Datasheet

dsPIC33EPXXXGP50X, dsPIC33EPXXXMC20X/50X AND PIC24EPXXXGP/MC20X
DS70657G-page 32  2011-2013 Microchip Technology Inc.
FIGURE 2-7: INTERLEAVED PFC
FIGURE 2-8: BEMF VOLTAGE MEASURED USING THE ADC MODULE
VAC
VOUT+
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
AN2
Demand
Phase Terminal Voltage Feedback
R49 R41 R34
R36
R44
R52