www.recom-power.com REV.: 1/2018 ECO-1
Features
Unregulated
Converters
• Twin independent outputs
• 1kVDC or 2kVDC input/output basic isolation
• 1kVDC output/output isolation
• Power sharing on outputs
• Standard and miniature versions
• Optional continued short circuit protected
• Efficiency up to 76%
RU/RUM
Description
The RU DC/DC converter offers two independent isolated outputs. Typical applications include multiple
channel circuits where inter-channel isolation is also required. The RUM offers similar specifications
in a miniature case for applications where space is at a premium. Both converters offer
1KVDC input/output isolation and 1kVDC output/output isolation. The /H versions offer 2kVDC isolation
between input and outputs.
DC/DC Converter
1 Watt
SIP7
Isolated
Dual Output
IEC60950-1 certified
EN60950-1 certified
Selection Guide
Part nom. Input Output Output Output Efficiency max. Capacitive
Number Voltage Voltage V1 Voltage V2 Current typ. (1) Load
(2)
[VDC] [VDC] [VDC] [mA] [%] [µF]
RU-3.30505 (3,4)
3.3
5 5 100/100 76 470/470
RU-050505 (3,4)
5
5 5 100/100 72 470/470
RUM-3.30505 (3,4) 3.3 5 5 100/100 78 470/470
RUM-050505 (3,4) 5 5 5 100/100 72 470/470
Model Numbering
Notes:
Note3: standard part is without continuous short circuit protection
add suffix „/P“ for continuous short circuit protection
Note4: add suffix „/H“ for 2kVDC isolation
or add suffix „/HP“ for 2kVDC isolation and continuous short circuit protection
Ordering Examples:
RU-050505/P= 5V Input Voltage, 5V Output Voltage (V1VDC), 5V Output Voltage (V2VDC) with
continuous short circuit protection
RUM-3.30505/HP= 12V Input Voltage, 24V Output Voltage (V1VDC), 24V Output Voltage (V2VDC) with
2kVDC isolation and continuous short circuit protection
nom. Input Voltage
Output Voltage
nom. Input Voltage
Output Voltage
RUM- __ _ _/_
RU- __ _ _/_
Protection (3)
Isolation Option (4)
Protection (3)
Isolation Option (4)
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 resistive load and is defined as the
capacitive load that will allow start up in under 1s without damage to the converter
www.recom-power.com REV.: 1/2018 ECO-2
DC/DC Converter
Specifications (measured @ Ta= 25°C, nom. Vin, full load and after warm-up unless otherwise stated)
RU/RUM
Series
BASIC CHARACTERISTICS
Parameter Condition Min. Typ. Max.
Input Voltage Range ±10%
Minimum Load (5) 0%
Internal Operating Frequency 20kHz 70kHz 105kHz
Output Ripple and Noise 20MHz BW RU
RUM
75mVp-p
100mVp-p
Notes:
Note5: Operation below 10% load will not harm the converter, but specifications may not be met
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 [%]
REGULATIONS
Parameter Condition Value
Output Accuracy ±5.0% max.
Line Regulation low line to high line ±1.2% of 1.0% Vin typ.
Load Regulation 10% to 100% load 3.3, 5Vout
12, 15, 24Vout
15.0% max.
10.0% max.
continued on next page
Deviation vs. Load
25
15
5
-50
20
10
0
-10
Deviation [%]
0 10 20 30 40 50 60 70 80 90 100
Output Load [%]
www.recom-power.com REV.: 1/2018 ECO-3
DC/DC Converter
Specifications (measured @ Ta= 25°C, nom. Vin, full load and after warm-up unless otherwise stated)
RU/RUM
Series
PROTECTIONS
Parameter Type Value
Short Circuit Protection (SCP) without suffix
with suffix “/P”
1 second
continuous
Isolation Voltage (6) I/P to O/P
without suffix tested for 1 second
rated for 1 minute
1kVDC
500VAC / 60Hz
with suffix
“/H”
tested for 1 second
rated for 1 minute
2kVDC
1kVAC / 60Hz
O/P1 to O/P2 tested for 1 second 1kVDC
Isolation Resistance 10G
Ω
min.
Isolation Capacitance 20pF min. / 94pF max.
Insulation Grade basic
ENVIRONMENTAL
Parameter Condition
Value
Operating Temperature Range full load @ free air convection (see graph) -40°C to + 85°C
Operating Altitude 2000m
Operating Humidity non-condensing 95% RH max.
Pollution Degree PD2
MTBF according to MIL-HDBK-217F, G.B. +25°C
+85°C
1012 x 10³ hours
151 x 10³ hours
-40 -20 0 20 40 7060-30 -10 10 30 50 80 90
85
110100
100
80
60
40
90
70
50
30
20
10
0
Output Load [%]
Ambient Temperature [°C]
Derating Graph
(@free air convection)
SAFETY AND CERTIFICATIONS
Certificate Type (Safety) Report / File Number Standard
Information Technology Equipment, General Requirements for Safety
1602031 IEC60950-1:2005, 2nd Edition + A2:2013
EN60950-1:2006 + A2:2013
EAC RU-AT.49.09571 TP TC 004/2011
RoHs 2+ RoHS-2011/65/EU + AM-2015/863
Notes:
Note6: For repeat Hi-Pot testing, reduce the time and/or the test voltage
Note7: Refer to local wiring regulations if input over-current protection is also required. Recommended fuse: T1A slow blow type
www.recom-power.com REV.: 1/2018 ECO-4
DC/DC Converter
Specifications (measured @ Ta= 25°C, nom. Vin, full load and after warm-up unless otherwise stated)
RU/RUM
Series
DIMENSION AND PHYSICAL CHARACTERISTICS
Parameter Type Value
Material
case
potting
PCB
non-conductive black plastic (UL94 V-1)
epoxy, (UL94 V-0)
FR4, (UL94 V-1)
Package Dimension (LxWxH) RU
RUM
19.65 x 7.0 x 10.2mm
16.55 x 6.0 x 7.7mm
Package Weight 2.7g typ.
Pinning information
Pin # Single
1 +Vin
2 -Vin
4 +Vout 1
5 -Vout 1
6 +Vout 2
7 -Vout 2
Tolerance:
xx.x= ±0.5mm
xx.xx= ±0.25mm
Pinning information
Pin # Single
1 +Vin
2 -Vin
3 +Vout 1
4 -Vout 1
5 +Vout 2
6 -Vout 2
Tolerance:
xx.x= ±0.5mm
xx.xx= ±0.25mm
1 2 654 7 1 2 654 7
0.51
1.27 10.2
0.51+0.10/-0.05
6.0
19.6
6x2.54= 15.242.0 2.54
2.54
4.10
0.25
Marking
Bottom View
Top View
embossed logo
Bottom View
123456 123456
Top View
0.51
1.27 7.7
0.51+0.10/-0.05
6.0
16.55
5x2.54 = 12.701.9 2.54
2.54
4.10
0.25
±0.05
Marking
embossed logo
Dimension Drawing (mm)
SIP7 Package
RU
RUM
SIP6 Package
Recommended Footprint Details
Recommended Footprint Details
www.recom-power.com REV.: 1/2018 ECO-5
DC/DC Converter
Specifications (measured @ Ta= 25°C, nom. Vin, full load and after warm-up unless otherwise stated)
RU/RUM
Series
PACKAGING INFORMATION
Parameter Type Value
Packaging Dimension (LxWxH) tube 520.0 x 16.0 x 9.0mm
Packaging Quantity tube RU
RUM
25pcs
30pcs
Storage Temperature Range -55°C to + 125°C
Storage Humidity 95% RH max.
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.
INSTALLATION AND APPLICATION
fuse
Channel 1
Channel 2
Typical Application
