Microchip Technology MA330020 Data Sheet
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PIC33
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6GS10
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0000318G
-page 30
2008-20
14 M
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FIGURE 2-11:
AC-TO-DC POWER SUPPLY WITH PFC AND THREE OUTPUTS (12V, 5V AND 3.3V)
k
4
ADC
Channel
PWM
UART
RX
PWM
PWM
I
ZVT
V
HV
_
BUS
V
OUT
Isolation
Barrier
ADC
Channel
PWM
PWM
PWM
FET
Driver
FET
Driver
FET
Driver
dsPIC33FJ16GS504
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
dsPIC33FJ16GS504
V
AC
I
PFC
V
HV
_
BUS
|V
AC
|
k
1
k
2
k
3
FET Driver
ADC
Ch.
ADC
Ch.
PWM
Output
ADC
Ch.
PFC Stage
3.3V Multi-Phase Buck Stage
ZVT with Current Doubler Synchronous Rectifier
5V Buck Stage
Secondary Controller
Primary Controller