※Contact TDK-Lambda concerning items not mentioned or items which are not clear.
3-3 Input Ripple Noise Voltage Reduction (Noise Terminal Voltage Reduction)
This converter has a built-in input filter circuit, in addition, by connecting an input filter as shown in Figure 3-3,
input ripple noise voltage (noise terminal voltage) can be decreased.
DC
Input
+Vin
-Vin
Fuse
L1
C1
Fig. 3-3 Connection Diagram for Input Ripple Noise Reduction Filter
3-4 Prevention of Reverse Connection
This converter does not have a protection circuit to protect against an input voltage reverse polarity connection. Damage may
occur if reverse polarity voltage is applied to the input terminal. When the possibility of the application of reverse polarity voltage
exits, attach an external protection circuit as shown in Figure 3-4.
DC
Input
+Vin
-Vin
Fuse
Fig. 3-4 Reverse Connection Prevention Circuit
3-5 Output Side External Capacitor
When connecting a pulse load to this converter, connect capacitor Cout between the +Vout and
–
Vout terminals.
Pulse
load
+Vout
-Vout
Cout
Fig. 3-5 Output Side External Capacitor Connection Method
Table 3-5 Recommended External Capacitor Cout Values
Converter Type
CCxx-xx03Sxx-E
CCxx-xx05Sxx-E
（3.3V/5.0V 出力）
CCxx-xx12Sxx-E
CCxx-xx15Sxx-E
（12V/15V 出力）
Recommended Cout Value
22 ～ 4700μF
0.1 ～ 2200μF
