OUTPUT SPECIFICATIONS
TYPICAL CHARECTERISTICS
Item
Test Conditions
Min.
0.15
Typ.
Max.
1.5
Units
W
Output power
See above products program
Temperature Derating Graph
Positive voltage accuracy Refer to recommended circuit
Negative voltage accuracy Refer to recommended circuit
±1
±3
±3
±5
%
Load regulation
Line regulation
Temperature drift
Ripple**
From 10% to 100% load
Input voltage from low to high
Refer to recommended circuit
20MHz Bandwidth
±0.5
±0.2
±2*
±0.75
Safe Operating Area
±0.03 %/°C
20
50
50
mVp-p
100
Noise**
20MHz Bandwidth
Switching frequency
100% load, input voltage range
300
KHz
* Dual output models unbalanced load: ±5%.
**Test ripple and noise by “parallel cable” method. See detailed operation instructions at Testing of Power
Operating Temp.(
C )
Converter section, application notes.
APPLICATION NOTE
RECOMMENDED CIRCUIT
1) 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.
+Vo
0V
Vin
Cout
Cin
DC DC
Cout
GND
-Vo
Single output
Vin
Cin
+Vo
0V
DC
Cout
DC
GND
(Figure 1)
2) Recommended Circuit
All the PWA_(M)D-1W5 & PWB_(M)D-1W5 Series have been tested according to the
following recommended testing circuit before leaving factory. (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 should not be too high, or may
cause start-up problem. For every channel of output, provided the safe and reliable operation is
ensured, the greatest capacitance of its filter capacitor sees (Table 1).If you want to use the
products in high EMI, please choose our metal packaged products (PWA_MD-1W5 &
PWB_MD- 1W5). General:
Ip
Input Voltage
Range
Input Voltage (V)
(Figure 2)
Cin: 24V&48V 10μF~47μF
Cout: 10μF/100mA
Output External Capacitor Table (Table 1)
Single Vout
(VDC)
Cout
(uF)
Daul Vout
(VDC)
Cout
(uF)
3) 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
3.3
5
2200
1000
680
±5
±12
±15
-
680
330
220
-
9
12
15
470
330
-
-
4) No parallel connection or plug and play
The copyright and authority for the interpretation of the products are reserved by MORNSUN
Specifications subject to change without notice.
Page 2 of 3
PWA_(M)D-1W5 & PWB_(M)D-1W5 A/3-2012
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