B0303LS-1WR Datasheet, PDF (2/3 Pages) MORNSUN Science& Technology Ltd. – DUAL/SINGLE OUTPUT DC-DC CONVERTER

INTPUT SPECIFICATIONS
Item
Test conditions
5V input
Input current
(No load/Full load)
12V input
15V input
24V input
5V input
Surge voltage
(1S max)
12V input
15V input
24V input
Min Typ Max
30/260
12/110
12/100
7/55
9
18
21
30
Units
mA
V
OUTPUT SPECIFICATIONS
Item
Test conditions
Min. Typ. Max. Units
Output power
Line regulation
Load regulation
For Vin change of ±1%
10% to 100% load
0.1
1
W
±1.1 ±1.5
%
10
20
Output voltage accuracy
Follow the tolerance envelope graph
Temperature drift 100% full load
±0.03 %/°C
Ripple & Noise*
20MHz Bandwidth
100 200 mVp-p
Switching frequency Full load, nominal input
100
kHz
*Test ripple and noise by “parallel cable” method. See detailed operation instructions at
Testing of Power Converter section, application notes.
ISOLATION SPECIFICATIONS
Item
Test conditions
Min Typ Max Units
Isolation voltage
Tested for 1 minute and 1 ₁₀₀₀
mA max
Isolation resistance _{Test at 500VDC}
1000
Isolation Capacitance Input/Output,100KHz/0.1V
6
VDC
MΩ
15
PF
APPLICATION NOTE
① Requirement on output load
To ensure this module can operate efficiently and reliably, During operation, the
minimum output load could not be less than 10% of the full load. If the actual output
power is very small, please connect a resistor with resistance of 10% rated power at the
output end in parallel, or use our company’s products with a lower rated output power
② Overload Protection
Under normal operating conditions, the output circuit of these products has no
protection against overload. The simplest method is to connect a slow-blow fuse in series
at the input end or add a circuit breaker to the circuit.
③ Recommended testing and application circuit
If you want to further decrease the input ripple or the input inrush current, an “LC”
filtering network may be connected to the input and output ends of the DC/DC converter,
see (Figure 1).
It should also be noted that the inductance and the frequency of the “LC” filtering
network should be staggered with the DC/DC frequency to avoid mutual interference.
However, the capacitance of the output filter capacitor must be proper. If the capacitance
is too big, a startup problem might arise. For every channel of output, provided the safe
and reliable operation is ensured, the recommended capacitance of its filter capacitor
sees (Table 1).
④ Output Voltage Regulation and Over-voltage Protection Circuit
The simplest device for output voltage regulation, over-voltage and over-current
protection is a linear voltage regulator with overheat protection that is connected to the
input or output end in series (Figure 2).
⑤ No parallel connection or plug and play.
TYPICAL CHARACTERISTICS
Tolerance Envelope Graph
+10%
+5%
Nominal
Voltage
Typical _{Lo ad L ine}
+2.5%
-2.5%
-7.5%
10%
50%
100%
Output Current (%)
Temperature Derating Graph
120
100
80
60
Safe Operating Area
40
20
0
-40
0
40
85 105 120
Operating Temp.(^oC)
RECOMMENDED CIRCUIT
Dual Output
L
Vin
L
+Vo
Cout
Cin
GND
DC DC
L ^Cout
0V
-Vo
Sing le Ou tpu t
L
Vin
L
+Vo
Cin
GND
DC DC
Cout
0V
(Figure 1)
Dual Output
Vin
REG
REG
+Vo
G ND
DC DC
0V
REG
-Vo
Single Output
Vin
REG
REG
+Vo
DC DC
G ND
0V
(Figure 2)
Recommended capacitance(Table 1)
Vin Cin Single Cout Dual Cout
(VDC) (μF) output (μF) output (μF)
(VDC)
(VDC)
5
4.7
5
10
±5 4.7
12 2.2
9
4.7 ±9
2.2
15 2.2 12 2.2 ±12 1
24
1
15
1 ±15 0.47
1.The recommended external capacitance please use the
ceramic capacitor;
2. For applications where output power is less than 0.5W in
reality, external capacitors are not recommended.
The copyright and authority for the interpretation of the products are reserved by MORNSUN
Specifications subject to change without notice.
A_S-1WR & B_LS-1WR A/4-2012 Page 2 of 3