B-XN2S-1W

B-XN2S-1WSeries
Isolated 1W Single Output DC/DC Converters
SELECTION GUIDE
FEATURES
Footprint from 0.69cm2
◆
I/O isolation voltage 1000VDC
Input
Voltage
(V)
Output
Voltage
(V)
Output
Current
(MA)
Input Current
(Rated Load)
(MA)
Efficiency
Order code
B0505XN2S-1W
5
5
200
289
B0509XN2S-1W
5
9
111
B0512XN2S-1W
5
12
B0515XN2S-1W
5
B0524XN2S-1W
(%)
(KHRS)
69
30
3415
260
77
37
3078
83
256
78
33
2205
15
66
250
80
40
1532
5
24
42
248
80
48
900
B1205XN2S-1W
12
5
200
120
69
33
2493
B1209XN2S-1W
12
9
111
116
74
48
2311
B1212XN2S-1W
12
12
83
110
76
55
1780
B1215XN2S-1W
12
15
66
111
75
52
1313
B2405XN2S-1W
24
5
200
60
70
40
201
B2409XN2S-1W
24
9
111
55
75
59
185
B2412XN2S-1W
24
12
83
52
80
78
163
B2415XN2S-1W
24
15
66
52
80
79
136
B4805XN2S-1W
48
5
200
30
70
32
213
B4809XN2S-1W
48
9
111
28
75
50
194
B4812XN2S-1W
48
12
83
26
80
76
164
B4815XN2S-1W
48
15
66
26
80
75
140
◆
Operating Temperature: -40℃～﹢85℃
◆
High efficiency up to 80%
◆
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
◆
MTTF1
Isolation
Capacitance
(PF)
1. Calculated using MIL-HDBK-217F with nominal input voltage at full load.
All specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise specified.
No heatsink required
◆
Dual output from a single input rail
◆
UL 94V-0 package material
◆
No external components required
◆
Industry standard pinout
◆
Power sharing on output
◆
Input Characteristics
Parameter
Conditions
MTTF up to 3.4 million hours
◆
MODEL SELECTION
①
②
③ ④
⑤ ⑥
⑦
B 05 05 X N2 S -1W
Voltage range
①Product Series
②Input Voltage
③Output Voltage
④Fixed Input
⑤Negation output & pin in the following
⑥SIP Package
⑦Rated Power
Min.
Typ.
Max.
Units
Continuous operation,5V input
4.5
5
5.5
VDC
Continuous operation,12V input
10.8
12
13.2
VDC
Continuous operation, 15V input
13.5
15
16.5
VDC
Continuous operation,24V input
21.6
24
26.4
VDC
Continuous operation,48V input
43.2
48
52.8
VDC
20
40
mA p-p
Reflected ripple current
APPLICATIONS
The B-XN2S-1W series of DC/DC converters
is particularly suited to isolating and/or
converting DC power rails. The galvanic
isolation allows the device to be configured to
provide an isolated negative rail in systems
where only positive rails exist. The wide
temperature range guarantees startup from
-40°C and full 1 watt output at 85°C.
For lower ripple,refer to output ripple reduction
section.
MICRODC RESERVES THE COPYRIGHT
http://www.microdc.cn
Absolute Maximum Ratings
Parameter
Conditions
Lead temperature 1.5mm from case for 10 seconds
300℃
Internal power dissipation
700mW
Input voltage V , B05 types
7V
Input voltage Vin, B12 types
15V
Input voltage Vin, B15 types
18V
Input voltage Vin, B24 types
28V
Input voltage Vin, B48 types
54V
Technical Enquiries-Email:[email protected] Tel:0086-20-86000646
Page 1 of 4
B-XN2S-1WSeries
Output Specifications
Parameter
Conditions
Max.
Units
Rated Power
TA= -40°C to 120°C
1.0
W
Rated Power(B24、B48)
TA=0°C to 70°C
1.0
W
Voltage Set Point Accuracy
See tolerance envelope
Line regulation
High VIN to low VIN
1.2
%%
Line regulation(B24、B48)
High VIN to low VIN
1.2
%%
10% load to rated load, 5V output types
15
%
10% load to rated load,all other output types
10
%
Load regulation(B24、B48)
Load regulation(5Vinput、
12Vinput)
Load regulation(15V input)
Ripple＆Noise(B24、B48)
Min.
Typ.
1.0
10% load to rated load, 5V output types
10
12.5
%
10% load to rated load, 9V output types
9
10
%
10% load to rated load,12V output types
6.5
7.5
%
10% load to rated load,15V output types
6
7.0
%
10% load to rated load, 5V output types
5.5
10
%
10% load to rated load,12V output types
2.6
3.0
%
10% load to rated load, 15V output types
2.3
3.0
%
150
mV p-p
BW=DC to 20MHz, all input types
Ripple＆Noise
BW=DC to 20MHz, 5V output types
10
20
mV p-p
BW=DC to 20MHz, 9V output types
7
15
mV p-p
BW=DC to 20MHz, 12V output types
7.5
15
mV p-p
BW=DC to 20MHz, 15V output types
8
15
mV p-p
Isolation Characteristics
Parameter
Conditions
Min.
Isolation voltage
Flash tested for 1 second
1000
Resistance
Viso= 1000VDC
Resistance(B24、B48)
Viso= 500VDC
10
Conditions
Min.
Typ.
Max.
Units
VDC
10
GΩ
GΩ
General Characteristics
Parameter
Switching frequency
Switching frequency(B24、B48)
Typ.
Max.
Units
5V input types
110
kHz
12V input types
140
kHz
15V input types
90
kHz
All input types
100
kHz
Temperature Characteristics
Parameter
Conditions
Min.
Specification
B05、B12、B15
Specification
B24、B48
Storage
Max.
Units
-40
85
℃
0
70
℃
B05、B12、B15
-50
130
℃
Storage
B24、B48
-55
150
℃
Case temperature rise
0505,1205
33
℃
0509,0512,0515,1209,1212,1215
28
℃
1505
26
℃
ambient
1512,1515
17
℃
Cooling
Free air convection
above
Tolerance envelope
O u tp u t P o w e r (W )
Temperature derating graph
5V & 12V Input
24V & 48V Input
7 0° c 8 5° c
Ambient Temperature (
http://www.microdc.cn
Typ.
C)
Technical Enquiries-Email:[email protected] Tel:0086-20-86000646
Page 2 of 4
B-XN2S-1WSeries
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?"
For a part holding no specific agency approvals, such as the B 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-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.
Technical notes
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.
Ripple & Noise Characterisation Method
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
R3
Resistive load to the maximum power rating of the DC/DC converter. Connections should be made via twisted wires
50Ω resistor, carbon film,±1%
Measured values are multiplied by 10 to obtain the specified values.
Differential Mode Noise Test Schematic
http://www.microdc.cn
Technical Enquiries-Email:[email protected] Tel:0086-20-86000646
Page 3 of 4
B-XN2S-1WSeries
OUTLINE DIMENSIONS ＆ FOOTPRINT DETAILS
FOOTPRINT DETAILS
MECHANICAL DIMENSIONS
-4 PIN SIP
SIP Package
Pin
Function
+Vin
-Vin
+Vout
-Vout
1
2
3
4
Specifcations can be changed any time without notice.
NOTICE:Pin in the following
All dimensions in inches ±0.01(mm±
0.01(mm±0.25mm).All pins on a 0.1(2.54) pitch and within ±0.01(0.25)of true position.
Weight: 1.48g (DIP)1.30g (SIP)
No parallel connection or plug and play.
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.
Recommended footprint details
4 PIN SIP Package
TUBE OUTLINE DIMENSIONS
4 PIN SIP Tube
Unless otherwise stated all dimensions in inches (mm) ±0.5mm.
http://www.microdc.cn
Tube length (4 Pin SIP) : 20.47 (520mm ±2mm).
Tube Quantity :25
Technical Enquiries-Email:[email protected] Tel:0086-20-86000646
Page 4 of 4