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MB39A104

31

CH2

Capacitance value

CH1

CH2

Ripple current

CH1

CH2

ESR ≤

∆V

O

−

1

∆IL 2πfCL

≤

0.033

−

1

0.364 2π × 500 × 10

3

× 82 × 10

−6

≤ 86.8 mΩ

CL ≥

∆IL

2πf (∆VO − ∆IL × ESR)

≥

0.491

2π × 500 × 10

3

× (0.050 − 0.491 × 0.05)

≥ 6.14

µF

CL ≥

∆IL

2πf (∆VO − ∆IL × ESR)

≥

0.364

2π × 500 × 10

3

× (0.033 − 0.364 × 0.05)

≥ 7.83

µF

ICLrms ≥

(V

IN − VO) ton

2√3L

≥

(19 − 5) × 0.263

2√3

× 15 × 10

−6

× 500 × 10

3

≥ 141.7 mArms

ICLrms ≥

(V

IN − VO) ton

2√3L

≥

(19 − 3.3) × 0.174

2√3

× 15 × 10

−6

× 500 × 10

3

≥ 105.1 mArms

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MB39A104 1
FUJITSU LIMITED 36

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