Datasheet

www.recom-power.com
REV.: 0/2019 RPMB-3
DC/DC Converter
Specifications (@ Ta= 25°C, nom. Vin= 24VDC, full load, with input cap
(3)
, after warm-up unless otherwise stated)
RPMB-3.0
Series
Efficiency vs. Load
0 10 20 30 40 50 60 70 80 90 100
100
80
60
40
90
70
50
30
20
10
0
Efficiency [%]
Output Load [%]
15Vin
24Vin
28Vin
36Vin
RPMB12-3.0
0 10 20 30 40 50 60 70 80 90 100
100
80
60
40
90
70
50
30
20
10
0
Efficiency [%]
Output Load [%]
18Vin
24Vin
28Vin
36Vin
RPMB15-3.0
REMOTE SENSE
GND
+V
in
+V
in
GND GND
Trim
+Sense
+V
out
R
up
C
4
RW
1
R
down
GND
+V
out
RW
1
... wire losses +
R
up
... trim up resistor
R
down
... trim down resistor
The output voltage can be adjusted via trim and sense
functions. The maximum output voltage from trim and
sense functions combined is 9V and 24V (based on
models). Power or thermal derating may be required
when using trim and/or sense functions.
OUTPUT VOLTAGE TRIMMING
continued on next page
The RPMB-series offers the feature of trimming the output voltage by using external trim resistors. The values for trim resistors shown in trim tables below
are according to standard E96 values; therefore, the specified voltage may slightly vary. Refer to “Selection Guide“ for applicable Vout Adjust Range.
Vout
nom
R
3
R
4
3.3VDC 100kW 43.2kW
5VDC 100kW 24.9kW
12VDC 100kW 9.09kW
15VDC 90.9kW 6.49kW
Calculation:
Vout
nom
= nominal output voltage [VDC]
Vout
set
= trimmed output voltage [VDC]
R
up
= trim up resistor [W]
R
down
= trim down resistor [W]
R
3
, R
4
= internal resistors [W]
R
up
=
R
4
x (Vout
set
-1) - R
3
x (R
4
+ 1)
R
3
- R
4
x (Vout
set
-1)
R
down
=
R
4
x (Vout
set
-1) x (R
3
+ 1) - R
3
R
3
- R
4
x (Vout
set
-1)
Trim up Trim down
R
up
+V
out
Trim
R
down
GND
Trim
R
up
+V
out
Trim
R
down
GND
Trim
Preliminary