WRE-YS-1W&WRF-YS-1W
Series
1W, WIDE INPUT,ISOLATED®ULATED DUAL/SINGLE OUTPUT DC-DC CONVERTER
SPRODUCT PROGRAM
Input
Part Number
Nominal
Voltage(VDC)
Range
Max*
Voltage
(VDC)
Output
Current(MA)
Max
Min
(%,Typ)
Efficiency
WRE0505YS-1W
WRE0512YS-1W
WRE0515YS-1W
5
5
5
5
5
5
5
12
12
12
12
12
12
12
24
24
24
24
24
24
24
48
48
48
48
48
48
48
4.5-9.0
4.5-9.0
4.5-9.0
4.5-9.0
4.5-9.0
4.5-9.0
4.5-9.0
9.0-18
9.0-18
9.0-18
9.0-18
9.0-18
9.0-18
9.0-18
18-36
18-36
18-36
18-36
18-36
18-36
18-36
36-72
36-72
36-72
36-72
36-72
36-72
36-72
11
11
11
11
11
11
11
22
22
22
22
22
22
22
40
40
40
40
40
40
40
80
80
80
80
80
80
80
±5
±12
±15
5
9
12
15
±5
±12
±15
5
9
12
15
±5
±12
±15
5
9
12
15
±5
±12
±15
5
9
12
15
±100
±42
±33
200
111
83
67
±100
±42
±33
200
111
83
67
±100
±42
±33
200
111
83
67
±100
±42
±33
200
111
83
67
±10
±4
±3
20
11
8
7
±10
±4
±3
20
11
8
7
±10
±4
±3
20
11
8
7
±10
±4
±3
20
11
8
7
72
76
75
72
74
76
75
76
80
80
76
78
80
80
78
81
81
76
78
81
81
76
80
80
76
78
80
80
FEATURES
◆
Efficiency up to 81%
◆
2:1 wide input voltage range
◆
I/O Isolation 3000VDC
◆
Short circuit protection(automatic recovery)
◆
External On/Off control
◆
Internal SMD construction
◆
Operating temperature: -40℃to +85℃
◆
UL94-V0 package
◆
RoHS Compliance
WRF0505YS-1W
WRF0509YS-1W
WRF0512YS-1W
WRF0515YS-1W
WRE1205YS-1W
WRE1212YS-1W
WRE1215YS-1W
WRF1205YS-1W
WRF1209YS-1W
WRF1212YS-1W
WRF1215YS-1W
WRE2405YS-1W
WRE2412YS-1W
WRE2415YS-1W
WRF2405YS-1W
WRF2409YS-1W
WRF2412YS-1W
WRF2415YS-1W
WRE4805YS-1W
MODEL SELECTION
WRF
①
24
②
05
③
Y
④
S
⑤
-1W
⑥
①Product
Series
③Output
Voltage
⑤Package
Style
②Input
Voltage
④Wide
(2:1) Input Range
⑥Rated
Power
WRE4812YS-1W
WRE4815YS-1W
WRF4805YS-1W
WRF4809YS-1W
WRF4812YS-1W
WRF4815YS-1W
*Input voltage can exceed this value, or will cause the permanent damage.
*Input voltage can't exceed this value,or will cause the permanent damage.
DESCRIPTION
The WRE-YS-1W&WRF-YS-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.
COMMON SPECIFICATIONS
Item
Storage humidity
Operating temperature
Storage temperature
Temp. Rise at full loa
Lead temperature
No-load power consumption
Cooling
Short circuit protection
Case material
MTBF
1000
5
1.5mm from case for 10 seconds
120
Free air convection
Continuous, automatic recovery
Plastic(UL94-V0)
K hour
g
Test conditions
Test Conditions
Min.
Typ.
Max.
95
Units
%
-40
-55
15
300
mW
°C
MICRODC reserves the copyright
Weight
http://www.microdc.cn
Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
Page 1 of 3
WRE-YS-1W&WRF-YS-1W
Series
ISOLATION SPECIFICATIONS
Item
Isolation voltage
Isolation resistance
Isolation capacitance
Test Conditions
Tested for 1 minute and 1mA max
Test at 500VDC
100KHz,1V
Min.
3000
1000
35
Typ.
Max.
Units
VDC
MΩ
pF
APPLICATION NOTE
Temperature Derating Graph
*Supply voltage must be discontinued at the end of short circuit duration.
OUTPUT SPECIFICATIONS
Item
Output power
Positive voltage accuracy
Negative voltage accuracy
Load regulation
Line regulation
Temperature Drift (Vout)
Ripple & Noise**
Switching frequency
Refer to recommended circuit
Refer to recommended circuit
10% to 100% load(WRF_YS-1W)
10% to 100% load(WRE_YS-1W)*
Input voltage from Low To high
Refer to recommended circuit
20MHz Bandwidth
Input voltage range 100% load
25
300
Test conditions
Min.
0.1
±1
±3
±0.5
±0.75
±0.2
Typ.
Max.
1
±3
±5
±0.75
±1.0
±0.5
±0.03
75
%/℃
mVp-p
KHz
%
Units
W
RECOMMENDED CIRCUIT
Single Output
*Dual output models unbalanced load (25/100%):
±5%Max.
**Test
Testing
ripple and
noise by " Parallel
cable " method. See detailed operation instructions
at
of Power Converter section, application notes.
TYPICAL TEMPERATURE CURVE
1) 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).
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:
24V,48V
Cout:
Lin:
Lout:
Cs:
5V,12V
10µF
47µF (Typ.)
4.7µH-120µH
2.2µH-10µH
10µH-22µF
100µF
2) CTRL Terminal
When open or high
impedance,the converter work well; When
this pin
is "high"
the converter
the maximum
shutdown; It should be note that the input current (Ic) should between 5-10mA,exceeding
20mA will cause permanence damage to the converter. The value of R Can be derived as follows :
R
=
3) Input current
V
−
V
−
1 .0
Ic
While using unstable power source, please ensure the output voltage and ripple voltage do not
exceed
indexes
of
the
converter.
The
preceding
power
source
must
be
able
to
Single Vout
External Capacitor Table(Table 1)
Cout
Dual Vout
Cout
provide for converter sufficient starting current Ip (Figure 2).
General: Ip
≤1.4Iin-max
4)
No parallel connection or plug and play
(VDC)
5
9
12
15
(μF)
680
560
470
330
(VDC)
±5
±9
±12
±15
(μF)
330
270
220
150
http://www.microdc.cn
Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
Page 2 of 3
WRE-YS-1W&WRF-YS-1W
Series
OUTLINE DIMENSIONS
＆
FOOTPRINT DETAILS
MECHANICAL DIMENSIONS
RECOMMENDED FOOTPRINT
mm(0.1inch)
diameter:1.00mm(0.039inch)
TUBE OUTLINE DIMENSIONS
FOOTPRINT DETAILS
Pin
1
2
3
5
6
7
8
NC:No connection
Single
GND
Vin
CTRL
NC
+Vo
0V
CS
Dual
GND
Vin
CTRL
NC
+Vo
0V
-Vo
Use dual output simultaneously, forbid opening output pin (0V) to
use as single output.
Note:
1. The load shouldn't be less than 10%, otherwise ripple will increase dramatically.
2. Operation under 10% load will not damage the converter; However, they may not meet all specification listed.
3. All specifications measured at Ta=25°C, humidity<75%, nominal input voltage and rated output load unless otherwise
specified.
4. In this datasheet, all the test methods of indications are based on corporate standards.
5. Only typical models listed, other models may be different, please contact our technical person for more details.
RoHS COMPLIANT INFORMATION
This series is compatible with RoHS soldering systems with a peak wave solder temperature
of 300°C for 10 seconds.
The pin termination finish on the SIP package type is Tin Plate, Hot Dipped over Matte Tin
with Nickel Preplate. The DIP types are Matte Tin over Nickel Preplate. Both types in this
series are backward compatible with Sn/Pb soldering systems.
Microdc Professional Power Module,Inc.
Tel:0086-20-86000646
E-mail:tech@microdc.cn
Website:http://www.microdc.cn
REACH COMPLIANT INFORMATION
This series has proven that this product does not contain harmful chemicals, it also has
harmful chemical substances through the registration, inspection and approval.
http://www.microdc.cn
Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
Page 3 of 3
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