Datasheet

dsPIC33FJ32GS406/606/608/610 and dsPIC33FJ64GS406/606/608/610 DS70591E-page 32  2009-2012 Microchip Technology Inc.
FIGURE 2-11: AC-TO-DC POWER SUPPLY WITH PFC AND THREE OUTPUTS (12V, 5V, AND 3.3V)
k
4
IZVT
VHV_BUS
VOUT
Isolation
Barrier
FET
Driver
FET
Driver
FET
Driver
k
6
Analog
Comp.
UART
TX
k
10
k
7
k
9
k
8
k
11
k
5
PWM PWM
ADC
Channel
Analog Comparator
Analog Comparator
ADC Channel
Analog Comparator
ADC
Channel
PWM PWM
PWM
PWM
PWM PWM
3.3V Output
5V Output
I
5V
12V Input
FET
Driver
FET
Driver
FET
Driver
FET
Driver
I
3.3V_3
I
3.3V_2
I
3.3V_1
dsPIC33FJ64GS610
VAC
IPFC
VHV_BUS
|VAC|
k
1
k
2
k
3
FET Driver
PFC Stage
3.3V Multi-Phase Buck Stage
ZVT with Current Doubler Synchronous Rectifier
5V Buck Stage
Secondary Controller
ADC
Channel
PWM
UART
RX
PWM
PWM
ADC
Channel
PWM PWM PWM
dsPIC33FJ64GS610
ADC
Ch.
ADC
Ch.
PWM
Output
ADC
Ch.
Primary Controller