B0505XT-W2R2 Datasheet, PDF (4/4 Pages) MORNSUN Science& Technology Ltd. – UNREGULATED SINGLE OUTPUT

TEST CONFIGURATIONS
Input Reflected-Ripple Current Test Setup
Input reflected-ripple current is measured with an inductor Lin and Capacitor Cin to simulate source impedance.
Oscilloscope
Lin
DC DC ^Current
Cin Probe
Load
DESIGN CONSIDERATIONS
Lin(4.7µH) Cin(220µF, ESR < 1.0Ω at 100 KHz)
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.
2) Overload Protection
Under normal operating conditions, the output circuit of these products has no protection against overload. The simplest method is to add a circuit
breaker to the circuit.
3) Recommended circuit
If you want to further decrease the input/output ripple, an capacitor filtering network may be connected to the input and output ends of the DC/DC
converter, see (Figure 2).
It should also be noted that the capacitance of 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).
Vin
+Vo
Cin
GND
DC DC
Cout
0V
(Figure 2)
EXTERNAL CAPACITOR TABLE (Table 1)
Vin Cin
Vo
Cout
(VDC) (µF) (VDC) (µF)
5
4.7
5
10
12 2.2
12
2.2
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 regulator and an capacitor filtering network with
overheat protection that is connected to the input or output end in series (Figure 3), the recommended capacitance of its filter capacitor sees (Table 1),
linear regulator based on the actual voltage and current to reasonable selection.
Vin
REG
REG
+Vo
DC DC
GND
0V
(Figure 3)
5) It is not recommended to increase the output power capability by connecting two or more converters in parallel. The product is not
hot-swappable
Note:
1. Operation under minimum load will not damage the converter; However, they may not meet all specifications.
2. Max. Capacitive Load is tested at nominal input voltage and full load.
3. Unless otherwise noted, All specifications are measured at Ta=25°C, humidity<75%, nominal input voltage and rated output load.
4. In this datasheet, all test methods are based on our corporate standards.
5. All characteristics are for listed models, and non-standard models may perform differently.Please contact our technical support for more detail.
6. Please contact our technical support for any specific requirement.
7. Specifications of this product are subject to changes without prior notice.
MORNSUN Science & Technology Co.,Ltd.
Address: No. 5, Kehui St. 1, Kehui development center, Science Ave., Guangzhou Science City, Luogang district, Guangzhou,P.R.China.
Tel: [phone]
Fax:[phone]
E-mail: [e-mail]
Http://www.mornsun-power.com
The copyright and authority for the interpretation of the products are reserved by MORNSUN
B_XT-W2R2 2013.03.01-A/0
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