CC15
CC15----xxxxSxx
CC15CC15
xxxxSxx----E , CC30
xxxxSxxxxxxSxx
E , CC30----xxxxSxxx
E , CC30E , CC30
xxxxSxxx----E Series Instruction Manual
xxxxSxxxxxxxSxxx
1. Standard Connection Method
1. Standard Connection Method
1. Standard Connection Method1. Standard Connection Method
The connection method shown in Figure 1.
E Series Instruction Manual
E Series Instruction ManualE Series Instruction Manual
DC
Input
Fuse
+Vin
-Vin
SW
+Vout
Load
-Vout
PO
RC
ALM
Fig. 1 Connection Method
When not using the Remote Control function, use it with either the RC terminal open or connected to the –Vin terminal.
When not using the Alarm function, use it with the ALM terminal in an open condition.
Use the PO terminal for controling multiple unit operation (series, parallel operation etc.).
For single unit operation, use the PO terminal in an open condition.
The converter is to be operated exclusively on DC input. Use of AC input will cause damage.
2. Block Diagram
2. Block Diagram
2. Block Diagram2. Block Diagram
The block diagram is shown in Figure 2.
+Vin
+Vin
-Vin
-Vin
PO
RC
ALM
Voltage detecyion
(Hysteresis type)
Delay circuit
(20ms～50ms)
Control circuit
OVPLVP
Auxiliary power
DRIVE
OCP
Voltage
detection
Fig. 2 Block Diagram
+Vout
+Vout
+Vout
-Vout
-Vout
DRIVE
※Contact TDK-Lambda concerning items not mentioned or items which are not clear.
3. Inp
3. Input / Output Line Connection
ut / Output Line Connection
3. Inp3. Inp
ut / Output Line Connectionut / 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.
Lin
+Vin
DC
Input
Cin
-Vin
Fuse
Fig. 3-2-1 Cin is necessary when an inductance filter is inserted in the input line.
+Vin
DC
Input
Cin
-Vin
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
※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.
L1
+Vin
DC
Input
C1
-Vin
Fuse
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.
+Vin
DC
Input
-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.
+Vout
Pulse
Cout
-Vout
Fig. 3-5 Output Side External Capacitor Connection Method
Table 3-5 Recommended External Capacitor Cout Values
CCxx-xx03Sxx-E
Converter Type
Recommended Cout Value
CCxx-xx05Sxx-E
（3.3V/5.0V 出力）
22 ～ 4700μF 0.1 ～ 2200μF
load
CCxx-xx12Sxx-E
CCxx-xx15Sxx-E
（12V/15V 出力）
※Contact TDK-Lambda concerning items not mentioned or items which are not clear.
3-6 Output Ripple Noise Voltage Measurement Method
When measuring the output ripple noise voltage of this converter, the value differs greatly, depending on the measurement method.
Measurement is to be made close to the output terminal, do not make a loop when connecting the probe in order to avoid
picking up magnetic flux. Also, note that the measured value will vary greatly as a result of the frequency band of the ripple
voltmeter or oscilloscope used for measuring. The TDK ripple noise measurement is made according to the method shown in
Figure 3-6.
3.3V，5V output ： Cout＝22μF
+Vin
+Vout
12V，15V output ： Cout＝0.1μF
DC
Input
-Vin
Cout
-Vout
Load
25mm
Oscilloscope
Bw：100MHz
R
1.5m 50Ω Coaxial Cable
C
JEITA attachment
R＝50Ω C＝0.1μF
Fig. 3-6 Ripple Noise Voltage Measurement Circuit
【Caution when Adding External Capacitor Cout】
External capacitor Cout may influence the output ripple voltage by the ESR and ESL and inductance of the wiring. In particular,
caution is required if low ESR ceramic capacitors, etc. are connected, resonance will occur between the capacitor and the wiring
inductance and the ripple component may increase.
※Contact TDK-Lambda concerning items not mentioned or items which are not clear.
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