RAC
AC/DC Converter
www.recom-power.com REV.: 2/2018 PA-1
Description
The RAC20-K series are highly efficient PCB-mount power conversion modules with ultra-low
energy losses especially in light load conditions, making them a benchmark for always-on and standby
mode operations, which are typically coming along with IoT and smart applications. The power supply
units cover worldwide mains input range of 85VAC up to 264VAC and come with international safety
certifications for industrial, AV and ITE as well as household standards. These AC/DC modules operate in
a temperature range of -40°C to +85°C and offer fully protected single or dual outputs as well as EMC
class B compliance without the need of any external components.
E224736
20 Watt
Single
Output
Features
Regulated
Converter
• Wide input range 85-264VAC
• Standby mode optimized PSU (ENER Lot 6)
• Ultra-high efficiency over entire load range
• Operating temperature range: -40°C to +85°C
• Class
II
installations (without FG)
• EMC compliant without external components
• No load power consumption 40mW typ. RAC20-K
Selection Guide
Part Input Output Output Efficiency Max. Capacitive
Number Voltage Range Voltage Current typ (1) Load
(2)
[VAC] [VDC] [mA] [%] [µF]
RAC20-05SK (3) 85-264 5 4000 84 10000
RAC20-12SK (3) 85-264 12 1670 86 8000
RAC20-15SK (3) 85-264 15 1333 86 1500
RAC20-24SK (3) 85-264 24 840 85 1000
RAC20-48SK (3) 85-264 48 420 85 330
RAC20-12DK 85-264 ±12 ±833 84 ±1200
RAC20-15DK 85-264 ±15 ±670 84 ±1000
Notes:
Note1: Efficiency is tested at 230VAC input and constant resistive load at +25°C ambient
Note2: Max Cap Load is tested at nominal input and full resisitive load
Model Numbering
Ordering Examples:
RAC20-05SK 5Watt 5Vout Single Output standard pin version
RAC20-05SK/W 5Watt 5Vout Single Output wired version
RAC20-12DK 5Watt 12Vout Dual Output standard pin version
Single or Dual
nom. Output Power
Output Voltage
RAC20- K/W
Wired option
Notes:
Note3: Add suffix „W“ for wired version (only single output) 12 - 48Vout versions available from Dec/2018
without suffix, standard pin version
ERP
compliant
LOT6
IEC/EN62368-1 certified
UL62368-1 certified
CAN/CSA-C22.2 No. 62368-1-14 certified
IEC/ENC60335 pending
IEC/EN61204-3 compliant
EN55032/14 compliant
EN55024 compliant
CB Report
AC/DC Converter
www.recom-power.com REV.: 2/2018 PA-2
RAC20-K
Series
Specifications (measured @ Ta= 25°C, nom. Vin, full load and after warm-up unless otherwise stated)
BASIC CHARACTERISTICS
Parameter Condition Min. Typ. Max.
Internal Input Filter Pi type
Input Voltage Range (4, 5) nom. Vin= 230VAC 85VAC
120VDC
230VAC 264VAC
370VDC
Input Current 115VAC
230VAC
450mA
400mA
Inrush Current cold start at +25°C 115VAC
230VAC
20A
40A
No Load Power Consumption 230VAC 40mW
ErP Lot 6 Standby Mode Conformity (Output Load
Capability) Input Power =
0.5W
1.0W
2.0W
0.3W
0.7W
1.6W
Input Frequency Range AC Input 47Hz 63Hz
Minimum Load (6) single
dual (required for regulation on both outputs)
0%
5%
Power Factor 115VAC
230VAC
0.6
0.5
Start-up Time 150ms
Rise Time 40ms
Hold-up Time 115VAC
230VAC
15ms
90ms
Internal Operating Frequency 100kHz
Output Ripple and Noise (7) 20MHz BW 100mVp-p
continued on next page
Efficiency vs. Load
Notes:
Note4: The products were submitted for safety files at AC-Input operation
Note5: Refer to line derating graph on page 5
Note6: Operation below 5% load will not harm the converter, but specifications may not be met
Note7: Measurements are made with a 1.0µF MLCC across output (low ESR)
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 [%]
115VAC
230VAC
RAC20-05SK(W)
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 [%]
115VAC
230VAC
RAC20-12SK(W)
AC/DC Converter
www.recom-power.com REV.: 2/2018 PA-3
RAC20-K
Series
Specifications (measured @ Ta= 25°C, nom. Vin, full load and after warm-up unless otherwise stated)
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 [%]
115VAC
230VAC
RAC20-15DK
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 [%]
115VAC
230VAC
RAC20-24SK(W)
REGULATIONS
Parameter Condition Value
Output Accuracy ±2.0% typ.
Line Regulation low line to high line ±0.5% typ.
Load Regulation 10% to 100% load ±2.0% typ.
Cross Regulation (6) dual output only ±5% max.
Transient Response 25% load step change
recovery time
4.0% max.
500µs typ.
continued on next page
2
1
0
-1
1.5
0.5
-0.5
-1.5
-2
Deviation [%]
0 10 20 30 40 50 60 70 80 90 100
Output Load [%]
115VAC
230VAC
Deviation vs. Load
RAC20-05SK(W)
2
1
0
-1
1.5
0.5
-0.5
-1.5
-2
Deviation [%]
0 10 20 30 40 50 60 70 80 90 100
Output Load [%]
115VAC
230VAC
RAC20-12SK(W)
AC/DC Converter
www.recom-power.com REV.: 2/2018 PA-4
RAC20-K
Series
Specifications (measured @ Ta= 25°C, nom. Vin, full load and after warm-up unless otherwise stated)
2
1
0
-1
1.5
0.5
-0.5
-1.5
-2
Deviation [%]
0 10 20 30 40 50 60 70 80 90 100
Output Load [%]
115VAC
230VAC
PROTECTIONS
Parameter Type Value
Input Fuse (8) internal T3.15A, slow blow type
Short Circuit Protection (SCP) below 100mWhiccup, auto recovery
Over Voltage Protection (OVP) 150% - 195%, latch off mode
Over Current Protection (OCP) 110% - 130%, hiccup mode
Over Voltage Category OVCII
Class of Equipment Class II
Isolation Voltage (9)
I/P to O/P tested for 1 minute 3kVAC
Isolation Resistance V
iso
= 500VDC 1GW min.
Isolation Capacitance 100pF max.
Insulation Grade reinforced
Leakage Current 0.25mA max.
RAC20-15DK
Notes:
Note8: Refer to local safety regulations if input over-current protection is also required
Note9: For repeat Hi-Pot testing, reduce the time and/or the test voltage
2
1
0
-1
1.5
0.5
-0.5
-1.5
-2
Deviation [%]
0 10 20 30 40 50 60 70 80 90 100
Output Load [%]
115VAC
230VAC
RAC20-24SK(W)
ENVIRONMENTAL
Parameter Condition
Value
Operating Temperature Range @ natural convection 0.1m/s full load -40°C to +55°C
refer to derating graph -40°C to +85°C
Maximum Case Temperature +95°C
Temperature Coefficient 0.05%/K
Operating Altitude 3000m
Operating Humidity non-condensing 20% - 90% RH max.
IP Rating IP20
Pollution Degree PD2
Vibration according to MIL-STD-202G 10-500Hz, 2G 10min./1cycle, period 60min. along x,y,z axes
Design Lifetime +25°C 130 x 10³ hours
+55°C 16 x 10³ hours
MTBF according to MIL-HDBK-217F, G.B. +25°C
+55°C
>450 x 103 hours
>56 x 103 hours
continued on next page
AC/DC Converter
www.recom-power.com REV.: 2/2018 PA-5
RAC20-K
Series
Specifications (measured @ Ta= 25°C, nom. Vin, full load and after warm-up unless otherwise stated)
SAFETY AND CERTIFICATIONS
Certificate Type (Safety) Report / File Number Standard
Audio/Video, information and communication technology equipment -
Safety requirements E224736 UL62368-1, 2nd Edition, 2014
CAN/CSA C22.2 Nr. 62368-1-14, 2nd Ed. 201
4
Audio/Video, information and communication technology equipment -
Safety requirements
(CB Scheme)
E491408-A6002-CB-1
IEC62368-1:2014 2nd Edition
EN62368-1:2014 + A11:2017
Household and similar electrical appliances – Safety – Part 1:
General requirements pending
IEC60335-1:2010 + AMD2:2016 + COR1:2016
EN60335-1:2012 + A11:2014 + A13:2017
RoHS 2 RoHS-2011/65/EU
EMC Compliance Condition Standard / Criterion
Low voltage power supplies, d.c. output Part 3: Electromagnetic compatibility (EMC)
IEC/EN61204-3:2000, Class B
Electromagnetic compatibility of multimedia equipment - Emission requirements
without external filter
Electromagnetic compatibility of household appliances, electric tools and similar
apparatus - Emission Requirements EN55014-1:2006+A2:2011
Information technology equipment - Immunity characters - Limits and methods of
measurement
EN55024:2010 + A1:2015
Electromagnetic compatibility of household appliances, electric tools and similar
apparatus - Immunity Requirements EN55014-2:2015
ESD Electrostatic discharge immunity test
Air: ±2, 4, 8kV, Contact: ±2, 4kV
Radiated, radio-frequency, electromagnetic field immunity test 10V/m, 3V/m, 1V/m
EN61000-4-3:2006 + A1:2008, Criteria A
Fast Transient and Burst Immunity AC Power Port: ±2.0kV
DC Output Port: ±2.0kV EN61000-4-4:2012, Criteria B
Surge Immunity AC Power Port: L-N ±1.0kV
DC Output Port: ±0.5kV EN61000-4-5:2014+A1:2017, Criteria B
Immunity to conducted disturbances, induced by radio-frequency fields AC Power Port: 10V
DC Output Port: 10V EN61000-4-6:2014, Criteria A
Power Magnetic Field Immunity 50Hz, 30A/m EN61000-4-8:2010, Criteria A
Voltage Dips and Interruptions
Voltage Dips 20%
Voltage Dips 30%
Voltage Dips 60%
Voltage Dips 100%
Voltage Interruptions > 95%
EN61000-4-11:2004+A1:2017, Criteria C
EN61000-4-11:2004+A1:2017, Criteria C
EN61000-4-11:2004+A1:2017, Criteria C
EN61000-4-11:2004+A1:2017, Criteria B
EN61000-4-11:2004+A1:2017, Criteria C
continued on next page
-20-40 0 20 40 60 80 100
100
80
60
40
90
70
50
30
20
10
0
Output Load [%]
Ambient Temperature [°C]
55 85
Derating Graph
(@ Chamber and natural convection 0.1m/s)
100
80
60
40
90
70
50
30
20
10
0
Output Load [%]
Input Voltage [VAC]
85 90 264
Line Derating
AC/DC Converter
RAC20-K
Series
www.recom-power.com REV.: 2/2018 PA-6
Specifications (measured @ Ta= 25°C, nom. Vin, full load and after warm-up unless otherwise stated)
DIMENSION AND PHYSICAL CHARACTERISTICS
Parameter Type Value
Material
case
potting
PCB
baseplate
black plastic, (UL94V-0)
silicone, (UL94V-0)
FR4, (UL94V-0)
black plastic, (UL94V-0)
Dimension (LxWxH) 52.5 x 27.4 x 23.0mm
Weight pin
wired
60g typ.
65
g typ.
continued on next page
26.3
Bottom View
51.0
20.32
52.5
27.423.0
7.08 ±1.0
Ø1.0 ±0.1
10.1610.16
3.39 2.54
2.54
18x2.54= 45.72
embossed logo
Top View
3.50
2
2
1
1
5
5
3
3
4 4
Dimension Drawing (mm)
Recommended Footprint Details
SAFETY AND CERTIFICATIONS
EMC Compliance Condition Standard / Criterion
Limits of Voltage Fluctuations & Flicker EN61000-3-3:2013
Limitations on the amount of electromagnetic intererence allowed from digital and electronic devices FCC 47 CFR Part 15 Subpart B, Class B
American National Standard for Methods of Measurement of Radio-Noise Emissions from Low-
Voltage Electrical and Electronic Equipment in the Range of 9 kHz to 40 GHz ANSI C63.4-2014, Class B
Pinning information
Pin # Single Dual
1 VAC in (N) VAC in (N)
2 VAC in (L) VAC in (L)
3 no pin -Vout
4 -Vout Com
5 +Vout +Vout
Tolerance: xx.x= ±0.5mm
xx.xx= ±0.25mm
AC/DC Converter
www.recom-power.com REV.: 2/2018 PA-7
RAC20-K
Series
Specifications (measured @ Ta= 25°C, nom. Vin, full load and after warm-up unless otherwise stated)
PACKAGING INFORMATION
Parameter Type Value
Packaging Dimension (LxWxH) pin
wired
tube
tray
490.0 x 56.0 x 40.0mm
488.0 x 202.0 x 47.0mm
Packaging Quantity tube
tray
15pcs
20pcs
Storage Temperature Range -40°C to +85°C
Storage Humidity non-condensing 20% to 90% 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.
Wired information
# Function Wire color Type AWG
1 VAC in (N) blue UL-1015 18
2 VAC in (L) brown UL-1015 18
4 -Vout black UL-1015 18
5 +Vout red UL-1015 18
Tolerance: xx.x= ±0.5mm
xx.xx= ±0.25mm
Dimension Drawing Single Wired (mm) 12-48Vout available from Dec/2018
Bottom View
52.5
51.0 26.3
27.423.0
embossed logo
100.0±10
2
1 5
4
Ø2.9
5 ±2