Cirrus-logic AN374 Bedienungsanleitung PDF herunterladen (Seite 18)

AN374

18 AN374REV2

5 Design Flowchart

Figure 8 shows the flowchart for eliminating incompatible light engines.

Yes

Pick a light engine

candidate across dim

Compute peak currents

for a given transformer

using AN368

Start

Polynomial

approximation

possible?

Non-zero

currents across

dim?

Peak

current 4 times

smaller?

Proceed to choosing

string configuration

No abrupt

change in

current

ratio

Non-

identical string

configurations

across

dim?

Yes

No fundamental

limitations to using

light engine?

Figure 8. Eliminating Incompatible Light Engines

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Cirrus-logic AN374 Bedienungsanleitung Seite 18