Download Data Sheet

APPLICATION NOTES
Rev C
SPW48S5-100
100W DC-DC Converter
18-75 Vdc Input
5 Vdc Output at 20A
Half-Brick Package
Features:
x 82% Efficient at Full Load
x Fast Transient Response
x Operation to No Load
x 100% Burn In
x Remote ON/OFF (Active High/Low)
x Remote Sense Compensation
x UL 1950 Listed - CE Mark
x
x
x
x
x
x
x
Low Output Ripple
Fixed Switching Frequency
Output Over Current Protection
Output Short Circuit Protection
Over Temperature Protection
1500 Vdc Isolation
Test Board Available
Description:
The SPW series is a high-density half brick converter that incorporates the desired features required in
today’s demanding applications. When performance, reliability, and low cost are needed, the SPW
series delivers.
(888) 597-WALL
www.wallindustries.com
1 of 7
Rev C
APPLICATION NOTES
WALL INDUSTRIES, INC.
Technical Specifications
SP & SPW SERIES
Model No. SPW48S5-100
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.
SPECIFICATION
Related condition
MIN
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 / delta V
Load step / delta 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 (See Note Below)
Trimmablility
Over Temperature Shutdown
MTBF
Rated Input Voltage
Low Line 100% load
18
NOM
MAX
17
15
Volt DC
Volt DC
79
77
48
3.45
30
2
Volt DC
Volt DC
Volt DC
A
mA
mA
A2 Sec
mA
75
20
4.95
Rated Output Current
0
24
Unit Measured
5.00
28
5.05
Volt DC
0.1
0.1
0.02
%
%
o
%/ C
75
20
32
mV
mV
A
A
A/sec
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
Rtheta c-a
dB
250
250
100
250
0
mV
mV
μsec
M sec
%
82
83
83
80
%
%
%
%
7.5
6.2
5.1
4.3
3.5
o
C/Watt
C/Watt
o
C/Watt
o
C/Watt
o
C/Watt
o
Contact Factory
FIXED
POSITIVE OR NEGATIVE
400
Case Temperature
105
Bellcore TR-332 nom is 2.50m
KHz
High/Low TTL
o
C
Hours
Note: Positive Remote ON/OFF control is standard. To order negative logic Remote ON/OFF control add the suffix "R" to the part number.
(888) 597-WALL
www.wallindustries.com
2 of 7
Rev C
WALL INDUSTRIES, INC.
APPLICATION NOTES
SP & SPW SERIES
Figure 1: Mechanical Dimensions
Unit: inches
Tolerance: X.XX ±0.020
X.XXX±0.010
(888) 597-WALL
www.wallindustries.com
3 of 7
Rev C
WALL INDUSTRIES, INC.
APPLICATION NOTES
SP & SPW SERIES
Output Voltage Trim
The following information is provided to allow quick calculation of the trim resistor value for a desired output voltage. The general
procedure for calculating a trim resistor is as follows:
1.
2.
3.
4.
Determine the desired output voltage (Vo)
Select Equation. (Trim Low/Trim High)
Use the data in Table 1 to complete the equation.
Evaluate.
In order to trim low use Equation 1 and Table 1 to calculate resistor RTL for the desired output voltage.
Equation 1: Trim Low
RTL
ª
º
Vo VREF
« VREF
» RLIM
1
˜
(
)
(
(
))
V
V
R
R
o
REF
L
H
¬
¼
Vo - Desired output voltage.
All resistor values in K ohms.
Schematic 1: Trim Low
In order to trim high use Equation 2 and Table 1 to calculate resistor RTH for the desired output voltage.
Equation 2: Trim High
RTH
ª
«
«
¬
VREF
Vo VREF
RH
VREF
RL
º
» R LIM
»
¼
Vo - Desired output voltage.
All resistor values in K ohms.
Schematic 2: Trim High
MODEL
(Output Voltage)
RH
RLIM
RL
VREF
(K OHMS)
(K OHMS)
(K OHMS)
(VOLTS)
3.3V
5.0V
8.0V
9.0V
12.0V
15.0V
24.0V
26.0V
32.0V
0.750
2.49
5.49
6.49
9.53
12.4
21.5
17.6
23.7
0.499
10.0
10.0
10.0
13.7
13.7
15.4
15.4
12.7
2.32
2.49
2.49
2.49
2.49
2.49
2.49
1.87
2.00
2.495
2.495
2.495
2.495
2.495
2.495
2.495
2.495
2.495
Table 1 : Trim Low/High Data Table.
Note: Output trim +/- 10% max.
(888) 597-WALL
www.wallindustries.com
4 of 7
Rev C
APPLICATION NOTES
WALL INDUSTRIES, INC.
SP & SPW SERIES
%RATEDOUTPUTPOWER
DERATING CURVE
100
90
80
70
60
50
40
30
20
10
0
0 LFM
100 LFM
200 LFM
300 LFM
400 LFM
5
15
25
35
45
55
65
75
85
95
105
0
AMBIENT TEMPERATURE C
SPW48S5-100
POWER DISSIPATION VS OUTPUT POWER
POWERDISSIPATION(Watts)
25
20
36 VIN
15
48 VIN
10
75 VIN
5
0
0
10
20
30
40
50
60
70
80
90
100
% OUTPUT POWER
SPW48S5-100
EFFICIENCY VS OUTPUT CURRENT
EFFICIENCY(%)
90
80
70
36V
60
48V
50
75V
40
30
5
15
25
35
45
55
65
75
85
95
OUTPUT CURRENT (Amperes)
SPW48S5-100
(888) 597-WALL
www.wallindustries.com
5 of 7
Rev C
APPLICATION NOTES
WALL INDUSTRIES, INC.
TYPICAL OUTPUT RIPPLE VOLTAGE
20mV/div, 2 us/div, full load 48 vin 10 uF
decoupling cap. Room temperature.
TYPICAL INPUT REFLECTED RIPPLE CURRENT
20mA/div, full load 48 vin.(using 12uH, 33uF (low ESR)
source impedance). Room temperature.
TYPICAL RISE TIME AND TURN ON DELAY
USING LOGIC ENABLE
2 V/div, 200 mS/div, (vout) 2 V/div, 200 mS/div
(logic enable) 48 vin, full load. Room temperature.
(888) 597-WALL
SP & SPW SERIES
TYPICAL RISE TIME AND TURN ON DELAY
WITH VIN 0-48V
2V/div, 200 mS/div, (vout) 20 V/div 200 mS/div (vin)
48 vin full load. Room temperature.
www.wallindustries.com
6 of 7
Rev C
APPLICATION NOTES
WALL INDUSTRIES, INC.
SP & SPW SERIES
Ordering Information:
Part Number Example:
SPW 48 S 5 – 100 R
Series
Designation
Nominal
Input
Voltage Single
Output
Nominal
Output
Voltage
Maximum
Output
Power
Options
Blank
Leave Blank for
Active High Enable
R
Active Low Enable
Company Information:
Wall Industries, Inc. has created custom and modified units for over 40 years. Our in-house research and development engineers will
provide a solution that exceeds your performance requirements on time and on budget. Our ISO9001-2000 certification is just one
example of our commitment to producing a high quality, well documented product for our customers.
Our past projects demonstrate our commitment to you, our customer. Wall Industries, Inc. has a reputation for working closely with its
customers to ensure each solution meets or exceeds form, fit and function requirements. We will continue to provide ongoing support for
your project above and beyond the design and production phases. Give us a call today to discuss your future projects.
Contact Wall Industries for further information:
Phone:
Toll Free:
Fax:
E-mail:
Web:
Address:
(888) 597-WALL
(603)778-2300
(888)587-9255
(603)778-9797
[email protected]
www.wallindustries.com
5 Watson Brook Rd.
Exeter, NH 03833
www.wallindustries.com
7 of 7
Similar pages