WRD-YS-1W&WRD-YS-2W
Series
1W&2W,WIDE INPUT,ISOLATED®ULATED Twin Output DC∕DC Converter
SELECTION GUIDE
Input
Order code
Nominal
WRD050505YS-1W
5
5
5
5
5
5
5
5
12
12
12
12
12
12
12
12
24
24
24
24
24
24
24
24
48
48
48
48
48
48
48
48
Voltage(VDC)
Range
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
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
9.0-18
18-36
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
36-72
Max.
11
11
11
11
11
11
11
11
22
22
22
22
22
22
22
22
40
40
40
40
40
40
40
40
80
80
80
80
80
80
80
80
*
Output
No-load
(mA,Typ)
40
40
40
40
40
40
40
40
20
20
20
20
20
20
20
20
10
10
10
10
10
10
10
10
5
5
5
5
5
5
5
5
Current(mA)
Voltage
(VDC)
5/5
9/9
12/12
15/15
5/5
9/9
12/12
15/15
5/5
9/9
12/12
15/15
5/5
9/9
12/12
15/15
5/5
9/9
12/12
15/15
5/5
9/9
12/12
15/15
5/5
9/9
12/12
15/15
5/5
9/9
12/12
15/15
Max.
100/100
55/55
42/42
33/33
200/200
111/111
83/83
67/67
100/100
55/55
42/42
33/33
200/200
111/111
83/83
67/67
100/100
55/55
42/42
33/33
200/200
111/111
83/83
67/67
100/100
55/55
42/42
33/33
200/200
111/111
83/83
67/67
Min.
10/10
5/5
4/4
3/3
20/20
11/11
8/8
7/7
10/10
5/5
4/4
3/3
20/20
11/11
8/8
7/7
10/10
5/5
4/4
3/3
20/20
11/11
8/8
7/7
10/10
5/5
4/4
3/3
20/20
11/11
8/8
7/7
Efficiency
(% ,Typ)
70
71
73
72
67
71
72
73
73
76
78
78
75
77
80
79
76
77
78
77
76
78
80
79
73
75
77
77
75
78
79
78
FEATURES
◆
RoHS compliant
◆
Miniature SIP Package
◆
Operating temperature: -40℃to+85℃
◆
2:1 wide input voltage range
◆
UL 94V-0 package material
◆
No heatsink required
◆
Industry standard pinout
◆
1KVDC isolation
◆
Continuous Short Circuit Protection
◆
Internal SMD construction
WRD050909YS-1W
WRD051212YS-1W
WRD051515YS-1W
WRD050505YS-2W
WRD050909YS-2W
WRD051212YS-2W
WRD051515YS-2W
WRD120505YS-1W
WRD120909YS-1W
WRD121212YS-1W
WRD121515YS-1W
WRD120505YS-2W *
WRD120909YS-2W *
WRD121212YS-2W *
WRD121515YS-2W *
WRD240505YS-1W
WRD240909YS-1W
MODEL SELECTION
WRD
①
05
②
05
③
05
④
Y
⑤
S
⑥
-1W
⑦
①Product
Series
③Output
Voltage 1st
⑤Wide
Input
⑦Rated
Power
②Input
Voltage
④Output
Voltage 2st
⑥SIP
Package
WRD241212YS-1W *
WRD241515YS-1W
WRD240505YS-2W
WRD240909YS-2W
WRD241212YS-2W *
WRD241515YS-2W *
WRD480505YS-1W
WRD480909YS-1W *
WRD481212YS-1W *
APPLICATIONS
The WRD_Y S-1W & WRD_YS-2W series are specially
WRD_Y
WRD_Y
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);
WRD481515YS-1W *
WRD480505YS-2W
WRD480909YS-2W *
2) Where isolation is necessary between input and output
(Isolation Voltage ≤ 1000VDC);
WRD481212YS-2W
WRD481515YS-2W *
3) Where isolation is necessary between Vout1 and Vout2
(Isolation Voltage ≤ 1000VDC);
*Input voltage can’t exceed this value, or will cause the permanent damage.
4) Where the regulation of the output voltage and the
output ripple noise are demanded.
ISOLATION SPECIFICATIONS
Parameter
Isolation test voltage
Isolation resistance
Test conditions
Flash tested for 1 minute and 1mA max(Vin/Vout)
Test at Viso=500VDC(Vin/Vout)
100KHz,1V
Min.
1000
1000
Typ.
Max.
Unit
VDC
MΩ
MICRODC reserves the copyright
Isolation capacitance
80
PF
http://www.microdc.cn
Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
Page 1 of 3
WRD-YS-1W&WRD-YS-2W
Series
OUTPUT SPECIFICATIONS
Parameter
Main output voltage accuracy
Vice output voltage accuracy
Load regulation
Line regulat ion
Temperature drift (Vout)
Ripple & Noise**
Switching frequency
TYPICAL TEMPERATURE CURVE
Min
Typ.
±1
±3
±0.5
±0.2
Test conditions
Refer to recommended circuit
Refer to recommended circuit
10% to 100% full load
Input voltage from low to high
Refer to recommended circuit
20MHz Bandwidth
100% load, input voltage range
Max
±3
±5
±1 *
±0.5
±0.03
Unit
%
%
%
%
%/℃
mVp-p
50
300
100
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.
COMMON SPECIFICATIONS
Parameter
Storage humidity range
Operating temperature
Storage temperature
Lead temperature
Temp.rise at full load
No-load power consumption
RECOMMENDED CIRCUIT
Min.
Typ.
Max.
95
-40
-55
85
125
300
15
0.1
Plastic(UL94-V0)
Continuous
Free air convection
1000
5.8
K hours
Conditions
Units
%
℃
1.5mm from case for 10 seconds
W
Case material
Short circuit protection
Cooling
MTBF
Weight
g
APPLICATION NOTE
1) CS Pin
By connecting a
low ESR capacitor between
this
terminal and
the pin-7(Figure
1),
the output
ripple and noise may be further improved. Generally, the capacitance is no greater than 47uF.
2) Requirement on Output Load
To ensure
output
the
load
this module
is
not
the
can
operate
10%
efficiently
of
the
and
full
reliably,
load,
sharply.
loading,
If
If
During
the
operation,
load
the minimum
is
less
than
is very
for
EXTERNAL CAPACITOR TABLE (TABLE 1)
the
input/output ripple, you can
increase capacitance properly
Vout
(VDC)
5
less
output
than
actual
specified
load,
add
lower
an
output
ripple may
resistor
increase
as
extra
the actual output
or
contact
our
power
minimum
small,
please
other
appropriate
power
company
products.
2W :Cout
(μF)
680
470
330
220
3) Recommended Circuit
If you want to
further decrease
or choose capacitors with low ESR (Figure 1).
However, the capacitance of the output filter capacitor must be proper. If the capacitance is too
big, a startup problem might
reliable
operation is ensured, the greatest capacitance of its filter capacitor sees (Table 1)
Cin:
Lin:
5V & 12V
24V & 48V
10μH-120μH
Cout: 100μF(TYP)
4) Input current
While using unstable power source, please ensure the output voltage and ripple voltage do not
exceed
provide
indexes
for
Ip ≤1.4*Iin-max
of
the
converter.
The
preceding
power
source
must
be
able
to
100μF
10μF-47μF
arise. For every
channel
of
output, provided
the
safe
and
1W : Cout
(μF)
470
330
220
100
9
12
24
When the environment temperature is higher than 71° C, the product
71°
output power should be less than 60% of the rated power.
tha
No parallel connection or plug and play.
converter sufficient starting current Ip (Figure 2). General:
5) No parallel connection or plug and play
http://www.microdc.cn
Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
Page 2 of 3
WRD-YS-1W&WRD-YS-2W
Series
MECHANICAL DIMENSIONS
RECOMMENDED FOOTPRINT
TUBE OUTLINE DIMENSIONS
Note:
Uni t:mm[ inch]
Pin sect ion tolerances:±0.10mm[±0.004inch]
General tolerances:±0.25mm[±0.010inch]
FOOTPRINT DETAILS
PIN
1
2
6
7
8
9
10
FUNCTION
GND
Vin
+V01
0V1
CS
0V2
+V02
Note:
Unit :mm[inch]
General tolerances:±0.50mm[±0.020inch]
L=530mm[20.866inch] Tube Quantity: 18pcs
L=220mm[8.661inch]
Tube Quantity: 8pcs
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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