Power Supply User's Manual

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