MB39A214APFT-G-JNERE1 Datasheet, PDF (39/56 Pages) Fujitsu Component Limited. – 2ch DC/DC converter IC with PFM/ PWM synchronous rectification

MB39A214A
Calculate each rating of the output capacitor by the following formula:
V_COUT > V_OUT
V_COUT : Withstand voltage of the output capacitor [V]
V_OUT : Output voltage [V]
ΔI_L
I_RMS ≥
23
I_RMS : Allowable ripple current of output capacitor (effective value) [A]
ΔI_L : Ripple current peak-to-peak value of inductor [A]
When connecting resistance in series configuration while a ceramic capacitor is in use, the resistor rating is
calculated by the following formula.
P_ESR > ^{ESR¯ΔIL2}
12
P_ESR : Power dissipation of resistor [W]
ESR : Resistor value [Ω]
ΔI_L : Ripple current peak-to-peak value of inductor [A]
DS405-00007-1v0-E
39