WRB-YDK-3W Series

WRB-YDK-3W Series
3W
3W,,Wide Input
Input,,ISOLATED&REGULATED SINGLE OUTPUT DC/DC Converters
Models
Order Code
FEATURES
RoHS compliant
◆
Industry standard footprint
◆
Efficiency to 82%
Nominal
Input
Voltage
Rated
Output
Voltage
Output Current1
Min.Load
Full Load
Input
Current
Full load
Effcienc2
Isolation
(Min.)
Capacitance
MTTF3
V (nom.)
V
mA
mA
mA
%
pF
kHrs
WRB0505YDK-3W
5
5
100-150
400-600
615
66
40
1939
WRB0509YDK-3W
5
9
55-83
222-333
563
72
52
1926
WRB0512YDK-3W
5
12
42-62
166-250
548
71
43
1907
WRB0515YDK-3W
5
15
33-50
133-200
533
73
44
1924
WRB1205YDK-3W
12
5
150
600
362
71
36
1928
WRB1209YDK-3W
12
9
83
333
320
78
52
1916
WRB1212YDK-3W
12
12
62
250
316
78
44
1897
WRB1215YDK-3W
12
15
50
200
308
79
47
1914
WRB2403YDK-3W
24
3.3
227
909
178
70
30
1671
WRB2405YDK-3W
24
5
150
600
174
70
36
1673
WRB2409YDK-3W
24
9
83
333
156
78
52
1663
WRB2412YDK-3W
24
12
62
250
154
80
44
1644
WRB2415YDK-3W
24
15
50
200
150
82
54
1657
WRB4803YDK-3W
48
3.3
227
909
87
71
30
1676
WRB4805YDK-3W
48
5
150
600
87
73
35
1668
WRB4809YDK-3W
48
9
83
333
78
80
52
1663
WRB4812YDK-3W
48
12
62
250
77
81
44
1648
WRB4815YDK-3W
48
15
50
200
76
81
53
1661
◆
Power density 0.90W/cm3
◆
2:1 wide input range
◆
Single isolated output
◆
Short circuit protection
◆
Low profile 24 pin case
◆
UL 94V-0 package material
◆
Operating temperature range -40℃ to 85℃
◆
No heat-sink required
◆
Footprint 4.73cm2
◆
5V, 12V, 24V & 48V input
◆
3.3V, 5V, 9V, 12V & 15V output
◆
INPUT CHARACTERISTICS
Internal SMD construction
◆
Parameter
Fully encapsulated
◆
MODEL SELECTION
①
②
③
④
⑤
⑥
⑦
WRB 12 05 Y D K -3W(600)
①Product Series
②Input Voltage
③Output Voltage
④2:1Wide Input Range
⑤DIP24 Package Style ⑥Footprint Rank Shape
⑦Rated Power(Output current)
APPLICATIONS
The WRB-YDK-3W series is a range of low
profile DC/DC converters offering a single
regulated output over a 2:1 input voltage range.
All parts deliver 3W output power up to 85℃
without heat sinking, except the 4.5V to 9V input
voltage range which should be derated to 2W at
the lower input voltage.A flyback oscillator
design with isolated feedback is used to give
regulation over the full operating range of 25% to
100% of full load. It is strongly recommended
that external capacitors be used on input and
output to guarantee performance over full load
and input voltage range.
Voltage range
Conditions
Min.
All WRB05XX
4.5
All WRB12XX
9
All WRB24XX
18
All WRB48XX
36
Typ.
Max.
Units
5
9
VDC
12
18
VDC
24
36
VDC
48
72
VDC
WRB2403
180
360
mA p-p
WRB4803
140
290
mA p-p
Reflected ripple
All WRB05XX
400
500
mA p-p
current2
All WRB12XX
150
170
mA p-p
All other WRB24XX
290
360
mA p-p
All other WRB48XX
100
127
mA p-p
ABSOLUTE MAXIMUM RATINGS
Short-circuit protection
Continuous
Lead temperature 1.5mm from case for 10 seconds
300°C
Minimum load
25% of rated load
Input voltage 05 types
10V
Input voltage 12 types
20V
Input voltage 24 types
40V
Input voltage 48 types
80V
Internal dissipation
1.7W
1.Refer to power derating graph.
2.Measured at full load with external input/output capacitors, refer to filter circuit 1.
3.Calculated using MIL-HDBK-217F with nominal input voltage at full load (ground benign) at 25°C.
]
All specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise
MICRODC RESERVES THE COPYRIGHT
http://www.microdc.cn
specified
Technical Enquiries-Email:[email protected] Tel:0086-20-86000646
Page 1 of 4
WRB-YDK-3W Series
OUTPUT CHARACTERISTIC
Parameter
Conditions
Min.
Typ.
Max.
Units
Voltage set point accuracy
With external input/output capacitors
±1
±5
%
Low line to high line, 3.3V output with external input/output capacitors
0.05
0.25
%
Low line to high line, all other outputs with external input/output capacitors
0.05
0.5
%
25% load to 100% load, 3.3V output with external input/output capacitors
0.6
1.0
%
25% load to 100% load, all other outputs with external input/output capacitors
0.2
0.5
%
BW = 20Hz to 300kHz, 3.3V output with external input/output capacitors
80
120
mV rms
BW = 20Hz to 300kHz, all other outputs with external input/output capacitors
5
10
mV rms
180
mV p-p
50
100
mV p-p
Typ.
Max.
Units
Line regulation
Load regulation
Ripple1
BW = DC to 100MHz, 3.3V output with external input/output capacitors
Noise
BW = DC to 20MHz, all other outputs with external input/output capacitors
GENERAL CHARACTERISTICS
Parameter
Conditions
Min.
100% load VIN nominal 3.3V output
160
220
kHz
25% load VIN nominal 3.3V output
290
560
kHz
100% load VIN nominal, all other outputs
80
220
kHz
25% load VIN nominal, all other outputs
290
560
kHz
Max.
Units
Switching frequency
TEMPERATURE CHARACTERISTICS
Parameter
Conditions
Min.
Operation
Ambient temperature
-40
85
℃
-50
130
℃
Max.
Units
Storage
Cooling
Typ.
Free air convection
ISOLATION CHARACTERISTICS
Parameter
Conditions
Min.
Typ.
Isolation test voltage
Flash tested for 1 second
100
VDC
Resistance
Viso=500VDC
1
GΩ
TECHNICAL NOTES
ISOLATION VOLTAGE
‘Hi Pot Test’,‘Flash Tested’,‘Withstand Voltage’,‘Proof Voltage’,‘Dielectric Withstand Voltage’&‘Isolation Test Voltage "are all terms that relate to the same thing, a
test voltage, applied for a specified time, across a component designed to provide electrical isolation, to verify the integrity of that isolation.
Microdc Professional Power Module WRB-YDK-3W series of DC/DC converters are all 100% production tested at their stated isolation voltage. This is 1kVDC for 1 second.
A question commonly asked is, “What is the continuous voltage that can be applied across the part in normal operation?”
For a part holding no specific agency approvals, such as the WRB-YDK-3W series, both input and output should normally be maintained within SELV limits i.e. less than 42.4V
peak, or 60VDC. The isolation test voltage represents a measure of immunity to transient voltages and the part should never be used as an element of a safety isolation system.
The part could be expected to function correctly with several hundred volts offset applied continuously across the isolation barrier; but then the circuitry on both sides of the barrier
must be regarded as operating at an unsafe voltage and further isolation/insulation systems must form a barrier between these circuits and any user-accessible circuitry according
to safety standard requirements.
REPEATED HIGH-VOLTAGE ISOLATION TESTING
It is well known that repeated high-voltage isolation testing of a barrier component can actually degrade isolation capability, to a lesser or greater degree depending on materials,
construction and environment. The WRB-YDK-3W series has an EI ferrite core, with no additional insulation between primary and secondary windings of enameled wire. While
parts can be expected to withstand several times the stated test voltage, the isolation capability does depend on the wire insulation. Any material, including this enamel (typically
polyurethane) is susceptible to eventual chemical degradation when subject to very high applied voltages thus implying that the number of tests should be strictly limited. We
therefore strongly advise against repeated high voltage isolation testing, but if it is absolutely required, that the voltage be reduced by 20% from specified test voltage.
This consideration equally applies to agency recognized parts rated for better than functional isolation where the wire enamel insulation is always supplemented by a further
insulation system of physical spacing or barriers.
1. For lower ripple refer to circuit for reduced ripple.
http://www.microdc.cn
Technical Enquiries-Email:[email protected] Tel:0086-20-86000646
Page 2 of 4
WRB-YDK-3W Series
APPLICATION NOTES
Recommended input & output capacitors
Although these converters will work without external capacitors, they are necessary in order to guarantee the full parametric performance over the full line
and load range. All parts have been tested and characterized using the following values and test circuit.
Input Voltage
CIN
Output Voltage
5V, 12V
100µF,25V(0.25Ωat 100KHz)
3.3V
24V, 48V
10µF,100V(1.5Ωat 100KHz)
5V, 12V, 15V
COUT
100µF, 25V (0.25Ω at 100KHz)
LOUT
MPS# - 24100C
Not required
Test circuit, 5V, 12V and 15V output
Recommended circuit for reduced ripple 3.3V output
Output load
The minimum rated load across the whole input voltage range is 25% of the full load output. It is important to take care that the load does not fall below
this as the output ripple will greatly increase. While this condition will not harm the device the resultant increase in output ripple could cause customers’
application to malfunction.
NDY05 POWER DERATING CURVE
Input voltage (V)
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Technical Enquiries-Email:[email protected] Tel:0086-20-86000646
Page 3 of 4
WRB-YDK-3W Series
PACKAGE SPECIFICATIONS
MECHANICAL DIMENSIONS
PIN CONNECTIONS (TOP VIEW)
RECOMMENDED FOOTPRINT DETAILS
All dimensions in inches ±0.01 (mm ±0.25mm). All pins on a 0.1 (2.54)
pitch and within ±0.01 (0.25) of true position.
Unless otherwise stated all dimensions in inches ±0.01 (mm ±0.5mm).
TUBE OUTLINE DIMENSIONS
Unless otherwise stated all dimensions in inches ±0.01 (mm) ±0.5mm.
Tube length : 20.47±0.079 (520mm ±2mm).
Tube Quantity : 15
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:[email protected]
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:[email protected] Tel:0086-20-86000646
Page 4 of 4