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Q.There are no products with the needed output voltage in the catalog. Is there any way to get around this?

Power Supplies >  Switching Power Supply >  AC-DC Power Supplies/ DC-DC Converters

A. Below are two ways to handle this situation.

(1) Using an output voltage variable function.
The output voltage can be adjusted with products that have output voltage variable functions such as by connecting the resistance to the output voltage variable terminal TRM.
However, they do not support voltages that exceed the variable ranges stipulated in the specifications.

(2) Stacking multiple output voltages
This method may take up a lot of space with mounting but allows configurations of various kinds of output voltages by changing how they are combined. Please refer to the example below of how output voltages can be stacked and configured.

Figure 1 When stacking output voltages of multiple units of products

*When the power supply does not start up, please connect a diode with as low a forward voltage as possible such as a schottky barrier diode in parallel with the outputs of each of the products to bypass this (1).
Please use a diode where the reverse voltage is twice or more the voltage between the +Vout and -Vout for the bypass.
Please also use it with the output current at the rated current value of the smallest product or below.

Figure 1 When stacking output voltages of multiple units of products

Figure 2 When stacking output voltages of products with ±2 outputs

*Products with ±2 outputs can be used with 2 outputs stacked by opening the COM terminals. Products with ±12 outputs can be used as single-output products with 24V outputs.

Figure 2 When stacking output voltages of products with ±2 outputs
Table 1 Configuration example

Voltages like the ones below can be created through the configuration methods above.
At 10W or below with the CC-E Series

Configuration Output voltage
(initial value)
Settable range of
output voltage
(variable function)
Product with 3.3V output
(single item)
3.3V 3.15 to 3.60V
Product with 5V output
(single item)
5.0V 4.75 to 6.00V
Using 3.3V output x 2 units 6.6V 6.30 to 7.20V
3.3V output + 5V output 8.3V 7.90 to 9.60V
Using 5V output x 2 units 10.0V 9.50 to 12.00V
Product with 12V output
(single item)
12.0V 11.40 to 15.00V
3.3V output + 12V output 15.3V 14.55 to 18.60V
5V output + 12V output 17.0V 16.15 to 21.00V
3.3V output + 5V output + 12V output 20.3V 19.30 to 24.60V
±12V output
(COM terminals not used)
24.0V 22.80 to 30.00V

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