MB39A106 Datasheet, PDF (37/46 Pages) Fujitsu Component Limited. – 2-Channel DC/DC Converter IC with Overcurrent Protection Symmetrical-Phase Type

CH2
ESR ≤
≤
∆VO
∆IL
0.05
0.5
−
1
2πfCL
−
1
2π × 300 × 10³ × 150 × 10^−6
≤ 96.5 mΩ
Capacitance value
CH1
CL
≥
∆IL
2πf (∆VO − ∆IL × ESR)
≥
0.39
2π × 300 × 10³ × (0.033 − 0.39 × 0.035)
≥ 10.7 µF
CH2
CL ≥
≥
∆IL
2πf (∆VO − ∆IL × ESR)
0.5
2π × 300 × 10³ × (0.05 − 0.5 × 0.035)
≥ 8.2 µF
Ripple current
CH1
ICLrms ≥
(VIN (Max) − VO)
2√3L
ton
≥
(15 − 3.3) × 0.22
2√3L × 22 × 10^−6 × 300 × 10³
≥ 112.6 mArms
CH2
ICLrms ≥
(VIN (Max) − VO) ton
2√3L
≥
(15 − 5) × 0.33
2√3L × 22 × 10^−6 × 300 × 10³
≥ 114.3 mArms
MB39A106
37