24T5.12K-CM [ETC]
DC to DC Converter ; 直流到直流转换器\n
| 型号： | 24T5.12K-CM |
| 厂家： | 
ETC |
| 描述： | DC to DC Converter
|
| 文件： | 总7页 (文件大小：134K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
55 Watt K Triple Series DC/DC Converters
Features
Description
n
The 55 Watt Triple Series consists of separate power sections
for the single and dual outputs. These power sections are
operated in anti-phase to each other to reduce the ripple
current stress on the input components and the reflected input
ripple. The main benefit of two separate power sections is the
excellent regulation achieved by all outputs. An order of
magnitude regulation improvement is obtained over
competitive designs. There is no cross regulation between +5
output and the dual outputs. This means that the dual output
voltages are independent of the +5 Volt loading and visa
versa.
Very Low Noise, < 50 mV P-P Maximum
n
PCB Mounting with Optional Heat Sink or
Chassis Mount Versions
n
Efficiencies to 87%
n
Common and Differential Mode Input Filtering
n
Remote Sense On +5 Volt Output
n
Single and Dual Outputs are Isolated From
Each Other
n
No derating to 80°C Case Temperature
Excellent noise performance is attained by using a 0.040
inch thick aluminum case, pot core and toroidal magnetics,
double shielded transformers and both normal mode and
common mode input filtering.
n
Five Year Warranty
The input and outputs are protected from overvoltage by
transientvoltagesuppressordiodes. Theoutputsareprotected
from faults with pulse by pulse digital current limiting.
Selection Chart
Input Range
Outputs
VDC
Outputs
mA
VDC
Model
Min
9.0
Max
18.0
18.0
36.0
36.0
72.0
72.0
12T5.12K
12T5.15K
24T5.12K
24T5.15K
48T5.12K
48T5.15K
5, ±12
5, ±15
5, ±12
5, ±15
5, ±12
5, ±15
5000, ±1250
5000, ±1000
5000, ±1250
5000, ±1000
5000, ±1250
5000, ±1000
9.0
18.0
18.0
36.0
36.0
55 Watt Triple Series Block Diagram
DOUBLE SHIELDED
ISOLATION TRANSFORMER
SINGLE SECTION
10 +5V OUTPUT
THERMAL SHUTDOWN
A
+5 CMN
9
+ INPUT
4
5
+ INPUT
COMMON &
DIFFERENTIAL
MODE INPUT
FILTER
11 +5V SENSE
ANTI-PHASE
DUAL PWM
CONTROLLER
ISOLATION
BARRIER
8
+5V CMN SENSE
2
3
- INPUT
- INPUT
14 +DUAL OUTPUT
13 DUAL CMN
6
ON/OFF
1.5M || 0.01µF
12 -DUAL OUTPUT
CASE
7
SHIELDED, LOW THERMAL GRADIENT
ALUMINUM CASE
DUAL SECTION
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
55 Watt K Triple Series DC/DC Converters
Input Parameters*
Model
12T5.12K
12T5.15K
24T5.12K
24T5.15K
38T5.12K
48T5.15K
Units
MIN
MAX
TYP
MAX
TYP
TYP
9.0
18.0
110
250
5630
50
18.0
36.0
60
150
2715
35
36.0
72.0
35
80
1325
30
Voltage Range
VDC
Reflected Ripple (2), 0-20MHz bw
mA P-P
mA
Input Current Full Load
No Load
Efficiency
TYP
TYP
81
85
80
87
%
Switching Frequency
kHz
Maximum Input Overvoltage, 100ms
No Damage
MAX
TYP
23
45
85
VDC
Turn-on Time, 1% Output Error
Recommended Fuse
70
(3)
ms
AMPS
Output Parameters*
12T5.12K 12T5.15K
24T5.12K 24T5.15K
48T5.12K 48T5.15K
12T5.12K 24T5.12K
48T5.12K
12T5.15K 24T5.15K
48T5.15K
Model
Units
Output Voltage
+5
±12
±15
VDC
mA
MIN
MAX
MIN
50
310
1250
11.925
12.000
12.075
0.5
0.7
0.8
1.2
2.0
4.0
0.8
1.2
0.02
0.2
250
1000
14.925
15.000
15.075
0.5
0.7
0.7
1.2
2.0
Rated Current (4)
5000
4.950
5.000
5.050
Voltage Range
100% Load (5)
TYP
MAX
TYP
MAX
TYP
MAX
TYP
MAX
TYP
MAX
TYP
MAX
VDC
Output Balance
(Plus to Minus Output, Full Load)
Load Regulation 25%-100%
N/A
%
0.02
0.2
0.02
0.2
N/A
N/A
%
%
1-100%
4.0
0.7
1.2
Cross Regulation (6)
Line Regulation
Vin = Min-Max VDC
%
%
Short Term Stability (7)
TYP
0.02
Long Term Stability
TYP
TYP
TYP
TYP
0.2
400
250
15
%/kHrs
µs
Transient Response (8)
Dynamic Response (9)
Input Ripple Rejection (10)
500
250
25
400
200
15
mV peak
dB
TYP
MAX
TYP
MAX
15
50
50
200
15
Noise, 0-20MHz bw
mV P-P
50
100
6.8
50
200
18
Temperature Coefficient
Overvoltage Clamp (11)
ppm/°C
A
TYP
VDC
Short Circuit Protection to
Common for all Outputs
Provides minimum of 8 hours continuous protection with current limiting and
thermal overload techniques
NOTES
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.
(5) The remote sense pins must be connected to their respective
outputpinsforproperoutputvoltageandregulation.Thecombined
drop on each output line to it’s respective remote sense pin must
be less than 0.3 volts or 0.6 volts for both sense lines combined.
*
(2) NoiseismeasuredperCALEXApplicationNotes. Measurement
bandwidth is 0 - 20 MHz.
(6) Cross regulation is defined as the change in one output when the
other output is changed from minimum to maximum load.
(3) Determine the correct fuse size by calculating the maximum DC
current drain at low line input, maximum load and then adding
20 to 25% to get the desired fuse size. A slow blow type fuse is
recommended. For reverse voltage protection on the input this
fuse must be used.
(7) Short term stability is specified after a 30 minute warm-up at full
load, constant line, load and ambient conditions.
(8) Transient response is defined as the time for the output to settle
from a 50 to 75% step load change to a 2% error band (rise time
of step = 2µ Sec).
(4) Minimum load is required for rated regulation only, no module
damage will occur if the output is run at less than minimum load.
Maximum output power on the dual section is 30 Watts (i.e. one
output can draw 30 Watts and the other 0 Watts). Regulation
degrades with substantial loading unbalance.
(9) Dynamic response is defined as the peak overshoot during a
transient as defined in note 8 above.
(10) The input ripple rejection is specified for DC to 120 Hz ripple with
a modulation amplitude of 1% of Vin.
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
55 Watt K Triple Series DC/DC Converters
Heat Sink Option (-HS suffix)
General Specifications*
All Models
Units
ON/OFF Function (12)
ON Logic Level
or Leave Pin Open
MIN
4.5
VDC
OFF Logic Level
Input Resistance
MAX
TYP
1.2
2
VDC
k ohms
Converter Idle Current,
ON/OFF Pin Low
TYP
25
mA
Isolation
Isolation Voltage
Input to Either Output
Single to Dual Output
Input-Case
Either Output to Case
10µA Leakage
Input to Output Capacitance
Input to Single Output
Input to Dual Output
Single to Dual Output
MIN
MIN
MIN
MIN
1544
700
250
VDC
pF
1544
BOTTOM VIEW
TYP
TYP
TYP
100
150
75
Environmental
Case Operating Range
No Derating
MIN
MAX
MIN
MAX
MIN
-25
80
-40
90
-40
100
°C
°C
°C
Case Funtional Range (13)
Storage Range
MAX
Chassis Mount Option (-CM suffix)
Thermal Impedance (14)
Pin Mount Version
Option -HS (Heat Sink)
Option -CM (Chassis
Mount)
TYP
TYP
2.7
1.8
(14)
°C/Watt
Thermal Shutdown
Case Temperature
TYP
90
°C
General
Unit Weight
Mounting Kits
14
oz.
See Case Options
(11) For module protection only, see also note 3.
(12) The ON/OFF pin is Open Collector TTL, CMOS, and relay
compatible. The input to this pin is referenced to -Input (pin 2).
(13) Thefunctionaltemperaturerangeisintendedtogiveanadditional
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.
A
(14) Thecasethermalimpedanceisspecifiedasthecasetemperature
rise over ambient per package watt dissipated. The thermal
resistanceoftheChassisMountversiondependsonthemounting
surface. If the mounting surface is a poor thermal conductor the
thermal resistance can be as high as 2.7° C/watt. If the mounting
surface is an excellent thermal conductor the thermal resistance
can be below 1°C/watt.
Mechanical tolerances unless otherwise noted:
X.XX dimensions: ±0.020 inches
X.XXX dimensions: ±0.005 inches
Seal around terminals is not hermetic. Do not immerse units in any
liquid.
Pin
1
2
3
4
5
6
7
Function
NO PIN
-INPUT
-INPUT
+INPUT
+INPUT
ON/OFF
CASE
Pin
8
9
10
11
12
13
14
Function
+5V CMN SENSE
+5V CMN
+5V OUTPUT
+5V SENSE
-DUAL OUTPUT
DUAL CMN
+DUAL OUTPUT
Mounting Configuration Options
To order the optional heat sink on the pin mount version place
a “-HS” suffix on the part number. To order the chassis mount
version place a “-CM” suffix on the part number. The heat sink
and chassis mount options cannot be used together.
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
55 Watt K Triple Series DC/DC Converters
Dual Output
Application Guidelines
Inputs
The dual outputs are cross regulated to each other but
independent of the loading on the single output. The dual
The input should be fused as per note number 3. The case is
connected to the -INPUT pins through 1.5 Megohms in
parallel with 0.01µF. The case may be left floating in most
applications. The noise performance of the converter may
improve or degrade with the case connected to other inputs or
outputs depending on your system grounding.
output uses a cross regulation scheme where the plus and
minus output voltage is regulated as an average voltage. This
allows improved regulation on both outputs. If the outputs are
loadedequallyandtheregulationischecked,thentheapparent
regulation is much closer to 0.5%. This data shows the worst
case result of changing each output independently. The
outputcommononthedualsectioniselectricallyisolatedfrom
the +5 volt section to aid in proper system grounding. If 24
volts or 30 volts are required, then the appropriate output can
be connected to the system ground and the output current can
be taken from the other output. In this situation the dual
section’s common pin (Pin 13) should be left unconnected.
Full output power (30 watts) is available in this configuration.
Figure 3 shows the dual output connections.
The remote ON/OFF pin may be left floating if it is not used.
See“UnderstandingtheRemoteON/OFFFunction”application
note for more information on this feature.
The dual input pins (2,3 and 4,5) should be paralleled to
share the input current. Figure 1 shows the recommended
input connections.
FUSE
4
+INPUT
5
+DUAL OUTPUT 14
+LOAD
SOURCE
2
-INPUT
3
DUAL CMN
13
-LOAD
Figure 1.
Parallel both + and -INPUT pins. Fusing the input is recommended.
-DUAL OUTPUT 12
Single Output
Figure 3.
The single output is independent of the loading on the dual
output section. The single output also features provisions for
remote sense connections. These allow the power supply to
correct for line drops of up to 0.3 volts per leg or 0.6 volts total.
The remote sense connections should be made with twisted
pairwireorcloselycoupledPCBtraces.Thereisapproximately
2mA of current flowing in the remote sense lines. If the remote
sense is not to be used, these pins must be connected to their
respective output pins for proper output voltage accuracy and
regulation. See “Applying the Remote Sense and Trim
Functions On DC/DC Converters” application note for more
information. The output common on the single section is
electrically isolated from the dual section to aid in proper
system grounding. Figure 2 shows the single output
connections with remote sense.
The dual outputs can also be used with substantial unbalance and
as single-ended outputs by leaving Pin 13 unconnected.
Mounting Guidelines
The55WattTripleSeriescanbesuppliedineitherapinmount
version or a chassis mount (screw terminal) version. It is
suggested that when using the pin mount version, the 4-40
hold down screws provided in the bottom of the case be used
to secure the unit to the PCB. These screws should be
tightened before soldering to avoid solder joint stress.
The chassis mount version can be mounted on its back
A
with the four 4-40 hold down screws provided. The mounting
surface should be flat to within 0.01 inches to prevent warping
the case. The mounting can then serve as additional heat
sinking. For optimum heat sinking, silicone grease is
recommended over the so called “dry pads.” Additional heat
sinking will lower internal temperatures and increase the
expected life. When chassis mounting remember that the
case is connected to the - INPUT pins through 1.5 Megohms
in parallel with 0.01µF. The breakthrough voltage of this
connection is greater than 250VDC.
+5V OUTPUT 10
+5V SENSE
11
LOAD
+5V CMN SENSE
+5V CMN
8
9
The “-HS” heat sink option lowers the thermal resistance
from 2.7 to 1.8°C/Watt dissipated. It also increases the heat
removingefficiencyofanycoolingairflow. Ifthe55WattTriple
is to be placed in a small enclosure where the power delivered
to the load or the power dissipated in the 55 Watt Triple
converter can raise the ambient temperature then care must
be taken to insure that the case temperature does not exceed
the 80°C limit for proper operation.
Figure 2.
The remote sense pins must be connected to their respective
outputs. If the remote sense feature is not used, connect the sense
pins to their outputs directly at the converter.
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
4
55 Watt K Triple Series DC/DC Converters
Typical Performance (Tc=25°C, Vin=48 VDC, Rated Load).
12T5.XXK EFFICIENCY Vs. LOAD
12T5.XXK EFFICIENCY Vs. LINE INPUT
86
84
82
80
78
76
74
72
70
85
84
83
82
81
80
79
78
LINE = 12VDC
50% FULL LOAD
LINE =
9VDC
100% FULL LOAD
LINE =
18VDC
10
20
30
40
50
60
70
80
90
100
9
10
11
12
13
14
15
16
17
18
LOAD (%)
LINE INPUT (VOLTS)
12T5.XXK INPUT CURRENT Vs. LINE INPUT VOLTAGE
24T5.XXK EFFICIENCY Vs. LOAD
9
8
7
6
5
4
3
2
1
0
90
85
80
75
70
65
LINE = 24VDC
LINE = 18VDC
100% FULL LOAD
50% FULL LOAD
LINE = 36VDC
6
8
10
12
14
16
18
10
20
30
40
50
60
70
80
90
100
LINE INPUT (VOLTS)
LOAD (%)
24T5.XXK EFFICIENCY Vs. LINE INPUT
24T5.XXK INPUT CURRENT Vs. LINE INPUT VOLTAGE
87
86
85
84
83
4.0
3.0
2.0
1.0
0.0
50% FULL LOAD
A
100% FULL LOAD
50% FULL LOAD
100% FULL LOAD
18
20
22
24
26
28
30
32
34
36
5
10
15
20
25
30
35
40
LINE INPUT (VOLTS)
LINE INPUT (VOLTS)
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
5
55 Watt K Triple Series DC/DC Converters
Typical Performance (Tc=25°C, Vin=48 VDC, Rated Load).
48T5.XXK EFFICIENCY Vs. LOAD
48T5.XXK EFFICIENCY Vs. LINE INPUT
90
85
80
75
70
65
60
88
87
86
85
84
83
82
81
LINE =
36VDC
100% FULL LOAD
LINE =
48VDC
LINE =
72VDC
50% FULL LOAD
10
20
30
40
50
60
70
80
90
100
35
40
45
50
55
60
65
70
75
140
1M
LOAD (%)
LINE INPUT (VOLTS)
5 VOLT OUTPUT VOLTAGE Vs. OUTPUT LOAD
48T5.XXK INPUT CURRENT Vs. LINE INPUT VOLTAGE
2.5
2.0
1.5
1.0
0.5
0.0
120
100
80
60
40
20
0
100% FULL LOAD
50% FULL LOAD
0
10
20
30
40
50
60
70
80
0
20
40
60
80
100
120
LINE INPUT (VOLTS)
OUTPUT LOAD (%)
DUAL OUTPUT VOLTAGE Vs. OUTPUT LOAD
OUTPUT IMPEDANCE Vs. FREQUENCY
120
100
80
60
40
20
0
1
.1
+/-DUAL OUTPUT
5V OUTPUT
A
.01
.001
0
50
100
150
200
250
300
350
10
100
1K
10K
100K
OUTPUT LOAD (%)
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
6
55 Watt K Triple Series DC/DC Converters
Typical Performance (Tc=25°C, Vin=48 VDC, Rated Load).
DUAL OUTPUT VOLTAGE Vs CASE TEMPERATURE
5 VOLT OUTPUT Vs CASE TEMPERATURE
0.15
0.10
0.15
0.10
MINUS OUTPUT
0.05
0.05
PLUS OUTPUT
+5V OUTPUT
-0.00
-0.05
-0.10
-0.15
-0.20
-0.25
-0.30
-0.35
-0.00
-0.05
-0.10
-0.15
-0.20
-0.25
-0.30
-0.35
-30
-20
-10
0
10
20
30
40
50
60
70
80
-30
-20
-10
0
10
20
30
40
50
60
70
80
CASE TEMPERATURE (Deg C)
CASE TEMPERATURE (Deg C)
DERATING
120
100
80
â
INFINITE
NO HEAT
HEAT
SINK
SINK
60
á
40
ß
SAFE OPERATING
AREA
à
20
â
0
-40
-20
0
20
40
60
80
100
AMBIENT TEMPERATURE (Deg C)
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
7
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