A200RI/A300RI Series
2W & 3W, High Isolation
Single & Dual Output
DC/DC Converters
Electrical Specifications
Input
Key Features: Parameter Conditions Min. Typ. Max. Units
5 VDC Input 4.75 5.0 5.25
· 2W/3W Output Power 12 VDC Input 10.8 12.0 13.2
Input Voltage Range VDC
· 3,000 VDC Isolation 24 VDC Input 21.6 24.0 26.4
· High MTBF 48 VDC Input 43.2 48.0 52.8
Input Filter (Pi) Filter
· Tightly Regulated
Reverse Polarity Input Current 0.5 A
· Single & Dual Outputs Short Circuit Input Power 2,500 mW
· LOW COST! Output
Parameter Conditions Min. Typ. Max. Units
Output Voltage Accuracy ±2.0 ±4.0 %
Output Voltage Balance Dual Output , Balanced Loads ±1.0 ±3.0 %
Line Regulation Vin = Min to Max ±0.2 ±0.5 %
Load Regulation Iout = 10% to 100% ±0.2 ±0.5 %
Ripple & Noise (20 MHz) (Note 2) 40 50 mV P - P
Ripple & Noise (20 MHz) Over Line, Load & Temp. 75 mV P - P
Ripple & Noise (20 MHz) 5 mV rms
Output Power Protection 120 %
Transient Recovery Time (Note 3) 50 µSec
50% Load Step Change
Transient Response Deviation ±6.0 %
Temperature Coefficient ±0.01 ±0.02 %/°C
Output Short Circuit Continuous
General
Parameter Conditions Min. Typ. Max. Units
Isolation Voltage 60 Seconds 3,000 VDC
Isolation Test Voltage Flash Tested For 1 Sec. 3,300 VDC
Isolation Resistance 500 VDC 1,000 M
Isolation Capacitance 100 kHz, 1V 50 100 pF
Switching Frequency 40 80 kHz
Environmental
Parameter Conditions Min. Typ. Max. Units
Operating Temperature Range -25 +71 °C
Operating Temperature Range Case -25 +90 °C
Storage Temperature Range -40 +125 °C
Cooling Free Air Convection
Humidity RH, Non-condensing 95 %
Physical
Case Size 1.25 x 0.80 x 0.40 Inches (31.8 x 20.3 x 10.2 mm)
Case Material Non-Conductive Black Plastic
MicroPower Direct Weight 0.42 Oz (12g)
232 Tosca Drive
Reliability Specifications
Stoughton, MA 02072
Parameter Conditions Min. Typ. Max. Units
USA
MTBF MIL HDBK 217F, 25°C, Gnd Benign 800 kHours
Absolute Maximum Ratings
Parameter Conditions Min. Typ. Max. Units
5 VDC Input -0.7 7.5
12 VDC Input -0.7 15.0
Input Voltage Surge (1 Sec) VDC
24 VDC Input -0.7 30.0
48 VDC Input -0.7 55.0
Lead Temperature 1.5 mm From Case For 10 Sec 260 °C
Internal Power Dissipation All Models 3,000 mW
Specifications typical @ +25°C, nominal input voltage & rated output current, unless otherwise noted. Specifications subject to change without notice.
CompuMess Elektronik GmbH · Lise-Meitner-Str.1 · 85716 Unterschleissheim
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Model Selection Guide - A200RI/A300RI Series
Input Output
Voltage (VDC) Current (mA) Fuse Rating
Model Reflected Efficiency
Voltage Current Current Slow-Blow
Number Ripple Current (%, Typ)
Nominal Range Full-Load No-Load (VDC) (mA, Max) (mA, Min) (mA)
(mA, Typ)
A201RI 5 4.75 - 5.25 666 100 70 5.0 400 0.0 60 1,000
A202RI 5 4.75 - 5.25 628 100 70 12.0 165 0.0 63 1,000
A203RI 5 4.75 - 5.25 633 100 70 15.0 133 0.0 63 1,000
A204RI 5 4.75 - 5.25 642 100 70 ±12.0 ±83 ±0.0 62 1,000
A205RI 5 4.75 - 5.25 639 100 70 ±15.0 ±66 ±0.0 62 1,000
A211RI 12 10.8 - 13.2 277 50 30 5.0 400 0.0 60 750
A212RI 12 10.8 - 13.2 262 50 30 12.0 165 0.0 63 750
A313RI 12 10.8 - 13.2 397 50 30 15.0 200 0.0 63 750
A214RI 12 10.8 - 13.2 268 50 30 ±12.0 ±83 ±0.0 62 750
A315RI 12 10.8 - 13.2 403 50 30 ±15.0 ±100 ±0.0 62 750
A221RI 24 21.6 - 26.4 138 25 15 5.0 400 0.0 60 350
A222RI 24 21.6 - 26.4 131 25 15 12.0 165 0.0 63 350
A323RI 24 21.6 - 26.4 198 25 15 15.0 200 0.0 63 350
A224RI 24 21.6 - 26.4 134 25 15 ±12.0 ±83 ±0.0 62 350
A325RI 24 21.6 - 26.4 202 25 15 ±15.0 ±100 ±0.0 62 350
A231RI 48 43.2 - 52.8 69 15 10 5.0 400 0.0 60 135
A232RI 48 43.2 - 52.8 66 15 10 12.0 165 0.0 63 135
A333RI 48 43.2 - 52.8 99 15 10 15.0 200 0.0 63 135
A234RI 48 43.2 - 52.8 67 15 10 ±12.0 ±83 ±0.0 62 135
A335RI 48 43.2 - 52.8 101 15 10 ±15.0 ±100 ±0.0 62 135
Notes:
1. Exceeding the absolute maximum ratings of the unit Derating Curves - Single Output Models
could cause damage. These are not continuous operat- 100
ing ratings.
80
2. When measuring output ripple, it is recommended
Output Power %
that an external 0.33 µF ceramic capacitor be placed
from the +Vout pin to the -Vout pin for single output 60
units and from each output to common for dual
output units.
40
3. Transient recovery is measured to within a 1% error
band for a load step change of 50% to 100%.
20
4. Operation at no-load will not damage these units.
However, they may not meet all specifications. 0
-40 -20 0 15 30 55 60 65 70 75 80 85 90 95
5. Dual output units may be connected to provide a Ambient Temperature (°C)
24 VDC or 30 VDC output. To do this, connect the load
across the positive (+Vout) and negative (-Vout) outputs Free Air 100 LFM 200 LFM 400 LFM
and float the output common.
6. The converter should be connected to a low ac-imped-
Derating Curves - Dual Output Models
100
ance source. An input source with a highly inductive
impedance may affect the stability of the converter.
80
In applications where the converter output loading is
Output Power %
high and input power is supplied over long lines, it may
be necessary to use a capacitor on the input to insure
60
start-up.
In this case, it is recommended that a low Equivalent 40
Series Resistance (ESR <1.0 at 100 kHz) capacitor
be mounted close to the converter. For 5VDC input
units, a 2.2 µF capacitor should be used; for 12 VDC 20
input units a 1.0 µF; and for 24 and 48 VDC input units
a 0.47 µF.
0
7. It is recommended that a fuse be used on the input of -40 -20 0 20 40 55 60 65 70 75 80 85 90 95
a power supply for protection. See the table above for Ambient Temperature (°C)
the correct rating.
Free Air 100 LFM 200 LFM 400 LFM
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CompuMess Elektronik GmbH · Lise-Meitner-Str.1 · 85716 Unterschleissheim
Tel 089-321501-0 · Fax 089-321501-11 · www.compumess.de · www.netzteile.de
A200RI/A300RI Series
2W & 3W, Low Cost, High Isolation DC/DC Converters
Efficiency vs Input Voltage (Single Output Models) Efficiency vs Input Voltage (Dual Output Models)
80 80
70 70
Efficiency %
Efficiency %
60 60
50 50
40 40
30 30
Low Nom High Low Nom High
Input Voltage (V) Input Voltage (V)
Efficiency vs Output Load (Single Output Models) Efficiency vs Output Load (Dual Output Models)
70 80
60 70
50 60
Efficiency %
Efficiency %
40 50
30 40
20 30
10 20
10 20 40 60 80 100 10 20 40 60 80 100
Load Current (%) Load Current (%)
Thermal Measurement
Position of air velocity
probe and Air
thermocouple Flow
MicroPower Direct 2.0 In
(50.8 mm)
232 Tosca Drive
Stoughton, MA 02072
USA 0.6 In
(15.0 mm)
A number of factors affect the thermal performance of the converter, including mounting orientation,
component spacing, airflow over the unit, etc. To avoid exceeding the maximum rated temperature of
internal components, the case temperature of the converter must be kept below 90°C.
The derating curves given in this datasheet have been derived using a converter operating at full load
and nominal input. Temperature measurements have been made as shown above.
CompuMess Elektronik GmbH · Lise-Meitner-Str.1 · 85716 Unterschleissheim
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Output Noise
When using this series in a noise sensitive
+Vin +Vout application, it is recommended that an external
capacitor be connected as shown in the draw-
Load
ing at left.
A200RI For the A200RI/A300RI, a low ESR 1.5 µF
Single Output 1.5 µF capacitor connected as close as possible to the
load is recommended.
-Vin -Vout
+Vin +Vout
Load
1.5 µF
A200RI
Dual Output Comm
1.5 µF
Load
-Vin -Vout
Capacitive Load
Models (Vout) 5V 12V 15V ±12V ±15V Units
Max. Capacitive Load 470 470 470 ±220 ±220 µF
Having excessive capacitive load in a power supply application may cause start up problems. If the specified capacitive load is exceeded,
the converter may go into current limit on start-up.
Notes:
1. For dual output units, capacitive load is specified for each output.
Pin Connections
Mechanical Dimensions Pin Single Dual
0.40
0.80 (20.3) 1, 2 +Vin +Vin
(10.2)
0.15 0.10
10, 11 NC Common
0.60 (15.2)
(3.8) (2.54) 12 -Vout NC
13 +Vout -Vout
12 13 14 NC NC
11 14 15 NC +Vin
10 15 23, 24 -Vin -Vin
Notes:
· All dimensions are typical in inches (mm)
1.25 · Tolerance x.xx = ±0.01 (±0.25)
Side 0.02 DIA
(31.8) Bottom · Pin 1 is marked by a "dot" or indentation on the top of
(0.5)
the unit
· NC = No Connection
0.10 · Leads are tin plated for improved solderability.
(2.54)
0.08
(2.0) Flammability
2 23 All A200RI/A300RI converters are encapsulated in
1 24 a low thermal resistance molding compound that
has excellent resistance/electrical characteristics
over a wide temperature range or in high humidity
environments.
The encapsulant and unit case are both rated to UL
94V-0 flammability specifications.
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CompuMess Elektronik GmbH · Lise-Meitner-Str.1 · 85716 Unterschleissheim
Tel 089-321501-0 · Fax 089-321501-11 · www.compumess.de · www.netzteile.de