Data Sheet

GAPTEC-Electronic GmbH & Co. KG
[e-mail] – www.gaptec-electronic.com
Page 3 of 4
1S4A_1.5UP – Rev. 2017-1.4
Specifications subject to change without notice.
1W - Single Output - Fixed Input - Isolated & Unregulated
MINIATURE SIP PACKAGE
1S4A_1.5UP Series
Efficiency
1S4A_0505S1.5UP
1S4A_2415S1.5U
1S4A_0505S1.5UP
1S4A_2415S1.5U
EMC solution-recommended circuit
Typical application circuit
Figure 1
Vin
(VDC)
Cin
(µF)
Single Vout
(VDC)
Cout
(µF)
3.3/5 4.7 3.3/5 10
12 2.2 9 4.7
15 1 12 2.2
24 1 15 1
– – 24 0.47
If it is required to further reduce input and output ripple, a filter capacitor
may be connected to the input and output terminals, see circuit below.
Moreover, choosing a suitable filter capacitor is very important, start-up
problems may be caused if the capacitance is too large. Under the
condition of safe and reliable operation, the recommended capacitive load
values are shown in table on the right.
Output load requirements
In order to ensure the converter can work reliably with high efficiency, the
minimum load should not less than 10% rated load when it is used.
If the needed power is indeed small, please parallel a resistor on the
output side (the sum of the efficient power and resistor consumption
power is not less than 10%).