MICRODC B-XD-2W

B-X(S)D-2WSeries
Isolated 2W Single Output DC/DC Converters
SELECTION GUIDE
Input
Voltage
(V)
Output
Voltage
(V)
Output
Current
(MA)
Input Current
(Rated Load)
(MA)
Efficiency
B0505XS-2W
5
5
400
B0505XD-2W
5
5
400
B0509XS-2W
5
9
◆RoHS compliant
B0509XD-2W
5
B0512XS-2W
◆I/O isolation voltage 1000VDC
FEATURES
◆Operating Temperature: -40℃~﹢85℃
◆High efficiency up to 81%
◆Fully encapsulated toroidal magnetics
◆Internal SMD construction
3
◆Power density up to 0.85W/cm
◆No electrolytic or tantalum capacitors
◆5V,9V,12V and 15V output
◆No heatsink required
◆Dual output from a single input rail
◆UL 94V-0 package material
◆No external compo nents required
◆Industry standard pinout
◆Power sharing on output
◆MTTF up to 3.9 million hours
MODEL SELECTION
MTTF1
(%)
Isolation
Capacitance
(PF)
(KHRS)
470
81
33
3956
470
81
33
3956
222
455
84
40
3682
9
222
455
84
40
3682
5
12
167
450
84
40
3299
B0512XD-2W
5
12
167
450
84
40
3299
B0515XS-2W
5
15
133
450
84
40
2833
B0515XD-2W
5
15
133
450
84
40
2833
B0524XS-2W
5
24
83
442
82
40
2766
B0524XD-2W
5
24
83
442
84
40
2766
B1205XS-2W
12
5
400
200
81
40
2519
B1205XD-2W
12
5
400
200
81
40
2519
B1209XS-2W
12
9
222
190
83
61
2405
B1209XD-2W
12
9
222
190
83
61
2405
B1212XS-2W
12
12
167
190
85
74
2235
B1212XD-2W
12
12
167
190
85
74
2235
B1215XS-2W
12
15
133
185
85
68
2011
B1215XD-2W
12
15
133
185
85
68
2011
B1224XS-2W
12
24
83
99
84
68
1800
B1224XD-2W
12
24
83
99
83
69
1789
B2405XS-2W
24
5
400
104
80
60
2000
B2406XS-2W
24
6
333.3
102
82
58
1850
B2409XS-2W
24
9
222
100
83
65
1980
B2412XS-2W
24
12
167
99
84
78
1800
B2415XS-2W
24
15
133
99
84
58
1760
B2424XS-2W
24
24
83
99
84
68
1800
B2405XD-2W
24
5
400
104
80
60
1850
B2409XD-2W
24
9
222
100
83
65
1886
B2412XD-2W
24
12
167
99
84
78
1986
B2415XD-2W
24
15
133
99
84
58
1801
B2424XD-2W
24
24
83
99
84
68
1850
Order code
①
②
③
④
⑤
⑥
B 05 05 X S -2W
①Product Series
③Output Voltage
⑤SMD Package
②Input Voltage
④Fixed Input
⑥Rated Power
Input Characteristics
Parameter
APPLICATIONS
X(S)D
-2W series of DC/DC converters is
The B_
B_X(S)D
X(S)D-2W
Voltage range
particularly suited to isolating and or converting DC
power rails. The galvanic isolation allows the device to be
Conditions
Min
Typ
Max.
Continuous operation,5V input types
4.5
5
5.5
Continuous operation,12V input types
10.8
12
13.2
Continuous operation,24V input types
21.6
24
26.4
7.5
15
Reflected ripple current
Units
V
mA p-p
configured to provide an isolated negative rail in systems
where only positive rails exist. The wide temperature
range guarantees startup from -40
-40°°C and full 2 watt
output at 85
85°°C. Pin compatibility with the B_LS series
ensures ease of upgradeability.
MICRODC reserves the copyright
Absolute Maximum Ratings
Short-circuit protection2
1 second
Lead temperature 1.5mm from case for 10 seconds
300°C
Internal power dissipation
550mW
Input voltage VIN,B05 types
7V
Input voltage VIN,B12 types
15V
1.Calculated using MIL-HDBK-217FN2 calculation model with nominal input voltage at full load.
2.Supply voltage must
be disconnected at
the end of
the short circuit duration.
All specifications typical at TA=25°C,nominal input voltage and rated output current unless otherwise specified.
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Page 1 of 5
B-X(S)D-2WSeries
OUTPUT CHARACTERISTICS
Parameter
Conditions
Min.
Rated Power1
TA=-40°C to 85°C
0.2
Voltage Set Point Accuracy
See tolerance envelope
Line regulation
Load regulation
10% to 100% load
Typ.
Max.
Units
2
W
High VIN to low VIN
1.05
1.2
%%
3.3V output
12
20
%
5V output
12.8
15
%
9V output
8.3
15
%
12V output
6.8
15
%
15V output
6.3
15
%
24V output
6.0
15
%
Capacitive loading and start up
Typical start up times for this series, with a typical input voltage rise time of 2.2s and output capacitance of 10F, are swn in the table below. The product
series will start into a capacitance of 47F with an increased start time, however, the maximum recommended output capacitanceis 10F
Typical Start-Up Wave Form
Start-up time
B0505XS
444
B0509XS
1120
B0512XS
1930
B0515XS
3470
B1205XS
409
B1209XS
1320
B1212XS
1320
B1215XS
2270
Isolation Characteristics
Parameter
Conditions
Min.
Isolation voltage
Flash tested for 1 second
1000
Typ.
Max.
Units
VDC
Resistance
Viso= 500VDC
1000
MΩ
Conditions
Min.
General Characteristics
Parameter
Switching frequency
Typ.
Max.
60
Units
kHz
Temperature Characteristics
Parameter
Conditions
Min.
Specification
All output types
-40
85
-50
125
Storage
Typ.
Max.
B0505S output types
30
B1205S output types
25
All other output types
20
Units
℃
Case temperature above
ambient
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B-X(S)D-2WSeries
Temperature derating graph
Tolerance envelope
The voltage tolerance envelope shows typical load regulation characteristics for this
product series. The tolerance envelope is the maximum output voltage variation due
to changes in output
OUTPUT RIPPLE REDUCTION
Output ripple reduction
By using the values of inductance and capacitance stated, the output ripple at the rated load is lowered to 5mV p-p max.
Component selection
Capacitor: Ceramic chip capacitors are recommended. It is required that the ESR(Equivalent Series Resistance)should be as low as possible.X7R types are recommended.
The voltage rating should be at least twice(except for 15V output),the rated output voltage of the DC/DC converter.
Inductor: The rated current of the inductor should not be less than of the output of the DC/DC converter. At the rated current, the DC resistance of the inductor should be
such that the voltage drop across the inductor is <2% of the rated voltage of the DC/DC converter. The SRF(Self Resonant Frequency) should be >20MHz.
CHARACTERISATION TEST METHODS
Ripple & Noise Characterisation Method
All measurement to be taken with the following components connected to the UUT as detailed below. 50 Ohm coax cable, solder
connections one end, BNC plug at the other end.
Ripple and noise measurements are performed with the following test configuration.
C1
1μF X7R multilayer ceramic capacitor, voltage rating to be a minimum of 3 times the output voltage of the DC/DC converter
C2
10μF tantalum capacitor, voltage rating to be a minimum of 1.5 times the output voltage of the DC/DC converter with an ESR of less than 100mΩ at 100 KHz
C3
100nF multilayer ceramic capacitor, general purpose
R1
450Ω resistor, carbon fi lm, ±1% tolerance
R2
50Ω BNC termination
T1
3T of the coax cable through a ferrite toroid
RLOAD
Resistive load to the maximum power rating of the DC/DC converter. Connections should be made via twisted wires
Measured values are multiplied by 10 to obtain the specified values.
Differential Mode Noise Test Schematic
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B-X(S)D-2WSeries
Technical notes
ISOLATION VOLTAGE
"Hi Pot Test","Flash Tested","Withstand 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.
Professional Power Module B 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?"
The B_X(S)D-2W series has been recognized by Underwriters Laboratory for functional insulation. 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-acssible 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 B series has toroidal isolation transformers, 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 for better than functional isolation where the wire enamel insulation is always supplemented by a further
insulation system of physical spacing or barriers.
PACKAGE SPECIFICATIONS
MECHANICAL DIMENSIONS
SIP Package
FOOTPRINT
FOOTPRINT
SIP
SIP7
7
DIP14
DIP Package
PIN
Function
PIN
Function
1
+Vin
-Vin
-Vout
+Vout
1
GND
NC
0V
+V0
No Pin
Vin
2
4
6
7
8
9
11
NC No connection
14
Specifcations can be changed any time without notice.
No parallel connection or plug and play.
Note:
All dimensions in inches ±0.01(mm±
0.01(mm±0.25mm).
1. The load shouldn't be less than 10%, otherwise ripple will increase dramatically.
All pins on a 0.1(2.54) pitch and within ±0.01(0.25)of true position.
2. Operation under 10% load will not damage the converter; However, they may not meet all specification listed.
Weight: 2.8g
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.
RECOMMENDED FOOTPRINT DETAILS
4 Pin SIP Package
14 Pin DIP Package
Unless otherwise stated all dimensions in inches (mm) 0.5mm
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Page 4 of 5
B-X(S)D-2WSeries
TUBE OUTLINE DIMENSIONS
4 PIN SIP Tube
Unless otherwise stated all dimensions in inches (mm) ±0.5mm.
14 PIN DIP Tube
Tube length (14 Pin DIP) : 20.47 (520mm ±2mm).
Tube length (4 Pin SIP) : 20.47 (520mm ±2mm).
Tube Quantity :25
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
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for 10 seconds. The pin termination finish on the SIP package type is Tin Plate, Hot Dipped over Matte
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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
Page 5 of 5