STEVAL-ISS001V1 STMicroelectronics

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 STEVAL-ISS001V1 Operating temperature: 0 C to + 40 C Storage temperature: - 20 C to + 60 C The UPS was designed with RS-232 joint signal Size (H x W x D): 175 mm x 120 mm x 430 mm and USB interfaces (USB for RS-232 converter). It is possible to connect the UPS to a PC using an Weight: 11 kg RS-232 or USB cable and control the UPS status Shipping weight: 11.5 kg through theUPS Monitor 3.0 software that EMI classification: EN 62040-2 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 41 8 D D AVR TRAFO Power Relays EMI/RFI FILTER AC IN1 AC IN1 AC IN1 AC IN2 AC IN2 AC IN2 Relays12st05v031.sch GND ACDC12st05v031.sch GND DC/AC Invverter AC/DC Charger Input Voltage & Phase Measurement Output Voltage Inverter C C GND GND VDD VDD VDD VDD VDD VDD GND GND INPUT +VOUT CHOFF +VOUT +VOUT INV A GND INV B VBAT Inerface unit Power Supply VDD Interface12st05v031.sch GND VBAT GND DC/DC converter Battery Overcurrent Protection Battery Voltage GND GND VAKK VAKK VAKK GND GND B GND B GND BATTERY Microcontroller unit Microcontroller12st05v031.sch BUTTON LED INDICATIONS Board schematic STEVAL-ISS001V1 1 Board schematic Figure 1. Schematic RFIEMI12st05v031.sch FUSE VCC VCC VCC GND GND FUSE BAT LOW BAT LOW BAT LOW ACF ACF ACF ACF1 ACF1 ACF1 UPS OFF UPS OFF UPS OFF USB IN USB IN USB IN TXD AC IN1 TXD TXD AC IN2 AC IN1 RXD AC IN2 RXD RXD AC IN1 AC IN2 INP LEV INP LEV INP LEV VCC VCC VCC VDD VDD PHASE PHASE PHASE InputVoltage12st05v031.sch ACI ACI ACI ACF ACF ACF ACL ACL ACL ACH ACH ACH OUT REL OUT REL OUT REL InverterVoltage12st05v031.sch GND OUT LEV OUT LEV OUT LEV AC 1 AC 1 AC 1 INV A INV A AC 2 AC 2 AC 2 INV B INV B DCDC12st05v031.sch DCAC12st05v031.sch VDCDC VDCDC VDCDC INV OUT2 INV OUT2 INV OUT1 INV OUT1 SHD SHD SHD HVDC HVDC HVDC GND VDD VDD VDD CHOFF CHOFF GND AC 1 VBAT AC 1 AC 1 VBAT AC 2 AC 2 AC 2 BatOver12st05v031.sch BatteryVoltage12st05v031.sch VBAT GND VCC VCC VCC AKK LEV AKK LEV AKK LEV AC IN1 AC IN1 AC IN1 AC IN2 AC IN2 AC IN2 VCCPU VCCPU VCCPU VCC VCC VCC GND VPP VPP ON/OFF ON/OFF ON/OFF SW ONP SW ONP SW ONP PowerSupply12st05v031.sch VCC IOUT 1 IOUT 1 IOUT 1 PWR LEV PWR LEV PWR LEV IOUT 2 IOUT 2 IOUT 2 GND Output Current Measurement GND OutputCurrent12st05v031.sch OUTPUT 2/4