MICRODC WRB-YMD-15W

WRB-YMD-15W Series
Isolated 15W Single Output DC/DC Converter
SELECTION GUIDE
order code
Nominal
Input
Voltage
Input
Voltage range
Output
Output
Voltag
Current
Current Limit
Efficiency
MTTF 2
V
e
V
A
A(MIN.)
A(MAX.)
%
3.3
4.4
7.5
11
81
335
kHrs
WRB2403YMD-15W
18-36VDC
24
FEATURES
WRB2405YMD-15W
18-36VDC
24
5
3
5
7.5
84
286
WRB2412YMD-15W
18-36VDC
24
12
1.25
2.5
3.7
86
286
◆RoHS compliant
WRB2415YMD-15W
18-36VDC
24
15
1
2
3
87
281
WRB4803YMD-15W
36-72VDC
48
3.3
4.4
7.5
11
83
295
WRB4805YMD-15W
36-72VDC
48
5
3
5
7.5
85
301
WRB4812YMD-15W
36-72VDC
48
12
1.25
2.5
3.7
88
302
WRB4815YMD-15W
36-72VDC
48
15
1
2
3
89
296
Units
◆High efficiency to 89%
3
◆Power density up to 2.4W/cm
◆UL 94V-0 package material
◆Industry standard pinout
INPUT CHARACTERISTICS
◆Non latching current limit
◆Constant 350kHz frequency
Parameter
Conditions
Min.
Typ.
Max.
Voltage range
Continuous operation, 24V input types
18
24
36
Continuous operation, 48V input types
36
48
72
Min.
Typ.
Max.
◆1.5kV input to output isolation
V
◆Versatile control options
◆Continuous rating to 15W at 40℃ without
Heatsink
OUTPUT CHARACTERISTICS
Parameter
◆Operation to zero load
50% load
Units
0.5
Case temperature -40oC to 110oC
◆Protected against load faults
Overall voltage error
◆Internal over temperature protection
◆Uses no electrolytic capacitors
MODEL SELECTION
WR
WRB
B①24②03③Y④ MD⑤-15
15W
W⑥
①Product Series
③Output Voltage
⑤Metal Shield
⑦Rated Power
Conditions
Voltage set point error
②Input Voltage
④Wide (2:1) Input Range
⑥DIP Package Style
DESCRIPTION
%
Load 0% - 100%
Input
2.5
specified range
Temperature coefficient
ppmoC
of output voltage (slope
250
Deviation of output
voltage
Temperature MIN-MAX
Line regulation
Operating voltage range, 50% load
Load Regulation
0% - 100% rated load
Ripple
rms
0.5
1
%
0.1
%
70
0.5
mV
Typ.
Max.
ISOLATION CHARACTERISTICS
The WRB-YMD-15W series of DC/DC converters
combines ease of application with versatility. The pin
pattern is based on the popular industry standard, but two
additional pins may optionally be fitted to provide a variety
of features not commonly found on units of this type. High
efficiency enables full rating to be achieved in a small
package without heats inking, and a high surge capability
will provide for start-up and transient loads, whilst being
thermally protected against sustained overload. Overload
protection of the “constant current” type ensures start-up
into complex load conditions. The copper case achieves
efficient heat transfer and screening. The product range
has been recognized by Underwriters Laboratory (UL) to
UL 1950 for operational insulation, file number E179522
applies.
Parameter
Conditions
Min.
Units
Isolation test
Flash tested for 1 second
1500
VDC
Resistance
VISO = 500VDC
1
GΩ
ABSOLUTE MAXIMUM RATINGS
Input voltage, 24V input types
-0.5V to 40V
Input voltage, 48V input types
-0.5V to 80V
Output voltage
-0.3V to regulated voltage
Output trim control
-1V to +30V
Synchronisation/shutdown control
±15V relative to input return
1. Calculated using MIL-HDBK-217F with nominal input voltage at full load.
2. Absolute maximum value for 30 seconds. Prolonged operation may damage the product.
All specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise specified.
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Technical Enquiries-Email:[email protected] Tel:0086-20-86000646
Page 1 of 4
WRB-YMD-15W Series
CONTROL CHARACTERISTICS
Parameter
Conditions
MIN.
Voltage trimming range
At rated load, trim control at either output
±10
TYP.
MAX.
Remote switch input (voltage relative to
Not operating
-15
0
1.5
input negative)1
Operating, open circuit voltage
9
10
11
25
50
ms
440
KHz
395
KHz
Units
%
V
Time from application of valid input
Start Delay
voltage to output being in specification
Synchronisation
Specified drive signal
320
Switching frequency
330
350
1. Calculated using MIL-HDBK-217F with nominal input voltage at full load.
2. Absolute maximum value for 30 seconds. Prolonged operation may damage the product.
All specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise specified.
TEMPERATURE CHARACTERISTICS
MAX.
Units
Full load
-40
110
ºC
Absolute Max. internal temperature
-40
125
Parameter
Case temperature
Storage
Relative humidity
Thermal protection
Conditions
MIN.
TYP.
Non condensing 85ºC
85
Operates at case temperature
%
110
ºC
THERMAL CHARACTERISTICS
Max. permissable loads for a given ambient temperature for any WRB-15W model.
Temperature (ºC)
Power (W)
Temperature (ºC)
Power (W)
40
15
70
11.7
50
15
80
9.8
53
15
85
8.8
60
13.7
90
7.8
Max. power rating with case temperature maintained by external means (e.g. forced air cooling).
Case Temperature
Part Number
Units
100ºC
105ºC
110ºC
WRB2403YMD-15W
19
16
12
WRB2405YMD-15W
22
19
15
WRB2412YMD-15W
25
22
19
WRB2415YMD-15W
26
24
21
WRB4803YMD-15W
20
17
13
WRB4805YMD-15W
23
20
16
WRB4812YMD-15W
28
26
23
WRB4815YMD-15W
30
28
25
W
W
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Technical Enquiries-Email:[email protected] Tel:0086-20-86000646
Page 2 of 4
WRB-YMD-15W Series
THERMAL PERFORMANCE
24V Input
48V Input
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 Power Solutions WR-YMD-15W series of DC/DC converters are all 100% production tested at their stated isolation voltage. This is 1500
VDC for 1 second.
A question commonly asked is, “What is the continuous voltage that can be applied across the part in normal operation?”
The WR-YMD-15W series has been recognized by Underwriters Laboratory, 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. While manufactured parts can 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 specifi ed test voltage.
http://www.microdc.cn
Technical Enquiries-Email:[email protected] Tel:0086-20-86000646
Page 3 of 4
WRB-YMD-15W Series
PACKAGE SPECIFICATIONS
MECHANICAL DIMENSIONS
PIN CONNECTIONS
Pin
Function
1
-VIN
2
+VIN
3*
SS
4
+VOUT
5*
TRIM
6
-VOUT
* Optional pins
The copper case is internally connected to the output (-VOUT) pin. Care is needed in the design of this circuit board on which the converter is mounted. Top side tracks must
not contact the edge of the case or the ferrite core, visible on the underside of the unit.
The case size may be (LXW)50.08mmX 25.4mm.
Please note that from 2010 onwards you may receive either a blue or a black case finish.
RECOMMENDED FOOTPRINT DETAILS
All dimensions in inches ±0.01 (mm ±0.25mm)
* Optional control pins
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
REACH COMPLIANT INFORMATION
E-mail:[email protected]
Website:http://www.microdc.cn
http://www.microdc.cn
This series has proven that this product does not contain harmful chemicals, it also has
harmful chemical substances through the registration, inspection and approval.
Technical Enquiries-Email:[email protected] Tel:0086-20-86000646
Page 4 of 4