ISOLATION SPECIFICATIONS
Item
Isolation voltage
Isolation resistance
Isolation capacitance
Test conditions
Tested for 1 minute and 1mA max
Test at 500VDC
Min.
6000
1000
10
Typ.
Max.
Units
VDC
MΩ
pF
TYPICAL CHARACTERISTICS
OUTPUT SPECIFICATIONS
Item
Output power
Line regulation
For Vin change of
±1%
10% to 100% load (5V output)
Load regulation
10% to 100% load (9V output)
10% to 100% load (12V output)
10% to 100% load (15V output)
Output voltage accuracy
Temperature drift
Ripple & Noise*
Switching frequency
100% full load
20MHz Bandwidth
Full load,
nominal input
(5V input)
(The other inputs)
150
250
50
12.8
8.3
6.8
6.3
Test conditions
Min.
0.1
Typ.
Max.
1
±1.2
15
15
15
15
%
Units
W
See tolerance envelope graph
±0.03
200
%/°C
mVp-p
kHz
*Test ripple and noise by
“parallel
cable” method. See detailed operation instructions at Testing of
Power Converter section, application notes.
Note: Dual output models unbalanced load:
±5%.
Ambient Temperature
( C )
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 proper resistance at the output end
in parallel to increase the load, or use our company’s products with a lower rated output
power.
2) Recommended testing and application circuit
If you want to further decrease the input/output ripple, 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 greatest capacitance of its filter
capacitor sees (Table 1).
3) 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).
4) Overload Protection
Under normal operating conditions, the output circuit of these products has no
protection against overload. The simplest method is to connect a self-recovery fuse in
series at the input end or add a circuit breaker to the circuit.
5) No parallel connection or plug and play
RECOMMENDED CIRCUIT
Dual Output
L
Vin
Cin
GND
Single Output
L
Vin
Cin
GND
L
+Vo
Cout
DC DC
L Cout
0V
-Vo
L
+Vo
DC DC
Cout
0V
(Figure 1)
Dual Output
Vin
GND
Single Output
Vin
GND
REG
REG
REG
REG
+Vo
0V
DC DC
REG
-Vo
+Vo
DC DC
0V
(Figure 2)
EXTERNAL CAPACITOR TABLE (TABLE 1)
Vin
Cin Single Cout Dual Cout
(VDC) (µF)
Vout
(µF)
Vout
(µF)
(VDC)
(VDC)
5
4.7
5
10
±5
4.7
12
15
2.2
2.2
9
12
4.7
2.2
±9
±12
2.2
2.2
24
1
15
1
±15
1
It’s not recommended to connect any external
capacitor in the application field with less than
0.5 watt output.
The copyright and authority for the interpretation of the products are reserved by MORNSUN
Specifications subject to change without notice.
G_S-1W & H_S-1W
B/1-2010
Page 2 of 3
MORNSUN [ MORNSUN SCIENCE& TECHNOLOGY LTD. ]
