1.8 Watt Dual Series DC/DC Converters
Features Description
! Low Profile Case (0.375" High) These 1.8 Watt Dual DC/DC Converters are designed for high
performance Industrial data acquisition systems and board
! Low Noise Operation
level products. The converter consists of a rugged bipolar
! "LC" Section Input Filter to Reduce Reflected Ripple switching stage, isolation transformer, and high regulation
linear post regulator for low noise/highly stable DC outputs.
! Wide Input Voltage Range
! High Isolation Breakdown Voltage
(500 VDC Minimum)
! Long Term Output Fault Survival
! 100% Burn-In, 100% Tested
! 5 Year Warranty
Selection Chart
Input Range
VDC Outputs Outputs
Model
VDC mA
MIN MAX
5D12.075 4.60 5.50 ±12.0 ±75
5D15.060 4.60 5.50 ±15.0 ±60
12D12.075 10.80 13.80 ±12.0 ±75
12D15.060 10.80 13.80 ±15.0 ±60
1.8 Watt Dual Series Block Diagram
ISOLATION
TRANSFORMER POSITIVE A 3 + OUTPUT
REGULATOR
1µF
+ INPUT 1 LC BIPOLAR
INPUT PUSH-PULL 4 CMN
FILTER INVERTER
- INPUT 2
10µF
NEGATIVE 5 - OUTPUT
REGULATOR
BANDGAP REFERENCE
SIX-SIDED SHIELDED STEEL CASE
CompuMess Elektronik GmbH · Lise-Meitner-Str.1 · 85716 Unterschleissheim
Tel 089-321501-0 · Fax 089-321501-11 · www.compumess.de · www.netzteile.de
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1.8 Watt Dual Series DC/DC Converters
Input Parameters*
Model 5D12.075 5D15.060 12D12.075 12D15.060 Units
MIN 4.60 10.80
Voltage Range VDC
MAX 5.50 13.80
TYP 100 80
Reflected Ripple, 0-20MHz bw mA P-P
MAX 200 150
Input Current Full Load TYP 650 265
mA
No Load TYP 130 45
Efficiency TYP 55 57 %
Switching Frequency TYP 55 55 kHz
Maximum Input Overvoltage,
MAX 6.2 14.5 VDC
100ms No Damage
Turn-on Time, 1% Output Error (2) TYP 4 4 ms
Recommended Fuse Slow Blow Type (3)
Output Parameters*
Model 5D12.075 12D12.075 5D15.060 12D15.060 Units
Output Voltage ±12 ±15 VDC
MIN 0 0
Rated Load (4) mA
MAX ±75 ±60
MIN 11.88 14.85
Voltage Range
TYP 12.00 15.00 VDC
100% Load
MAX 12.12 15.15
Output Balance
MAX 1.0 %
(Plus to Minus Output, Full Load)
TYP 0.1
Load Regulation 0-100% Load %
MAX 0.2
Line Regulation TYP 0.1
%
Vin = Min-Max VDC MAX 0.2
Short Term Stability (5) TYP 0.1 %
Long Term Stability TYP 0.4 %/kHrs
Transient Response (6) TYP 100 µs
Dynamic Response (7) TYP 15 mV peak
Input Ripple Rejection (7) TYP 60 dB
TYP 15
Noise, 0-20MHz bw mV P-P
MAX 30
TYP 150
Temperature Coefficient ppm/°C
MAX 300
Short Circuit Protection to
Short Term, 1 Minute Maximum
Common for all Outputs
NOTES:
A
All parameters measured at Tc= 25° C, nominal input voltage (7) Dynamic response is the peak overshoot voltage during the
* and full rated load unless otherwise noted. Refer to the transient response as defined in note 6 above.
CALEX Application Notes for the definition of terms, (8) The functional temperature range is intended to give an additional
measurement circuits and other information. data point for use in evaluating this power supply. At the low
(2) Turn on time is defined as the time from the application of power functional temperature the power supply will function with no
until the output is within 1% if its final value. side effects, however sustained operation at the high functional
(3) Determine the correct fuse size by calculating the maximum DC temperature will reduce expected operational life. The data
current drain at low line input, maximum load (or use the supplied sheet specifications are not guaranteed over the functional
curves) and then adding 20 to 25% to get the desired fuse size. temperature range.
(4) No minimum load required. (9) The case thermal impedance is specified as the case temperature
rise over ambient per package watt dissipated.
(5) Short term stability is specified after a 30 minute warm-up at full
load and with constant line, load and ambient conditions.
(6) The transient response is specified as the time required for the
output to settle from a 100% step load change (rise time of step
= 2µ Sec) to a 1% error band.
CompuMess Elektronik GmbH · Lise-Meitner-Str.1 · 85716 Unterschleissheim
Tel 089-321501-0 · Fax 089-321501-11 · www.compumess.de · www.netzteile.de
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1.8 Watt Dual Series DC/DC Converters
General Specifications *
All Models Units
Isolation
Isolation Voltage
10µA Leakage MIN 500 VDC
Input-Output
Input to Output
TYP 30 pF
Capacitance
Environmental
Case Operating Range MIN -25
°C
No Derating MAX 80
MIN -30 BOTTOM VIEW SIDE VIEW
Case Functional Range (8) °C
MAX 90
MIN -55
Storage Range °C Mechanical tolerances unless otherwise noted:
MAX 100
Thermal Impedance (9) TYP 16.5 °C/Watt X.XX dimensions: ±0.020 inches
General X.XXX dimensions: ±0.005 inches
Unit Weight TYP 0.9 oz Seal around terminals is not hermetic. Do not immerse units in any
Mounting Kits MS6 & MS15 liquid.
Pin Function
1 +INPUT
2 -INPUT
3 +OUTPUT
4 CMN
Typical Performance (Tc=25°C; Full Rated Load).
5 -OUTPUT
5D EFFICIENCY Vs. LINE INPUT
65
100% FULL LOAD
60
EFFICIENCY (%)
55
50% FULL LOAD
50
45
40
35
4.6 4.8 5.0 5.2 5.4 5.6
LINE INPUT (VOLTS) A
5D EFFICIENCY Vs. LOAD 5D INPUT CURRENT Vs. LINE INPUT
70 0.7
0.6
INPUT CURRENT (AMPS)
60
LINE = 4.6VDC LINE = 5VDC 0.5
EFFICIENCY (%)
50 100% FULL LOAD
0.4
0.3
40
50% FULL LOAD
LINE = 5.5VDC
0.2
30
0.1
20 0.0
0 20 40 60 80 100 0 1 2 3 4 5 6
LOAD (%) LINE INPUT (VOLTS)
CompuMess Elektronik GmbH · Lise-Meitner-Str.1 · 85716 Unterschleissheim
Tel 089-321501-0 · Fax 089-321501-11 · www.compumess.de · www.netzteile.de
3
1.8 Watt Dual Series DC/DC Converters
Typical Performance (Tc=25°C; Full Rated Load).
12D EFFICIENCY Vs. LINE INPUT OUTPUT LOADING CHART
65 200
-Io +Io
-Io PERCENT OF FULL LOAD
60
150
100% FULL LOAD
EFFICIENCY (%)
55
50 100
45
50% FULL LOAD 50
40
35 0
10 11 12 13 14 0 50 100 150 200
LINE INPUT (VOLTS) +Io PERCENT OF FULL LOAD
12D EFFICIENCY Vs. LOAD OUTPUT VOLTAGE Vs CASE TEMPERATURE
70 0.8
LINE = 10.8VDC
0.6
NORMALIZED OUTPUT (%)
NEGATIVE OUTPUT
60
LINE = 12VDC 0.4
EFFICIENCY (%)
POSITIVE OUTPUT
0.2
50
0.0
40 -0.2
LINE = 13.8VDC
-0.4
30
-0.6
20 -0.8
0 20 40 60 80 100 -30 -20 -10 0 10 20 30 40 50 60 70 80
LOAD (%) CASE TEMPERATURE (Deg C)
12D INPUT CURRENT Vs. LINE INPUT OUTPUT IMPEDANCE Vs. FREQUENCY
0.30 1
POSITIVE OUTPUT
0.25
A
INPUT CURRENT (AMPS)
100% RATED LOAD
IMPEDANCE (OHMS)
NEGATIVE OUTPUT
0.20 .1
0.15
0.10 .01
50% RATED LOAD
0.05
0.00 .001
0 2 4 6 8 10 12 14 10 100 1K 10K 100K 1M
LINE INPUT (VOLTS) FREQUENCY (Hz)
CompuMess Elektronik GmbH · Lise-Meitner-Str.1 · 85716 Unterschleissheim
Tel 089-321501-0 · Fax 089-321501-11 · www.compumess.de · www.netzteile.de
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