WRE_CKS-1W & WRF_CKS-1W Series
1W, WIDE INPUT, ISOLATED & REGULATED
DUAL/SINGLE OUTPUT SIP DC-DC CONVERTER
multi-country patent protection
RoHS
FEATURES
Efficiency up to 81%
Wide (2:1) Input Range
I/O Isolation 3000VDC
Short circuit protection(automatic
recovery)
External On/Off control
Internal SMD construction
Operating Temperature: -40°C to +85°C
UL94-V0 Package
RoHS Compliance
PRODUCT PROGRAM
Part
Number
WRE0505CKS-1W *
WRE0509CKS-1W *
WRE0512CKS-1W *
WRE0515CKS-1W *
WRF0505CKS-1W *
WRF0509CKS-1W *
WRF0512CKS-1W *
WRF0515CKS-1W *
WRE1205CKS-1W
WRE1209CKS-1W
WRE1212CKS-1W
WRE1215CKS-1W
WRF1205CKS-1W
WRF1209CKS-1W
WRF1212CKS-1W
WRF1215CKS-1W
WRE2405CKS-1W
WRE2409CKS-1W
WRE2412CKS-1W
WRE2415CKS-1W
WRF2405CKS-1W
WRF2409CKS-1W
WRF2412CKS-1W
WRF2415CKS-1W
WRE4805CKS-1W *
WRE4809CKS-1W *
WRE4812CKS-1W *
WRE4815CKS-1W *
WRF4805CKS-1W *
48
36-72
80
24
18-36
40
5
4.5-9.0
11
Input
Voltage (VDC)
Nominal Range
Max**
Voltage
(VDC)
±5
±9
±12
±15
5
9
12
15
±5
±9
±12
±15
5
9
12
15
±5
±9
±12
±15
5
9
12
15
±5
±9
±12
±15
5
9
12
15
Output
Current (mA)
Max
Min
±100
±55
±42
±33
200
111
83
67
±100
±55
±42
±33
200
111
83
67
±100
±55
±42
±33
200
111
83
67
±100
±55
±42
±33
200
111
83
67
±10
±6
±4
±3
20
11
8
7
±10
±6
±4
±3
20
11
8
7
±10
±6
±4
±3
20
11
8
7
±10
±6
±4
±3
20
11
8
7
Efficiency
(%, Typ)
72
74
76
75
72
74
76
75
76
78
80
80
76
78
80
80
78
79
81
81
76
78
81
81
76
78
80
80
76
78
80
80
APPLICATIONS
The WRE_CKS-1W & WRF_CKS-1W Series
are specially designed for applications where a
wide range input voltage power supplies are
isolated from the input power supply in a
distributed power supply system on a circuit
board.
These products apply to:
1) Where the voltage of the input power supply
is wide range (voltage range≤ 2:1);
2) Where isolation is necessary between input
and output(isolation voltage≤3000VDC);
3) Where the regulation of the output voltage
and the output ripple noise are demanded.
12
9.0-18
22
MODEL SELECTION
WRE2412CKS-1W
Rated Power
Package Style
Output Voltage
Input Voltage
Product Series
WRF4809CKS-1W *
WRF4812CKS-1W *
WRF4815CKS-1W *
* Designing.
**Input voltage can’t exceed this value, or will cause the permanent damage.
Note: The load shouldn't be less than 10%, otherwise ripple will increase dramatically.
Operation under 10% load will not damage the converter; However, they may not meet all specification listed.
OUTPUT SPECIFICATIONS
Item
Output power
Positive voltage accuracy
Negative voltage accuracy
Refer To Recommended Circuit
Refer To Recommended Circuit
10% to 100% load(WRF_CKS-1W)
10% to 100% load(WRE_CKS-1W) *
Input voltage from Low To high
Refer to recommended circuit
20MHz Bandwidth
Input voltage range 100% load
Test Conditions
Min
0.1
±1
±3
±0.5
±0.75
±0.2
25
300
Typ
Max
1
±3
±5
±0.75
±1.0
±0.5
±0.03
75
%
Units
W
MORNSUN Science & Technology co.,Ltd.
Address: 2th floor 6th building, Huangzhou
Industrial District, Guangzhou, China
Tel: 86-20-38601850
Fax:86-20-38601272
Http://www.mornsun-power.com
Load Regulation
Line Regulation
Temperature Drift (Vout)
Ripple & Noise**
Switching Frequency
%/°C
mVp-p
KHz
* Dual output models unbalanced load(25/100%):
±5%Max.
**Test ripple and noise by
“parallel
cable” method. See detailed operation instructions at Testing of Power
Converter section, application notes.
MORNSUN reserves the copyright
Specifications subject to change without notice.
WRE_CKS-1W & WRF_CKS-1W
A/0-2008
Page 1 of 2
COMMON SPECIFICATION
Item
Storage Humidity
Operating Temperature
Storage Temperature
Temp. Rise at Full Load
Lead Temperature
Isolation voltage
Isolation resistance
Isolation Capacitance
No-load power consumption
Cooling
Short Circuit Protection
Case Material
MTBF
Weight
1000
5
1.5mm from case for 10 seconds
Tested for 1 minute and 1mA max
Test at 500VDC
100KHz,1V
3000
1000
35
120
Free Air Convection
Continuous, Automatic recovery
Plastic(UL94-V0)
K hours
g
-40
-55
15
300
VDC
MΩ
PF
mW
Test Conditions
Min
Typ
Max
95
85
125
°C
Units
%
APPLICATION NOTE
Recommended circuit
If you want to further decrease the input/output
ripple, an
“LC”
filtering network may be connected
to the input and output ends of the DC/DC
converter, see (Figure 1).
Single Output
Vc
Vi n
Cin
G ND
1
7
D1 Ic R
Lin 2
3
6
8
Cs
Co ut
0V
+Vo
Dual Output
Vc
V in
C in
7
D1 I c R
Lin
2
3
6
Lout
Cout
+Vo
0V
Cout
-Vo
G ND
1
8
Lout
Note:
1. All specifications measured at TA=25°C, humidity<75%, nominal input voltage and rated output load unless
otherwise specified.
4. See below recommended circuits for more details.
(Figure 1)
However, the capacitance of the output filter
capacitor must be proper. If the capacitance is too
big, a startup problem might arise. For every
channel of output, provided the safe and reliable
operation is ensured, the greatest capacitance of
its filter capacitor sees (Table 1). General:
Cin:
Cout:
Lin:
Lout:
Cs:
5V,12V
24V,48V
47μF(Typ.)
4.7μH -120μH
2.2μH-10μH
10μF-22μF
100μF
10μF
TYPICAL TEMPERATURE CURVE
100
Operating Temp.(
C
)
OUTLINE DIMENSIONS & FOOTPRINT DETAILS
External Capacitor Table(Table 1)
Single Vout
Cout
Dual Vout
Cout
(VDC)
(
μ
F)
(VDC)
(
μ
F)
5
680
±5
330
9
560
±9
270
12
470
±12
220
15
330
±15
150
CTRL Terminal
When open or high impedance,the converter
First Angle Projection
1 2 3
5 67 8
Bottom View
work well; When this pin is
‘high’;
the converter
shutdown; It should be note that the input
current
(Ic) should between 5-10mA, exceeding the
maximum 20mA will cause permanence damage
to the converter. The value of R Can be derived as
follows :
R=
V
C
-V
D
-1.0
RECOMMENDED FOOTPRINT
Top
view,grid:2 .54mm(0.1inch),
diam eter:1.00m m(0.039inch)
Dual/Single Output
(0.866)
3
5
Ic
Input current
While using unstable power source, please
ensure the output voltage and ripple voltage do
not
excced indexes
of
the converter. The
12.00
0.50
4.10
Side View
FOOTPRINT DE TAILS
Single
Pin
1
GND
2
Vin
3
CTRL
5
NC
6
+Vo
7
0V
8
CS
NC:No Connection
Dual
GND
Vin
CTRL
NC
+Vo
0V
-Vo
preceding power source must be able to provide
for converter sufficient starting current Ip (Figure
2).General: Ip
≤1.4*Iin-max
Input Current(A)
Ip
Not e:
Uni t:mm(inch)
Pin section:0.50*0.30mm (0.020*0.012inch)
Pin section tol erances:
+
0.10mm(
+
0. 004inch)
General tolerances:
+
0.25mm(
+
0.010inch)
Input Voltage
Range
Input Voltage (V)
No parallel connection or plug and play.
MORNSUN reserves the copyright
Specifications subject to change without notice.
WRE_CKS-1W & WRF_CKS-1W
A/0-2008
Page 2 of 2
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