Input:
Outputs:
Current:
Package:
35-75V
5.0V & 3.3V
40W
Quarter-brick
Technical Specification
DQ65033QKA04 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 tem-
perature 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, square wave
Basic insulation, 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
V
V
Turn-Off Voltage Threshold
Lockout Voltage Hysteresis
V
Maximum Input Current
1.7
A
100% Load, 35 Vin
No-Load Input Current
50
mA
mA
Disabled Input Current
2.0
2
Inrush Current Transient Rating
Input Reflected Ripple Current
Input Terminal Ripple Current
Recommended Input Fuse
0.01
20
A s
mA
mA
A
p-p thru 10µH inductor; Figures 23 & 25
RMS; Figures 23 & 24
100
20
fast blow external fuse recommended
Input Filter Component Values (C\L)
Recommended External Input Capacitance
OUTPUT CHARACTERISTICS
Output Voltage Set Point (3.3V)
Output Voltage Set Point (5.0V)
Total Output Voltage Regulation (3.3V)
Total Output Voltage Regulation (5.0V)
Output Voltage Ripple and Noise (3.3V & 5.0V)
Peak-to-Peak
2.0\4.7
47
µF\µH internal values, see Figure E
µF
Typical ESR 0.1-0.2Ω, see Figure 23
3.30
5.00
V
V
V
V
48Vin, 50% load on each voltage
48Vin, 50% load on each voltage
cross regulation, line, load, temp; Figures 7-10
cross regulation, line, load, temp; Figures 7-10
20MHz bandwidth; Figures 23 & 26
Full Load, see Figures 23 & 26
3.20
4.80
3.40
5.20
1
50
10
100
20
12
8
mV
mV
A
RMS
Full Load, see Figures 23 & 26
Operating Output Current Range (3.3V)
Operating Output Current Range (5.0V)
Output DC Current-Limit Inception (3.3V)
Output DC Current-Limit Inception (5.0V)
0
0
Subject to thermal derating; Figures 11-18
Subject to thermal derating; Figures 11-18
Output Voltage 10% Low; Figures 27-28
Output Voltage 10% Low; Figures 27-28
Figures 29-30
A
15.0
10.0
25
A
A
Short-Circuit Protection - redundant shutdown (3.3V)
Short-Circuit Protection - redundant shutdown (5.0V)
Output DC Current-Limit Shutdown Voltage (3.3\5.0V)
Back-Drive Current Limit while Enabled (3.3V only)
Back-Drive Current Limit while Disabled (3.3V only)
Maximum Output Capacitance (3.3V) - 50/50 split
Maximum Output Capacitance (5.0V) - 50/50 split
DYNAMIC CHARACTERISTICS
A
20
A
Figures 29-30
2.5\4.0
1.3
V
A
Negative current drawn from output
Negative current drawn from output
35W load; 5% overshoot at Vout at startup
35W load; 5% overshoot at Vout at startup
0.01
A
13,600
6,800
µF
µF
Input Voltage Ripple Rejection (3.3\5.0V)
Output Voltage during Load Current Transient
For a Step Change in 3.3V Output Current (.1A/µs)
For a Step Change in 5.0V Output Current (.1A/µs)
Settling Time
80\80
dB
120 Hz; Figures 33-34
200
200
400
mV
mV
µs
50% to 75% to 50% Iout max; Figure 21
50% to 75% to 50% Iout max; Figure 22
to within 1% Vout nom
Turn-On Transient
Turn-On Time
4
200
5
8
ms
ms
%
Full load, Vout=90% nom.; Figures 19 & 20
-40°C to +125°C; Figure F
Start-Up Inhibit Time
180
240
Output Voltage Overshoot
10mF load capacitance, Iout = 0A
EFFICIENCY
100% Load (40W)
90.0
90.0
%
%
48Vin, 50% load each Vout; Figures 1 - 6
48Vin, 25% load each Vout; Figures 1 - 6
50% Load (20W)
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 165°C
See Figures 11 - 18 for derating curves
Transformer Temperature
ISOLATION CHARACTERISTICS
Isolation Voltage (dielectric strength)
2000
30
V
Isolation Resistance
M
Ω
Isolation Capacitance2
470
pF
Note 1: For applications requiring reduced output voltage ripple and noise, consult SynQor applications support (e-mail: support@synqor.com)
Note 2: Higher values of isolation capacitance can be added external to the module.
Product # DQ65033QKA04
Phone 1-888-567-9596
Doc.# 005-2DQ653L Rev. B
11/11/04
Page 3
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