F0505XD-1W Datasheet, PDF (2/3 Pages) MORNSUN Science& Technology Ltd. – DUAL/SINGLE OUTPUT DC-DC CONVERTER

OUTPUT SPECIFICATIONS
Item
Test conditions
Min. Typ. Max. Units
Output power
Line regulation
For Vin change of 1%
0.1
1
W
±1.2
Load regulation
10% to 100% load (5V output)
10% to 100% load (12V output)
12.8 15
%
6.8 15
Output voltage accuracy
Temperature drift
100% full load
See tolerance envelope graph
0.03 %/°C
Ripple & Noise*
20MHz
E_XD-1W
Bandwidth _{F_XD-1W}
100 150
mVp-p
100 150
Switching frequency
Full load, nominal input
83
kHz
*Test ripple and noise by “parallel cable” method. See detailed operation instructions at Testing of
Power Converter section, application notes.
TYPICAL CHARACTERISTICS
This is output voltage accuracy curve above,
output voltage under different load will be different,
this graph is for reference only.
APPLICATION NOTE
Ambient Temperature( C)
RECOMMENDED CIRCUIT
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.
Dual Output
L
Vin
Cin
GND
DC DC
L
+Vo
Cout
0V
L ^Cout
-Vo
Single Output
L
Vin
L
+Vo
Cin
GND
DC DC
Cout
0V
(Figure 1)
Dual Output
Vin
REG
REG
GND
DC DC
REG
Single Output
Vin
REG
REG
GND
DC DC
(Figure 2)
+Vo
0V
-Vo
+Vo
0V
EXTERNAL CAPACITOR TABLE (TABLE 1)
Vin Cin Single Cout Dual Cout
(VDC) (uF) Vout (uF) Vout (uF)
(VDC)
(VDC)
5
4.7
5
10 ±5 4.7
24
1
12 2.2 ±12 1
It’s not recommended to connect any external
capacitor in the application field with less than
0.5 watt output.
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_XD-1W & F_XD-1W A/2-2012 Page 2 of 3