ST ISS001V1 User Manual
UPS reference design - 120 V / 60 Hz model
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
Line interactive 450 W
Data Brief
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 1/4
For further information contact your local STMicroelectronics sales office.
www.st.com
4
Board schematic STEVAL-ISS001V1
1 Board schematic
Figure 1. Schematic
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BAT_LOW
ACF1!
UPS_OFF!
USB_IN!
INP_LEV
PHASE
ACH!
OUT_REL!
OUT_LEV
INV_A
INV_B
VDCDC
CHOFF
AKK_LEV
VCCPU
ON/OFF
SW_ONP
PWR_LEV
VCC
GND
ACF!
TXD
RXD
VCC
ACI!
ACF
ACL!
SHD
VCC
VCC
VCC
GN
GND
D
BAT_LOW
ACF!
ACF1!
UPS_OFF!
USB_IN!
TXD
RXD
DCDC12st05v031.sch
VDCDC
SHD
G
N
D
CHOFF
BATTER
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BatOver12st05v031.sch
BatteryVoltage12st05v031.sch
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ND
VCC
AKK_LEV
VCCPU
VCC
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SW_ONP
PWR_LEV
VDCDC
SHD
GND
VCC
GND
BAT_LOW
ACF!
ACF1!
UPS_OFF!
USB_IN!
TXD
RXD
INP_LEV
VCC
PHASE
ACI!
ACF
ACL!
ACH!
OUT_REL!
OUT_LEV
INV_A
INV_B
V
A
KK
HVDC
VAKK
VDD
VAKK
VBAT
VBAT
GND
VCC
AKK_LEV
DC/DC converter
HVDC
VDD
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Battery Overcurrent Protection
D
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GND
Battery Voltage
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VDD
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InverterVoltage12st05v031.sch
GND
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INV_B
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HVDC
VDD
GND
VBAT
VBAT
Power
VB
Suppl
A
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VCCPU
VCC
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SW_ONP
PowerSupply12st05v031.sch
VCC
PWR_LEV
GND
GND
Output Current Measurement
OutputCurrent12st05v031.sch
I
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GND
AC_IN2
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AC_IN1
INP_LEV
VCC
VDD
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GND
OUT_LEV
AC_1
AC_2
DCAC12st05v031.sch
INV_OUT2
INV_OUT1
VDD
GND
VDD
GND
VDD
CHOFF
AC_1
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VDD
OUT
AC_2
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VD
D
V
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VOUT
DD
AC_IN1
AC_IN2
GND
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IOUT_2
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A
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AC_IN1
AC_IN2
D
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AC_IN1
AC_IN2
GND
AC_1
AC_2
ACDC12
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IOUT_1
IOUT_2
AC_1
AC_2
RFIEMI12st05v031.sch
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AC_IN2
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ACF
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ACH!
OUT_REL!
AC_1
AC_2
INV_OUT2
INV_OUT1
AC_1
AC_2
AC_IN1
AC_IN2
VPP
IOUT_1
IOUT_2
GND
EMI/RFI FI
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OUTPUT
C
D
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