B0505YS-1W Datasheet, PDF (2/2 Pages) MORNSUN Science& Technology Ltd. – SINGLE OUTPUT DC-DC CONVERTER

APPLICATION NOTE
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 (B_YS-W2 Series).
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
L
Vin
L
+Vo
C
C
DC DC
0V
GND
LC
-Vo
(Figure 1)
Vin
REG
+Vo
DC DC
GND
0V
Vin
GND
REG
+Vo
DC DC
0V
(Figure 2)
EXTERNAL CAPACITOR TABLE
Vin
Cin
Vout
Cout
(VDC)
(µF)
(VDC)
(µF)
5
4.7
5
10
It’s not recommended to connect any external
capacitor in the application field with less than
0.5 watt output.
OUTLINE DIMENSIONS & FOOTPRINT DETAILS
MECHANICAL DIMENSIONS
RECOMMENDED FOOTPRINT
∅1.00 [0.039]
(Front View) 10.00 [0.394]
1 234
0.50 [0.020]
7.62[0.300]
4.10 [0.161]
0.30[0.012]
11.60[0.457]
(Bottom View)
1 2 34
0.50[0.020]
6.00[0.236]
0.90 [0.035]
Note:grid 2.54*2.54mm .
TUBE OUTLINE DIMENSIONS
9.60[0.378]
FOOTPRINT DETAI LS
Pin
Fu n c t io n
1
Vin
2
GND
3
0V
4
+Vo
Note:
Unit:mm[inch]
Pin section tolerances: ±0.10mm[±0.004inch]
General tolerances:±0.25mm[±0.010inch]
Note:
4.90[0.193]
Unit :mm[inch]
General tolerances: ±0.50mm [±0.020inch]
L=530mm[20.866inch] pcs/tube: 43
L=220mm[8.661inch] pcs/tube: 17
Short tube inner package dimensions: L*W*H= 255*170*80mm
Short tube outer package dimensions(with six inner package boxes):
L*W*H= 375*280*270mm
Long tube inner package dimensions: L*W*H= 580*200*100mm
Long tube outer package dimensions(with two inner package boxes):
L*W*H= 600*215*220mm
Long tube outer package dimensions(with three inner package boxes):
L*W*H= 600*215*325mm
Note:
1. Operation under minimum load will not damage the converter; However, they may not meet all specification listed, and that will reduce the life
of product.
2. All specifications measured at Ta=25°C, humidity<75%, nominal input voltage and rated output load unless otherwise specified.
3. Only typical models listed, other models may be different, please contact our technical person for more details.
4. In this datasheet, all the test methods of indications are based on corporate standards.
The copyright and authority for the interpretation of the products are reserved by MORNSUN
Specifications subject to change without notice.
B0505YS-1W
A/4-2012
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