1: Start-up guaranteed above 10V, but will operate down to 9V.
Note 2: Output is terminated with 1 µF ceramic and 15 µF low-ESR tantalum capacitors (only 1µF ceramic for Vout > 18 V).
Note 3: Higher values of isolation capacitance can be added external to the module.
Product # IQ12240QTA04
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-IQ24004 Rev. A
4/6/07
Page 2
Technical Specification
ELECTRICAL CHARACTERISTICS (Continued)
Parameter
P
TEMPERATURE LIMITS FOR POWER DERATING CURVES
Input:
Output:
Current:
Package:
9-22 V
24.0 V
4A
Quarter-brick
Min.
Typ.
Max.
125
125
125
100
Units
°C
°C
°C
°C
kHz
V
V
V
kW
%
%
%
°C
°C
Notes & Conditions
Package rated to 150°C
UL rated max operating temp 130°C
See Figure 3 for derating curve
Applies to baseplated and encased units only
Regulation and Isolation stages
Semiconductor Junction Temperature
Board Temperature
Transformer Temperature
Maximum Baseplate Temperature, T
B
FEATURE CHARACTERISTICS
Switching Frequency
ON/OFF Control
Off-State Voltage
On-State Voltage
ON/OFF Control
Pull-Up Voltage
Pull-Up Resistance
Output Voltage Trim Range
Output Voltage Remote Sense Range
Output Over-Voltage Protection
Over-Temperature Shutdown
Over-Temperature Shutdown Restart Hysteresis
Load Current Scale Factor
RELIABILITY CHARACTERISTICS
230
2.4
-2
250
270
18
0.8
-20
117
5
50
122
125
10
190
2.5
1.8
Figures A & B
Measured across Pins 8 & 4; Figure C
Measured across Pins 8 & 4
Over full temp range; % of nominal Vout
Average PCB Temperature
See Output Load Current app. note on our web
+10
+10
127
Calculated MTBF (Telcordia)
Calculated MTBF (MIL-217)
Field Demonstrated MTBF
10
6
Hrs. TR-NWT-000332; 80% load,300LFM, 40oC Ta
10
6
Hrs. MIL-HDBK-217F; 80% load, 300LFM, 40oC Ta
10
6
Hrs. See our website for details
STANDARDS COMPLIANCE
Parameter
P
STANDARDS COMPLIANCE
Notes
File # E194341, Basic insulation & pollution degree 2
Certified by TUV
Test on entire assembly; board & plastic components UL94V-0 compliant
ESD test, 8kV - NP, 15kV air - NP (Normal Performance)
Section 7 - electrical safety, Section 9 - bonding/grounding
UL/cUL 60950-1
EN60950-1
72/23/EEC
93/68/EEC
Needle Flame Test (IEC 695-2-2)
IEC 61000-4-2
GR-1089-CORE
Telcordia (Bellcore) GR-513
• 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.
OPTIONS
SynQor provides various options for Pin Length and Feature Set for
this family of Power Interface Modules. Please consult the last page
for information on available options.
Product # IQ12240QTA04
Phone 1-888-567-9596
PATENTS
SynQor is protected under various patents. Please consult the last
page for further information.
www.synqor.com
Doc.# 005-IQ24004 Rev. A
4/6/07
Page 3
Technical Specification
100
95
90
14
12
Input:
Output:
Current:
Package:
9-22 V
24.0 V
4A
Quarter-brick
Power Dissipation (W)
10
8
6
4
2
0
9 Vin
12 Vin
22 Vin
Efficiency (%)
85
80
75
70
65
60
0
1
2
3
4
9 Vin
12 Vin
22 Vin
0
1
2
3
4
Load Current (A)
Load Current (A)
Figure 1:
Efficiency at nominal output voltage vs. load current for min-
imum, 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.
5
4
Iout (A)
3
2
400 LFM (2.0 m/s)
1
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
0
0
25
40
55
70
85
Ambient Air Temperature (°C)
Semiconductor junction temperature is
within 1°C of surface temperature
Figure 3:
Open frame converter maximum 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).
5
Figure 4:
Open frame converter thermal plot at 4 amp load current
(96 W) with 55
°
C air flowing at the rate of 200 LFM. Air flows across
the converter from pin 3 to pin 1 (nominal input voltage).
5
4
4
Iout (A)
2
400 LFM (2.0 m/s)
1
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
0
0
25
40
55
70
85
Iout (A)
3
3
2
400 LFM (2.0 m/s)
1
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
0
0
25
40
55
70
85
Ambient Air Temperature (°C)
Ambient Air Temperature (°C)
Figure 5:
Base-plated 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 pin 3 to pin 1 (nominal input voltage, T
B
=100ºC).
Product # IQ12240QTA04
Phone 1-888-567-9596
Figure 6:
Base-plated 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 pin 3 to pin 1 (nominal input voltage, T
B
=100ºC).
Doc.# 005-IQ24004 Rev. A
4/6/07
Page 4
www.synqor.com
Technical Specification
Input:
Output:
Current:
Package:
9-22 V
24.0 V
4A
Quarter-brick
Figure 7
:
Output voltage response to step-change in load current (50%-75%-50%
of Iout(max); dI/dt = 0.06 A/µ s). Load cap:
1
µ F ceramic cap. Ch 1: Vout (
2
V/div),
Ch 2: Iout (
2
A/div).
Figure 8:
Output voltage response to step-change in input voltage
(250 V/ms).
Load cap: 100 µ F, electrolytic output capacitance.
Ch 1: Vout
(1 V/div), Ch 2: Vin (10 V/div).
30
25
Output Voltage (V)
20
15
10
9 Vin
5
12 Vin
22 Vin
0
0
1
2
3
4
5
6
Load Current (A)
Figure 9:
Turn-on transient at full load (resistive load) (2 ms/div).
Input voltage pre-applied. Ch 1: Vout (10 V/div). Ch 2: ON/OFF input
(2 V/div).
Figure 10:
Output voltage vs. load current showing typical current limit
curves and converter shutdown points.
Product # IQ12240QTA04
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-IQ24004 Rev. A
4/6/07
Page 5
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