INSTRUCTION MANUAL
PFE500F
Series
TDK-Lambda
<Page>
External Input Fuse
This power module has no internal fuse. Use external fuse to acquire each Safety Standard 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 capability of external switch and fuse.
Recommended External Fuse : F15AH, 250V
Note) Select fuse based on rated voltage, rated current and breaking capacity.
(1) Voltage Ratings
100VAC line : AC125V
200VAC line : AC250V
(2) Current Ratings
Rated current is selected by the maximum input current based on operating conditions and can be
calculated by the following formula.
(Formula 1-1)
Iin (max) : Maximum Input Current
Pout : Maximum Output Power
Vin : Minimum Input Voltage
Eff : Efficiency
PF : Power Factor
(3) Breaking Capacity
The breaking capacity may be subject to the end use application. Please select a suitably rated breaking
capacity fuse for end use application.
For Efficiency and Power Factor values, refer to separate document “PFE500F Series Evaluation Data”.
C1, C4, C5 : 1uF (Film Capacitor)
Ripple current flows through this capacitor. When selecting capacitor, be sure to check the allowable maximum
ripple current rating of this capacitor. Verify the actual ripple current flowing through this capacitor by doing
actual measurement.
Recommended Voltage Rating : 250VAC
Note) Connect C5 as near as possible towards the input terminals of this power module.
Audible noise may occur depending on type of film capacitor.
L1, L2 : 6mH
Add common mode choke coil to conform to EMI/EMS standard. When using multiple modules, connect coil to
each module.
Note) Depending on the input filter used, noise might increase or power module might malfunction due to filter
resonance.
C2, C3, C6, C7, C12: 2,200pF (Ceramic Capacitor)
Connect ceramic capacitor to conform to EMI/EMS standard. Be sure to note the leakage current of your
equipment when connecting this capacitor.
High withstand voltage are applied across this capacitor depending on the application. Select capacitors with
high withstand voltage rating.
R1 : 470kohm
Connect bleeder resistor across AC(L) and AC(N) terminals.
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Iin(max)=
Pout
Vin
×
Eff
×
PF
(Arms)
