General description
UM0527
6/66
1.1.2 Block
diagram
Figure 1.
Block diagram
HVDC
INV_
A
INV_
B
INV_OUT1
INV_OUT2
VDD
VDD
GND
VDD
DC/
AC
In
v
v
er
te
r
DCAC12st05v031.sch
HVDC
VAKK
VDD
SHD
VDCDC
GND
D
C
/D
C
converter
DCDC12st05v031.sch
VCC
BAT_LOW
ACF!
UPS_OFF!
USB_IN!
TXD
RXD
INP_LEV
PHASE
ACL!
ACH!
ACF
OUT_REL!
OUT_LEV
INV_A
INV_B
SHD
CHOFF
AKK_LEV
VCC
ON/OFF
SW_ONP
PWR_LEV
VDCDC
ACI!
GND
VCCPU
VCC
VCC
ACF1!
M
icrocont
rol
le
r
uni
t
M
icr
ocont
ro
ller
12st
05v031.
sch
AC_
IN1
AC_
IN2
ACL!
ACH!
ACF
OUT_REL!
IOUT_2
IOUT_1
AC_1
AC_2
INV_OUT1
INV_OUT2
AC_IN2
AC_IN1
ACI!
GND
VPP
AC_IN1
AC_IN2
AC_1
AC_2
Pow
er
R
el
ays
R
el
ays12st
05v031.
sch
AC_2
AC_1
VDD
CHOFF
VBAT
VDD
+
VOUT
GND
AC/
DC
Cha
rg
er
A
C
D
C
12st
05v031.
sch
VCC
BAT_LOW
ACF!
UPS_OFF!
USB_IN!
TXD
RXD
GND
ACF1!
In
erf
a
ce
uni
t
In
te
rf
ace12st
05v031.
sch
VDD
VBAT
+
VOUT
AC_IN2
ON/OFF
SW_ONP
VCC
AC_IN1
GND
VPP
VCCPU
Power
Suppl
y
PowerSupply12st05v031.sch
IOUT_1
IOUT_2
PWR_LEV
GND
VCC
Output Current Measurement
OutputCurrent12st05v031.sch
VBAT
AKK_LEV
GND
VCC
B
a
ttery
V
o
lta
g
e
BatteryVoltage12st05v031.sch
AC_2
AC_1
OUT_LEV
GND
O
u
tput
V
o
lt
age
Invert
er
InverterVoltage12st05v031.sch
AC_IN1
AC_IN2
PHASE
VCC
GND
VDD
INP_LEV
Input
Vol
tage
&
P
has
e
M
eas
urem
ent
InputVoltage12st05v031.sch
AC_
IN1
AC_
IN2
EM
I/
RFI
F
ILTER
RFIEMI12st05v031.sch
VBAT
VAKK
GND
B
a
ttery
O
v
ercurrent
P
rotection
BatOver12st05v031.sch
AVR
T
RAFO
IN
PU
T
OUTPUT
LED
INDI
CATI
ONS
BUTTON
FUSE
FUSE
VCC
BAT_LOW
ACF!
UPS_OFF!
USB_IN!
TXD
RXD
INP_LEV
PHASE
ACI!
ACF
ACL!
ACH!
OUT_REL!
OUT_LEV
INV_A
INV_B
VDCDC
SHD
CHOFF
VAKK
VBAT
AKK_LEV
VCC
ON/OFF
SW_ONP
PWR_LEV
+
VOUT
VDD
VDD
AC_IN2
AC_IN1
AC_1
AC_2
AC_1
AC_2
AC_IN1
AC_IN2
IOUT_1
IOUT_2
AC_
IN1
AC_
IN2
BATTERY
VDD
HVDC
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
VCCPU
VCC
VDD
VCC
ACF1!