Features
Regulated
Converters
Description
• 2:1 Wide Input Range Regulated Converter
• 2W In Compact SMD Package
• -40°C To +85°C Operating Temperature @ Full Load
• high 3kVDC/1 Second (1kVAC/1 Minute)
• Continuous Short Circuit Protection
• IEC/EN62368-1 Certified (CB Scheme)
DC/DC Converter
RTC2
2 Watt
3
SMD
Single Output
3Y
wa
EAR
The RTC2 is a 2W, open-frame, SMD, isolated DC/DC converter with 2:1 input voltage range. It is
available with 5V (4.5-9V) or 24V (18-36V) inputs and offers a single 5V output which is short circuit
protected. The output is tightly regulated with less than 50mV output ripple. There is no minimum load
requirement. The operating temperature is -40°C up to 100°C (with derating). Isolation is 3kVDC/1kVAC
(functional Isolation) and a control pin is fitted as standard. The converter is IEC/EN62368-1 certified
and is 10/10 RoHS-conform. Class B EMC conformity can be reached with a simple external LC filter.
rranty
Selection Guide
Part
Number
RTC2-0505SRW
RTC2-2405SRW
nom. Input
Voltage
[VDC]
4.5 - 9
18 - 36
Output
Voltage
[VDC]
5
5
Output
Current
[mA]
400
400
Efficiency
typ.
(1)
[%]
76
80
max. Capacitive
Load
(2)
[µF]
4700
4700
Notes:
Note1: Efficiency is tested at nominal input and full load at +25°C ambient.
Note2: Max. cap. load is tested at minimum input and full resistive load.
Model Numbering
RTC2-__ __ SRW-_
nom. Input Voltage
Output Voltage
Notes:
Note3: without suffix, standard tray packaging
add suffix „-R“ for Tape and Reel packaging
Ordering Examples:
RTC2-0505SRW
RTC2-2405SRW-R
= nom.Vin=5VDC, nom. Vout= 5VDC, standard 3kVDC/1 second isolation, tray packaging
= nom.Vin= 24DC, nom. Vout= 5VDC, standard 3kVDC/1 second isolation, tape and reel packaging
Packaging
(3)
Single
IEC/EN62368-1 Certified
CB Report
EN55022
Specifications
(measured @ Ta= 25°C, nominal Vin, full load and after warm up unless otherwise specified)
BASIC CHARACTERISTICS
Parameter
Internal Input Filter
Input Voltage Range
Input Surge Voltage
Quiescent Current
nom. Vin=
100ms max. nom. Vin=
nom. Vin=
5VDC
24VDC
5VDC
24VDC
5VDC
24VDC
4.5VDC
18VDC
5VDC
24VDC
15VDC
50VDC
40mA
3mA
Condition
Min.
Typ.
Max.
capacitor
9VDC
36VDC
continued on next page
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REV.: 4/2018
ECO-1
RTC2
DC/DC Converter
Specifications
(measured @ Ta= 25°C, nominal Vin, full load and after warm up unless otherwise specified)
Parameter
Start-up time
Rise Time
Hold-up Time
Internal Operating Frequency
Minimum Load
Output Ripple and Noise
(4)
ON/OFF CTRL
Input Current of CTRL Pin
Standby Current
Notes:
Note4: Measurements are made with a 0.1µF MLCC across output. (low ESR)
20MHz BW
DC-DC ON
DC-DC OFF
nom Vin=
5VDC
24VDC
40mA
16mA
0.75mA
1.5mA
nom Vin=
5VDC
24VDC
0%
50mVp-p
Open or 0.0V<Vr<0.8VDC
2V<Vr<6VDC
Series
Condition
Min.
Typ.
500µs
450µs
10µs
180kHz
210kHz
Max.
Efficiency vs. Load
90
80
70
90
80
70
RTC2-0505SRW
90
80
70
90
80
70
RTC2-2405SRW
Efficiency [%]
Efficiency [%]
Efficiency [%]
60
50
40
30
20
10
0
0
60
50
40
30
20
10
0
0.1
0
0.2
0.1
0.2
0.3
4.5Vin
5Vin
9Vin
0.4
0.3
60
50
40
30
20
10
0
0.4 0
Efficiency [%]
60
50
40
30
20
10
0
0.1
0
0.2
0.1
0.2
0.3
18Vin
24Vin
36Vin
0.4
0.3
18Vin
24Vin
36Vin
0.4
4.5Vin
5Vin
9Vin
Output Load [A] Load [A]
Output
REGULATIONS
Parameter
Output Accuracy
Line Regulation
Load Regulation
low line to high line, full load
0% to 100% load
Output Load [A] Load [A]
Output
Condition
Value
±2.0% typ.
±0.2% max.
±0.5% max.
Accuracy vs. Load
0.7
0.6
0.7
0.6
RTC2-0505SRW
0
-0.05
0
-0.05
RTC2-2405SRW
Accuracy [%]
Accuracy [%]
Accuracy [%]
0.4
0.3
0.2
0.1
0
0
0.4
0.3
0.2
0.1
0
0.1
0
0.1
0.2
0.2
0.3
4.5Vin
5Vin
9Vin
0.3
0.4
-0.15
-0.2
-0.25
-0.3
Accuracy [%]
0.5
0.5
-0.1
-0.1
-0.15
-0.2
-0.25
-0.3
-0.35
0.1
0
0.1
0.2
0.2
0.3
18Vin
24Vin
36Vin
0.3
0.4
18Vin
24Vin
36Vin
0.4
4.5Vin
5Vin
9Vin
-0.35
0.4
0
Output Load [A] Load [A]
Output
ECO-2
REV.: 4/2018
Output Load [A] Load [A]
Output
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RTC2
DC/DC Converter
Specifications
(measured @ Ta= 25°C, nominal Vin, full load and after warm up unless otherwise specified)
PROTECTIONS
Parameter
Short Circuit Protection (SCP)
Isolation Voltage
(5)
Isolation Resistance
Isolation Capacitance
Insulation Grade
I/P to O/P
Series
Type
below 100mW
tested for 1 second
rated for 1 minute
Value
continuous, auto recovery
3kVDC
1kVAC
(7)
1GW min.
25pF typ.
functional
Protection Circuit
+Vin
Fuse
(6)
C1
(7)
+Vout
-Vin
-Vout
Notes:
Note5: For repeat Hi-Pot testing, reduce the time and/or the test voltage
Note6 An input fuse is required if the main supply is not over-current protected. Recommended fuse: T2A slow blow type
Note7: An external input filter capacitor is required if the model has to meet EN6100-4-4 and EN61000-4-5
Recom suggested: Nippon chemi-con KY Series, 220µF/100V ESR 48mW
ENVIRONMENTAL
Parameter
Operating Temperature Range
Temperature Coefficient
Operating Altitude
Operating Humidity
Pollution Degree
Vibration
MTBF
according to MIL-HDBK-217F, G.B. +25°C
non-condensing
Condition
with derating (see graph)
Value
-40°C to +100°C
±0.05%/°C
5000m
5% - 95% RH max.
PD2
according to MIL-STD-202G
2145 x 10³ hours
Derating Graph
(@ Chamber and natural convection 0.1m/s)
100
80
60
40
20
0
-40
Output Power [%]
5Vin
24Vin
-20
0
20
40
60
80
75 85
100 110
Ambient Temperature [°C]
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REV.: 4/2018
ECO-3
RTC2
DC/DC Converter
Specifications
(measured @ Ta= 25°C, nominal Vin, full load and after warm up unless otherwise specified)
SAFETY AND CERTIFICATIONS
Certificate Type (Safety)
Audio/Video, information and communication technology equipment - Safety requirements (CB Scheme)
RoHS2
Series
Report / File Number
L0339m43-CB-1-B1
Standard
IEC62368-1, 2nd Edition, 2014
EN62368-1, 2014
RoHS-2011/65/EU + AM2 (10/10)
EMC Compliance
Information technology equipment - Radio disturbance characteristics - Limits and methods of
measurement
Electromagnetic compatibility of multimedia equipment - Emission requirements
Information technology equipment - Immunity characteristics - Limits and methods of measurement
ESD Electrostatic discharge immunity test
Radiated, radio-frequency, electromagnetic field immunity test
Fast Transient and Burst Immunity
Surge Immunity
Immunity to conducted disturbances, induced by radio-frequency fields
Power Magnetic Field Immunity
Condition
with external filter
(see filter suggestion below)
Standard / Criterion
EN55022, Class A
EN55022, Class B
EN55032, Class B
EN55024
Air: ±8kV; Contact: ±4kV
3V/m
DC Port: ±0.5kV
DC Port: ±1kV
DC Port: 3V
50Hz 1A/m
EN61000-4-2, Criteria A
EN61000-4-3, Criteria A
EN61000-4-4, Criteria A
EN61000-4-5, Criteria B
EN61000-4-6, Criteria A
EN61000-4-8, Criteria A
EMC Filtering Suggestions according to EN55022 Class A
L1
+Vin
C1
+Vout
nom. Vin
5VDC
24VDC
C1
22µF/16V MLCC
22µF/50V MLCC
L1
12µH SMD Inductor
22µH SMD Inductor
-Vin
-Vout
EN55022 Class A Conducted Emmisions
RTC2-0505SRW
RTC2-2405SRW
vcontinued on next page
ECO-4
REV.: 4/2018
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RTC2
DC/DC Converter
Specifications
(measured @ Ta= 25°C, nominal Vin, full load and after warm up unless otherwise specified)
EMC Filtering Suggestions according to EN55022 Class B
L1
Series
+Vin
C1
+Vout
nom. Vin
5VDC
C1
22µF/16V MLCC
C2
L1
12µH SMD
Inductor
-Vin
C2
-Vout
24VDC
220pF/4kV
22µF/50V MLCC Disc ceramic
EN55022 Class B Conducted Emmisions
RTC2-0505SRW
RTC2-2405SRW
DIMENSION and PHYSICAL CHARACTERISTICS
Parameter
Material
Package Dimension (LxWxH)
Package Weight
Type
case (spacers)
PCB
Value
plastic (UL94 V-0)
FR4 (UL94 V-0)
14.99 x 14.22 x 9.6mm
2.0g typ.
continued on next page
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REV.: 4/2018
ECO-5
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