Correspond to Analog Ciruits, Ultra Low Noise 8mVp-p
Small Size, Long-Life, Isolated Type DC-DC Converter
1.5 Watt VY-L Series
<Soldering Conditions>
<Temperature Derating>
Soldering is to be executed under the following conditions.
Use VY-L series within the ambient temperature in the figure below.
1. Soldering iron
2. Soldering dip
340°C to 360° C, 2sec.
230°C±5°C, 5 sec.
Capable temp. range for startup (no guarantee)
100
90
80
70
60
50
40
30
20
10
<Cleaning Conditions>
This product can not be washed whole. When and if cleaning should
be necessary, use IPA and hand-wash only the soldered surface
by brush cleaning.
For further information, contact us.
<To prevent reverse input voltage protection (ex.)>
VY-L series will be damaged if the input voltage is connected reversed.
lf there is a possibility of reverse connection, add a protection circuit
as shown in the figure below.
0
-30-20-10 0 10 20 30 40 50 60 70 80
Ambient Temp. (℃)
The figure below is an example using the fuse and diode.
Figure 14
<Input Voltage Derating>
Input Voltage Derating
100
Figure 13
90
80
<Over-Voltage Protection>
70
60
50
VY-L series do not have a built-in over-voltage protection.
As shown in the block diagram, VY-L series drives the transformer by the
switching operation of the primary TR. So this method is of very little
possibility of over-voltage to be occurred by TR damage.
However, to avoid damage at over-voltage mode, in advance, adding a
circuit to intercept the supplying power circuit can be recommended.
40
30
20
10
0
6
4.75
5
5.25
5.5
5.75
Input Voltage (V)
Figure 15
Kaga Electronics/Volgen DC-DC CONVERTERS
www.volgen.com
VOLGEN [ VOLGEN KAGA ELECTRONICS INC. ]
