WALL INDUSTRIES, INC.
Technical Specifications
SPECIFICATION
INPUT
Turn on at
Turn off at
Input Over voltage Shutdown
Turn off at
Turn on at
Operating Voltage Range
Maximum Input Current
No Load Input Current
Input Current under “LOGIC OFF”
Inrush Current Transient Rating
Reflected Ripple Current
OUTPUT
Output Voltage Set point
Output Voltage Regulation
Over Load
Over Line
Over Temperature
Output Voltage Ripple and Noise
Basic Ripple
Spikes P-P
Output Current Ranges
Output Current Limit
Short Term Output Current Surge
DYNAMIC CHARACTERISTICS
Input Voltage Ripple Rejection
Output Transient and Load Changes
Load step /
∆
V
Load step /
∆
V
Recovery Time
Turn on Delay
Overshoot of Output Voltage
EFFICIENCY
@ 100% load
@ 75% load
@ 50% load
@ 25% load
TEMPERATURE CONSIDERATIONS
Thermal Resistance
Normal Convection
100 lfm
200 lfm
300 lfm
400 lfm
Heatsink Considerations
General Technical Data
Switching Frequency
Remote ON OFF Control
Trimmablility
Over Temperature Shutdown
MTBF
APPLICATION NOTES
LPQ SERIES
Model No.
LPQ48S3.3-50R
All specifications are based on 25C, Nominal Line and Full Load unless otherwise noted.
We reserve the right to change specifications based on technological advances.
Related condition
MIN
NOM
35
34
n/a
n/a
48
1.54
60
2
1
4
3.3
± 0.2
± 0.2
0.02
50
80
Rated Output Current
Self Resetting
0
16.5
19.5
100
100
15
22.5
MAX
Unit Measured
Volt DC
Volt DC
Volt DC
Volt DC
Volt DC
A
mA
mA
A
2
Sec
mA
Volt DC
%
%
% /
o
C
mV
mV
A
A
A/sec
dB
mV
mV
µsec
msec
%
%
%
%
%
o
o
Rated Input Voltage
Low Line 100% load
36
75
12uH / 33uF input filter
3.267
3.333
120 Hz
X
X
50 to 75%
50 to 100%
75 to 50%
100 to 50 %
To within 1% Rated Vo
From Vin(nom) to 90% Vout (nom)
Full Load Resistive
60
135
130
50
50
0
90
90
89
82
Rθc-a
C/Watt
C/Watt
o
C/Watt
o
C/Watt
o
C/Watt
Available, Contact Factory
Fixed
Acitve HIGH or LOW
2.97
PCB Temperature
Bellcore TR-332
1.81 E6
330
3.63
125
KHz
High/Low TTL
Volt DC
o
C
Hours
(888) 597-WALL
www.wallindustries.com
1
WALL INDUSTRIES, INC.
DERATING CURVE
OUTPUT POWER (WATTS)
APPLICATION NOTES
LPQ SERIES
60
50
40
30
20
10
0
0
20
40
60
80
AMBIENT TEMPERATURE (DEG. C.)
POWER DISSIPATION VS OUTPUT CURRENT
POWER DISSIPATION (WATTS)
8
7
6
5
4
3
2
1
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16
OUTPUT CURRENT (AMPS)
Nominal
Line
Low Line
High
Line
EFFICIENCY VS OUTPUT CURRENT
100
Low Line
90
EFFICIENCY (%)
80
70
60
50
40
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16
OUTPUT CURRENT (AMPS)
High
Line
Nominal
Line
(888) 597-WALL
www.wallindustries.com
2
WALL INDUSTRIES, INC.
APPLICATION NOTES
LPQ SERIES
TYPICAL OUTPUT RIPPLE
20mV/div, 1uS/div, full load, 36Vin
10uF // 0.1uF decoupling caps room temp
TYPICAL OUTPUT RIPPLE
50mV/div, 1uS/div, full load 75Vin
10uF // 0.1uF decoupling cap room temp
TYPICAL INPUT RIPPLE CURRENT
2mA/div, 1uS/div, full load 48Vin at
room temp with a 12uH / 33uF input filter
TYPICAL TRANSIENT RESPONSE
50mV/div, 200uS/div, 50% full load
to 75% full load 48Vin room temp
TYPICAL RISE TIME & TURN-ON DELAY
USING LOGIC ENABLE
1V/div, 10mS/div (Vout), 1V/div 10mS/div (logic
enable) 36Vin, full load at room temp
TYPICAL RISE TIME & TURN-ON DELAY
WITH Vin 0-48V
1V/div, 10mS/div (Vout), 10V/div, 10mS/div (Vin)
at room temp
(888) 597-WALL
www.wallindustries.com
3
京公网安备 11010802033920号
EEWORLD
