MSB1209MD-3W データシートの表示（PDF） - MORNSUN Science& Technology Ltd.
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MSB1209MD-3W
MORNSUN Science& Technology Ltd.
MSB1209MD-3W Datasheet PDF : 3 Pages
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OUTPUT SPECIFICATIONS
Item
Test conditions
Min. Typ. Max. Units
Output power
See below products program
Positive voltage accuracy Refer to recommended circuit
Negative voltage accuracy Refer to recommended circuit
Load regulation
From 10% to 100% load
Line regulation
Input voltage from low to high
Temperature drift(Vout) Refer to recommended circuit
0.3
3
W
±1 ±3
±3 ±5
±0.5 ±1*
%
±0.2 ±0.5
±0.03 %/°C
Ripple & Noise**
20MHz Bandwidth
50 100 mVp-p
Switching frequency
100% load, nominal input voltage
300
KHz
*Dual output models unbalanced load: ±5%.
**Test ripple and noise by “parallel cable” method. See detailed operation instructions at Testing of Power
Converter section, application notes.
COMMON SPECIFICATIONS
Item
Test Conditions
Min. Typ. Max. Units
Storage humidity
95 %
Operating temperature
-40
85
Storage temperature
Temp. rise at full load
-55
125
°C
15
Lead temperature
1.5mm from case for 10 seconds
300
No-load Power consumption
0.2
W
Cooling
Free air convection
Short circuit protection
Continuous, Automatic Recovery
Case material
D: Plastic (UL94-V0); MD: Steel, Nickel Coated
MTBF
1000
K hours
Weight
15
g
APPLICATION NOTE
Requirement On Output Load
In order to ensure the product operate efficiently and reliably, in addition to a max load
(namely full load), a minimum load is specified for this kind of DC/DC converter. Make sure the
specified range of input voltage is not exceeded, the minimum output load no less than 10%
load. If the actual load is less than the specified minimum load, the output ripple may increase
sharply while its efficiency and reliability will reduce greatly. If the actual output power is very
small, please add an appropriate resistor as extra loading, or contact our company for other
lower output power products.
Recommended Circuit
All the MSA_(M)D-3W & MSB_(M)D-3W Series have been tested according to the following
recommended testing circuit before leaving factory. This series should be tested under load.
Never be tested under no load (see Figure 1).
If you want to further decrease the input/output ripple, you can increase capacitance properly
or choose capacitors with low ESR. 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). Generally: If you want to use the products in high EMI, please choose
our metal packaged products (MSA_MD-3W & MSB_MD- 3W). General:
Cin: 5V&12V 100μF
24V&48V 10μF-47μF
Cout: 10μF/100mA
Input Current
When it is used in unregulated power supply, be sure that the fluctuating range of the power
supply and the rippled voltage do not exceed the module standard. Input current of power
supply should afford the startup current of this kind of DC/DC module (See figure 2), General:
Ip ≤1.4*Iin-max
No parallel connection or plug and play
TYPICAL CHARACTERISTICS
100
Operating Temp.( C )
RECOMMENDED CIRCUIT
Vin
Cin
GND
Single Output
Vin
Cin
GND
DC DC
DC DC
(Figure 1)
+Vout
0V
-Vout
+Vout
0V
Ip
Input Voltage
Range
Input Voltage (V)
Output External Capacitor Table(Table 1)
Single Vout Cout Dual Vout Cout
(VDC)
(uF)
(VDC)
(uF)
5
1000
±5
680
9
680
±9
470
12
470
±12
330
15
330
±15
220
24
220
±24
100
The copyright and authority for the interpretation of the products are reserved by Mornsun
Specifications subject to change without notice.
MSA_((M)D-3W&MSB_(M)D-3W A/2-2009 Page 2 of 3
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