Cirrus-logic AN374 Manuel d'utilisateur télécharger pdf (Page 19)

AN374

AN374REV2 19

Figure 9 shows a way for selecting the correct second stage string configuration.

Yes

Provide completed light

engine design across

dim and temperature

Not compatible

No hard limitations to

using either

string configuration

Start

Parallel string

configuration

Series string

configuration

Currents

cross at

any dim?

Voltage

Same?

Voltage

same?

Yes

Flyback topology. Series

and parallel string

configurations are sufficient

Buck?

Proceed to selecting

the topology

The series string

configuration has

higher efficiency

Figure 9. Selecting the Correct Second Stage String Configuration

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 34 35

Pas de commentaire

Cirrus-logic AN374 Manuel d'utilisateur Page 19