User's Manual

LED Driver Design Procedures
LED Lighting Control using the MC9S08AW60, Rev. 1
Freescale Semiconductor 21
Figure 2-4. Equations for Boost Converter
V
sat
= Saturation voltage of the output switch.
V
F
= Forward voltage drop of the output rectifier.
V
in
- Nominal input voltage.
V
out
- Desired output voltage.
I
out
- Desired output current.
f
min
- Minimum desired output switching frequency.
V
ripple(pp)
- Desired peak-to-peak output ripple voltage.
For further information, refer to On Semiconductor’s datasheet.