WRA-YS-2W
＆
WRB-YS -2W
Series
WIDE INPUT,ISOLATED & REGULATED Dual/Single Output SIP DC/DC Converter
SELECTION GUIDE
Input
order code
Nominal
Voltage(VDC)
Range
Max*
Output
Current(MA)
Max
Min
Voltage
(VDC)
Efficiency
(%,Typ)
WRA0505YS-2W
5
5
5
5
5
5
5
12
12
12
12
12
12
12
24
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
9.0-18.0
9.0-18.0
9.0-18.0
9.0-18.0
9.0-18.0
9.0-18.0
9.0-18.0
18.0-36.0
18.0-36.0
18.0-36.0
18.0-36.0
18.0-36.0
18.0-36.0
18.0-36.0
18.0-36.0
36.0-72.0
36.0-72.0
36.0-72.0
36.0-72.0
36.0-72.0
36.0-72.0
36.0-72.0
11
11
11
11
11
11
11
22
22
22
22
22
22
22
40
40
40
40
40
40
40
40
80
80
80
80
80
80
80
±200
±83
±67
400
222
167
133
±200
±83
±67
400
222
167
133
±200
±83
±67
500
400
222
167
133
±200
±83
±67
400
222
167
133
±20
±8
±7
40
22
16
13
±20
±8
±7
40
22
16
13
±20
±8
±7
50
40
22
16
13
±20
±8
±7
40
22
16
13
±5
±12
±15
5
9
12
15
±5
±12
±15
5
9
12
15
±5
±12
±15
3.3
5
9
12
15
±5
±12
±15
5
9
12
15
67
72
73
67
72
73
72
73
78
77
75
77
79
80
76
79
78
67
77
79
80
80
75
79
79
75
76
78
78
FEATURES
◆
RoHS compliant
◆
Efficiency up to 86%
◆
SIP Package
◆
Wide temperature performance at full
WRA0512YS-2W
WRA0515YS-2W
WRB0505YS-2W
WRB0509YS-2W
WRB0512YS-2W
WRB0515YS-2W
WRA1205YS-2W
WRA1212YS-2W
WRA1215YS-2W
WRB1205YS-2W
WRB1209YS-2W
WRB1212YS-2W
WRB1215YS-2W
WRA2405YS-2W
WRA2412YS-2W
2 Watt load,-40°C to 85°C
◆
UL 94V-0 package material
◆
No heatsink required
◆
Low ripple and good EMC Features
◆
Industry standard pinout
◆
Power sharing on output
◆
I/O Isolation 1500VDC
◆
Short Circuit Protection(
automatic recovery
)
◆
Internal SMD construction
◆
External On/Off control
◆
2:1 wide input voltage range
WRA2415YS-2W
WRB2403YS-2W
WRB2405YS-2W
WRB2409YS-2W
WRB2412YS-2W
WRB2415YS-2W
WRA4805YS-2W
WRA4812YS-2W
WRA4815YS-2W
WRB4805YS-2W
WRB4809YS-2W
MODEL SELECTION
WRA 05 05 Y S -2W
①
②
③
④
⑤
⑥
WRB4812YS-2W
WRB4815YS-2W
*Input voltage can't exceed this value,or will cause the permanent damage.
①Product
Series
②Input
Voltage
③Output
Voltage
④Wide
(2:1) Input Range
⑤SIP
Package Style
⑥
Rated Power
DESCRIPTION
The WRA_YS-2W&WRB_YS-2W series are specially
designed for applications where a group of polar 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 ≤1500VDC);
3) where the regulation of the output voltage and the
output ripple noise are demanded.
OUTPUT SPECIFICATIONS
Parameter
Test conditions
Min.
Typ.
Max.
Units
Output power
Line regulation
Load regulation
Output voltage accuracy
Temperature drift(Vout)
Output Ripple**
Output Noise**
Switching frequency
Refer to product program
Input voltage from low to high
10% to 100% full load(WRB_YS-2W)
10% to 100% full load(WRA_YS-2W)*
Refer to recommended circuit
Refer to recommended circuit
20MHz Bandwidth
20MHz Bandwidth
100% Full load,input voltage range
0.2
±0.2
±0.5
±0.5
±1
2
±0.5
±0.75
±1.0
±3.0
±0.03
25
25
300
75
75
W
%
%
%
%
%/°C
MV p-p
MV p-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.
MICRODC reserves the copyright
http://www.microdc.cn
Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
Page 1 of 3
WRA-YS-2W
＆
WRB-YS -2W
Series
TEMPERATURE CHARACTERISTICS
Parameter
Storage humidity range
NO-load power consumption
Operating temperature
Storage temperature
Lead temperature
Temp.rise at full load
Cooling
Case material
Short circuit protection
*
MTBF
Weight
1000
5
1.5mm from case for 10 seconds
15
-40
-55
120
85
125
300
35
TYPICAL CHARACTERISTICS
Min.
Typ.
Max.
95
Conditions
Units
%
°C
°C
°C
°C
°C
Temperature Derating Graph
Free air convection
Plastic(UL94-V0)
Continuous,automatic recovery
1
S
K hours
g
*Supply voltage must be discontinued at the end of short circuit duration.
ISOLATION SPECIFICATIONS
Parameter
Isolation test voltage
Isolation resistance
Isolation capacitance
RECOMMENDED CIRCUIT
Min.
1500
1000
35
Test conditions
Flash tested for 1 minute and 1mA max
Test at Viso=500VDC
100KHz,1v
Typ.
Max.
Units
VDC
MΩ
pF
OUTPUT Graph
APPLICATION NOTE
SIZE Graph
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). Lin 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:
5V,12V
100PF
24V,48V
10uF
Cout: 47PF(typ.)
Lin:
4.7PH ~120PH
Lout:2.2PH ~10PH
Cs:
10uF ~ 22uF
2) CTRL Terminal
When open or high impedance,the converter 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 :
3) Input current
EXTERNAL CAPACITOR TABLE (TABLE 1)
While using unstable power source, please ensure the output voltage and ripple voltage do not excced indexes of the
converter. The preceding power source must be able to provide for converter sufficient starting current Ip (Figure 2).
General: Ip≤1.4*Iin-max
Single Vout
Cout
Dual Vout
Cout
(VDC)
5
9
4) No parallel connection or plug and play
(μF)
680
560
470
330
(VDC)
±5
±12
±15
_
(μF)
330
220
150
_
12
15
http://www.microdc.cn
Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
Page 2 of 3
WRA-YS-2W
＆
WRB-YS -2W
Series
OUTLINE DIMENSIONS
＆
FOOTPRINT DETAILS
MECHANICAL DIMENSIONS
RECOMMENDED FOOTPRINT
RECOMMENDED FOOTPRINT
Top view,grid:2.54mm(0.1inch)
diameter:1.00mm(0.039inch)
TUBE OUTLINE DIMENSIONS
Note:
Unit:mm[inch]
Pin section tolerances:±0.10mm[±0.004inch]
General tolerances:±0.25mm[±0.010inch]
FOOTPRINT DETAILS
Pin
1
2
3
5
6
7
8
Single
GND
Vin
CTRL
NC
+V0
0V
CS
Dual
GND
Vin
CTRL
NC
+V0
0V
-V0
Note:
Unit :mm[inch]
General tolerances:
±0.50mm[±0.020inch]
L=530mm[20.866inch] Tube Quantity: 22pcs
L=220mm[8.661inch]
Tube Quantity: 8pcs
When the environment temperature is higher than 71°C, the product output
71°
power should be less then 60% of the rated power. No parallel connection or
plug and play.
No parallel connection or plug and play.
Use dual output simultaneously, forbid opening output pin (0V) to use as single
output.
NC:No connection
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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