5
TDK-Lambda
PFE700SA Series
INSTRUCTION MANUAL
R1 : 470k
Ω
Connect bleeder resistor across AC(L) and AC(N) terminals.
C6, C7 : 1000pF(Ceramic Capacitor
)
Add ceramic capacitor as EMI/EMS countermeasure. Be sure to consider leakage current of your equipment
when adding this capacitor.
High withstand voltage are applied across these capacitor during withstand voltage test depending on the
application. Select capacitors with high withstand voltage rating.
Connect C6 as close as possible to AC(N) terminal, C7 as close as possible to AC(L) terminal.
C8, C9 : 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.
Connect C8 as close as possible to R terminal and -BC terminal, C9 as close as possible to +BC terminal
and -BC terminal.
Recommended Voltage Rating : 450VDC
Note)
Select Capacitor with more than 3A (rms) rating.
C10, C11 : 390uF(Electrolytic Capacitor)
Refer to “Selection Method of External Bulk Capacitor for Boost Voltage” below. Allowable external
capacitance at nominal capacitance value is shown below.
Recommended Voltage Rating : 450VDC
Recommended Total Capacitance : 390uF
‐
1200uF
Note)
1. Do not connect capacitors with more than the above capacitance value as this would result into
power module damage.
2. When using module below -20
℃
ambient temperature, AC ripple of boost voltage, output ripple
voltage might be affected by ESR characteristics of the bulk capacitors. Therefore, be sure to
verify characteristics by actual evaluation.
C12, C13 : 0.033uF
Connect ceramic or film capacitor as EMI/EMS countermeasure and to reduce spike noise.
High withstand voltage is applied across this capacitor during withstand voltage test depending on the
application.
Connect C12 as close as possible to +V terminal, C13 as close as possible to -V terminal.
C14 : 1000pF(Ceramic Capacitor)
Add ceramic capacitor as EMI/EMS countermeasure.
High withstand voltage are applied across this capacitor during withstand voltage test depending on the
application. Select capacitors with high withstand voltage rating.
Connect C14 as close as possible to -BC terminal.