INPUT SPECIFICATIONS
Item
Test conditions
3.3V input
5V input
Input current
(No load/Full load)
12V input
15V input
24V input
3.3V input
5V input
Surge voltage
(1S max)
12V input
15V input
24V input
Min.
Typ.
50/420
30/260
12/110
12/100
7/55
7
9
18
21
30
V
mA
Max.
Units
TYPICAL CHARACTERISTICS
OUTPUT SPECIFICATIONS
Item
Output power
Line regulation
Load regulation
Output voltage accuracy
Temperature drift
Ripple & Noise*
Switching frequency
100% full load
20MHz Bandwidth
Full load, nominal input
100
100
For Vin change of
±1%
10% to 100% load
Test conditions
Min.
0.1
±1.1
10
Typ.
Max.
1
±1.5
20
±0.03
200
Units
W
%
Follow the tolerance envelope graph
%/°C
mVp-p
kHz
Operating Temp.(
o
C)
RECOMMENDED CIRCUIT
D u al Ou tpu t
*Test ripple and noise by
“parallel
cable” method. See detailed operation instructions at Testing
of Power Converter section, application notes.
L
L
Cout
Vin
Cin
+Vo
0V
-Vo
DC DC
L
ISOLATION SPECIFICATIONS
Item
Isolation voltage
Isolation resistance
Isolation Capacitance
Test conditions
Tested for 1 minute and 1 mA max
Test at 500VDC
Min
3000
1000
GND
L Cout
L
Typ
Max
Units
VDC
MΩ
Sin gle Ou tp ut
Vin
Cin
+Vo
DC DC
(
Figure 1)
Cout
GND
0V
6
15
PF
D ual Output
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
Vin
GND
REG
REG
+Vo
0V
DC DC
REG
-Vo
+Vo
Single Output
Vin
GND
REG
REG
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.
DC DC
0V
(
Figure 2)
Recommended capacitance(Table 1)
Vin
(VDC)
5
12
15
24
Cin
(uF)
4.7
2.2
2.2
1
Single Cout
output (uF)
(VDC)
5
9
12
15
10
4.7
2.2
1
Dual
output
(VDC)
±5
±9
±12
±15
Cout
(uF)
4.7
2.2
1
0.47
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).
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.
⑤
No parallel connection or plug and play
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
A/4-2010
Page 2 of 3
MORNSUN [ MORNSUN SCIENCE& TECHNOLOGY LTD. ]
