3 Watt
2:1 & 4:1
DIP24
Single and Dual
Output
Features
Regulated
Converter
• Reinforced insulation for 250VAC working voltage
• Clearance and creepage distance: 8mm
• 5kVAC I/P to O/P 2MOPP isolation
• 2µA patient leakage current
• Industry standard pinout
• 2:1 and 4:1 wide input range REM3
DC/DC Converter
www.recom-power.com REV.: 10/2018 MED-1
2MOPP
250VAC
E314885
IEC/EN60601-1 certified
CSA/CAN C22.2 60601-01 certified
ANSI/AAMI ES60601-1 certified
EN55011 certified
Description
The REM3 series of medical grade regulated DC/DC converters features reinforced 5kVAC/1 minute
isolation with low 2µA leakage and are 60601-1 3rd Ed. certified for 250VAC continuous working. The
compact DIP24 package offers tightly regulated single and dual outputs, even under no-load condi-
tions. The outputs are short circuit and overload protected. The converters are available in two different
pinning options and optionally with an external control pin for standby consumption as low as 12.5mW.
The converters are fully certified to CB, IEC/EN and ANSI/AAMI standards and carry the UL mark.
CTRL Option (4)
Pinning (3)
Input Type (2)
Output Power
Input Voltage (1)
Output Voltage
Single or Dual
Model Numbering
REM 3- __ __ __ __ / __ __
Notes:
Note1: for 4:1 Input Voltage Type add “W”, see Note 2.
2:1 nom. Vin 4:1 “W” nom. Vin
xx= 4.5-9 Vin = “05” xx= 9-36Vin = “24”
xx= 9-18Vin = “12” xx= 18-75Vin = “48”
xx= 18-36Vin = “24”
xx= 36-75Vin = “48”
Note2: Blank for Standard 2:1 Input Voltage Range; „W“ suffix for 4:1 Input Voltage Range
Note3: „A“ suffix for A pinning; „C“ suffix for C pinning, for more details refer to Package Style and Pinning
Note4: „CTRL“ suffix for control pin option, for A pinning only, for C pinning not available
Examples:
REM3-0512D/A = 2:1 Input, 4.5-9Vin, ±12Vout, pinout „A“, without control pin
REM3-1215S/C = 2:1 Input, 9-18Vin, 15Vout, pinout „C“, without control pin
REM3-4815SW/A/CTRL = 4:1 Input, 36-75Vin, 15Vout, pinout „A“ with control pin
REM3-243.3SW/C = 4:1 Input, 9-36Vin, 3.3Vout, pinout „C“, without control pin
Selection Guide
Part nom. Input Output Output Efficiency Max. Capacitive
Number Voltage
(1) Voltage Current typ. Load
[VDC] [VDC] [mA] [%] [µF]
REM3-xx3.3S/ (3,4) 5 / 12 / 24 / 48 3.3 1000 81 /82 /82 / 81 1050
REM3-xx05S/ (3,4) 5 / 12 / 24 / 48 5 600 84.5 / 84.5 / 84.5 / 84 780
REM3-xx12S/ (3,4) 5 / 12 / 24 / 48 12 250 85.5 / 87 / 87 / 87 130
REM3-xx15S/ (3,4) 5 / 12 / 24 / 48 15 200 87.5 / 87 / 87 / 86.5 100
REM3-xx24S/ (3,4) 5 / 12 / 24 / 48 24 125 85.5 / 87 / 87 / 86.5 39
REM3-xx05D/ (3,4) 5 / 12 / 24 / 48 ±5 ±300 83 / 83.5 / 83 / 83 ±430
REM3-xx12D/ (3,4) 5 / 12 / 24 / 48 ±12 ±125 86 / 87.5 / 86 / 86 ±75
REM3-xx15D/ (3,4) 5 / 12 / 24 / 48 ±15 ±100 86 / 86.5 / 86 / 86 ±56
REM3-xx3.3SW/ (3,4) 24 / 48 3.3 1000 82 /81 1050
REM3-xx05SW/ (3,4) 24 / 48 5 600 84.5 / 84 750
REM3-xx12SW/ (3,4) 24 / 48 12 250 87 / 87 130
REM3-xx15SW/ (3,4) 24 / 48 15 200 87 / 86.5 100
REM3-xx24SW/ (3,4) 24 / 48 24 125 87 / 86.5 39
REM3-xx05DW/ (3,4) 24 / 48 ±5 ±300 83 / 83 ±430
REM3-xx12DW/ (3,4) 24 / 48 ±12 ±125 87 / 86 ±75
REM3-xx15DW/ (3,4) 24 / 48 ±15 ±100 86 / 86 ±56
www.recom-power.com REV.: 10/2018 MED-2
DC/DC Converter
Specifications (measured @ Ta= 25°C, nominal input voltage, full load and after warm-up)
REM3
Series
BASIC CHARACTERISTICS
Parameter Condition Min. Typ. Max.
Absolute Maximum Input Voltage
( 3sec max.)
2:1
5Vin nom.
12Vin nom.
24Vin nom.
48Vin nom.
16VDC
25VDC
50VDC
100VDC
4:1 24Vin nom.
48Vin nom.
50VDC
100VDC
Under Voltage Lockout
2:1
5Vin nom.
12Vin nom.
24Vin nom.
48Vin nom.
4VDC
8VDC
16VDC
33VDC
4.5VDC
9VDC
18VDC
36VDC
4:1 24Vin nom.
48Vin nom.
8VDC
16VDC
9VDC
18VDC
Start-up Time constant resistive load, Power up or Remote ON/OFF 30ms
Remote ON/OFF
(referenced to -Vin Pin)
DC-DC ON
DC-DC OFF
Open or 0-1.2VDC
2.2-12VDC
Current of CTRL Pin -0.5mA 1mA
Remote OFF Input Current 2.5mA
Internal Operating Frequency 135kHz 150kHz 165kHz
Output Ripple and Noise
(20MHz BW limited)
10µF/25V X7R MLCC for 3.3, 5Vout
10µF/25V X7R MLCC for 12, 15Vout
4.7µF/50V X7R MLCC for 24Vout
30mVp-p
40mVp-p
50mVp-p
REGULATIONS
Parameter Condition Type Value
Output Accuracy ±1.0%
Line Regulation low line to high line Single
Dual
±0.2%
±0.5%
Load Regulation no load to full load Single
Dual
0.2%
1.0%
Cross Regulation asymmetrical load 25% / Full Load only Dual Output ±5.0%
Transient Response 25% load step change 250µs
10 20 30 40 50 60 70 80 90 100
Load [%]
Efficiency [%]
50
40
30
20
10
0
60
70
80
90
100
Efficiency vs. Load
www.recom-power.com REV.: 10/2018 MED-3
DC/DC Converter
Specifications (measured @ Ta= 25°C, nominal input voltage, full load and after warm-up)
REM3
Series
Notes:
Note5: This Power module is not internally fused. A input line fuse must be always used.
Recomended Fuse:
2:1 Input Voltage Fuse (slow blow)
5V T1.25A
12V T0.63A
24V T0.315A
48V T0.315A
4:1 Input Voltage Fuse (slow blow)
24V T0.63A
48V T0.315A
PROTECTIONS
Parameter Condition Type Value
Short Circuit Protection (SCP) continuous, auto-recovery
Over Load Protection (OLP) % of Iout rated Hiccup mode, 150% typ.
Output Over Voltage Protection (OVP)
3.3Vout
5Vout
Single 12Vout
15Vout
24Vout
3.7VDC min. / 5VDC max.
5.6VDC min. / 7VDC max.
13.5VDC min. / 16VDC max.
18.3VDC min. / 22VDC max.
29.1VDC min. / 34.5VDC max.
5Vout
Dual 12Vout
15Vout
5.6VDC min. / 7VDC max.
13.5VDC min. / 18.2VDC max.
17VDC min. / 22VDC max.
Isolation Voltage I/P to O/P
working voltage
5kVAC / 1 minute
250VAC / continuous
Isolation Capacitance 12pF typ. / 17pF max.
Leakage Current 240VAC, 60Hz 2µA
Insulation Grade reinforced
Means of Protection 2MOPP
Medical Device Classification built-in power supply
Internal Clearance and Creepage I/P to O/P ≥8mm
External Clearance and Creepage I/P to O/P “C” Pinning
“A” Pinning
>19.72mm
>14.64mm
ENVIRONMENTAL
Parameter Condition
Value
Maximum Case Temperature Range
Maximum Ambient Temperature Range
-40°C to +105°C
see thermal calculation below
Temperature Coefficient 0.02%/K typ.
Thermal Impedance natural convection 0.1m/s 18K/W
Operating Altitude 5000m
Operating Humidity non-condensing 5% - 95% RH max.
Pollution Degree PD2
MTBF according to MIL-HDBK-217F, G.B. +25°C 6444 x 103 hours
Thermal Shock according to MIL-STD-810F standard
Vibration according to MIL-STD-810F standard
continued on next page
www.recom-power.com REV.: 10/2018 MED-4
DC/DC Converter
Specifications (measured @ Ta= 25°C, nominal input voltage, full load and after warm-up)
REM3
Series
SAFETY AND CERTIFICATIONS
Certificate Type (Safety) Report / File Number Standard
Medical Electric Equipment, General Requirements for Safety and Essential Perfor-
mance E314885-A6-CB-1 CAN/CSA-C22.2 No. 60601-1:08
ANSI/AAMI ES60601-1:2005
Medical Electric Equipment, General Requirements for Safety and Essential Perfor-
mance (CB Scheme) E314885-A6-CB-1 IEC60601-1:2005 + C2:2007 3rd Edition
EN60601-1:2006
EAC RU-AT.49.09571 TP TC 004/2011 TP TC 004/2011
RoHS2+ RoHS-2011/65/EU + AM-2015/863
continued on next page
Thermal Calculation:
Pdiss =Pout set - Pout set
hset
Pdiss =1.5 - 1.5 = 0.25W
0.856
Efficiency Factor vs. LoadEfficiency Crosstable (%) @ full Load
Load [%]
Efficiency Factor [ ]
100 20 30 40 50 60 70 80 90 100
0.0
0.2
0.4
0.6
0.8
1.2
1.0
Input Voltage
5 12 24 48 24W 48W
Output Voltage
3.3S 81 82 82 81 82 81
05S 84.5 84.5 84.5 84 84.5 84
12S 85.5 87 87 87 87 87
15S 87.5 87 87 86.5 87 86.5
24S 85.5 87 87 86.5 87 86.5
05D 83 83.5 83 83 83 83
12D 86 87.5 86 86 87 86
15D 86 86.5 86 86 86 86
Tamb =Tcase - Tover
hset =87.5 x 0.98 85.75%
Tover =Rth x Pdiss
Tamb =105 - 4.5 = +100.5°C
Tover =18 x 0.25 = +4.5°C
Practical Example:
Tcase = 105°C
Pout nom. = 3W
Pout set = 3 x 0.5 = 1.5W
Rth = 18K/W
hfull load = 87.5% (Crosstable)
fh = 0.98 (Graph)
hset =hfull load x fh
Tcase = baseplate temperature [°C]
Tover = temperature losses [°C]
Tamb = ambient temperature [°C]
Pout nom. = nom. output power [W]
Pout set = output power set [W]
Pdiss = internal losses [W]
Rth = thermal impedance [K/W]
hset = efficiency set [%]
hfull load = efficiency @ full load [%]
fh = efficiency factor [ ]
Take the REM3-1212D with 12V Input Voltage, 50% load.
What is the maximum ambient operating temperature?
www.recom-power.com REV.: 10/2018 MED-5
DC/DC Converter
Specifications (measured @ Ta= 25°C, nominal input voltage, full load and after warm-up)
REM3
Series
Certificate Type (Others) Conditions Standard / Criterion
Medical electrical equipment - Part 1-2: General requirements for basic safety and essential
performance - Collateral standard: Electromagnetic compatibility - Requirements and tests
EN60601-1-2:2015
Industrial, scientific and medical equipment - Radio frequency disturbance character-
istics - Limits and methods of measurement (7) EN55011:2009 + A1:2010 Class A & B
ESD Electrostatic discharge immunity test Air ±15kV; Contact ±8kV EN61000-4-2:2008
Radiated, radio-frequency, electromagnetic field immunity test
10V/m (80-2500MHz)
27V/m (385MHz)
28V/m (450MHz)
EN61000-4-3:2006 + A2:2010
Fast Transient and Burst Immunity (6) DC Port: ±2kV EN61000-4-4:2012
Surge Immunity (6) DC Port: ±2kV EN61000-4-5:2005
Immunity to conducted disturbances, induced by radio-frequency fields 6Vr.m.s EN61000-4-6:2013
Power Frequency Magnetic Field 30A/m EN61000-4-8:2009
Notes:
Note6: An external input filter capacitor is required if the model has to meet EN61000-4-4 or/and EN61000-4-5
Recommended components: 5Vin aluminium capacitor (Nippon Chemi-con KY series, 1000µF/25V) and a
reverse diode (Vishay V10P45) to connect in parallel
12Vin, 24Vin aluminium capacitor (Nippon Chemi-con KY series, 470µF/50V)
48Vin aluminium capacitor (Nippon Chemi-con KY series, 330µF/100V)
Note7: The whole REM3 series can meet EMI Class A with no external filter. And Class B only with external components
EMC Filter Suggestion for Class B (8)
C1 C2
+Vin
-Vin
+Vout
-Vout
+Vin
-Vin
+Vout
-Vout
L1
MODEL C1 (8) C2 (8) L1 (8)
REM3-05xxS_D 22µF/16V MLCC 22µF/16V MLCC 137µH CMC
REM3-12xxS_D
REM3-24xxS_D(/W) 4.7µF/50V MLCC 4.7µF/50V MLCC 277µH CMC
REM3-48xxS_D(/W) 2.2µF/100V MLCC 1µF/100V MLCC 175µH CMC
DIMENSION and PHYSICAL CHARACTERISTICS
Parameter Type Value
Material
case
PCB
potting
non-conductive black plastic (UL94-V2)
FR4 (UL94-V1)
silicone (UL94-V0)
Dimension (LxWxH) 31.80 x 20.30 x 10.40mm
Weight 14g
continued on next page
Notes:
Note8: The component values can be adapted according to customer´s application
www.recom-power.com REV.: 10/2018 MED-6
DC/DC Converter
Specifications (measured @ Ta= 25°C, nominal input voltage, full load and after warm-up)
REM3
Series
3.80
6x2.54=15.24
31.8
embossed logo
20.3
2.00
Ø0.60+0.10 / -0.05
2.54
2.54
1 2
23 22 16 14
23 22 16 14
11
1 2 11
Bottom View
2.54
Ø0.90 +0.10/-0
Top View
10.4
clearance = 14.64
Dimension Drawing (mm)
“C” Pinning
“A” Pinning (Standard)
Recommended Footprint Details
Recommended Footprint Details
3.80
6x2.54=15.24
31.8
embossed logo
20.3
2.00 clearance = 19.72
2.54
2.54
1
24 23 15 13
11 12
1
24 23 15 13
11 12
Bottom View
2.54
Ø0.90 +0.10/-0
Top View
Ø0.60+0.10 / -0.05
10.4
Pin Connections
Pin # Single Dual
1 +Vin +Vin
11 No Pin Com
12 -Vout No Pin
13 +Vout -Vout
15 No Pin +Vout
23 -Vin -Vin
24 -Vin -Vin
Tolerance: xx.x= ±0.5mm
xx.xx= ±0.25mm
Pin Connections
Pin # Single Dual
1 CTRL* CTRL*
2 -Vin -Vin
11 NC -Vout
14 +Vout +Vout
16 -Vout Com
22 +Vin +Vin
23 +Vin +Vin
* If don´t choose CTRL option, there is
no pin on the corresponding pin number
NC= not connected
Tolerance: xx.x= ±0.5mm
xx.xx= ±0.25mm
www.recom-power.com REV.: 10/2018 MED-7
DC/DC Converter
Specifications (measured @ Ta= 25°C, nominal input voltage, full load and after warm-up)
REM3
Series
PACKAGING INFORMATION
Parameter Type Value
Packaging Dimension (LxWxH) tube 255 x 21.8 x 16.5mm
Packaging Quantity 7pcs
Storage Temperature Range -55°C to +125°C
Stoarge Humidity non-condensing 5% to 95% RH max.
Tube Dimension Drawing (mm)
21.8±0.75
11±0.75
0.5±0.2
16.5±0.75
11.5±0.75
The product information and specifications may be subject to changes even without prior written notice.The product has been designed for various applications; its suitability lies in the responsibility of each customer. The
products are not authorized for use in safety-critical applications without RECOM’s explicit written consent. A safety-critical application is an application where a failure may reasonably be expected to endanger or cause
loss of life, inflict bodily harm or damage property. The applicant shall indemnify and hold harmless RECOM, its affiliated companies and its representatives against any damage claims in connection with the unauthorized
use of RECOM products in such safety-critical applications.
