※Contact TDK-Lambda concerning items not mentioned or items which are not clear.
3. Inp
3. Inp
3. Inp
3. Input / Output Line Connection
ut / Output Line Connection
ut / Output Line Connection
ut / Output Line Connection
3-1 Fuse
Because there is no built-in fuse, use an external fuse in accordance with Table 3-1.
In addition, when supplying input voltage from one DC power supply to multiple DC/DC converters,
attach a fast breaking fuse to the input of each converter upon use.
Put the fuse on the +Vin side when the
–
Vin side is used for GND, and on the -Vin side when the +Vin side is used for GND.
When a fuse breaks, the Alarm Signal does not operate.
Table 3-1 Recommended Fuse Capacity
Converter Type
CC15-24xxSxx-E
CC30-24xxSxx-E
Fuse Capacity
2A
4A
Converter Type
CC15-48xxSxx-E
CC30-48xxSxx-E
Fuse Capacity
1A
2A
3-2 Input Side External Capacitor
This converter is equipped with a capacitor on the input side and does not need an external capacitor to be attached to the input
terminal side when the length of the line connection from the DC power source is short (less than 1 meter is estimated).
However, when the line to the input terminal is long, or when the inductance increases, operation may become unstable, therefore
insert external capacitor Cin between the +Vin and
–
Vin terminals.
DC
Input
+Vin
-Vin
Fuse
Lin
Cin
Fig. 3-2-1 Cin is necessary when an inductance filter is inserted in the input line.
DC
Input
+Vin
-Vin
Cin
Fuse
Fig. 3-2-2 Cin is necessary when the input line is long.
Table 3-2 Recommended External Capacitor Cin Values
Converter Type
CC15-24xxSxx-E
CC30-24xxSxx-E
Recommended Cin Value
33μF
68μF
Converter Type
CC15-48xxSxx-E
CC30-48xxSxx-E
Recommended Cin Value
10μF
22μF
