STEVAL-ISS001V1
Line interactive 450 W
UPS reference design - 120 V / 60 Hz model
Data Brief
Features
■
Output rating power: 700 VA / 450 W
■
Input voltage: 83 Vac ± 3% - 153 Vac ± 3%
■
Input frequency: 60 Hz
■
Output voltage: 96 - 138 Vac ± 3 Vac
■
Output frequency: 60 Hz ± 0.1 Hz
■
On battery output waveform: quasi-sine
(square wave)
■
Transfer time: Class 3 [EN62040-3]
■
Typical recharge time: 8h
■
Backup time (full load): 2.5 - 3 min.
■
Battery quantity: 2 pieces
■
Battery nominal voltage: 12 V
■
Battery capacity: 7.2 Ah
■
Battery recharge: two steps
■
Operating temperature: 0 °C to + 40 °C
■
Storage temperature: - 20 °C to + 60 °C
■
Size (H x W x D): 175 mm x 120 mm x 430 mm
■
Weight: 11 kg
■
Shipping weight: 11.5 kg
■
EMI classification: EN 62040-2
STEVAL-ISS001V1
The UPS was designed with RS-232 joint signal
and USB interfaces (USB for RS-232 converter). It
is possible to connect the UPS to a PC using an
RS-232 or USB cable and control the UPS status
through the "UPS Monitor 3.0x" software that
must be installed on the same PC.
Description
This UPS reference design was built employing
off-line topology with AVR boost and buck
regulation of the mains. The inverter module
contains the push-pull DC-DC converter and the
DC-AC output full bridge generating a quasi-sine
waveform.
A microcontroller controls all UPS functions. It
monitors the mains parameters (input/output
mains voltage and phase, output inverter voltage,
battery voltage, output current and output power)
in order to ensure the proper level of the output
voltage.
April 2008
Rev 1
For further information contact your local STMicroelectronics sales office.
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Board schematic
1
STEVAL-ISS001V1
Board schematic
Figure 1.
Schematic
D
C
B
RFIEMI12st05v031.sch
1
RXD
RXD
INP_LEV
VCC
VCC
VCC
VDD
VDD
PHASE
PHASE
AC_IN2
AC_IN1
AC_IN1
AC_IN2
Input Voltage & Phase Measurement
BUTTON
INP_LEV
INP_LEV
AC_IN1
AC_IN2
PHASE
InputVoltage12st05v031.sch
ACI!
ACI!
ACF
ACF
ACF
ACL!
ACL!
ACH!
ACH!
ACH!
OUT_REL!
OUT_REL!
OUT_REL!
OUT_LEV
OUT_LEV
ACL!
INV_A
INV_B
INV_B
HVDC
VDD
VDD
INV_OUT1
GND
AC/DC Charger
ACDC12st05v031.sch
GND
CHOFF
VDD
AC_1
AC_2
VDD
+VOUT
AC_1
AC_1
AC_2
AC_2
VDD
+VOUT
+VOUT
VDD
VBAT
AKK_LEV
Power Supply
VBAT
GND
VCC
Battery Voltage
VCCPU
VCCPU
VCC
VCC
AC_IN1
AC_IN1
AC_IN1
AC_IN2
AC_IN2
AC_IN2
GND
VCC
AKK_LEV
INV_OUT2
VBAT
VBAT
VCCPU
VCC
GND
VCC
AKK_LEV
GND
Protection
BatteryVoltage12st05v031.sch
AC_2
INV_OUT1
VDD
GND
VAKK
BatOver12st05v031.sch
GND
Battery Overcurrent
GND
BATTERY
VBAT
AC_1
AC_2
DC/AC Invverter
HVDC
VAKK
CHOFF
CHOFF
VDD
AC_1
AC_2
INV_OUT2
VDD
GND
GND
HVDC
INV_A
INV_B
SHD
VAKK
SHD
AC_1
DCAC12st05v031.sch
VDD
VDCDC
OUT_LEV
DC/DC converter
DCDC12st05v031.sch
VDCDC
GND
AVR TRAFO
INV_A
SHD
Output Voltage Inverter
InverterVoltage12st05v031.sch
GND
Microcontroller12st05v031.sch
ACI!
VDCDC
Power Relays
RXD
AC_IN2
TXD
GND
TXD
AC_IN1
USB_IN!
TXD
Relays12st05v031.sch
GND
USB_IN!
UPS_OFF!
AC_IN1
AC_IN2
ACF1!
UPS_OFF!
EMI/RFI FILTER
AC_IN2
FUSE
AC_IN1
ACF1!
INPUT
USB_IN!
BAT_LOW
ACF!
Inerface unit
ACF!
ACF1!
UPS_OFF!
GND
BAT_LOW
ACF!
Interface12st05v031.sch
GND
BAT_LOW
VCC
GND
LED INDICATIONS
Microcontroller unit
VCC
VCC
GND
FUSE
GND
VPP
VPP
ON/OFF
ON/OFF
ON/OFF
SW_ONP
SW_ONP
SW_ONP
PowerSupply12st05v031.sch
VCC
IOUT_1
PWR_LEV
PWR_LEV
IOUT_1
IOUT_1
IOUT_2
IOUT_2
PWR_LEV
IOUT_2
GND
GND
GND
Output Current Measurement
OutputCurrent12st05v031.sch
GND
8
OUTPUT
D
C
B
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STEVAL-ISS001V1
2
Revision history
Revision history
Table 1.
Document revision history
Date
Revision
14-Apr-2008
1
Changes
Initial release.
3/4
STEVAL-ISS001V1
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