10 Watt TC Single Series DC/DC Converters
Features
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Description
These single output converters are designed for wide input
range, low noise, telecommunications, industrial control,
medical and instrument applications. The extra wide input
range (3:1) is ideal for battery or unregulated input applications.
These converters are state-of-the-art 120kHz MOSFET
based designs that provide outstanding line and load regulation.
The single outputs are regulated with a high loop gain current
mode control method that provides linear regulator type
performance.
Also included is an open collector TTL/CMOS compatible
logic shutdown pin to control converter operation.
The TC Single Series is protected from output shorts to
common by a high speed, pulse by pulse digital, current limit
circuit and a thermal overload sensing circuit.
Extra Wide 3:1 Input Voltage Range, 20-60 VDC
Low Noise, Highly Regulated Single Outputs
Efficiency 75% 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 Input and Outputs
Pulse by Pulse Digital Current Limiting
Overtemperature Protection Circuit
5 Year Warranty
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Selection Chart
Model
48S5.2000TC
48S12.850TC
48S15.700TC
Input Range
VDC
MIN
MAX
20.0
20.0
20.0
60.0
60.0
60.0
Outputs
VDC
5
12
15
Outputs
mA
2000
850
700
10 Watt TC Single Series Block Diagram
SHIELDED
ISOLATION TRANSFORMER
THERMAL SHUTDOWN
A
C
C
D
4 + OUTPUT
+ INPUT 3
- INPUT 2
CURRENT
MODE
PWM
5 CMN
7 TRIM
ON/OFF 1
Output
C
D
ISOLATED
FEEDBACK
5
12
15
136 µF
20 µF
20 µF
6.8V
15V
18V
SIX-SIDED SHIELDED COPPER CASE
LOW TC
BANDGAP REFERENCE
Manufacturing Company, Inc.
• Concord, California 94520 • Ph: 925/687-4411 or 800/542-3355 • Fax: 925/687-3333 • www.calex.com • Email: sales@calex.com
1
D-106
10 Watt TC Single Series DC/DC Converters
Input Parameters*
Model
Voltage Range
Reflected Ripple (2) (3), 0-20Mhz bw
Input Current Full Load
No Load
Efficiency
Switching Frequency
Maximum Input Overvoltage,
100ms No Damage
Turn-on Time
Recommended Fuse
MIN
TYP
MAX
TYP
TYP
TYP
TYP
TYP
MAX
TYP
48S5.2000TC
48S12.850TC
20.0
48.0
60.0
700
265
10
80
120
75
10
(4)
48S15.700TC
Units
VDC
mA RMS
273
10
80
mA
%
kHz
VDC
ms
265
10
78
Output Parameters*
Model
Output Voltage
Rated Current (5)
Voltage Range
100% Load
Load Regulation
0-100% Full Load
Line Regulation
Vin = Min-Max VDC
Short Term Stability (6)
Long Term Stability
Transient Response (7)
Dynamic Response (8)
Input Ripple Rejection (9)
Noise, 0-20MHz bw
Temperature Coefficient
MIN
MAX
MIN
TYP
MAX
TYP
MAX
TYP
MAX
TYP
TYP
TYP
TYP
TYP
TYP
MAX
TYP
MAX
TYP
48S5.2000TC
5
0
2000
4.950
5.000
5.050
0.1
0.3
0.01
0.15
48S12.850TC
12
0
850
11.900
12.000
12.100
0.05
0.1
0.01
0.1
0.02
0.2
100
100
60
20
50
50
150
15
48S15.700TC
15
0
700
14.900
15.000
15.100
0.04
0.1
0.01
0.1
Units
VDC
mA
VDC
%
%
%
150
110
20
50
%/kHrs
µs
mV peak
dB
mV P-P
ppm/°C
50
55
35
75
Overvoltage Clamp (10)
6.8
18
VDC
Short Circuit Protection to
Provides of Continuous, 8 hours Minimum Current Limit and Thermal Overload
Common for all Outputs
NOTES
(6) Short term stability is specified after a 30 minute warm-up at full
at Tc = 25° C, nominal input
*
All parameters measuredotherwise noted. Refer to the voltage
load, and with constant line, load and ambient conditions.
and full rated load unless
CALEX
Application Notes for the definition of terms, measurement
(7) The transient response is specified as the time required to settle
circuits and other information.
from 50 to 75% step load change (rise time of step = 2µ Sec.) to
a 50 mV error band.
(2) Noise is measured per CALEX Application Notes.
(8) Dynamic response is the peak overshoot voltage during the
(3) An external capacitor capable of withstanding at least 700 mA RMS
transient response time defined in note 7 above.
of 120 kHz ripple current must be connected directly across the +
and
- inputs. Suggested capacitors are:
(9) The input ripple rejection is specified for DC to 120Hz ripple with
a modulation amplitude of 1% Vin.
Sprague Electric:
672D686H100DM3C, 68µF, 100V
(10) For module protection only, see also note 4.
672D127H100ET3C, 120µF, 100V
(11) The logic shutdown pin is Open Collector TTL, CMOS, and relay
Panasonic:
ECEA2AFE101, 100µF, 100V
compatible. The input to this pin is referenced to Pin 2, -Input
ECEA2AFE121, 120µF, 100V
and is protected to +100 VDC.
United Chemi-Con:
SXE100VB120M12.5X25LL, 120µF, 100V
(12) Case is tied to Pin 3, +Input.
SXE100VB180M12.5X30LL, 180µF, 100V
(13) The functional temperature range is intended to give an additional
SXE100VB220M12.5X35LL, 220µF, 100V
data point for use in evaluating this power supply. At the low
Note:All of the above capacitors are 105°C Rated. Multiple smaller sized
functional temperature the power supply will function with no
capacitors may be used in parallel as long as their total ripple
side effects, however, sustained operation at the high functional
capability is above 700 mA RMS (see IRR curve).
temperature will reduce expected operational life. The data
sheet specifications are not guaranteed over the functional
(4) Determine the correct fuse size by calculating the maximum DC
temperature range.
current drain at low line input, maximum load and then adding 20
to 25%. A slow blow type fuse is recommended.
(14) The case thermal impedance is specified as the case temperature
rise over ambient per package watt dissipated.
(5) No minimum load required.
A
Manufacturing Company, Inc.
• Concord, California 94520 • Ph: 925/687-4411 or 800/542-3355 • Fax: 925/687-3333 • www.calex.com • Email: sales@calex.com
2
D-106
10 Watt TC Single Series DC/DC Converters
General Specifications *
All Models
Logic Shutdown (11)
ON Logic Level
or Leave Pin Open
OFF Logic Level
Input Resistance
Converter Idle Current
Shut Down Pin Low
Isolation
Isolation Voltage (12)
10 mA Leakage
Input-Output
Input to Output
Capacitance
Output Trim Function
Input Resistance
Programming Range
Environmental
Case Operating Range
No Derating
Units
MIN
MAX
TYP
TYP
8.0
2.0
100
1
VDC
VDC
kohms
mA
MIN
TYP
500
70
VDC
BOTTOM VIEW
pF
Mechanical tolerances unless otherwise noted:
X.XX dimensions: ±0.020 inches
X.XXX dimensions: ±0.005 inches
SIDE VIEW
TYP
MIN
20
±10
-25
80
-40
90
-55
105
11
90
kohms
%
MIN
MAX
MIN
Case Functional Range (13)
MAX
MIN
Storage Range
MAX
Thermal Impedance (14)
TYP
Thermal Shutdown
TYP
Case Temperature
General
TYP
Seal around terminals is not hermatic. Do not immerse unts in any
liquid.
°C
°C
°C
°C/Watt
°C
Pin
1
2
3
4
5
6
Function
ON/OFF
-INPUT
+INPUT
+OUTPUT
CMN
TRIM
Unit Weight
1.9
oz
Connections for Output Trim
Use one resistor for either trim up or trim down. The values can
range from infinity to zer ohms with zero ohms giving the most
trim.
Low Noise Input Circuit
The circuit shown below will reduce reflected ripple to 50 mA
P-P. Keep all components as close to the converter as
possible
The inductor is 35 turns on a Micro-Metals T50-26 Iron
Powder Core.
+ OUT 4
TRIM 6
CMN 5
USING TRIMPOT
10K LOAD
+ OUT 4
TRIM 6
CMN 5
A
TRIM
DOWN
LOAD
TRIM
UP
See note 3 for capacitor recommendations and note 4 for
fuse sizing.
THIS CAPACITOR IS REQUIRED
FOR PROPER OPERATION
USING FIXED RESISTORS
FUSE
40 µH, 700 mA
3 + INPUT
TO INPUT
SOURCE
See Note 3
2 - INPUT
Manufacturing Company, Inc.
• Concord, California 94520 • Ph: 925/687-4411 or 800/542-3355 • Fax: 925/687-3333 • www.calex.com • Email: sales@calex.com
3
D-106
10 Watt TC Single Series DC/DC Converters
Typical Performance (Tc=25°C; Vin=48VDC, Full Rated Load
48S5.2000TC EFFICIENCY Vs. LINE INPUT
90
90
48S12.850TC EFFICIENCY Vs. LINE INPUT
90
48S15.700TC EFFICIENCY Vs. LINE INPUT
EFFICIENCY (%)
EFFICIENCY (%)
50% FULL LOAD
80
EFFICIENCY (%)
85
85
85
80
100% FULL LOAD
100% FULL LOAD
80
100% FULL LOAD
75
50% FULL LOAD
75
50% FULL LOAD
75
70
20
25
30
35
40
45
50
55
60
70
20
25
30
35
40
45
50
55
60
70
20
25
30
35
40
45
50
55
60
LINE INPUT (VOLTS)
LINE INPUT (VOLTS)
LINE INPUT (VOLTS)
48S5.2000TC EFFICIENCY Vs. LOAD
90
90
48S12.850TC EFFICIENCY Vs. LOAD
90
48S15.700TC EFFICIENCY Vs. LOAD
LINE = 20VDC
LINE = 20VDC
LINE = 20VDC
EFFICIENCY (%)
80
EFFICIENCY (%)
EFFICIENCY (%)
80
LINE = 48VDC
80
LINE = 48VDC
LINE = 48VDC
70
70
70
LINE = 60VDC
LINE = 60VDC
60
LINE = 60VDC
60
60
50
0
20
40
60
80
100
50
0
20
40
60
80
100
50
0
20
40
60
80
100
LOAD (%)
LOAD (%)
LOAD (%)
TC SERIES INPUT RIPPLE Vs. LINE INPUT
1.0
INPUT CURRENT Vs. LINE INPUT
0.8
OUTPUT VOLTAGE Vs. OUTPUT LOAD
120
REFLECTED RMS RIPPLE (AMPS)
INPUT CURRENT (AMPS)
100% FULL LOAD
0.6
0.6
100% FULL LOAD
0.4
OUTPUT VOLTAGE (%)
50
60
0.8
100
80
60
0.4
50% FULL LOAD
0.2
50% FULL LOAD
0.2
40
20
0.0
20
25
30
35
40
45
50
55
60
0.0
0
10
20
30
40
0
0
20
40
60
80
100
120
140
160
LINE INPUT (VOLTS)
LINE INPUT (VOLTS)
OUTPUT LOAD (%)
A
TC SERIES POWER DERATING
0.10
12.0
OUTPUT VOLTAGE Vs. CASE TEMPERATURE
OUTPUT IMPEDANCE Vs. FREQUENCY
1.0
OUTPUT POWER (WATTS)
NORMALIZED OUTPUT (%)
INFINITE HEAT SINK
10.0
IMPEDANCE (OHMS)
0.00
STILL AIR
8.0
48S5.2000TC
48S15.700TC
-0.10
6.0
↑
←SAFE
OPERATING AREA→
↓
0.1
-0.20
4.0
-0.30
2.0
0.0
-25
-15
-5
5
15
25
35
45
55
65
75
85
-0.40
-30
-20
-10
0
10
20
30
40
50
60
70
80
0.01
10
100
1K
10K
100K
1MEG
CASE TEMPERATURE (Deg C)
AMBIENT TEMPERATURE (Deg C)
FREQUENCY (Hz)
Manufacturing Company, Inc.
• Concord, California 94520 • Ph: 925/687-4411 or 800/542-3355 • Fax: 925/687-3333 • www.calex.com • Email: sales@calex.com
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