DQ63312QGL07PKT [SYNQOR]
Dual Output, High Efficiency, Isolated DC/DC Converter; 双输出，高效率，隔离式DC / DC转换器
| 型号： | DQ63312QGL07PKT |
| 厂家： | 
SYNQOR WORLDWIDE HEADQUARTERS |
| 描述： | Dual Output, High Efficiency, Isolated DC/DC Converter |
| 文件： | 总14页 (文件大小：813K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Technical Specification
Quarter
48V 3.3/1.2V
68W
out
in
Brick Dual
Dual Output, High Efficiency, Isolated DC/DC Converter
™
The DQ63312QGL07 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
DQ63312QGL07 Module
Operational Features
Protection Features
• Independently regulated outputs (separate control loops)
• High efficiency, 87% at full rated load current
• 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
• Delivers up to 68 Watts of output power with minimal
derating - no heatsink required
• Wide input voltage range: 35V – 75V, with 100V
100ms input voltage transient withstand
• Output over-voltage protection protects load from
damaging voltages
• Fixed frequency switching provides predictable EMI
• Thermal shutdown protects converter from abnor-
mal environmental conditions
performance
• No minimum load requirement means no preload resis-
tors required
Safety Features
Mechanical Features
• 2000V, 30 MΩ input-to-output isolation provides
• Industry standard pin-out configuration
• Industry standard size: 1.45” x 2.3”
input/output ground separation
• UL/cUL 60950 recognized (US & Canada), basic
insulation rating
• Low profile of only 0.34”, permits better airflow and
smaller card pitch
• TUV certified to EN60950
• Total weight: 1.1 oz (31 g), lower mass reduces
vibration and shock problems
• 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
Product # DQ63312QGL07
Phone 1-888-567-9596
Doc.# 005-2DQ312D Rev. B
10/7/03
Page 1
Technical Specification
Quarter
48V 3.3/1.2V
68W
out
in
Brick Dual
0.500
(12.7)
MECHANICAL
DIAGRAM
0.375
(9.53)
2.30
(58.4)
0.375
(9.53)
0.250
(6.35)
2.00
0.350
(8.89)
(50.8)
0.350
(8.89)
0.750
(19.05)
Top View
1.450
(36.83)
0.700
(17.78)
Pin far side
typical
QGA Option
0.424 (10.77)
max height
See Note 8
0.340 +.014
(8.64 +0.36)
Side View
Bottom side
Clearance
Lowest
Component
0.019+/-0.013
Load Board
(0.48+/-0.33)
0.145
(3.68)
QGA Option
0.076 (1.93)
min clearance
See Note 8
See Note 2
PIN CONNECTIONS
NOTES
1) All pins are 0.040” (1.02mm) diameter with
Pin No. Name
Function
0.080” (2.03 mm) diameter standoff shoulders.
1
2
Vin(+)
Positive input voltage
2) Other pin extension lengths available. Recommended pin
ON/OFF
TTL input to turn converter
on and off, referenced to
Vin(-), with internal pull up.
length is 0.03” (0.76mm) greater than the PCB thickness.
3) All Pins: Material - Copper Alloy
Finish - Tin/Lead over Nickel plate
3
4
5
A
6
7
Vin(-)
Negative input voltage
1.2V positive output voltage
Output Return
4) Undimensioned components are shown for visual
reference only.
1.2Vout(+)
OP RTN
2nd TRIM
TRIM
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
2nd Output voltage trim2
1
Output voltage trim
7) Workmanship: Meets or exceeds IPC-A-610C Class II
3.3Vout(+)
3.3V positive output voltage
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.
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.
Product # DQ63312QGL07
Phone 1-888-567-9596
Doc.# 005-2DQ312D Rev. B
10/7/03
Page 2
Technical Specification
Quarter
48V 3.3/1.2V
68W
out
in
Brick Dual
DQ63312QGL07 ELECTRICAL CHARACTERISTICS
TA=25°C, airflow rate=300 LFM, Vin=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.
Parameter
Min.
Typ.
Max.
Units Notes & Conditions
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Non-Operating
100
80
V
V
continuous
Operating
continuous
Operating Transient Protection
100
2000
100
125
18
V
100ms transient
Basic level, Pollution Degree 2
Isolation Voltage (input to output)
Operating Temperature
V
-40
-55
-2
°C
°C
V
Storage Temperature
Voltage at ON/OFF input pin
INPUT CHARACTERISTICS
Operating Input Voltage Range
Input Under-Voltage Lockout
Turn-On Voltage Threshold
35
48
75
V
32
28.5
2.5
33
29.5
3.5
34
30.5
4.5
2.7
80
V
V
Turn-Off Voltage Threshold
Lockout Hysteresis Voltage
V
Maximum Input Current
A
100% Load, 35 Vin
No-Load Input Current
60
2
mA
mA
Disabled Input Current
3
2
Inrush Current Transient Rating
Response to Input Transient
0.03
5
A s
mV
mA
A
1000V/ms input transient
Input Reflected-Ripple Current
Recommended Input Fuse
3
RMS thru 10µH inductor; Figs. 17 & 19
fast blow external fuse recommended
20
Input Filter Component Values (L\C)
Recommended External Input Capacitance
OUTPUT CHARACTERISTICS
Output Voltage Set Point (1.2V)
Output Voltage Set Point (3.3V)
Output Voltage Regulation (1.2V)
Over Line
4.7/1x2
47
µH\µF internal values, see Figure E
33
µF
see Figure 17
1.17
3.25
1.20
3.30
1.23
3.35
V
V
48Vin, 50% load on each voltage
48Vin, 50% load on each voltage
+
+
+
0.05 \ 2
1.3 \ 15
0.15 \ 5
2.5 \ 30
%\mV
%\mV
mV
+
Over Load
+
+
40
Over Temperature
25
Total Output Voltage Regulation (3.3V)
Over Line
+
+
+
+
0.05 \ 2
0.5 \ 17
0.15 \ 5
1.0 \ 33
%\mV
%\mV
mV
Over Load
+
+
Over Temperature
50
70
Total Output Voltage Range (1.2V)
Total Output Voltage Range (3.3V)
Output Voltage Ripple and Noise (1.2V & 3.3V)
Peak-to-Peak
1.13
3.18
1.27
V
over sample, line, load, temperature & life
over sample, line, load, temperature & life
20MHz bandwidth; Fig. 17 & 20
Full Load, see Figures 17 & 20
3.42
V
50
100
20
mV
mV
A
RMS
10
Full Load, see Figures 17 & 20
Operating Output Current Range (1.2V)
Operating Output Current Range (3.3V)
Output DC Current-Limit Inception (1.2V)
Output DC Current-Limit Inception (3.3V)
Short-Circuit Protection - redundant shutdown (1.2V)
Short-Circuit Protection - redundant shutdown (3.3V)
Output DC Current-Limit Shutdown Voltage (1.2V)
Output DC Current-Limit Shutdown Voltage (3.3V)
Back-Drive Current Limit while Enabled
Back-Drive Current Limit while Disabled
Maximum Output Capacitance (1.2V)
Maximum Output Capacitance (3.3V)
DYNAMIC CHARACTERISTICS
Input Voltage Ripple Rejection (1.2V \ 3.3V)
Output Voltage during Load Current Transient
Step Change in 1.2V Output Current (.1A/µs)
Step Change in 3.3V Output Current (.1A/µs)
Settling Time
0
15
0
15
A
15.2
15.2
17
17
19.4
19.4
A
Output Voltage 10% Low; Figs. 21-22
Output Voltage 10% Low; Figs. 21-22
Figures 23-24
A
17
A
17
A
Figures 23-24
0.6
1.0
1.0
10
V
V
A
Negative current drawn from output
Negative current drawn from output
1.2V at 15A resistive load
mA
mF
mF
10
10
3.3V at 15A resistive load
80\80
dB
120 Hz; Figs. 27-28
100
100
300
mV
mV
µs
50% to 75% to 50% Iout max; Figure 15
50% to 75% to 50% Iout max; Figure 16
to within 1% Vout nom
Turn-On Transient
Turn-On Time
6
200
0
12
ms
ms
%
Full load, Vout=90% nom.; Figs. 13 & 14
-40°C to +125°C; Figure F
Start-Up Inhibit Time
180
215
Output Voltage Overshoot
10mF load capacitance, Iout = 0A
EFFICIENCY
100% Load
87
%
%
48Vin, 100% load each Vout; Figs 1 - 6
48Vin, 50% load each Vout; Figs 1 - 6
50% Load
87.5
TEMPERATURE LIMITS FOR POWER DERATING CURVES
Semiconductor Junction Temperature
Board Temperature
125
125
125
°C
°C
°C
Package rated to 150°C
UL rated max operating temp 130°C
See Figures 7 - 12 for derating curves
Transformer Temperature
Product # DQ63312QGL07
Phone 1-888-567-9596
Doc.# 005-2DQ312D Rev. B
10/7/03
Page 3
Technical Specification
Quarter
48V 3.3/1.2V
68W
out
in
Brick Dual
ELECTRICAL CHARACTERISTICS (Continued)
Parameter
P
Min.
Typ.
Max.
Units Notes & Conditions
ISOLATION CHARACTERISTICS
Isolation Voltage
2000
30
V
Isolation Resistance
M
Ω
Isolation Capacitance
3300
290
pF
FEATURE CHARACTERISTICS
Switching Frequency
230
260
kHz
ON/OFF Control (Option P)
Off-State Voltage
-2
0.8
18
V
V
On-State Voltage
2.4
ON/OFF Control (Option N)
Off-State Voltage
2.4
-2
18
V
V
On-State Voltage
0.8
ON/OFF Control (Either Option)
Pull-Up Voltage
Figures A, B
Vin/6.5
40
9.2
V
Pull-Up Resistance
k
Ω
Output Voltage Trim Range
Output Over-Voltage Protection (1.2V)
Output Over-Voltage Protection (3.3V)
Over-Temperature Shutdown
Over-Temperature Shutdown Restart Hysteresis
RELIABILITY CHARACTERISTICS
Calculated MTBF (Telcordia)
Calculated MTBF (MIL-217)
Demonstrated MTBF
-10
111
111
+10
125
125
%
Trim-up pins 6-5, Trim-down pins 6-4; Fig D
Over full temp range
117
117
125
10
%
%
Over full temp range
°C
°C
Average PCB Temperature
106 Hrs. TR-NWT-000332; 80% load,300LFM, 40 C T
o
TBD
TBD
TBD
a
a
106 Hrs. MIL-HDBK-217F; 80% load, 300LFM, 40 C T
o
106 Hrs. Field demonstrated MTBF
STANDARDS COMPLIANCE
Parameter
P
Notes
STANDARDS COMPLIANCE
UL/cUL 60950
File # E194341, Basic insulation & pollution degree 2
Certified by TUV
EN60950
72/23/EEC
93/68/EEC
Needle Flame Test (IEC 695-2-2)
IEC 61000-4-2
test on entire assembly; board & plastic components UL94V-0 compliant
ESD test, 8kV - NP, 15kV air - NP
GR-1089-CORE
Section 7 - electrical safety, Section 9 - bonding/grounding
Telcordia (Bellcore) GR-513
•
An external input fuse must always be used to meet these safety requirements
QUALIFICATION TESTING
Parameter
P
# Units Test Conditions
QUALIFICATION TESTING
Life Test
32
95% rated Vin and load, units at derating point, 1000 hours
10-55Hz sweep, 0.060” total excursion,1 min./sweep, 120 sweeps for 3 axis
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
Toperating = min to max, Vin = min to max, full load, 100 cycles
Tmin-10°C to Tmax+10°C, 5°C steps, Vin = min to max, 0-105% load
85°C, 85% RH, 1000 hours, 2 minutes on and 6 hours off
MIL-STD-883, method 2003
Vibration
5
Mechanical Shock
Temperature Cycling
Power/Thermal Cycling
Design Marginality
Humidity
5
10
5
5
5
Solderability
15 pins
•
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
PATENTS
SynQor provides various options for Logic Sense, Pin Length and SynQor is protected under various patents, including but not lim-
Feature Set for this family of DC/DC converters. Please consult the ited to U.S. Patent # 5,999,417.
last page of this specification sheet for information on available
options.
Product # DQ63312QGL07
Phone 1-888-567-9596
Doc.# 005-2DQ312D Rev. B
10/7/03
Page 4
Performance Curves
Brick Dual
Quarter
48V 3.3/1.2V
68W
out
in
9
8
7
6
5
4
3
90
89
88
87
86
85
84
83
82
3.3Vo, 35Vin
1.2Vo, 35Vin
3.3Vo, 48Vin
1.2Vo, 48Vin
3.3Vo, 75Vin
1.2Vo, 75Vin
3.3Vo, 35Vin
1.2Vo, 35Vin
3.3Vo, 48Vin
1.2Vo, 48Vin
3.3Vo, 75Vin
1.2Vo, 75Vin
7
8
9
10
11
12
13
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.
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.
100
95
90
85
80
75
70
65
60
11
10
9
8
7
6
5
4
3
35 Vin
48 Vin
75 Vin
35 Vin
48 Vin
75 Vin
2
1
0
0
0
10
20
30
40
50
60
10
20
30
40
50
60
Total Output Power (W)
Total Output Power (W)
Figure 3: Overall converter efficiency vs. output power from zero load
Figure 4: Overall converter power dissipation vs. output power from
to full load at minimum, nominal, and maximum input voltage at 25
Both loads are equal and range from zero to full load.
°
C.
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.
89.0
88.5
88.0
87.5
87.0
86.5
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3.5
3.0
86.0
25 C
40 C
55 C
25 C
40 C
55 C
85.5
85.0
0
50
100
150
200
250
300
350
400
0
50
100
150
200
250
300
350
400
Airflow (LFM)
Airflow (LFM)
Figure 5: Overall converter efficiency at nominal output voltages and
Figure 6: Overall converter power dissipation at nominal output volt-
60% rated power on each output rail vs. airflow rate for ambient tem-
ages and 60% rated power on each output rail vs. airflow rate for
peratures of 25
°C, 40
°
C and 55
°
C (nominal input voltage).
ambient temperatures of 25°C, 40°C and 55°C (nominal input voltage).
Product # DQ63312QGL07
Phone 1-888-567-9596
Doc.# 005-2DQ312D Rev. B
10/7/03
Page 5
Performance Curves
Brick Dual
Quarter
48V 3.3/1.2V
68W
out
in
15
14
13
12
11
10
9
8
7
6
5
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
4
3
2
1
0
Semiconductor junction temperature is
within 1 C of surface temperature
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15
°
3.3V, Iout (A)
Figure 7: Maximum output power derating curves at 55
°C vs. airflow
Figure 8: Thermal plot of converter at 15A load on 1.2V ouput and 15A
rates of 100 through 400 LFM. Curve shows available current for 1.2V
rail on y axis and available current for 3.3V rail on x axis. (nom. Vin)
load on 3.3V output with 55°C air flowing at 200 LFM. Air flow across
the converter is from pin 1 to pin 3 (nominal input voltage).
15
14
13
12
11
10
9
8
7
6
5
400 LFM (2.0 m/s)
4
300 LFM (1.5 m/s)
3
2
1
0
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
Semiconductor junction temperature is
within 1°C of surface temperature
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15
3.3V, Iout (A)
Figure 9: Maximum output power derating curves at 70
°C vs. airflow
Figure 10: . Thermal plot of converter at 15A load on 1.2V ouput and
rates of 100 through 400 LFM. Curve shows available current for 1.2V
rail on y axis and available current for 3.3V rail on x axis. (nom. Vin)
13.5A load on 3.3V output with 70°C air flowing at 200 LFM. Air flow
across the converter is from pin 1 to pin 3 (nominal input voltage).
15
14
13
12
11
10
9
8
7
6
5
400 LFM (2.0 m/s)
4
300 LFM (1.5 m/s)
3
2
1
0
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
Semiconductor junction temperature is
within 1°C of surface temperature
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15
3.3V, Iout (A)
Figure 11: Maximum output power derating curves at 85
°C vs. airflow
Figure 12: Thermal plot of converter at 15A load on 1.2V ouput and
10.5A load on 3.3V output with 85 C air flowing at 200 LFM. Air flow
across the converter is from pin 1 to pin 3 (nominal input voltage).
rates of 100 through 400 LFM. Curve shows available current for 1.2V
rail on y axis and available current for 3.3V rail on x axis. (nom. Vin)
°
Product # DQ63312QGL07
Phone 1-888-567-9596
Doc.# 005-2DQ312D Rev. B 10/7/03
Page 6
Performance Curves
Brick Dual
Quarter
48V 3.3/1.2V
68W
out
in
Semiconductor junction temperature is
within 1 C of surface temperature
°
Figure 13: Turn-on transient at full rated load current (resistive load)
(10 ms/div). Ch 1: 1.2Vout (1V/div); Ch 2: 3.3Vout (1V/div)
Ch 3: ON/OFF input (5V/div)
Figure 14: Turn-on transient at zero load current (10 ms/div).
Ch 1: 1.2Vout (1V/div); Ch 2: 3.3Vout (1V/div)
Ch 3: ON/OFF input (5V/div)
1.2Vout
1.2Vout
1.2Iout
1.2Iout
3.3Vout
3.3Vout
3.3Iout
3.3Iout
Semiconductor junction temperature is
within 1°C of surface temperature
Figure 15: Output voltage response to step-change in Iout1 (50%-75%-50% of
Figure 16: Output voltage response to step-change in Iout2 (50%-75%-50% of
Imax; dI/dt = 0.1A/
µ
s). Load cap: 15
µ
F, 300 m
Ω
ESR tantalum & 1
µ
F ceramic.
Imax; dI/dt = 0.1A/µs). Load cap: 15µF, 300 mΩ ESR tantalum & 1µF ceramic.
Vout (100mV/div), Iout (10A/div). Ch1: Vout1; Ch2 Iout1; Ch 3: Vout2; Ch 4 Iout2
Vout (100mV/div), Iout (10A/div). Ch1: Vout1; Ch2 Iout2; Ch 3: Vout2; Ch 4 Iout2
Figure 19
10 µH
Figure 18
source
Figure 20
impedance
VOUT2
+
iS
iC
DC/DC
Converter
VOUT1
+
VSOURCE
15
µ
Ω
F,
ESR
1 µF
100 µF,
ceramic
300m
<1
Ω ESR
capacitors
tantalum
electrolytic
capacitor
capacitors
Semiconductor junction temperature is
within 1°C of surface temperature
COM (-)
Figure 17: Test set-up diagram showing measurement points for Input
Terminal Ripple Current (Figure 18), Input Reflected Ripple Current
(Figure 19) and Output Voltage Ripple (Figure 20).
Figure 18: Input Terminal Ripple Current, 1.2V & 3.3V outputs at full
rated output current and nominal input voltage with 10 H source
impedance and 100 F electrolytic capacitor (10 mA/div). (see Fig. 17)
µ
µ
Product # DQ63312QGL07
Phone 1-888-567-9596
Doc.# 005-2DQ312D Rev. B 10/7/03 Page 7
Performance Curves
Brick Dual
Quarter
48V 3.3/1.2V
68W
out
in
1.2Vout
3.3Vout
Figure 19: Input Reflected Ripple Current, i , through a 10
µ
H source
Figure 20: Output Voltage Ripple at nominal input voltage and rated
s
inductor at nominal input voltage and rated load current (5 mA/div).
1.2V and 3.3V outputs at full rated load current. (see Fig. 17)
load current on both outputs (20 mV/div). Load capacitance: 1µF
ceramic & 15
µF tantalum. Bandwidth: 20 MHz. (see Fig. 17)
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
2.0
1.5
1.0
35 V
35 V
48 V
75 V
0.5
48 V
75 V
0.0
0
0.0
5
10
15
20
0
5
10
15
20
Load Current (A)
Load Current (A)
Figure 21: Output voltage vs. load current showing typical current limit
curves and converter shutdown points for the 1.2V output. 3.3V load is
at 0A.
Figure 22: Output voltage vs. load current showing typical current limit
curves and converter shutdown points for the 3.3V output. 1.2V load is
at 0A.
Figure 23: Load current for 1.2V output (20A/div) as a function of time
Figure 24: Load current for 3.3V output (20A/div) as a function of time
when the converter attempts to turn on into a 10 m
Ω
short circuit.
when the converter attempts to turn on into a 10 m
Ω
short circuit.
Bottom trace is an expansion of the on-time portion of the top trace.
Product # DQ63312QGL07 Phone 1-888-567-9596
Bottom trace is an expansion of the on-time portion of the top trace.
Doc.# 005-2DQ312D Rev. B 10/7/03 Page 8
Performance Curves
Brick Dual
Quarter
48V 3.3/1.2V
68W
out
in
0.1
0.1
0.01
35 Vin
48 Vin
75 Vin
35 Vin
48 Vin
75 Vin
0.01
0.001
0.001
10
10
100
1,000
Hz
10,000
100,000
100
1,000
Hz
10,000
100,000
Figure 25: Output impedance (Z
= V
/I
) for minimum,
Figure 26: Output impedance (Z
= V /I ) for minimum,
out2 out2
out1
out1 out1
out2
nominal, and maximum input voltage at full rated power, for 1.2V out-
nominal, and maximum input voltage at full rated power, for 3.3V out-
put.
put.
-30
-40
-50
-30
-40
-50
-60
-60
35 Vin
48 Vin
35 Vin
48 Vin
-70
-70
75 Vin
75 Vin
-80
-80
-90
-100
-110
-90
-100
-110
10
100
1,000
Hz
10,000
100,000
10
100
1,000
Hz
10,000
100,000
Figure 27: Forward Transmission (FT = V
/V ) for minimum,
Figure 28: Forward Transmission (FT = V
/V ) for minimum,
out2 in
1
out1 in
2
nominal, and maximum input voltage at full rated power, for 1.2V out-
nominal, and maximum input voltage at full rated power, for 3.3V out-
put.
put.
-20
-25
-30
-35
-10
-15
-20
-25
-30
-40
-45
-50
-55
-60
-65
35 Vin
48 Vin
75 Vin
35 Vin
48 Vin
75 Vin
-35
-40
-45
-50
-55
-60
10
100
1,000
Hz
10,000
100,000
10
100
1,000
Hz
10,000
100,000
Figure 29: Reverse Transmission (RT = I /I
) for minimum, nomi-
nal, and maximum input voltage at full rated power, for 1.2V output.
Figure 30: Reverse Transmission (RT = I /I
) for minimum, nomi-
1
in out1
2
in out2
nal, and maximum input voltage at full rated power, for 3.3V output.
Product # DQ63312QGL07
Phone 1-888-567-9596
Doc.# 005-2DQ312D Rev. B
10/7/03
Page 9
Performance Curves
Brick Dual
Quarter
48V 3.3/1.2V
68W
out
in
100
100
10
1
10
1
35 Vin
48 Vin
75 Vin
35 Vin
48 Vin
75 Vin
0.1
10
0.1
100
1,000
Hz
10,000
100,000
10
100
1,000
Hz
10,000
100,000
Figure 31: Input impedance (Z = V /I ) for minimum, nominal, and
in in in
Figure 32: Input impedance (Z = V /I ) for minimum, nominal, and
in in in
maximum input voltage at full rated power for 1.2V output.
maximum input voltage at full rated power for 3.3V output.
Product # DQ63312QGL07
Phone 1-888-567-9596
Doc.# 005-2DQ312D Rev. B
10/7/03
Page 10
Technical Specification
Quarter
48V 3.3/1.2V
68W
out
in
Brick Dual
The DualQor has many standard control and protection fea-
tures. All shutdown features are non-latching, meaning that
the converter shuts off for 200 ms before restarting. (See
Figure F)
BASIC OPERATION AND FEATURES
The DualQor series converter uses a two-stage power circuit
topology in which the two output voltages are cross regulated.
The first stage is a buck-converter that keeps the output voltage
constant over variations in line, load, and temperature. The sec-
ond stage uses a transformer to provide the functions of
input/output isolation and voltage step-down to achieve the low
output voltage required.
CONTROL FEATURES
REMOTE ON/OFF (Pin 2): The ON/OFF input, Pin 2, per-
mits the user to control when the converter is on or off. This
input is referenced to the return terminal of the input bus,
Vin(-). There are two versions of the converter that differ by the
sense of the logic used for the ON/OFF input.
The two-stage solution is ideal for converters with multiple cross-
regulated output voltages. The first-stage compensates for any
variations in line voltage. Therefore, the dependence of the
output voltage on line variations is minimized.
In the positive logic version, the ON/OFF input is active high
(meaning that a high turns the converter on). In the negative
logic version, the ON/OFF signal is active low (meaning that a
low turns the converter on). Figure A details five possible cir-
cuits for driving the ON/OFF pin. Figure B is a detailed look of
the internal ON/OFF circuitry.
Both the first stage and the second stage switch at a fixed fre-
quency for predictable EMI performance. Rectification of the
transformer’s output is accomplished with synchronous recti-
fiers. 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 DualQor series of converters
has such high efficiency, even at very low output voltages and
very high output currents.
OUTPUT VOLTAGE TRIM (Pin 6): The TRIM input permits
the user to adjust the output voltage up or down according to
the trim range specifications. It is important to recognize that
adjusting one output will also adjust the second output propor-
tionally. To lower the output voltage, the user should connect a
resistor between Pin 6 and Pin 4. To raise the output voltage,
the user should connect a resistor between Pin 6 and Pin 5. The
following table shows the resistor values needed to trim the out-
put voltage up or down.
Dissipation throughout the converter is so low that it does not
require a heatsink for operation. However, baseplated ver-
sions are available for optional heatsinking in severe ther-
mal environments.
The DualQor series converter uses the industry standard
footprint and pin-out configuration.
Vo(%)
1
2
3
4
5
6
7
8
9
10
0
0
Rup
54.9 24.9 14.3 9.31 6.34 4.32 2.80 1.69 0.83
Rdown 68.1 30.1 17.8 11.5 7.68 5.36 3.48 2.10 1.05
ON/OFF
ON/OFF
ON/OFF
_
_
_
Vin( )
Vin( )
Vin( )
Vin(+)
5V
Positive Logic
(Permanently Enabled)
Negative Logic
(Permanently Enabled)
Remote Enable Circuit
274k
5V
ON/OFF
ON/OFF
50k
TTL
TTL/
CMOS
ON/OFF
100pF
50k
_
Vin( )
_
_
Vin( )
Vin( )
Open Collector Enable Circuit
Direct Logic Drive
Figure A: Various circuits for driving the ON/OFF pin.
Figure B: Internal ON/OFF pin circuitry
Product # DQ63312QGL07
Phone 1-888-567-9596
Doc.# 005-2DQ312D Rev. B
10/7/03
Page 11
Technical Specification
Quarter
48V 3.3/1.2V
68W
out
in
Brick Dual
Resistor values in Kohms for the desired increase/decrease
(typical) in output voltage (%)
excessive heating of the converter or the load board.
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 dam-
age 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 cur-
rent limit condition. Load capacitance determines exactly how
high the output voltage will rise in response to these conditions.
After 200 ms the converter will automatically restart.
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.
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.
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
Over-Temperature 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.
PROTECTION FEATURES
Input Under-Voltage Lockout: The converter is designed
to turn off when the input voltage is too low, helping avoid an
input system instability problem, described in more detail in the
application note titled “Input System Instability”. The lockout cir-
cuitry is a comparator with DC hysteresis. When the input volt-
age is rising, it must exceed the typical Turn-On Voltage
Threshold value (listed on the specification page) before the
converter will turn on. Once the converter is on, the input volt-
age must fall below the typical Turn-Off Voltage Threshold value
before the converter will turn off.
APPLICATION CONSIDERATIONS
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 web site
(www.synqor.com) which provides an understanding of why
this instability arises, and shows the preferred solution for cor-
recting it.
Output Current Limit: The maximum current limit remains
constant as the output voltage drops. However, once the imped-
ance of the short across the output is small enough to make the
output voltage drop below the specified Output DC Current-
Limit Shutdown Voltage, the converter turns off.
Application Circuits: Figure D below provides a typical cir-
cuit diagram which details the input filtering and voltage trim-
ming.
The converter then enters a “hiccup mode” where it repeatedly
turns on and off at a 5 Hz (nominal) frequency with a 5% duty
cycle until the short circuit condition is removed. This prevents
Vin(+)
3.3 Vout(+)
Iload
Rtrim-up
Electrolytic
Capacitor
Trim
Cload
33µF
External
Input
ESR
1Ω
Vin
OP RTN
ON/OFF
Filter
or
Rtrim-down
Cload
_
Iload
1.8 Vout(+)
Vin( )
Figure D: Typical application circuit (negative logic unit, permanently enabled).
Product # DQ63312QGL07
Phone 1-888-567-9596
Doc.# 005-2DQ312D Rev. B
10/7/03
Page 12
Technical Specification
Quarter
48V 3.3/1.2V
68W
out
in
Brick Dual
Input Filtering and External Capacitance: Figure E pro-
vides a diagram showing the internal input filter components.
This filter dramatically reduces input terminal ripple current,
which otherwise could exceed the rating of an external elec-
trolytic input capacitor. The recommended external input
capacitance is specified in the “Input Characterisitcs” section.
More detailed information is available in the application note
titled “EMI Characteristics” on the SynQor website.
L
Vin(+)
C1
C2
_
Vin( )
Figure E: Internal Input Filter Diagram (values listed on page 3).
Figure F shows three turn-on scenarios, where a Startup Inhibit
Period is initiated at t0, t1, and t2:
Startup Inhibit Period: The Startup Inhibit Period ensures
that the converter will remain off for at least 200ms when it is
shut down for any reason. When an output short is present,
this generates a 5Hz "hiccup mode," which prevents the con-
verter from overheating. In all, there are seven ways that the
converter can be shut down, initiating a Startup Inhibit Period:
Before time t0, when the input voltage is below the UVL thresh-
old, the unit is disabled by the Input Under-Voltage Lockout fea-
ture. When the input voltage rises above the UVL threshold, the
Input Under-Voltage Lockout is released, and a Startup Inhibit
Period is initiated. At the end of this delay, the ON/OFF pin is
evaluated, and since it is active, the unit turns on.
• Input Under-Voltage Lockout
• Input Over-Voltage Shutdown (not present in Quarter-brick)
• Output Over-Voltage Protection
• Over Temperature Shutdown
• Current Limit
At time t1, the unit is disabled by the ON/OFF pin, and it can-
not be enabled again until the Startup Inhibit Period has
elapsed.
When the ON/OFF pin goes high after t2, the Startup Inhibit
• Short Circuit Protection
Period has elapsed, and the output turns on within the typical
Turn-On Time.
• Turned off by the ON/OFF input
V
in
Under-Voltage
Lockout Turn-On
Threshold
ON/OFF
(pos logic)
ON
OFF
ON
OFF
ON
4ms (typical
turn on time)
V
out
200ms
(typical start-up
inhibit period)
200ms
200ms
t
t0
t1
t2
Figure F: Startup Inhibit Period (turn-on time not to scale)
Product # DQ63312QGL07
Phone 1-888-567-9596
Doc.# 005-2DQ312D Rev. B
10/7/03
Page 13
Technical Specification
Quarter
48V 3.3/1.2V
68W
out
in
Brick Dual
ORDERING INFORMATION
PART NUMBERING SYSTEM
Refer to the website for the most current list of 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 con-
sisting of the 12 character base part number and the addi-
tional 3 characters for options.
The part numbering system for SynQor’s DualQor DC/DC
converters follows the format shown in the example below.
DQ 6 33 12 Q G L 07 N K S
Options (see
Ordering Information)
Output Power
Thermal Design
Output Max Output
Model Number
Input Voltage
Voltages
3.3/1.2 V
3.3/1.5 V
3.3/1.5 V
3.3/1.8 V
3.3/2.5 V
5.0/3.3 V
3.3/1.2 V
3.3/1.5 V
3.3/1.5 V
3.3/1.8 V
3.3/2.5 V
5.0/3.3 V
Power
68 W
72 W
80 W
77 W
87 W
100 W
68 W
72 W
80 W
77 W
87 W
100 W
Performance Level
Package Size
DQ63312QGL07xyz
DQ63315QGL07xyz
DQ63315QGL08xyz
DQ63318QGL08xyz
DQ63325QGL09xyz
DQ65033QGL10xyz
DQ63315QGA07xyz
DQ63315QGA08xyz
DQ63318QGA08xyz
DQ63325QGA09xyz
DQ65033QGA10xyz
35 - 75 V
35 - 75 V
35 - 75 V
35 - 75 V
35 - 75 V
35 - 75 V
35 - 75 V
35 - 75 V
35 - 75 V
35 - 75 V
35 - 75 V
35 - 75 V
Output Voltage 2
Output Voltage 1
Input Voltage
Product Family
The first 12 characters comprise the base part number and
the last 3 characters indicate available options. Although
there are no default values for options, the most common
options are negative logic, 0.145” pins and standard fea-
ture set. These part numbers are more likely to be readily
available in stock for evaluation and prototype quantities.
Modules listed above with QGA in part number have an
increased bottom side board clearance and a slightly larg-
er total height (see page 2 for dimensions). There are no
other differences from the QGL units.
Application Notes
A variety of application notes and technical white papers
can be downloaded in pdf format at www.synqor.com.
The following option choices must be included in the last
three places of the model number.
Options Description
Enable
Logic
Pin
Feature
Set
Length
K - 0.110"
P - Positive N - 0.145"
N - Negative R - 0.180" T - 2nd Trim pin
Y - 0.250"
S - Standard
Contact SynQor for further information:
Warranty
SynQor offers a three (3) year limited warranty. Complete warranty
information is listed on our web site or is available upon request from
SynQor.
Phone:
Toll Free: 888-567-9596
Fax:
508-485-8434
508-485-8414
E-mail:
Web:
sales@synqor.com
www.synqor.com
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.
Address: 188 Central Street
Hudson, MA 01749
Product # DQ63312QGL07
Phone 1-888-567-9596
Doc.# 005-2DQ312D Rev. B
10/7/03
Page 14
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