Datasheet

www.recom-power.com
REV.: 4/2019 I-6
DC/DC Converter
Specifications (measured @ Ta= 25°C, 10% minimum load, unless otherwise stated)
R-78Bxx-1.0(L)
Series
Dual Output (two Converters) with Negative Output
Selection Guide - Negative Output
Notes:
Note5: Maximum Capacitive Load including C2 is 220µF
Part Input Output Output Efficiency External Capacitor
Number Voltage Range Voltage Current @ min Vin @ max. Vin C1 C2
(5)
[VDC] [VDC] [A] [%] [%]
R-78B1.5-1.0 4.75 - 28 -1.5 -0.6 70 68 10µF/50V 22µF/6.3V
R-78B1.8-1.0 4.75 - 28 -1.8 -0.6 72 72 10µF/50V 22µF/6.3V
R-78B2.5-1.0 4.75 - 28 -2.5 -0.6 75 77 10µF/50V 22µF/6.3V
R-78B3.3-1.0 4.75 - 28 -3.3 -0.6 77 80 10µF/50V 22µF/6.3V
R-78B5.0-1.0 6.5 - 28 -5.0 -0.6 83 85 10µF/50V 22µF/10V
R-78B6.5-1.0 8.0 - 26 -6.5 -0.4 84 87 10µF/50V 10µF/10V
R-78B9.0-1.0 8.0 - 18 -9.0 -0.4 88 89 10µF/25V 10µF/25V
R-78B12-1.0 8.0 - 18 -12 -0.3 89 90 10µF/25V 10µF/25V
R-78B15-1.0 8.0 - 18 -15 -0.3 89 91 10µF/25V 10µF/25V
continued on next page
High Efficiency Multiple Output
Application Examples
C2
C2
C1
C1
+V
in
GND
+V
in
-V
in
-12V @ 84mA
+12V @ 84mA
0V Com
RD-0512D
RP10-4812SEW
+5V @ 0.4A
+12V @ 0.1A
+5V @ 1A
+3.3V @ 1A
0V @ 1A
• Wide input range 4.75V to 34V
• ±12V outputs for analogue circuits, e.g. instrumentation amplifier
• +5V output for digital circuits
- High isolation voltage - 1.6kV
- Improved load / line regulation
- Wide input voltage range - 18~75VDC
- Point-of-load architecture
- C1 is required. Further decoupling filtering
may be necessary between the converters
C1 optional;
C2 required (further decoupling filtering may
be necessary between the two converters)
C2, C3: optional
C3
R-78Bxx-1.0
GND
+V
out
+V
in
R-78B5.0-1.0
GND
+V
out
+V
in
R-78B3.3-1.0
GND
+V
out
+V
in
+V
in
-V
out
C2
C1
GNDGND
R-78Bxx-1.0
2
31
+V
in
-V
out
C2
C1
+V
out
GNDGND
R-78Bxx-1.0
2
31
R-78Bxx-1.0
2
31