WRE_CKS-1W & WRF_CKS-1W Series
1W, WIDE INPUT, ISOLATED & REGULATED
DUAL/SINGLE OUTPUT SIP DC-DC CONVERTER
FEATURES
●
Efficiency up to 80%
●
2:1 wide input range
●
3000VDC isolation
●
Short circuit protection
(automatic recovery)
●
External On/Off control
●
High power density
●
Operating temperature range:
-40°C to +85°C
●
UL94-V0 Package
APPLICATIONS
The WRE_CKS-1W & WRF_CKS-1W series are
designed for application where a wide input voltage range,
isolated output is required from a distributed power
system. For these DC-DC converters, You can reduce the
design point of failure and save the development of micro
power supply‘s manpower, material and time costs, also
better ensure product quality stability, protect safety and
reliability of the end of products.
These products apply to where:
1) Input voltage range≤ 2:1;
2) 3KVDC input and output isolation;
3) Regulated and low ripple noise is required.
Patent Protection
RoHS
PART NUMBER SYSTEM
WRE2412CKS-1W
Rated P ower
Package S tyl e
Output Voltage
Input Voltage
Product S eries
SELECTION GUIDE
Input Voltage(VDC)
Model Number
WRE0505CKS-1W
WRE0512CKS-1W
WRE0515CKS-1W
WRF0505CKS-1W
★
WRF0509CKS-1W
WRF0512CKS-1W
WRF0515CKS-1W
WRE1205CKS-1W
WRE1212CKS-1W
WRE1215CKS-1W
WRF1203CKS-1W
WRF1205CKS-1W
WRF1209CKS-1W
WRF1212CKS-1W
WRF1215CKS-1W
WRE2405CKS-1W
WRE2412CKS-1W
WRE2415CKS-1W
WRF2403CKS-1W
WRF2405CKS-1W
★
WRF2409CKS-1W
WRF2412CKS-1W
24
(18-36)
40
24(18-36)
40
24
(18-36)
40
12
(9.0-18)
22
5
9
12
15
±5
±12
±15
3.3
5
9
12
200
111
83
67
±100
±42
±33
303
200
111
83
20
11
8
7
±10
±4
±3
30
20
11
8
109
107
105
104
54
54
55
58
55
54
52
WRE_CKS-1W &WRF_CKS-1W
Nominal
(Range)
5
(4.5-9.0)
5(4.5-9.0)
5
(4.5-9.0)
5(4.5-9.0)
5(4.5-9.0)
Max*
Output
Voltage
(VDC)
±5
Output Current (mA) Input Current (mA)(typ.)
Max.
±100
±42
±33
200
111
83
67
±100
±42
±33
303
Min.
±10
±4
±3
20
11
8
7
±10
±4
±3
30
@Max.
Load
278
50
270
274
286
50
50
@No Load
Reflected
Ripple
Current
(mA,typ.)
35
Max.
Capacitive
#
Load (µF)
680
330
Efficiency
(%, typ.)
@Max. Load
72
74
73
70
71
76
75
76
74
75
74
76
78
79
80
78
78
76
72
76
78
80
Page 1 of 6
11
11
11
±12
±15
5
9
35
35
220
1000
680
282
263
267
109
113
111
113
20
30
50
50
35
35
11
11
12
15
±5
±12
±15
3.3
470
330
680
330
220
2200
1000
680
470
330
680
10
55
330
220
10
55
2200
1000
10
55
680
470
A/4-2012
The copyright and authority for the interpretation of the products are reserved by MORNSUN
Input Voltage(VDC)
Model Number
Nominal
(Range)
24
(18-36)
24(18-36)
48(36-72)
48(36-72)
48(36-72)
48(36-72)
48
(36-72)
48(36-72)
48(36-72)
Max*
40
40
80
80
80
80
80
Output
Voltage
(VDC)
15
24
±5
±12
±15
3.3
5
9
Output Current (mA) Input Current (mA)(typ.)
Max.
67
42
±100
±42
±33
303
200
111
83
67
Min.
7
4
±10
±4
±3
30
20
11
8
7
@Max.
Load
52
54
28
27
28
29
28
5
27
26
26
5
5
@No Load
10
10
5
5
5
5
Reflected
Ripple
Current
(mA,typ.)
55
55
382
382
382
382
382
Max.
Capacitive
#
Load (µF)
330
220
680
330
220
2200
1000
680
Efficiency
(%, typ.)
@Max. Load
80
77
76
77
75
72
76
78
80
80
WRF2415CKS-1W
WRF2424CKS-1W
WRE4805CKS-1W
WRE4812CKS-1W
WRE4815CKS-1W
WRF4803CKS-1W
WRF4805CKS-1W
★
WRF4809CKS-1W
WRF4812CKS-1W
WRF4815CKS-1W
80
80
12
15
382
382
470
330
Note: 1. *Input voltage can’t exceed this value, or will cause the permanent damage.
2.★Still not design.
#
3. For each output.
4. Models listed with strike-through text have been officially discontinued.
INPUT SPECIFICATIONS
Item
Test Conditions
5VDC Input Models
Input Surge Voltage (1sec. max.)
12VDC Input Models
24VDC Input Models
48VDC Input Models
Short Circuit Input Power
Input Filter
Min.
-0.7
-0.7
-0.7
-0.7
--
Typ.
--
--
--
--
1
Max.
12
25
50
100
--
W
VDC
Unit
Capacitance Filter
OUTPUT SPECIFICATIONS
Item
Output Power
Positive voltage accuracy
Negative voltage accuracy
Output Voltage Balance
Line Regulation
Load Regulation
Transient Recovery Time
Transient Response Deviation
Temperature Drift
Ripple & Noise*
Short Circuit Protection
Refer to recommended circuit
Dual Output, Balanced Loads
Full load, Input voltage from low to high
10% to 100% load
25% load step change
100% full load
20MHz Bandwidth
WRE_CKS-1W
WRF_CKS-1W
Test Conditions
Min.
0.1
--
--
--
--
--
--
--
--
--
--
Typ.
--
±1
±3
±0.3
±0.2
±0.75
±0.5
8
±3
--
25
Max.
1
±3
±5
±0.5
±0.5
±1.0
±0.75
10
±5
±0.03
75
ms
%
%/°C
mVp-p
%
Unit
W
Continuous, automatic recovery
Note: Dual output models unbalanced load:
±5%.
*Test ripple and noise by
“parallel
cable” method. See detailed operation instructions at Testing of Power Converter section, application notes.
COMMON SPECIFICATIONS
Item
Isolation Voltage
Isolation Resistance
Isolation Capacitance
Switching Frequency
MTBF
Case Material
Weight
--
Test Conditions
Tested for 1 minute and 1mA max
Test at 500VDC
Input/Output,100KHz/1V
Full load, nominal input
MIL-HDBK-217F@25℃
Min.
3000
1000
--
--
1000
Typ.
--
--
35
300
--
5
Max.
--
--
--
--
--
--
Unit
VDC
MΩ
pF
KHz
K hours
g
Plastic(UL94-V0)
ENVIRONMENTAL SPECIFICATIONS
Item
Storage Humidity
Operating Temperature
Test Conditions
Non condensing
Power derating (above 71
℃
)
Min.
--
-40
Typ.
--
--
Max.
95
85
A/4-2012
Unit
%
°C
Page 2 of 6
The copyright and authority for the interpretation of the products are reserved by MORNSUN
WRE_CKS-1W &WRF_CKS-1W
Storage Temperature
Temp. rise at full load
Lead Temperature
Cooling
Ta=25°C
1.5mm from case for 10 seconds
-55
--
--
--
15
--
125
--
300
Free air convection
°C
EMC SPECIFICATIONS
EMI
EMS
CE
ESD
EFT
Surge
CISPR22/EN55022
IEC/EN61000-4-2
IEC/EN61000-4-4
IEC/EN61000-4-5
CLASS A（External Circuit Refer to Figure1）
Contact
±2KV
±2KV
±4KV
perf. Criteria B
perf. Criteria B（External Circuit Refer to Figure 1）
perf. Criteria B（External Circuit Refer to Figure 1）
EMC RECOMMENDED CIRCUIT
FUSE
Vi n
+
MO V
GND
TVS
C0
C1
C2
LD M1
LDM2
C3
Vi n
+Vo
EUT
GND
-Vo
(0V)
L O AD
①
(Figure1)
②
C4
WRE_CKS-1W
recommended external circuit parameters:
Model
FUSE
MOV
EMS
LDM1
TVS
C0
C1
LDM2
EMI
C2
C4
--
--
--
--
--
100pF/3KV
2.2μF/50V
1000pF/3KV
--
--
SMCJ13A
680μF/16V
4.7μF/50V
4.7μH
WRE05_CKS-1W
WRE12_CKS-1W
WRE24_CKS-1W
WRE48_CKS-1W
Choose according to practical input current
--
--
SMCJ28A
680μF/25V
4.7μF/50V
6.8μH
10D560K
56μH
SMCJ48A
120μF/50V
4.7μF/50V
4.7μH
10D101K
56μH
SMCJ90A
120μF/100V
4.7μF/100V
4.7μH
WRF_CKS-1W
recommended external circuit parameters
Model
FUSE
MOV
EMS
LDM1
TVS
C0
C1
LDM2
EMI
C2
C3
C4
--
--
SMCJ13A
680μF/16V
4.7μF/50V
4.7μH
--
--
1000pF/3KV
WRF05_CKS-1W
WRF12_CKS-1W
WRF24_CKS-1W
WRF48_CKS-1W
Choose according to practical input current
--
--
SMCJ28A
680μF/25V
4.7μF/50V
4.7μH
1μF/50V
--
--
10D560K
56μH
SMCJ48A
120μF/50V
4.7μF/50V
4.7μH
1μF/50V
1000pF/3KV
1000pF/3KV
10D101K
56μH
SMCJ90A
120μF/100V
4.7μF/100V
4.7μH
2.2μF/100V
1000pF/3KV
1000pF/3KV
Note: 1. In Figure 1,part
①
is EMS Recommended external circuit, part
②
is EMI recommended external circuit. Choose according to requirements.
2. If there is no recommended parameters, the model no require the external component.
The copyright and authority for the interpretation of the products are reserved by MORNSUN
WRE_CKS-1W &WRF_CKS-1W
A/4-2012
Page 3 of 6
EMC RECOMMENDED CIRCUIT PCB LAYOUT
(Figure 2)
PRODUCT TYPICAL CURVE
100
Operating Temp.(
C
)
Efficiency VS Input Voltage
(Full load)
WRE2405CKS-1W
85
83
81
Efficiency VS Input Voltage
(Full load)
WRF1205CKS-1W
85
83
81
Efficiency(%)
79
77
75
73
71
69
67
Efficiency(%)
79
77
75
73
71
69
67
65
18
27
19.8
21.6
23.4
25.2
28.8
30.6
32.4
34.2
36
10
11
12
13
14
15
16
17
Input Voltage(V)
Input Voltage(V)
Efficiency VS Output Load curve
WRE2405CKS-1W
(Vin=Vin-nominal)
WRF1205CKS-1W
Efficiency VS Output Load curve
WRE2405CKS-1W
(Vin=Vin-min)
WRF1205CKS-1W
90
80
70
Efficiency(%)
90
80
Efficiency(%)
60
50
40
30
20
10
0
10
20
30
40
50
60
70
80
90
100
Output Current Percent(%)
70
60
50
40
30
20
10
0
10
20
30
40
50
60
70
80
90
100
Output Current Percent(%)
The copyright and authority for the interpretation of the products are reserved by MORNSUN
WRE_CKS-1W &WRF_CKS-1W
A/4-2012
18
65
9
Page 4 of 6
OUTLINE DIMENSIONS, RECOMMENDED FOOTPRINT & PACKAGING
MECHANICAL DIMENSIONS
RECOMMENDED FOOTPRINT
∅1.00
[0.039]
(Fro nt View )
0.5 0[0. 020]
12.00
[ 0.472]
1
2
3
5
6
7 8
4.10 [0.161]
0.50[0.020]
22.00 [0.866]
Note: grid 2.54*2.54mm
.
0.30 [0.0 12]
TUBE OUTLINE DIMENSIONS
12.40 [0.488]
9.50
[0.374]
(Bo ttom Vie w)
1
2
3
5
6
7
8
2.54[0.100]
17.78[0.700]
FOOT PRIN T DETAILS
Pin
Single
Dual
GN D
1
GND
Vin
Vin
2
C TRL
3
CTR L
5
NC
NC
6
+Vo
+Vo
7
0V
0V
-Vo
8
CS
N C: N o c onnection
Note:
Unit:mm[inc h]
Pin s ec tion toleranc es :
±
0.10mm[
±
0.004inc h]
General toleranc es :
±
0.25mm[
±
0.010inc h]
6.40 [0.252]
Note:
Unit :mm[inch]
General tolerances:
±
0.50mm[
±
0.020inch]
L=530mm[20.866inch] Devices per tube quantity: 22pcs
L=220mm[8.661inch]
Devices per tube quantity: 8pcs
Short tube inner package dimensions: L*W*H= 255*170*80mm
Short tube outer package dimensions(with six inner package boxes):
L*W*H= 375*280*270mm
Long tube inner package dimensions: L*W*H= 580*200*100mm
Long tube outer package dimensions(with two inner package boxes):
L*W*H= 600*215*220mm
Long tube outer package dimensions(with three inner package boxes):
L*W*H= 600*215*325mm
TEST CONFIGURATIONS
Input Reflected-Ripple Current Test Setup
Input reflected-ripple current is measured with an inductor Lin and Cin to simulate source impedance.
Oscilloscope
Lin
Cin
Current
Probe
DC DC
20. 40[0 .803]
Load
Lin(4.7µH)
Cin(220µF, ESR < 1.0Ω at 100 KHz)
DESIGN CONSIDERATIONS
1) Requirement on output load
To ensure this module can operate efficiently and reliably, During operation, the minimum output load
could not be less than 10% of the full load.
If the actual output power is very small, please connect a resistor with proper resistance at the output end in parallel to increase the load, or use our
company’s products with a lower rated output power.
2) Overload Protection
Under normal operating conditions, the output circuit of these products has no protection against overload. The simplest method is add a circuit
breaker to the circuit.
3) 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 3).
It should also be noted that the inductance and the frequency of the
“LC”
filtering network should be staggered with the DC/DC frequency to avoid
mutual interference. 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 must less than the Max.
Capacitive Load.
General: Cin： 5V,12V
100μF;
24V,48V
10μF
Cout：47μF（Typ.）
Lin： 4.7μH½120μH
Lout： 2.2μH½10μH
Cs： 10μF½22μF
The copyright and authority for the interpretation of the products are reserved by MORNSUN
WRE_CKS-1W &WRF_CKS-1W
14. 40[0. 567]
2.50
[ 0.098 ]
A/4-2012
Page 5 of 6
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