TDK-Lambda CC-P-E Series Manuale utente

TDK-Lambda

1/11 MC005-04-11A

CC15-24xxSxx-E , CC30-24xxSxx-E Series Instruction Manual

1. Standard Connection Method

The connection method shown in Figure 1.

Input Load

+Vin

-Vin

+Vout

-Vout

ALM

Fuse SW

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

The block diagram is shown in Figure 2.

DRIVE

+Vin

-Vin

Control circuit

Auxiliary power

DRIVE

+Vout

-Vout

OCP

Voltage

detection

OVPLVP

+Vin

-Vin

ALM

+Vout

-Vout

Voltage detecyion

(Hysteresis type)

Delay circuit

(20ms～50ms)

Fig. 2 Block Diagram

TDK-Lambda

2/11 MC005-04-11A

3. Input / 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

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.

Input

+Vin

-Vin

Fuse

Lin

Cin

Fig. 3-2-1 Cin is necessary when an inductance filter is inserted in the input line.

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

TDK-Lambda

3/11 MC005-04-11A

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.

Input

+Vin

-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.

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-2403Sxx-E

CCxx-2405Sxx-E

（3.3V/5.0V 出力）

CCxx-2412Sxx-E

CCxx-2415Sxx-E

（12V/15V 出力）

Recommended Cout Value

22 ～ 4700μF 0.1 ～ 2200μF

TDK-Lambda

4/11 MC005-04-11A

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.

Load

+Vout

-Vout

Cout

Input

+Vin

-Vin

Oscilloscope

Bw：100MHz

25mm

1.5m 50Ω　Coaxial Cable

JEITA attachment

R＝50Ω　C＝0.1μF

3.3V，5V output　：　Cout＝22μF

12V，15V output ：　Cout＝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.

TDK-Lambda

5/11 MC005-04-11A

4. Terminal Function / Protection Function / Series Connection・Parallel Connection

4-1 Remote Control (RC Terminal)

When the input voltage is in an ON condition, the RC terminal can be used to control output ON/OFF.

When not using the Remote Control function, either open the RC terminal or connect it to the –Vin terminal.

We recommend connection to the –Vin terminal in order to prevent malfunction caused by noise.

Table 4-1-1 RC Terminal Specifications

Logic RC Terminal Voltage Output Condition

Min. [V] Max. [V]

L Level 0 1.2 ON

or Open

H Level 10 +Vin OFF

※ When the –Vin terminal is used for GND.

 If the RC terminal is set at L Level or open condition, the output is ON.

 If the RC terminal is set at H Level, the output is OFF.

 When the converter is in a latch stop condition because of a protection function, after removing the abnormal factor, use the

Remote Control to turn the output OFF, then turn ON after the lapse of 1 second minimum for recovery to occur.

Qrc

+Vin

-Vin R3

Input

Control

Signal

Qrc

+Vin

-Vin R3

Input RC

Control

Signal

Fig. 4-1-1 RC Terminal Connection Method 1 Fig. 4-1-2 RC Terminal Connection Method 2

Table 4-1-2 Recommended Value of External Resistor R1 when using the RC Terminal

Converter Type CCxx-24xxSxx-E

R1 Recommended Value 22kΩ

R2 (Typical) 91ｋΩ

R3 (Typical) 15kΩ

When a connection method as shown in Fig. 4-1-1 is used, and if capacitance exists between the +Vin and RC terminals, there is

the possibility of the RC terminal voltage becoming unstable because of the capacitance in the case when the input voltage is

changed suddenly (it becomes a factor causing malfunction). In that case, we recommend the connection method shown in Fig.

4-1-2. In addition, the rating of the external transistor used is as follows: Vce: greater than the Vin, Ic: minimum 10mA.

TDK-Lambda

6/11 MC005-04-11A

4-2 Alarm (ALM Terminal)

By means of the ALM terminal the presence / absence of an abnormal state can be monitored.

When not using the alarm output function, set the ALM terminal in the open condition.

-Vin

ALM 8V

(typ)

Sink current

10mA（max)

Fig. 4-2 Alarm Terminal Internal Circuit

 When the output turns OFF as a result of over-current protection, low-voltage protection, over-voltage protection, the

Alarm Signal will operate. At that time, the ALM terminal voltage is L level (the –Vin terminal is 0.3V or less).

 When multiple units are operated in series or in parallel, etc., and the ALM terminals are connected together, when an

abnormality occurs and the alarm signal operates in 1 unit, the other connected units can be stopped.

 Converters having different output voltages can be connected. (This applies only to converters belonging to this series).

 Use the ALM terminal at a maximum sink current of 10mA.

 The maximum number of units to which the ALM terminal can be connected is 20 units.

4-3 Simultaneous Start-Up / Stop (PO Terminal)

By means of the PO terminal, the start-up / stop timing of multiple converter units can be synchronized.

To do so, connect the PO terminals to each other.

When not using the simultaneous start-up / stop function, set the PO terminal in the open position.

 Converters having different output voltages can be connected. (This applies only to converters belonging to this series).

 The maximum number of units to which the PO terminal can be connected is 20 units.

TDK-Lambda

7/11 MC005-04-11A

4-4 Over-Current Protection (OCP) & Low-Voltage Protection (LVP)

These converters are equipped with built-in over-current protection and low-voltage protection circuits.

 When the output current exceeds the over-current setting point the over-current protection circuit operates and the output

voltage begins to fall. When the output voltage falls below 90% of the rated voltage, the low-voltage protection circuit

operates and shuts down the output.

 There is a time lag of approx. 100 ms from the time the LVP circuit detects an abnormality until the output is shut down.

 When the output shuts down, the Alarm signal operates.

 When the output shuts down and operation stops, after the cause of the over-current or low-voltage is removed, recovery

can be achieved either by restarting the input power source or by using the remote control function.

4-5 Over-Voltage Protection

These converters are equipped with a built-in over-voltage protection circuit.

 When the output voltage becomes 115%～145% of the rated voltage, the over-voltage protection circuit operates.

 When the output current is less than 50% of the rated current, depending on the failure mode, operation at voltage exceeding

the upper limit may occur.

 When the output shuts down, the Alarm signal operates.

 When the output shuts down and operation stops, after the cause of the over-current or low-voltage is removed, recovery

can be achieved either by restarting the input power source or by using the remote control function.

4-6 Operation Sequence

The input voltage, output voltage, RC, PO, ALM terminal operation sequence of these converters is shown in Figure 4-6.

RC：OFF RC：ON

Vin

20～50ms

Start-up LVP set

Vout

ALM

OCP set

100ms typ

ALM set ALM reset

Fig. 4-6 Sequence Chart

TDK-Lambda

8/11 MC005-04-11A

4-7 Series Operation

For this converter series, it is possible to operate models of the same type in series.

 The maximum number of converters which can be operated in series is 2.

 When using series operation, connect the +Vin terminal , -Vin terminal ,PO terminal and ALM terminal of each converter to

the same terminal of the other.

Input

+Vin

-Vin

+Vout

-Vout

ALM

Fuse SW

Load

+Vin

-Vin

+Vout

-Vout

ALM

Fuse

LED

Fig. 4-7 Example Series Operation Connection

TDK-Lambda

9/11 MC005-04-11A

4-8 Parallel Operation

For this converter series, it is possible to operate models of the same type in parallel.

 The maximum number of converters which can be operated in parallel is 10.

 When using parallel operation, connect the PO terminal and ALM terminal of each converter to the same terminal of the

other.

 As much as possible, insure that the width, length and material of the wiring used for connecting each converter to the load

are identical. There is the possibility that the current balance will collapse if there is a difference in the wiring from each

respective converter to the load.

Input

+Vin

-Vin

+Vout

-Vout

ALM

Fuse SW

Load

+Vin

-Vin

+Vout

-Vout

ALM

Fuse

LED

Fig. 4-8 Example Parallel Operation Connection

TDK-Lambda

10/11

5. Soldering Conditions / Cleaning Conditions / Installation Method

5-1 Soldering Conditions

【DIP Model】

Perform soldering of the converter to the board according to the conditions shown in Table 5-1.

 Soldering is to be performed only one time per pin.

Table 5-1 Solder Conditions for DIP Models

Method Condition

Solder Dip 260℃ 10 sec Max.

Solder Iron 380℃ 3 sec Max.

【SMD Model】

Lead free solder / high temperature reflow process conditions are shown in Figure 5-1.

 The number of times permitted for reflow is 1 time.

225

Ty2

Ty1

部品表面温度（℃）

ハンダ付け時間（s)

A 'A B B ' C

A '

B '

1.0～3.0℃/sec

Ty1：150±10℃

Ty2：170±10℃

Ty1～Ty2：20～100sec

1.0～4.0℃/sec

TP：MAX　245℃

225℃以上：20～40sec

-1.0～-5.0℃/sec

Fig. 5-1 Reflow Process Conditions for SMD Models

5-2 Washing Conditions

It is recommended not to clean the board after soldering.

If cleaning is required, brush only the terminals so that the cleaning liquid does not adhere to the product.

Then, dry up thoroughly after washing.

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