15 Watt SW Triple Series DC/DC Converters
Features
Wide 2:1 Input Voltage Range
(9-18, 18-36 or 36-72VDC)
Low Noise, Highly Regulated Triple Outputs
Efficiency 78% for All Line Conditions
No Derating to 80°C Case Temperature
Six-Sided Shielded Low Thermal Gradient
Copper Case
500 VDC Minimum Input to Output Isolation
Overvoltage Protected Outputs
Pulse by Pulse Digital Current Limiting
Five Year Warranty
Description
These triple output converters are designed for wide input
range telecommunications, medical instrument and industrial
control system applications. The converters have a high
accuracy feedback control circuit and coupled inductor
magnetics. This combination provides linear regulator type
performance with switching topology efficiency. Outstanding
line and load regulation are achieved over the full input range
and under the specified load current range. A logic shutdown
pin is also included to inhibit converter operation as is internal
thermal overload protection. The outputs and the power
switch are both overvoltage protected.
Model
12T5.12SW
12T5.15SW
24T5.12SW
24T5.15SW
48T5.12SW
48T5.15SW
Selection Chart
Input Range
VDC
Min
Max
9.00
9.00
18.00
18.00
36.00
36.00
18.00
18.00
36.00
36.00
72.00
72.00
Outputs
VDC
5, ±12
5, ±15
5, ±12
5, ±15
5, ±12
5, ±15
Outputs
mA
1500, ±310
1500, ±250
1500, ±310
1500, ±250
1500, ±310
1500, ±250
15 Watt SW Triple Series Block Diagram
SHIELDED ISOLATION TRANSFORMER
6 +5 OUTPUT
THERMAL
SHUTDOWN
1000 µF
A
4 CMN
3 +OUTPUT
100 µF
5 -OUTPUT
100 µF
+INPUT
1
LOW ESR
CAPACITOR
PWM
CONTROL
FEEDBACK
AMPLIFIER
-INPUT 2
ON/OFF 8
10K
1.5 MEG || 0.1µF
SIX-SIDED SHIELDED COPPER CASE
2401 Stanwell Drive • Concord, California 94520 • Ph: 925/687-4411 or 800/542-3355 • Fax: 925/687-3333 • www.calex.com • Email: sales@calex.com
1
3/2001, eco# 041007-1
15 Watt SW Triple Series DC/DC Converters
Input Parameters*
Model
Voltage Range
Input Filter
Input Current Full Load
No Load
Efficiency
Switching Frequency
Maximum Input Overvoltage,
100ms No Damage
Turn-on Time, 1% Output Error
Recommended Fuse
MIN
MAX
TYP
TYP
TYP
TYP
MAX
TYP
25
12T5.12SW
12T5.15SW
12T5.12SW
24T5.15SW
48T5.12SW
48T5.15SW
Units
VDC
9.0
18.00
1600
25
18.0
36.00
Low ESR Capacitor
780
18
78
55
45
120
(2)
85
36.00
72.00
380
16
mA
%
kHz
VDC
ms
Output Parameters*
12T5.12SW
12T5.15SW
24T5.12SW
24T5.15SW
48T5.12SW
48T5.15SW
5
MIN
MAX
MIN
TYP
MAX
TYP
MAX
TYP
MAX
TYP
TYP
TYP
TYP
TYP
TYP
MAX
TYP
MAX
TYP
85
25
50
250
1500
4.900
5.000
5.100
2.0
3.5
12T5.12SW
24T5.12SW
48T5.12SW
±12
100
310
11.640
12.000
12.360
1.5
3.0
0.1
0.5
0.02
0.2
50
75
35
20
50
120
250
15.0
70
20
50
12T5.15SW
24T5.15SW
48T5.15SW
±15
100
250
14.550
15.000
15.450
1.5
3.0
Model
Units
Output Voltage
Rated Load (3)
Voltage Range
100% Load
Load Regulation Min-Max Load
Line Regulation
Vin = Min-Max VDC
Short Term Stability (4)
Long Term Stability
Transient Response (5)
Dynamic Response (6)
Input Ripple Rejection (7)
Noise, 0-20MHz bw
Temperature Coefficient
Overvoltage Clamp (8)
Short Circuit Protection to
Common for all Outputs
VDC
mA
VDC
%
%
%
%/kHrs
µs
mV peak
dB
mV P-P
ppm/°C
6.8
Continuous, 8 Hours Minimum Current Limit and Thermal Overload
A
18.0
VDC
NOTES
*
(2)
(3)
(4)
(5)
(6)
All parameters measured at Tc = 25°C, nominal input voltage
and full rated load unless otherwise noted. Refer to the
CALEX Application Notes for the definition of terms,
measurement circuits and other information.
Determine the correct fuse size by calculating the maximum DC
current drain at low line input, maximum load then adding 20 to
25 percent. Slow blow type recommended.
The module will not be damaged if run at less than minimum
load. Regulation can degrade with less than minimum load or
substantial load imbalance.
Short term stability is specified after a 30 minute warm-up at full
load and with constant line, load and ambient conditions.
The transient response is specified as the time required to settle
from 50 to 75% step load change (rise time of step = 2µSec.) to
a 1% error band.
Dynamic response is the peak overshoot voltage during the
transient response time defined in note 5 above.
(7)
(8)
(9)
(10)
(11)
(12)
(13)
The input ripple rejection is specified for DC to 120Hz ripple with
a modulation amplitude of 1% Vin.
For module protection only, see also note 2.
The logic shutdown pin is Open Collector TTL, CMOS, and relay
compatible. The input to this pin is referenced to input minus.
The functional temperature range is intended to give an additional
data point for use in evaluating this power supply. At the low
functional temperature the power supply will function with no
side effects, however, sustained operation at the high functional
temperature will reduce expected operational life. The data
sheet specifications are not guaranteed over the functional
temperature range.
The case thermal impedance is specified as the case temperature
rise over ambient per package watt dissipated.
Specifications subject to change without notice.
Water Washability - Calex DC/DC converters are designed to
withstand most solder/wash processes. Careful attention should
be used when assessing the applicability in your specific
manufacturing process. Converters are not hermetically sealed.
2401 Stanwell Drive • Concord, California 94520 • Ph: 925/687-4411 or 800/542-3355 • Fax: 925/687-3333 • www.calex.com • Email: sales@calex.com
2
3/2001, eco# 041007-1
15 Watt SW Triple Series DC/DC Converters
General Specifications*
All Models
Logic Shutdown (9)
ON Logic Level
or Leave Pin open
OFF Logic Level
Input Resistance
Converter Idle Current,
Shut Down Pin Low
Isolation
Isolation Voltage
10µA Leakage
Input-Output
12T & 24T Models
48T Models
Input to Output
Capacitance
Environmental
Case Operating Range
No Derating
Units
MIN
MAX
TYP
TYP
2.4
1.2
10
6
VDC
VDC
k ohms
mA
MIN
MIN
TYP
700
1544
190
VDC
pF
MIN
MAX
MIN
Case Functional Range (10)
MAX
MIN
Storage Range
MAX
Thermal Impedance (11)
TYP
Thermal Shutdown
TYP
Case Temperature
General
TYP
-25
80
-40
90
-55
100
4.4
90
°C
°C
°C
°C/Watt
°C
BOTTOM VIEW
Mechanical tolerances unless otherwise noted:
X.XX dimensions: ±0.020 inches
X.XXX dimensions: ±0.005 inches
SIDE VIEW
Seal around terminals is not hermetic. Do not immerse units in any
liquid
Pin
1
2
3
4
5
6
8
Function
+INPUT
-INPUT
+12/ +15 OUTPUT
CMN
-12/-15 OUTPUT
+5 OUTPUT
ON/OFF
12T INPUT CURRENT Vs. LINE INPUT VOLTAGE
3.0
Unit Weight
Mounting Kit
7.0
MS9
oz
Typical Performance (Tc=25°C, Vin=Nom VDC, Rated Load).
12T5.15SW EFFICIENCY Vs. LINE INPUT
84
83
12T5.15SW EFFICIENCY Vs. LOAD
LINE = 12VDC
LINE = 9VDC
82
82
EFFICIENCY (%)
EFFICIENCY (%)
LINE = 18VDC
81
INPUT CURRENT (AMPS)
50% FULL LOAD
2.5
100% FULL LOAD
2.0
80
1.5
100% FULL LOAD
80
1.0
A
5
10
78
79
50% FULL LOAD
0.5
76
8
10
12
14
16
18
78
20
40
60
80
100
0.0
15
20
LINE INPUT (VOLTS)
LOAD (%)
LINE INPUT (VOLTS)
24T5.15SW EFFICIENCY Vs. LINE INPUT
83
84
24T5.15SW EFFICIENCY Vs. LOAD
1.2
24T INPUT CURRENT Vs. LINE INPUT VOLTAGE
LINE = 18VDC
LINE = 24VDC
INPUT CURRENT (AMPS)
81
1.0
EFFICIENCY (%)
100% FULL LOAD
82
EFFICIENCY (%)
100% FULL LOAD
0.8
79
50% FULL LOAD
80
LINE = 36VDC
77
0.6
0.4
75
0.2
50% FULL LOAD
78
15
20
25
30
35
40
73
20
40
60
80
100
0.0
5
10
15
20
25
30
35
40
LINE INPUT (VOLTS)
LOAD (%)
LINE INPUT (VOLTS)
*
Curves are applicable to both outputs ±12 and ±15 VDC
2401 Stanwell Drive • Concord, California 94520 • Ph: 925/687-4411 or 800/542-3355 • Fax: 925/687-3333 • www.calex.com • Email: sales@calex.com
3
3/2001, eco# 041007-1
15 Watt SW Triple Series DC/DC Converters
Typical Performance (Tc=25°C, Vin=Nom VDC, Rated Load).
48T5.15SW EFFICIENCY Vs. LINE INPUT
90
85
48T5.15SW EFFICIENCY Vs. LOAD
0.6
48T INPUT CURRENT Vs. LINE INPUT VOLTAGE
LINE = 36VDC
INPUT CURRENT (AMPS)
0.5
EFFICIENCY (%)
85
EFFICIENCY (%)
100% FULL LOAD
50% FULL LOAD
80
LINE = 48VDC
100% FULL LOAD
0.4
0.3
LINE = 72VDC
75
80
0.2
0.1
50% FULL LOAD
75
35
40
45
50
55
60
65
70
75
70
20
40
60
80
100
0.0
0
10
20
30
40
50
60
70
80
LINE INPUT (VOLTS)
LOAD (%)
LINE INPUT (VOLTS)
OUTPUT VOLTAGE Vs. CASE TEMPERATURE
0.4
+5 VOLT OUTPUT*
CROSS REGULATION Vs. PERCENT OF FULL LOAD
+15 VOLT OUTPUT*
CROSS REGULATION Vs. PERCENT OF FULL LOAD
NORMALIZED OUTPUT VOLTAGE (%)
+/-15 OUTPUT
0.2
2.5
NORMALIZED OUTPUT VOLTAGE (%)
3.0
1.5
1.0
0.5
0.0
-0.5
-1.0
-1.5
-2.0
40
50
60
70
80
90
100
NORMALIZED OUTPUT (%)
+\-15 FULL LOAD
2.0
1.5
1.0
0.5
+5 FULL LOAD
-15 FULL LOAD
+5 MIN LOAD
-15 FULL LOAD
0.0
+5 OUTPUT
-0.2
+5 FULL LOAD
-15 MIN LOAD
-0.4
+\-15 MIN LOAD
0.0
-0.5
-1.0
10
20
30
40
50
60
70
80
90
100
-0.6
+5 MIN LOAD
-15 MIN LOAD
-0.8
-30
-20
-10
0
10
20
30
40
50
60
70
80
CASE TEMPERATURE (Deg C)
5 VOLT LOAD (%)
+15 VOLT LOAD (%)
-15 VOLT OUTPUT*
CROSS REGULATION Vs. PERCENT OF FULL LOAD
NORMALIZED OUTPUT VOLTAGE (%)
0.4
0.2
-0.0
-0.2
-0.4
-0.6
-0.8
-1.0
40
50
60
70
80
90
100
+5 FULL LOAD
+15 FULL LOAD
+5 MIN. LOAD
+15 FULL LOAD
-15 VOLT LOAD (%)
*
Curves are applicable to both outputs ±12 and ±15 VDC
A
2401 Stanwell Drive • Concord, California 94520 • Ph: 925/687-4411 or 800/542-3355 • Fax: 925/687-3333 • www.calex.com • Email: sales@calex.com
4
3/2001, eco# 041007-1
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