Microchip Technology MA330031 Data Sheet
dsPIC33EPXXXGP50X, dsPIC33EPXXXMC20X/50X AND PIC24EPXXXGP/MC20X
DS70000657H-page 34
2011-2013 Microchip Technology Inc.
FIGURE 2-7:
INTERLEAVED PFC
FIGURE 2-8:
BEMF VOLTAGE MEASURED USING THE ADC MODULE
V
AC
V
OUT
+
Op Amp/Comparator
PWM
ADC
PWM
|V
AC
|
k
4
k
3
FET
dsPIC33EP
Driver
V
OUT
-
ADC Channel
FET
Driver
Op Amp/
k
1
k
2
Comparator
Channel
Op Amp/
Comparator
3-Phase
Inverter
PWM3H
PWM3L
PWM2H
PWM2L
PWM1H
PWM1L
FLTx
Fault
BLDC
dsPIC33EP/PIC24EP
AN3
AN4
AN5
AN4
AN5
AN2
Demand
Phase Terminal Voltage Feedback
R49
R41
R34 R36
R44
R52