B0305D-2WR2 Datasheet, PDF (5/5 Pages) MORNSUN Science& Technology Ltd. – DUAL/SINGLE OUTPUT DC-DC CONVERTER

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
Lin(4.7µH) Cin(220µF, ESR < 1.0Ω at 100 KHz)
DESIGN CONSIDERATIONS
1) Requirement on output load
To ensure this module can operate efficiently and reliably, During operation, the minimum output load is not 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) 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, a capacitor filtering network may be connected to the input and output ends of the
DC/DC converter, see (Figure 3).
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).
Dual O utput
Vin
Cin
GN D
DC DC
+Vo
Cout
0V
Cout
-Vo
Single Output
Vin
Cin
GN D
DC DC
+Vo
Cout
0V
(Figure 3)
EXTERNAL CAPACITOR TABLE (Table 1)
Vin Cin
(VDC) (µF)
Single
Vout
(VDC)
Cout
(µF)
Dual
Vout
(VDC)
Cout^#
(µF)
3.3 4.7 3.3
10
±5
4.7
5 4.7
5
10
±9
2.2
9 2.2
9
4.7
±12
1
12 2.2
12
2.2
±15
0.47
15/24 1 15/24 1
±24
0.47
Note: ^# for each output. It’s not recommended to connect any external capacitor in the application field with less than 0.5 watt output.
4) The input and the output of the product are recommended to be connected to ceramic capacitor or electrolytic capacitor.
Using tantalum capacitor may cause risk of failure
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
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