The REM20-W series of medical grade regulated DC/DC converters features reinforced 5kVAC/1 minute
isolation with low 2µA leakage (B, BF and CF compatible) and are 60601-1 3rd Ed. certified for 250VAC
continuous working voltage isolation. The industry standard 1.6”x1” package offers tightly regulated
single and dual outputs, with low output ripple and zero-load operation. The outputs are also short circuit
and overload protected. The converters are certified to CB, IEC/EN and ANSI/AAMI standards and carry
the UL mark.
Selection Guide
Part
Number
REM20-2405SW
(3)
REM20-2412SW
(3)
REM20-2415SW
(3)
REM20-2424SW
(3)
REM20-4805SW
(3)
REM20-4812SW
(3)
REM20-4815SW
(3)
REM20-4824SW
(3)
Input
Voltage Range
[VDC]
9-36
9-36
9-36
9-36
18-75
18-75
18-75
18-75
9-36
9-36
9-36
18-75
18-75
18-75
Output
Voltage
[VDC]
5
12
15
24
5
12
15
24
±5
±12
±15
±5
±12
±15
Output
Current
[mA]
4000
1667
1333
833
4000
1667
1333
833
±2000
±833
±667
±2000
±833
±667
Efficiency
typ.
(1)
[%]
87
88.5
88
88
89.5
88
88
88.5
86
88
88
86
88.5
88
Max. Capacitive
Load
(2)
[µF]
5000
850
700
220
2500
500
350
5000
±850
±700
±220
±2500
±500
±350
REM20-2405DW
(3)
REM20-2412DW
(3)
REM20-2415DW
(3)
REM20-4805DW
(3)
REM20-4812DW
(3)
2MOPP
250VAC
E314885
REM20-4815DW
(3)
Notes:
Note1: Efficiency is tested at nominal input and full load at +25°C ambient
Note2: Max Cap Load is tested at nominal input and full resisitive load
UL60950-1 certified
CSA/CAN C22.2 60950-1-07 certified
UL62368-1 certified
CSA/CAN C22.2 62368-1 certified
CSA/CAN C22.2 60601-01 certified
ANSI/AAMI ES60601-1 certified
EN55011 certified
CB report
Model Numbering
REM20- __ __ _ W/P
Output Power
nom. Input Voltage
nom. Output Voltage
CTRL pin option (positive logic)
Wide
Input Voltage Range (4:1)
Single
or
Dual
Notes:
Note3: standard is with suffix „/P“ (CTRL pin with positive logic)
without suffix is without CTRL pin (no pin) please refer to dimensions drawing
Ordering Examples:
REM20-2412SW/P = 4:1 Input, 9-36Vin, 12Vout, with control pin positive logic
REM20-4815DW = 4:1 Input, 18-75Vin, ±15Vout, without control pin
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REV.: 0/2018
MED-1
REM20-W
DC/DC Converter
Specifications
(measured @ Ta= 25°C, nominal input voltage. full load and after warm-up)
BASIC CHARACTERISTICS
Parameter
Internal Input Filter
Input Voltage Range
Input Surge Voltage
nom. Vin= 24VDC
nom. Vin= 48VDC
3 second max.
nom. Vin= 24VDC
Under Voltage Lockout
nom. Vin= 48VDC
Quiescent Current
Output Voltage Trimming
Minimum Load
Start-up Time
Rise Time
ON/OFF Control
(4)
Input Current of CTRL Pin
Standby Current
Internal Operating Frequency
Output Ripple and Noise (20MHz BW)
with a 10µF X7R/MLCC
with a 4.7µF X7R/MLCC
5Vout, single and dual
12 & 15Vout, single and dual
24Vout single
DC-DC ON
DC-DC OFF
DC-DC ON
DC-DC OFF
220kHz
-0.5mA
2.5mA
250kHz
50mVp-p
75mVp-p
100mVp-p
300kHz
ON/OFF CTRL
Power up
nom. Vin= 24VDC
nom. Vin= 48VDC
5Vout, 12Vout
15Vout, 24Vout
-10%
-10%
0%
10ms
30ms
5ms
Open or 3.5VDC - 12VDC
Short or 0VDC - 1.2VDC
1mA
60ms
60ms
nom. Vin= 24VDC
nom. Vin= 48VDC
DC-DC ON
DC-DC OFF
DC-DC ON
DC-DC OFF
7.8VDC
17.4VDC
15.8VDC
13mA
10mA
+10%
+20%
9VDC
18VDC
24VDC
48VDC
Series
Max.
Pi type
36VDC
75VDC
50VDC
100VDC
8.6VDC
Condition
Min.
Typ.
Notes:
Note4: The ON/OFF control function is positive logic. The pin voltage is referenced to -Vin pin
Efficiency vs. Load
REM20-2405SW
100
90
80
100
90
80
REM20-2412SW
Efficiency [%]
60
50
40
30
20
10
0
0
10
20
24Vin
18Vin
12Vin
9Vin
30
40
50
60
70
80
90
100
Efficiency [%]
70
70
60
50
40
30
20
10
0
0
10
20
24Vin
18Vin
12Vin
9Vin
30
40
50
60
70
80
90
100
Output Load [%]
continued on next page
www.recom-power.com
REV.: 0/2018
Output Load [%]
MED-2
REM20-W
DC/DC Converter
Specifications
(measured @ Ta= 25°C, nominal input voltage, full load and after warm-up)
Efficiency vs. Load
REM20-4805SW
100
90
80
100
90
80
Series
REM20-4824SW
Efficiency [%]
60
50
40
30
20
10
0
0
10
20
48Vin
36Vin
24Vin
18Vin
30
40
50
60
70
80
90
100
Efficiency [%]
70
70
60
50
40
30
20
10
0
0
10
20
48Vin
36Vin
24Vin
18Vin
30
40
50
60
70
80
90
100
Output Load [%]
Output Load [%]
Power Dissipation vs. Load
REM20-24xxSW
3
2.5
3
2.5
REM20-48xxSW
Power Dissipation [W]
2
1.5
1
0.5
0
24Vin
12Vin
0
10
20
30
40
50
60
70
80
90
100
Power Dissipation [W]
2
1.5
1
0.5
0
48Vin
24Vin
0
10
20
30
40
50
60
70
80
90
100
Output Load [%]
Output Load [%]
Output Voltage Trimming
It allows the user to increase or decrease the output voltage of the module. This is accomplished by connecting an external resistor between the Trim pin and
either the +Vout or -Vout pins. With an external resistor between the Trim and -Vout pin, the output voltage increases. With an external resistor between the
Trim and +Vout pin, the output voltage decreases. The external Trim resistor needs to be at least 1/16W of rated. The values for trim resistors shown in trim
tables below are according to standard E96 values; therefore, the specified voltage may slightly vary.
Trim up
-Vout
R
up
Trim
Trim
+Vout
Trim down
R
down
continued on next page
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REV.: 0/2018
MED-3
REM20-W
DC/DC Converter
Specifications
(measured @ Ta= 25°C, nominal input voltage, full load and after warm-up)
Trim Calculation
Vout
nom
Vout
set
V
ref
R
up
R
down
R
1
& R
2
k
u
Calculation:
= nominal output voltage
= reference voltage
= trim up resistor
= trim down resistor
= internal resistors
= trim up factor
[VDC]
[VDC]
[W]
[W]
[W]
[ ]
= trimmed output voltage [VDC]
Vout
nom
5VDC
12VDC
15VDC
24VDC
R
1
5k1W
10kW
10kW
56kW
R
2
2kW
5k1W
5k1W
13kW
k
u
2.5
9.5
12.5
21.5
2.5VDC
V
ref
Series
R
up
=
R
1
x V
ref
Vout
set
- V
ref
- k
u
- R
2
R
down
=
(Vout
set
- V
ref
) x R
1
Vout
nom
- Vout
set
- R
2
Practical Example REM20-1212SW +10% / -10%:
R
up
=
10k x 2.5
13.2 - 2.5 - 9.5
- 5k1
=
15k7W
R
down
=
(10.8
- 2.5) x 10k
12 - 10.8
- 5k1 =
64k1W
R
up
according to E96
≈
15k8W
REM20-xx05SW(/P)
Trim up
1
5.05
255k
1
4.95
249k
2
5.10
127k
2
4.90
121k
3
5.15
82k5
3
4.85
78k7
4
5.20
61k9
4
4.80
56k2
5
5.25
48k7
5
4.75
44k2
6
5.30
40k2
6
4.70
35k7
R
down
according to E96
≈
64k3W
7
5.35
34k8
7
4.65
29k4
8
5.40
301
8
4.60
24k9
9
5.45
26k1
9
4.55
21k
10
5.50
23k7
10
4.50
18k2
[%]
[VDC]
[W]
[%]
[VDC]
[W]
Vout
set
=
R
up
(E96)
≈
Trim down
R
down
(E96)
≈
Vout
set
=
REM20-xx12SW(/P)
Trim up
1
12.12
205k
1
11.88
768k
2
12.24
10k
2
11.76
383k
3
12.36
64k9
3
11.64
249k
4
12.48
47k5
4
11.52
182k
5
12.60
36k5
5
11.40
143k
6
12.72
29k4
6
11.28
118k
7
12.84
24k9
7
11.16
97k6
8
12.96
20k1
8
11.04
84k5
9
13.08
17k9
9
10.92
73k2
10
13.20
15k8
10
10.8
63k4
[%]
[VDC]
[W]
[%]
[VDC]
[W]
Vout
set
=
R
up
(E96)
≈
Trim down
R
down
(E96)
≈
Vout
set
=
REM20-xx15SW(/P)
Trim up
1
15.15
162k
11
16.65
10k
1
14.85
825K
2
15.30
78k7
12
16.80
8k8
2
14.70
402k
3
15.45
49k9
13
16.95
7k6
3
14.55
261k
4
15.60
36k5
14
17.10
6k8
4
14.40
191k
5
15.75
28k
15
17.25
6k
5
14.25
150k
6
15.90
22k6
16
17.40
5k3
6
14.10
124k
7
16.05
18k7
17
17.55
4k6
7
13.95
105k
8
16.20
15k8
18
17.70
4k1
8
13.80
88k7
9
16.35
13k3
19
17.85
3k6
9
13.65
76k8
10
16.50
11k5
20
18.00
3k2
10
13.50
68k1
[%]
[VDC]
[W]
[%]
[VDC]
[W]
[%]
[VDC]
[W]
Vout
set
=
R
up
(E96)
≈
Trim up
Vout
set
=
R
up
(E96)
≈
Trim down
R
down
(E96)
≈
Vout
set
=
continued on next page
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REV.: 0/2018
MED-4
REM20-W
DC/DC Converter
Specifications
(measured @ Ta= 25°C, nominal input voltage, full load and after warm-up)
REM20-xx24SW(/P)
Trim up
1
24.24
576k
11
26.64
40k2
1
23.76
4M99
2
24.48
280k
12
26.88
35k7
2
23.52
2M43
3
24.72
182k
13
27.12
31k6
3
23.28
1M62
4
24.96
133k
14
27.36
28k7
4
23.04
1M18
5
25.2
105k
15
27.6
26k1
5
22.8
931k
6
25.44
84k5
16
27.84
23k7
6
22.56
768k
7
25.68
69k8
17
28.08
21k5
7
22.32
649k
8
25.92
95k3
18
28.32
19k6
8
22.08
562k
9
26.16
52k3
19
28.56
17k9
9
21.84
487k
10
26.40
45k3
20
28.80
16k2
10
21.60
432k
[%]
[VDC]
[W]
[%]
[VDC]
[W]
[%]
[VDC]
[W]
Series
Vout
set
=
R
up
(E96)
≈
Trim up
Vout
set
=
R
up
(E96)
≈
Trim down
R
down
(E96)
≈
Vout
set
=
REGULATIONS
Parameter
Output Accuracy
Line Regulation
Load Regulation
Cross Regulation
Transient Response
low line to high line
no load to full load
assymetrical load 25% / 100% full load
recovery time
Single Output
Dual Output
Single Output
Dual Output
only Dual Output
25% load step change
Condition
Value
±1.0% max.
±0.2% max.
±0.5% max.
0.2% max.
1.0% max.
±5.0% max.
100µs typ. / 250µs max.
PROTECTIONS
Parameter
Short Circuit Protection (SCP)
(6)
Over Load Protection (OLP)
Output Over Voltage Protection (OVP)
Over Temperature Protection (OTP)
Isolation Voltage
(5)
Isolation Resistance
Isolation Capacitance
Leakage Current
Insulation Grade
Means of Protection
Medical Device Classification
Clearance/Creepage
Notes:
Note5:
Note6:
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Condition
% of Iout rated
Zener diode clamp
5Vout
12Vout
15Vout
24Vout
tested for 1 minute
continuous
Value
continuous, auto-recovery
hiccup mode, 150% - 185%
6.2VDC typ.
15VDC typ.
20VDC typ.
30VDC typ.
+115°C typ.
5kVAC
250VAC
2GW min.
20pF max.
2µA typ. / 2.5µA max.
reinforced
2MOPP
built-in power supply
>8.0mm
at tc point (refer to dimension drawing)
I/P to O/P
working voltage
240VAC. 60Hz
For repeat Hi-Pot testing, reduce the time and/or the test voltage
Refer to local safety regulations if input over-current protection is also required. Recommended fuse: slow blow type
