6. OUTPUT CAPACITANCE
Solve for C
O
:
The closest capacitance totals 40 µF therefore
Δ
i
LED-PP
is:
Determine minimum allowable RMS current rating:
The chosen components from step 6 are:
7. PEAK CURRENT LIMIT
Solve for R
LIM
:
The closest standard resistor is 0.04
Ω
therefore I
LIM
is:
The chosen component from step 7 is:
8. SLOPE COMPENSATION
Solve for R
SLP
:
The chosen component from step 8 is:
9. LOOP COMPENSATION
ω
P1
is approximated:
ω
Z1
is approximated:
T
U0
is approximated:
To ensure stability, calculate
ω
P2
:
Solve for C
CMP
:
To attenuate switching noise, calculate
ω
P3
:
Assume R
FS
= 10Ω
and solve for C
FS
:
The chosen components from step 9 are:
31
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LM3424