F0303S-1WR Datasheet, PDF (2/3 Pages) MORNSUN Science& Technology Ltd. – DUAL/SINGLE OUTPUT DC-DC CONVERTER

INPUT SPECIFICATIONS
Item
Test conditions
3.3V input
Input current
(No load/Full load)
5V input
12V input
15V input
24V input
3.3V input
Surge voltage
(1S max)
5V input
12V input
15V input
24V input
Min. Typ. Max.
50/420
30/260
12/110
12/100
7/55
7
9
18
21
30
Units
mA
V
TYPICAL CHARACTERISTICS
OUTPUT SPECIFICATIONS
Item
Test conditions
Output power
Line regulation
For Vin change of ±1%
Load regulation
10% to 100% load
Output voltage accuracy
Temperature drift
100% full load
Ripple & Noise*
20MHz Bandwidth
Min. Typ. Max. Units
0.1
1
W
±1.1 ±1.5
%
10
20
Follow the tolerance envelope graph
±0.03 %/°C
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 mA max 3000
VDC
Isolation resistance Test at 500VDC
1000
MΩ
Isolation Capacitance Input/Output,100KHz/0.1V
6
15 PF
APPLICATION NOTE
① Requirement on output load
To ensure this module can operate efficiently and reliably, During operation, the
minimum output load is not 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
Operating Temp.(^oC)
RECOMMENDED CIRCUIT
Dual Output
L
Vin
L
+Vo
Cout
Cin
GND
DC DC
L ^Cout
0V
-Vo
Sin gle Ou tp ut
L
Vin
L
+Vo
Cin
GND
DC DC
Cout
0V
(Figure 1)
Dual Output
Vin
REG
REG
+Vo
GND
DC DC
0V
REG
-Vo
Single Output
Vin
REG
REG
+Vo
DC DC
GND
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.
E_S-1WR & F_S-1WR B/0-2012 Page 2 of 3