20W 1"x1" Package DC-DC Regulated Converter
■ Features
DIP 1"x1" package with industry standard pinout
4:1 ultrawide input range
Operating temperature range -40 ~ +85℃
No minimum load required
Comply to EN55032 radiated Class A without additional
components
High efficiency up to 89%
Protections: Short circuit (Continuous) / Overload /
Over voltage / Input under voltage
1.5KVDC I/O isolation
Remote ON/OFF control and Triming output (±10%)
3 years warranty
SKMW20 & DKMW20 series
■ Applications
Telecom/ datacom system
Wireless network
Industrial control facility
Instrument
Analyzer
Detector
Data switch
■ Description
SKMW20 and DKMW20 series are 20W isolated and regulated module type DC-DC converter with DIP 1"x1"
package. It features international standard pins, a high efficiency up to 89%, wide working temperature
range -40~+85℃, 1.5KVDC I/P-O/P isolation voltage, compliance to EN55032 radiated Class A without
additional components , continuous-mode short circuit, overload , over temperature , input under
voltage protection, remote ON/OFF and trimmable output voltage etc. The models account for different
input voltage 9~36V and 18~75V 4:1 ultrawide input range, and various output voltage, 3 . 3V /5V/12V/
15V for single output and ±12V/±15V for dual outputs, which are suitable for all kinds of systems, s uch
as industrial control, telecommunication field, distributed power architecture, and so on.
■ Model Encoding
S KMW20 F - 12
Output voltage (3.3/5/12/15Vdc， ±12/±15Vdc)
Input voltage (F: 9~36Vdc，G: 18~75Vdc)
Rated wattage
Series name
output
{ S:Single
D:Dual output
File Name:SKMW20,DKMW20-SPEC 2017-03-06
20W 1"x1" Package DC-DC Regulated Converter
SKMW20 & DKMW20 series
MODEL SELECTION TABLE
INPUT
ORDER NO.
INPUT VOLTAGE
(RANGE)
OUTPUT
INPUT CURRENT
OUTPUT
VOLTAGE
OUTPUT
CURRENT
EFFICIENCY
(TYP.)
CAPACITOR LOAD
(MAX.)
NO LOAD
FULL LOAD
SKMW20F-03
10mA
781mA
3.3V
0~4500mA
87%
5000μF
SKMW20F-05
10mA
926mA
5V
0~4000mA
89%
4000μF
SKMW20F-12
10mA
936mA
12V
0~1670mA
88%
1650μF
10mA
936mA
15V
0~1330mA
88%
1300μF
DKMW20F-12
10mA
936mA
±12V
±0 ~ 830mA
87%
*800μF
DKMW20F-15
10mA
936mA
±15V
±0 ~660mA
87%
*650μF
SKMW20G-03
8mA
390mA
3.3V
0~4500mA
87%
5000μF
SKMW20G-05
8mA
463mA
5V
0~4000mA
87%
4000μF
SKMW20G-12
8mA
463mA
12V
0~1670mA
89%
1650μF
8mA
468mA
15V
0~1330mA
88%
1300μF
DKMW20G-12
8mA
473mA
±12V
±0 ~ 830mA
87%
*800μF
DKMW20G-15
8mA
468mA
±15V
±0 ~660mA
88%
*650μF
SKMW20F-15
SKMW20G-15
24V
(9 ~ 36V)
48V
(18 ~ 75V)
* For each output
File Name:SKMW20,DKMW20-SPEC 2017-03-06
20W 1"x1" Package DC-DC Regulated Converter
SKMW20 & DKMW20 series
SPECIFICATION
VOLTAGE RANGE
F: 9~36Vdc , G: 18~75Vdc
SURGE VOLTAGE (100ms max.) 24Vin models : 50Vdc, 48Vin models : 100Vdc
INPUT
FILTER
Pi type
PROTECTION
Fuse recommended. 24Vin models: 3A delay time Type, 48Vin models: 1.5A delay time Type
INTERNAL POWER DISSIPATION 500mW
VOLTAGE ACCURACY
±1.5%
RATED POWER
20W
RIPPLE & NOISE
OUTPUT
Note.2 3.3/5Vout models: 75mVp-p, other models:100mVp-p
LINE REGULATION Note.3 ±0.2%
LOAD REGULATION Note.4 Single output models: ±0.2%, Dual output models:±1%
SWITCHING FREQUENCY (Typ.) 3.3/5Vout models: 270KHz, other models: 330KHz
EXTERNAL TRIM ADJ. RANGE (Typ.) ±10% (Single output model only)
SHORT CIRCUIT
OVERLOAD
PROTECTION
OVER VOLTAGE
UNDER VOLTAGE LOCKOUT
FUNCTION
ENVIRONMENT
Protection type : Continuous, automatic recovery
110 ~ 170% rated output power
Protection type : Recovers automatically after fault condition is removed
Protection type : Clamp by diode
Start-up voltage
24Vin (F-type): 8.8Vdc, 48Vin (G-type): 17Vdc
Shutdown voltage
24Vin (F-type): 8Vdc,
48Vin (G-type): 16Vdc
REMOTE CONTROL
Power ON: R.C. ~ -Vin >3.5~75Vdc or open circuit ; Power OFF: R.C. ~ -Vin <1.2Vdc or short
COOLING
Free-air convection
WORKING TEMP.
-40 ~ +85℃ (Refer to "Derating Curve")
CASE TEMPERATURE
+105℃ max.
WORKING HUMIDITY
20% ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY -55 ~ +1 25℃, 10 ~ 95% RH non-condensing
TEMP. COEFFICIENT
0.03% / ℃ (0 ~ 60℃)
SOLDERING TEMPERATURE 1.5mm from case of 1 ~ 3sec./260℃ max.
VIBRATION
10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes
WITHSTAND VOLTAGE
I/P-O/P:1.5KVDC
ISOLATION RESISTANCE I/P-O/P:100M Ohms / 500VDC / 25℃/ 70% RH
ISOLATION CAPACITANCE (Typ.) 1500pF
Parameter
Standard
Test Level / Note
Conducted
EN55032(CISPR32)
N/A
SAFETY &
Radiated
EN55032(CISPR32)
Class A
EMC
( Note.5)
Parameter
Standard
Test Level / Note
ESD
EN61000-4-2
Level 2, ±8KV air, ±4KV contact
Radiated Susceptibility
EN61000-4-3
Level 2, 3V/m
EFT/Burest
EN61000-4-4
Level 1, 0.5KV
Surge
EN61000-4-5
Level 1, 0.5KV Line-Line
Conducted
EN61000-4-6
Level 2, 3V(e.m.f.)
Magnetic Field
EN61000-4-8
Level 2, 3A/m
EMC EMISSION
EMC IMMUNITY
OTHERS
NOTE
MTBF
3.3/5Vout models: 910Khrs, Other models: 1220Khrs MIL-HDBK-217F(25℃)
DIMENSION (L*W*H)
25.4*25.4*10.2mm (1*1*0.4 inch)
CASE MATERIAL
Black coated copper with non-conductive base
PACKING
18g
1.All parameters are specified at normal input(F:24Vdc, G:48Vdc), rated load, 25℃ 70% RH ambient.
2.Ripple & noise are measured at 20MHz by using a 12" twisted pair terminated with a 0.1μf & 47μf capacitor.
3.Line regulation is measured from low line to high line at rated load.
4.Load regulation is measured from 0% to 100% rated load.
5.The final equipment must be re-confirm that it still meet EMC directives. For guidance on how to perform these EMC tests, please
refer to EMI testing of component power supplies.(as available on http://www.meanwell.com)
File Name:SKMW20,DKMW20-SPEC 2017-03-06
20W 1"x1" Package DC-DC Regulated Converter
SKMW20 & DKMW20 series
External Output Trimming
In order to trim the voltage up or down one needs to connect the trim resistor either between the trim pin and -Vo for trim-up and between trim pin and
+Vo for trim-down. The output voltage trim range is ±10%. This is shown in Figures 1 and 2:
+Vo
+Vin
+Vo
+Vin
Trim
R trim-down
R-Load
R-Load
R trim-up
-Vin
Trim
-Vin
-Vo
-Vo
Figure 2. Trim-down Voltage Setup
Figure 1. Trim-up Voltage Setup
Mechanical Specification
2.5(0.1)
All dimensions in mm(inch)
Tolerance:x.x±1mm( x.xx±0.25")
Pin size is 1±0.1mm ( 0 . 04 "±0.004")
20.32(0.8)
6
10.2(0.4)
1
2
Bottom View
5
4
10.16(0.4)
Side View
1(0.04)
25.4(1)
5.08(0.2)
7.62(0.3)
3
10.16(0.4)
10.2(0.4)
5.6(0.22 ) min.
25.4(1)
Derating Curve
Plug Assignment
Pin-Out
SKMW20
(Single output)
DKMW20
(Dual output)
1
+Vin
+Vin
2
-Vin
-Vin
3
+Vout
+Vout
4
Trim
Common
5
-Vout
-Vout
6
R.C.
R.C.
100
LOAD (%)
Pin No.
80
60
50
40
Natural convection
20
-40
-20
0
20
40
65
80 85 90
105
Ta (℃)
Installation Manual
Please refer to : http://www.meanwell.com/manual.html
File Name:SKMW20,DKMW20-SPEC 2017-03-06