AN628 APPLICATION NOTE

18/35

Figure 20.

Figure 21.

The energy transferred from the boost inductor to the bulk capacitor in each cycle is:

where:

L = Boost Inductance

a full rectified (half- sinusoidal) waveform, it is useful to refer to the AC line RMS and peak parameters:

where:

η is the input power

η is the power yeld.

E/cycle

1

2

--- LI

Lp

2

I

Lv

2

–

()

⋅

LI

Lt

I

L

∆

⋅⋅

==

I

Lpk

2I

Lrms

⋅

=