Technical Specification
Brick Dual
48Vin 3.3/1.2Vout 68W
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
DQ63312QGL07 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 (1.2V)
Output Voltage Set Point (3.3V)
Output Voltage Regulation (1.2V)
Over Line
Over Load
Over Temperature
Total Output Voltage Regulation (3.3V)
Over Line
Over Load
Over Temperature
Total Output Voltage Range (1.2V)
Total Output Voltage Range (3.3V)
Output Voltage Ripple and Noise (1.2V & 3.3V)
Peak-to-Peak
RMS
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)
-40
-55
-2
35
32
28.5
2.5
48
33
29.5
3.5
60
2
3
33
1.17
3.25
4.7/1x2
47
1.20
3.30
INPUT CHARACTERISTICS
75
34
30.5
4.5
2.7
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
1.23
3.35
+0.05 \ 2 +0.15 \ 5
+1.3 \ 15 +2.5 \ 30
+40
+25
+0.05 \ 2 +0.15 \ 5
+0.5 \ 17 +1.0 \ 33
+70
+50
1.27
3.42
50
10
17
17
17
17
0.6
1.0
1.0
10
100
20
15
15
19.4
19.4
1.13
3.18
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 & 20
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
1.2V 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 (1.2V \ 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
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
87.5
125
125
125
12
215
ms
ms
%
%
%
°C
°C
°C
EFFICIENCY
TEMPERATURE LIMITS FOR POWER DERATING CURVES
Product # DQ63312QGL07
Phone 1-888-567-9596
Doc.# 005-2DQ312D Rev. B
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