Freescale Semiconductor M68HC08 Stereo System User Manual


 
+ DC BUS
+
AC
LINE
AC
DC
MCU
Reference
Voltage
Actual
Current
Zero
Crossing
L
GND
Comparator
DC Bus
Voltage
-
Current Sensing
IC
ADC
PWM0
+
MOSFET
PWM
FAULT
PIN
PWM1
Control Theory
Dimmable Light Ballast with Power Factor Correction, Rev. 1
18 Freescale Semiconductor
Figure 2-6. Discontinuous Conduction Mode Principle
Figure 2-7. Discontinuous Conduction Mode Current Waveform