AN701 データシートの表示（PDF） - Vishay Semiconductors

部品番号

コンポーネント説明

メーカー

AN701

Designing High-Frequency DC-to-DC Converters With the Si9114A Switchmode Controller

Vishay Semiconductors 

AN701

Vishay Siliconix

Therefore

NP

1

N NS + 0.35 + 2.86

The primary turns can be derived from the same equation used

for the forward converter output indicator:

LP x IpK

12 mH x 3 A

Nmin + Bmax x Amin + 200 mT x 13 mm2 + 13.85 Turns.

N Nmin + 14 Turns.

For 5 V, the number of turns will then be:

NS + Npx 0.35 + 14 x 0.35 + 4.9 T ] 5 T

In the flyback converter, all windings appear in parallel with

each other, and will track the voltage of the controlled output.

Small variations will be present due to the differences between

Schottky and bipolar rectifiers. It must also be remembered

that this will also cause the bias winding to collapse under short

circuit conditions with possible overpower dissipation.

Document Number: 70575

16-Jan-01

www.vishay.com

19

Share Link: