D050505NS-1W Datasheet, PDF (2/2 Pages) MORNSUN Science& Technology Ltd. – TWIN OUTPUT DC-DC CONVERTER

ISOLATION SPECIFICATIONS
Item
Test conditions
Min Typ Max Units
Isolation
voltage
Tested for 1 minute and 1mA max(Vin/Vout) 1000
Tested for 1 minute and 1mA max(Vo1/Vo2) 1000
VDC
Isolation
Test at 500VDC (Vin/Vout)
resistance _{Test at 500VDC (Vo1/Vo2)}
1000
1000
MΩ
Isolation
(Vin/Vout)
capacitance _(Vo1/Vo2)
130
pF
130
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
±1.2
%
12.8 15
Output voltage accuracy
Temperature drift
100% full load
See tolerance envelope graph
0.03 %/°C
Ripple & Noise*
20MHz Bandwidth
50 75 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.
Note:
1. All specifications measured at TA=25°C, humidity<75%, nominal input voltage and rated output load
unless otherwise specified.
2. See below recommended circuits for more details.
TYPICAL CHARACTERISTICS
Operating Temp.(^oC)
OUTLINE DIMENSIONS & PIN CONNECTIONS
D_(N)S-1W SIP Package
First Angle Projection
D_(N)D-1W DIP Package
(0.079)
(0.100)
(0.772)
(Bottom View)
1
7
14
11 10 9 8
0.50
(0.020)
RECOMMENDED FOOTPRINT
Top view,grid:2.5 4mm (0. 1inch)
diameter :1. 00mm(0 .039 in c h )
(Side View)
1 2 4567
FOOTPRI NT DETAILS
P in
D_S-1W D_NS-1W
1
Vin
Vin
2
G ND
GND
4
0V1
+ Vo 1
5
+ Vo 1
0V1
6
0V2
+Vo2
7
+ Vo 2
0V2
Note:
U nit:m m(inch)
Pin s ection:0.50*0.30m m(0.020*0.012inch)
Pin s ection tolerances: 0.10mm( 0.004inch)
General tolerances: 0.25mm ( 0.010inch)
14
11 10 9 8
1
7
Pin
D_D-1W D_ND-1W
1
GND
GND
7
NC
NC
8
+Vo2
0V2
9
0V2
+Vo2
10
+ Vo 1
0V1
11
0V1
+ Vo 1
14
Vin
Vin
APPLICATION NOTE
Requirement on output load
To ensure this module can operate efficiently and
reliably, a minimum load is specified for this kind of
DC/DC converter in addition to a maximum load
(namely full load). During operation, make sure the
specified range of input voltage is not exceeded,
the minimum output load is not less than 10% of
the full load, and that this product should never be
operated under no 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.
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).
L
Vin
Cin
GND
DC DC
(Figure 1)
L
Cout
L
Cout
+Vo1
0V1
+Vo2
0V2
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).
EXTERNAL CAPACITOR TABLE (Table 1)
Vin (VDC) Cin (uF) Vout(VDC) Cout (uF)
5
4.7
5
4.7
12
2.2
9
2.2
24
1
12
1
--
--
15
0.47
It’s not recommend to connect any external capacitor in
the application field with less than 0.5 watt output.
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).
Vo1
Vin
REG
0V1
GND
DC DC
Vo2
0V2
REG
+Vout
Vin
GND
DC DC
REG
0V
+Vout
0V
(Figure 2)
Overload Protection
Under normal operating conditions, the output
circuit of these products has no protection against
over-current and short-circuits. The simplest
method is to connect a self-recovery fuse in series
at the input end or add a circuit breaker to the
circuit.
No parallel connection or plug and play.
MORNSUN reserves the copyright
Specifications subject to change without notice.
D_(N)S-1W&D_(N)D-1W A/1-2008
Page 2 of 2