Technical Specification
Brick Dual
48Vin 3.3/1.8Vout 77W
Quarter
Dual Output, High Efficiency, Isolated DC/DC Converter
The DQ63318QGL08 DualQor
™
series is an indepen-
dently regulated dual output converter that uses the
industry standard quarter brick package size. The very
high efficiency is a result of SynQor’s patented topology
that uses synchronous rectification and an innovative
construction design to minimize heat dissipation and
allow extremely high power densities. The power dissi-
pated by the converter is so low that a heatsink is not
required, which saves cost, weight, height, and applica-
tion effort. All of the power and control components
are mounted to the multi-layer PCB substrate with high-
yield surface mount technology, resulting in a more reli-
able product.
Dual Output
DQ63318QGL08 Module
Operational Features
• Independently regulated outputs
(separate control loops)
• High efficiency, >87% at full rated load current
• Delivers up to 77 Watts of output power with minimal
derating - no heatsink required
• Wide input voltage range: 35V – 75V, with 100V
100ms input voltage transient withstand
• Fixed frequency switching provides predictable EMI
performance
• No minimum load requirement means no preload resis-
tors required
Protection Features
• Input under-voltage lockout disables converter at
low input voltage conditions
• Output current limit and short circuit protection
protects converter from excessive load current or
short circuits
• Output over-voltage protection protects load from
damaging voltages
• Thermal shutdown protects converter from abnor-
mal environmental conditions
Mechanical Features
• Industry standard pin-out configuration
• Industry standard size: 1.45” x 2.3”
• Low profile of only 0.34”, permits better airflow and
smaller card pitch
• Total weight: 1.1 oz (31 g), lower mass reduces
vibration and shock problems
Safety Features
• 2000V, 30 MΩ input-to-output isolation provides
input/output ground separation
• UL/cUL 60950 recognized (US & Canada), basic
insulation rating
• TUV certified to EN60950
• 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 flam-
mability requirements
Control Features
• On/Off control referenced to input side (positive
and negative logic options are available)
• Output voltage trim: +10%/-10%, permits custom
voltages and voltage margining. Optional sec-
ond trim pin allows independent trimming.
Product # DQ63318QGL08
Phone 1-888-567-9596
Doc.# 005-2DQ638D Rev. B
10/7/03
Page 1
Technical Specification
Brick Dual
48Vin 3.3/1.8Vout 77W
0.500
Quarter
MECHANICAL
DIAGRAM
0.350
(8.89)
(12.7)
2.30
0.375
(9.53)
(58.4)
0.375
0.250
(6.35)
(9.53)
2.00
(50.8)
0.350
(8.89)
Top View
0.750
(19.05)
1.450
(36.83)
0.700
(17.78)
Pin far side
typical
Side View
Bottom side
Clearance
0.340 +.014
(8.64 +0.36)
QGA Option
0.424 (10.77)
max height
See Note 8
0.019+/-0.013
(0.48+/-0.33)
Lowest
Component
Load Board
0.145
(3.68)
See Note 2
QGA Option
0.076 (1.93)
min clearance
See Note 8
NOTES
1) All pins are 0.040” (1.02mm) diameter with
0.080” (2.03 mm) diameter standoff shoulders.
2) Other pin extension lengths available. Recommended pin
length is 0.03” (0.76mm) greater than the PCB thickness.
3) All Pins: Material - Copper Alloy
Finish - Tin/Lead over Nickel plate
4) Undimensioned components are shown for visual
reference only.
5) All dimensions in inches (mm)
Tolerances: x.xx +/-0.02 in. (x.x +/-0.5mm)
x.xxx +/-0.010 in. (x.xx +/-0.25mm)
6) Weight: 1.1 oz. (31 g) typical
7) Workmanship: Meets or exceeds IPC-A-610C Class II
8) Modules can be ordered as QGA option that have different
pins to provide a minimum bottom side clearance of
0.076” while increasing maximum height to 0.424”.
See ordering page for more information.
PIN CONNECTIONS
Pin No.
1
2
3
4
5
Name
Vin(+)
ON/OFF
Vin(-)
1.8Vout(+)
OP RTN
Function
Positive input voltage
TTL input to turn converter
on and off, referenced to
Vin(-), with internal pull up.
Negative input voltage
1.8V positive output voltage
Output Return
A
6
7
2nd TRIM
TRIM
3.3Vout(+)
2nd Output voltage trim
Output voltage trim
1
3.3V positive output voltage
2
Pins in Italics Shaded text are Optional
NOTES
1. For Standard feature unit (S feature), one trim pin (pin 6) trims both outputs
simultaneously by the same amount in the same direction.
2. For units with optional trim pin (T feature), the original trim pin (pin 6)
trims the low voltage output and the optional trim pin (pin A) trims the high
voltage output. Both trim independently of one other.
Doc.# 005-2DQ638D Rev. B
10/7/03
Page 2
Product # DQ63318QGL08
Phone 1-888-567-9596
Technical Specification
Brick Dual
48Vin 3.3/1.8Vout 77W
T
A
=25°C, airflow rate=300 LFM, V
in
=48Vdc 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.
Quarter
DQ63318QGL08 ELECTRICAL CHARACTERISTICS
Parameter
ABSOLUTE MAXIMUM RATINGS
Min.
Typ.
Max.
100
80
100
2000
100
125
18
Units
V
V
V
V
°C
°C
V
V
V
V
V
A
mA
mA
A
2
s
mV
mA
A
µH\µF
µF
V
V
%\mV
%\mV
mV
%\mV
%\mV
mV
V
V
mV
mV
A
A
A
A
A
A
V
V
A
mA
mF
mF
dB
mV
mV
µs
Notes & Conditions
continuous
continuous
100ms transient
Basic level, Pollution Degree 2
Input Voltage
Non-Operating
Operating
Operating Transient Protection
Isolation Voltage (input to output)
Operating Temperature
Storage Temperature
Voltage at ON/OFF input pin
Operating Input Voltage Range
Input Under-Voltage Lockout
Turn-On Voltage Threshold
Turn-Off Voltage Threshold
Lockout Hysteresis Voltage
Maximum Input Current
No-Load Input Current
Disabled Input Current
Inrush Current Transient Rating
Response to Input Transient
Input Reflected-Ripple Current
Recommended Input Fuse
Input Filter Component Values (L\C)
Recommended External Input Capacitance
Output Voltage Set Point (1.8V)
Output Voltage Set Point (3.3V)
Output Voltage Regulation (1.8V)
Over Line
Over Load
Over Temperature
Total Output Voltage Regulation (3.3V)
Over Line
Over Load
Over Temperature
Total Output Voltage Range (1.8V)
Total Output Voltage Range (3.3V)
Output Voltage Ripple and Noise (1.8V & 3.3V)
Peak-to-Peak
RMS
Operating Output Current Range (1.8V)
Operating Output Current Range (3.3V)
Output DC Current-Limit Inception (1.8V)
Output DC Current-Limit Inception (3.3V)
Short-Circuit Protection - redundant shutdown (1.8V)
Short-Circuit Protection - redundant shutdown (3.3V)
Output DC Current-Limit Shutdown Voltage (1.8V)
Output DC Current-Limit Shutdown Voltage (3.3V)
Back-Drive Current Limit while Enabled
Back-Drive Current Limit while Disabled
Maximum Output Capacitance (1.8V)
Maximum Output Capacitance (3.3V)
-40
-55
-2
35
32
28.5
2.5
48
33
29.5
3.5
60
2
3
33
1.76
3.26
4.7\1x2
47
1.80
3.30
INPUT CHARACTERISTICS
75
34
30.5
4.5
3
80
3
0.03
5
20
100% Load, 35 Vin
1000V/ms input transient
RMS thru 10µH inductor; Figs. 17 & 19
fast blow external fuse recommended
internal values, see Figure E
see Figure 17
48Vin, 50% load on each voltage
48Vin, 50% load on each voltage
OUTPUT CHARACTERISTICS
1.84
3.34
+0.05 \ 2 +0.15 \ 5
+0.8 \ 15 +1.7 \ 30
+50
+30
+0.05 \ 2 +0.15 \ 5
+0.5 \ 17 +1.0 \ 33
+70
+50
1.88
3.41
50
10
17
17
17
17
0.6
1.0
1.0
10
100
20
15
15
19.4
19.4
1.72
3.19
0
0
15.2
15.2
over sample, line, load, temperature & life
over sample, line, load, temperature & life
20MHz bandwidth; Fig. 17 & 20
Full Load, see Figures 17 & 20
Full Load, see Figures 17 & 2
Output Voltage 10% Low; Figs. 21-22
Output Voltage 10% Low; Figs. 21-22
Figures 23-24
Figures 23-24
Negative current drawn from output
Negative current drawn from output
1.8V at 15A resistive load
3.3V at 15A resistive load
120 Hz; Figs. 27-28
50% to 75% to 50% Iout max; Figure 15
50% to 75% to 50% Iout max; Figure 16
to within 1% Vout nom
Full load, Vout=90% nom.; Figs. 13 & 14
-40°C to +125°C; Figure F
10mF load capacitance, Iout = 0A
48Vin, 100% load each Vout; Figs 1 - 6
48Vin, 50% load each Vout; Figs 1 - 6
Package rated to 150°C
UL rated max operating temp 130°C
See Figures 7 - 12 for derating curves
10/7/03
Page 3
10
10
DYNAMIC CHARACTERISTICS
Input Voltage Ripple Rejection (1.8V \ 3.3V)
Output Voltage during Load Current Transient
Step Change in 1.8V Output Current
(.1A/µs)
Step Change in 3.3V Output Current
(.1A/µs)
Settling Time
Turn-On Transient
Turn-On Time
Start-Up Inhibit Time
Output Voltage Overshoot
100% Load
50% Load
Semiconductor Junction Temperature
Board Temperature
Transformer Temperature
80\80
100
100
300
180
6
200
0
87.5
87.5
125
125
125
12
215
ms
ms
%
%
%
°C
°C
°C
EFFICIENCY
TEMPERATURE LIMITS FOR POWER DERATING CURVES
Product # DQ63318QGL08
Phone 1-888-567-9596
Doc.# 005-2DQ638D Rev. B
Technical Specification
Brick Dual
48Vin 3.3/1.8Vout 77W
ELECTRICAL CHARACTERISTICS (Continued)
Parameter
P
ISOLATION CHARACTERISTICS
Quarter
Min.
Typ.
2000
30
3300
Max.
Units
V
M
Ω
pF
Notes & Conditions
Isolation Voltage
Isolation Resistance
Isolation Capacitance
FEATURE CHARACTERISTICS
Switching Frequency
ON/OFF Control (Option P)
Off-State Voltage
On-State Voltage
ON/OFF Control (Option N)
Off-State Voltage
On-State Voltage
ON/OFF Control (Either Option)
Pull-Up Voltage
Pull-Up Resistance
Output Voltage Trim Range
Output Over-Voltage Protection (1.8V)
Output Over-Voltage Protection (3.3V)
Over-Temperature Shutdown
Over-Temperature Shutdown Restart Hysteresis
Calculated MTBF (Telcordia)
Calculated MTBF (MIL-217)
Demonstrated MTBF
230
-2
2.4
2.4
-2
260
290
0.8
18
18
0.8
kHz
V
V
V
V
V
kΩ
%
%
%
°C
°C
-10
111
111
Vin/6.5
40
117
117
125
10
TBD
TBD
TBD
9.2
+10
125
125
Figures A, B
Trim-up pins 6-5, Trim-down pins 6-4; Fig D
Over full temp range
Over full temp range
Average PCB Temperature
RELIABILITY CHARACTERISTICS
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. Field demonstrated MTBF
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
Section 7 - electrical safety, Section 9 - bonding/grounding
UL/cUL 60950
EN60950
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
QUALIFICATION TESTING
Parameter
P
QUALIFICATION TESTING
# Units
32
5
5
10
5
5
5
15 pins
Test Conditions
10-55Hz sweep, 0.060” total excursion,1 min./sweep, 120 sweeps for 3 axis
Life Test
Vibration
Mechanical Shock
Temperature Cycling
Power/Thermal Cycling
Design Marginality
Humidity
Solderability
95% rated V
in
and load, units at derating point, 1000 hours
100g minimum, 2 drops in x and y axis, 1 drop in z axis
-40°C to 100°C, unit temp. ramp 15°C/min., 500 cycles
T
operating
= min to max, V
in
= min to max, full load, 100 cycles
T
min
-10°C to T
max
+10°C, 5°C steps, V
in
= min to max, 0-105% load
85°C, 85% RH, 1000 hours, 2 minutes on and 6 hours off
MIL-STD-883, method 2003
•
Extensive characterization testing of all SynQor products and manufacturing processes is performed to ensure that we supply
robust, reliable product. Contact factory for more information about Proof of Design and Proof of Manufacturing processes.
OPTIONS
SynQor provides various options for Logic Sense, Pin Length and
Feature Set for this family of DC/DC converters. Please consult the
last page of this specification sheet for information on available
options.
Product # DQ63318QGL08
Phone 1-888-567-9596
PATENTS
SynQor is protected under various patents, including but not lim-
ited to U.S. Patent # 5,999,417.
Doc.# 005-2DQ638D Rev. B
10/7/03
Page 4
Performance Curves
Brick Dual
48Vin 3.3/1.8Vout 77W
90
89
88
10
9
Quarter
Power Dissipation (W)
Efficiency (%)
8
7
6
5
4
87
86
85
84
83
7
8
9
10
11
12
13
3.3Vo,
1.8Vo,
3.3Vo,
1.8Vo,
3.3Vo,
1.8Vo,
35Vin
35Vin
48Vin
48Vin
75Vin
75Vin
3.3Vo,
1.8Vo,
3.3Vo,
1.8Vo,
3.3Vo,
1.8Vo,
35Vin
35Vin
48Vin
48Vin
75Vin
75Vin
14
15
7
8
9
10
11
12
13
14
15
Load Current (A)
Load Current (A)
Figure 1:
Efficiency vs. output current, from half load to full load on
each output voltage at minimum, nominal, and maximum input voltage
at 25
°
C. Output not under test is held constant at half load.
100
95
Figure 2:
Power dissipation vs. output current, from half load to full
load on each output voltage at minimum, nominal, and maximum input
voltage at 25
°
C. Output not under test is held constant at half load.
12
11
10
Power Dissipation (W)
90
9
8
7
6
5
4
3
2
1
0
0
10
20
30
40
50
60
35 Vin
48 Vin
75 Vin
70
Efficiency (%)
85
80
75
70
65
60
0
10
20
30
40
50
60
70
35 Vin
48 Vin
75 Vin
Total Output Power (W)
Total Output Power (W)
Figure 3:
Overall converter efficiency vs. output power from zero load
to full load at minimum, nominal, and maximum input voltage at 25
°
C.
Both loads are equal and range from zero to full load.
90.0
89.5
Figure 4:
Overall converter power dissipation vs. output power from
zero load to full load at minimum, nominal, and maximum input voltage
at 25
°
C. Both loads are equal and range from zero to full load.
8.0
7.5
Power Dissipation (W)
89.0
7.0
6.5
6.0
5.5
5.0
4.5
4.0
25 C
40 C
55 C
Efficiency (%)
88.5
88.0
87.5
87.0
86.5
86.0
0
50
100
150
200
250
300
350
400
25 C
40 C
55 C
0
50
100
150
200
250
300
350
400
Airflow (LFM)
Airflow (LFM)
Figure 5:
Overall converter efficiency at nominal output voltages and
60% rated power on each output rail vs. airflow rate for ambient tem-
peratures of 25
°
C, 40
°
C and 55
°
C (nominal input voltage).
Product # DQ63318QGL08
Phone 1-888-567-9596
Figure 6:
Overall converter power dissipation at nominal output volt-
ages and 60% rated power on each output rail vs. airflow rate for
ambient temperatures of 25
°
C, 40
°
C and 55
°
C (nominal input voltage).
Doc.# 005-2DQ638D Rev. B
10/7/03
Page 5
