WRA-YD-2W WRB-YD-2W

WRA-YD-2W&WRB-YD-2W Series
2W, WIDE INPUT, ISOLATED & REGULATED DUAL/SINGLE OUTPUT DC-DC CONVERTER
SELECTION GUIDE
Input
Order code
Output
Voltage(VDC)
Voltage
(VDC)
Current(mA)
Efficiency
(%,Typ)
Nominal
Range
Max.*
Max.
Min.
WRA1205YD-2W
12
9-18
22
±5
±200
±20
75
WRA1212YD-2W
12
9-18
22
±12
±83
±8
78
WRA1215YD-2W
12
9-18
22
±15
±67
±7
78
WRB1203YD-2W
12
9-18
22
3.3
455
45
70
◆2:1 wide input voltage range
WRB1205YD-2W
12
9-18
22
5
400
40
74
◆Operating temperature: -40℃to +85℃
WRB1209YD-2W
12
9-18
22
9
222
22
76
WRB1212YD-2W
12
9-18
22
12
167
16
78
WRB1215YD-2W
12
9-18
22
15
133
13
78
◆No heat sink required
WRA2405YD-2W
24
18-36
40
±5
±200
±20
76
◆No external component required
WRA2412YD-2W
24
18-36
40
±12
±83
±8
78
WRA2415YD-2W
24
18-36
40
±15
±67
±7
79
FEATURES
◆Miniature DIP package
◆1500VDC isolation
◆Industry standard pinout
WRB2403YD-2W
24
18-36
40
3.3
455
45
72
◆Internal SMD construction
WRB2405YD-2W
24
18-36
40
5
400
40
76
◆Short circuit protection(automatic recovery)
WRB2409YD-2W
24
18-36
40
9
222
22
78
◆RoHS Compliance
WRB2412YD-2W
24
18-36
40
12
167
16
80
WRB2415YD-2W
24
18-36
40
15
133
13
79
*Input voltage can ' t exceed this value, or will cause the permanent damage.
MODEL SELECTION
①
②
③ ④
⑤
⑥
WRB 24 05 Y D -2W
①Product Series
③Output Voltage
⑤DIP package style
②Input Voltage
④Wide (2:1) Input Range
⑥Rated Power
OUTPUT SPECIFICATIONS
Parameter
Test conditions
Min.
Typ.
Storage humidity
APPLICATIONS
The
WRA_YD-2W&WRB_YD-2W
Operating temperature
-40
Storage temperature
-55
Temp. rise at full load
series
are
Lead temperature
specially designed for applications where a wide
No-load power consumption
range input voltage power supplies are isolated from
Cooling
the input power supply in a distributed power supply
Short circuit protection
system on a circuit board. These products apply to:
Case material
1) Where the voltage of the input power supply is wide
1.5mm from case for 10 seconds
Units
95
%
85
℃
125
℃
℃
15
300
0.2
℃
W
Free air convection
Continuous, automatic recovery
Plastic(UL94-V0)
MTBF
1000
Weight
range (voltage range≤2:1);
Max.
K hours
4.8
g
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.
ISOLATION SPECIFICATIONS
Parameter
Test conditions
Min.
Isolation voltage
Tested for 1 minute and 1 mA max
1500
Isolation resistance
Test at 500VDC
1000
Isolation Capacitance
Input/Output, 100KHz/1V
Typ.
Max.
VDC
MΩ
85
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http://www.microdc.cn
Technical Enquiries-Email:[email protected] Tel:0086-20-86000646
Units
Page 1 of 3
pF
WRA-YD-2W&WRB-YD-2W Series
TYPICAL CHARECTERISTICS
COMMON SPECIFICATIONS
Parameter
Test conditions
Min.
Typ.
Max
Units
Output power
See above products program
2
W
Positive voltage accuracy
Refer to recommended circuit
0.2
±1
±3
%
Negative voltage accuracy
Refer to recommended circuit
±3
±5
%
Load regulation
From 10% to 100% load
±0.5
±1*
%
Line regulation
Input voltage from low to high
±0.2
±0.5
%
Temperature drift
Refer to recommended circuit
±0.03
%/℃
Ripple & Noise**
20MHz Bandwidth
50
100
mVp-p
Switching frequency
100% load, input voltage range
300
KHz
*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.
RECOMMENDED CIRCUIT
APPLICATION NOTE
1) Requirement on output load
In order to ensure the product operate efficiently and reliably, in addition to a max load (namely full
load), a minimum load is specified for this kind of DC/DC converter. Make sure the specified range of input
voltage is not exceeded, the minimum output load no less than 10% load. If the actual load is less than the
specified minimum load, the output ripple may increase sharply while its efficiency and reliability will
reduce greatly. If the actual output power is very small, please add an appropriate resistor as extra
loading, or contact our company for other lower output power products.
2) Recommended Circuit
All the WRA_YD-2W & WRB_YD-2W series have been tested according to the following
recommended testing circuit before leaving factory (Figure 1). This series should be tested under load.
If you want to further decrease the input/output ripple, you can increase capacitance properly or choose
capacitors with low ESR. 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:
12V
100µF
24V
10µF~47µF
Cout: 10µF/100mA
3) Input Current
When it is used in unregulated power supply, be sure that the fluctuating range of the power supply and
the rippled voltage do not exceed
the module standard. Input current of power supply should afford the
startup current of this kind of DC/DC module (Figure 2)
General: Ip ≤1.4*Iin-max:
4) No parallel connection or plug and play
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Technical Enquiries-Email:[email protected] Tel:0086-20-86000646
Page 2 of 3
WRA-YD-2W&WRB-YD-2W Series
OUTLINE DIMENSIONS & FOOTPRINT DETAILS
MECHANICAL DIMENSIONS
RECOMMENDED FOOTPRINT(TOP VIEW)
TUBE OUTLINE DIMENSIONS
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℃, 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
Microdc Professional Power Module,Inc.
This series is compatible with RoHS soldering systems with a peak wave solder temperature of 300°C
Tel:0086-20-86000646 E-mail:[email protected]
for 10 seconds. The pin termination finish on the SIP package type is Tin Plate, Hot Dipped over Matte
Website:http://www.microdc.cn
Tin with Nickel Preplate. The DIP types are Matte Tin over Nickel Preplate. Both types in this series are
Microdc Professional Power module,Inc.makes no representation that
backward compatible with Sn/Pb soldering systems.
the use of its products in the circuits described herein, or the use of other
technical information contained herein, will not infringe upon existing or
REACH COMPLIANT INFORMATION
future patent rights. Specifications are subject to change without notice.
This series has proven that this product does not contain harmful chemicals, it also has harmful chemical
©2010
substances through the registration, inspection and approval.
Microdc Professional Power Module, Inc. Guangzhou
http://www.microdc.cn
Technical Enquiries-Email:[email protected] Tel:0086-20-86000646
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