Microchip Technology dsPICDEM MCHV, Руководство пользователя

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In
trod
uc
tio
n

2009
Micr
ochip T
e
ch
nol
ogy
I
n
c.
DS
70605A
-page 9
FIGURE 1-2: SYSTEM BLOCK DIAGRAM
PFC Feedback Signals
15V, 3.3V, A-3.3V
PFC PWM
VBUS
15V PSU
3.3VA-3.3V
PFC Circuitry
PFC Current
Feedback
Circuitry
VAC Zero
Crossing
VAC Voltage
Feedback
EMI Choke,
In-rush current
protection, FUSE
90V-2
65V
Rectifier
PFC Fault
dsPIC
®
DSC
Power
Alternative
15V PSU
Alternative
3.3V/A3.3V
Isolated User Interface
RS-232/
USB
SKDE POT, PB, RESET
Current
Feedback
Circuitry
HALL
Sensors
Voltage
Feedback
Circuitry
(V
BUS
and Motor)
Fault
Non-isolated
ICSP connector
Hall
Sensors
MOTOR
Ex
te
rnal
Pr
ogramm
e
r/
Debugger
R
X
ICS
P
™
com
m
ands
T
X
Us
er
In
te
rf
a
ce
PFC Stage Board
Power Module Board
Circuitry
Circuitry
Module