All specifications are subject to change without notice.
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TDK-Lambda
CPF1000F 280-*
Series
INSTRUCTION MANUAL
5. Terminal connecting method
In order to use the CPF1000F280 Series, this module must be connected with external components
according to Fig.5-1.
Pay attention to the each wiring. If it is connected to wrong terminal, the power supply will be damaged.
CPF1000F280 series employs conduction cooling method. Use heat sink and fan to dissipate heat.
For selection of heat sink and heat sink dissipation method, refer to the Power Module Application Note.
External noise filter should be connected in order to meet EMI, EMS requirement. Refer to
Evaluation data, Reliability data and IEC61000 Test data of CPF1000F280 series.
TRIM
CNT
Load
＋
－
-Vin
+Vin
IOG
+S
PC
-S
-V
+V
F1
Baseplate
C1
C2
C3
50mm
AUX
SG
+
+
C5
C4
C7
C6
Noise
Filter
Fig.5-1 Basic connection
F1 : External Input Fuse
This CPF1000F280 Series has no built-in fuse.
Use external fuse to acquire various Safety Standards and to further improve safety.
Further, Fast-Blow type fuse must be used per one module. Also, in-rush surge current flows during line throw-
in. Be sure to check I
2
t rating of external switch and external fuse.
Furthermore, fuse must be connected to the +Vin side if –Vin side is used as ground, or fuse must be
connected to –Vin side if +Vin side is used as a ground.
Recommended External Fuse: 10A or Lower
Note) Select fuse based on rated voltage, rated current and surge current capability.
C1 :
To prevent the effect of input line inductance to the power module, connect electrolytic capacitor or ceramic
capacitor bVin and –Vin terminals.
Furthermore, use electrolytic capacitor with small ESR value. Especially take note that during line turn off
at low ambient temperature, power module output will not normally shut down due to unstable C1 voltage.
Also, ripple current flows across this capacitor. Therefore, verify maximum allowable ripple current this
